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CALCULATION OF REGISTRATION FEE

       
 
Title of each class of securities
to be registered

  Maximum aggregate
offering price

  Amount of
registration fee(1)

 

Subordinated Debt Securities

  US$1,250,000,000   US$151,500
 

Ordinary Shares

               (2)                (3)

 

(1)
The registration fee of US$151,500 is calculated in accordance with Rule 457(r) of the US Securities Act of 1933, as amended.

(2)
Represents an indeterminate number of fully paid ordinary shares in the capital of the registrant, which we refer to as the Ordinary Shares, that may be issued from time to time upon conversion of the 4.110% Subordinated Notes due 2039, which we refer to as the notes.

(3)
Pursuant to Rule 457(i) under the Securities Act, no separate registration fee is required for the Ordinary Shares underlying the notes because no additional consideration is to be received in connection with the exercise of the conversion privilege.

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As Filed Pursuant to Rule 424(b)(5)
Registration No. 333-228294

PROSPECTUS SUPPLEMENT
(TO PROSPECTUS DATED NOVEMBER 9, 2018)

US$1,250,000,000

LOGO

Westpac Banking Corporation
(ABN 33 007 457 141)
4.110% Subordinated Notes due 2034

Subject, upon the occurrence of a Non-Viability Trigger Event, to Conversion or possible
Write-off, as more fully described in the accompanying prospectus



            We are offering US$1,250,000,000 aggregate principal amount of our 4.110% subordinated notes due July 24, 2034, which we refer to as the notes. From and including July 24, 2019, which we refer to as the Issue Date, to but excluding the interest payment date on July 24, 2029, which we refer to as the Reset Date, the notes will bear interest at a rate of 4.110% per year, and on and after the Reset Date to but excluding July 24, 2034, which we refer to as the Maturity Date, the notes will bear interest at a fixed rate per year equal to the 5-Year U.S. Treasury Rate plus the Spread (rounded to three decimal places with 0.0005 rounded upwards) (each as defined herein). Interest will be payable semi-annually in arrears on January 24 and July 24 of each year, subject in each case to the applicable business day convention set forth in this prospectus supplement, and certain solvency conditions described herein, beginning on January 24, 2020. We may redeem all, but not less than all, of the notes at our option on the Reset Date as described herein and under "Description of the Subordinated Debt Securities—Redemption of Subordinated Debt Securities—General" in the accompanying prospectus. We may also redeem all, but not less than all, of the notes if specified events occur involving Australian taxation or regulation as described herein and under "Description of the Subordinated Debt Securities—Redemption of Subordinated Debt Securities—Redemption for Taxation Reasons" and "Description of the Subordinated Debt Securities—Redemption of Subordinated Debt Securities—Redemption for Regulatory Reasons" in the accompanying prospectus. Redemption is subject to the prior written approval of the Australian Prudential Regulation Authority, which we refer to as APRA (which may or may not be given).

            The notes will be our direct, unsecured and subordinated obligations as described under "Description of the Subordinated Debt Securities—Ranking", "Description of the Subordinated Debt Securities—Additional Provisions—Status and Subordination" and "Description of the Subordinated Debt Securities—Additional Provisions—Winding-Up" in the accompanying prospectus. The notes will constitute a separate series of Subordinated Debt Securities as described in the accompanying prospectus.

            The notes are complex financial instruments and are not a suitable or appropriate investment for all investors. In some jurisdictions, regulatory authorities have adopted or published laws, regulations or guidance that limit or prohibit the offer or sale of securities such as these securities to certain types of investors. By purchasing, or making or accepting an offer to purchase, these notes from us and/or the underwriters in the United States, each prospective investor represents, warrants, agrees with and undertakes to us and to each underwriter that it qualifies as a "qualified institutional buyer" as defined in Rule 144A of the Securities Act. See "Plan of Distribution" in the accompanying prospectus.

            The notes are subject, upon the occurrence of a Non-Viability Trigger Event, to Conversion or possible Write-off (each as defined in Section 4 under "Description of the Subordinated Debt Securities—Additional Provisions" in the accompanying prospectus), as more fully described in the accompanying prospectus. If any notes are Converted following a Non-Viability Trigger Event, it is likely that the Maximum Conversion Number (as defined herein) will apply and limit the number of Ordinary Shares to be issued. In this case, the value of the Ordinary Shares received is likely to be significantly less than the Outstanding Principal Amount (as defined in Section 4 under "Description of the Subordinated Debt Securities—Additional Provisions" in the accompanying prospectus) of those notes. The Australian dollar may depreciate in value against the U.S. dollar by the time of Conversion. In that case, the Maximum Conversion Number is more likely to apply.

            If Conversion of the notes (or a percentage of the Outstanding Principal Amount of the notes) does not occur for any reason within five ASX Business Days after the Non-Viability Trigger Event Date (each as defined in Section 4 under "Description of the Subordinated Debt Securities—Additional Provisions" in the accompanying prospectus), the notes (or a percentage of the Outstanding Principal Amount of the notes to be Converted) will be Written-off and the holders' rights in relation to the notes (including with respect to payments of interest or accrued interest, and the repayment of Outstanding Principal Amount and, upon Conversion, the receipt of Ordinary Shares (as defined in Section 4 under "Description of the Subordinated Debt Securities—Additional Provisions" in the accompanying prospectus) issued in respect of such notes) will be immediately and irrevocably written-off and terminated with effect on and from the Non-Viability Trigger Event Date, as described under "Description of the Subordinated Debt Securities—Additional Provisions" in the accompanying prospectus.

             Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or passed upon the accuracy or adequacy of this prospectus supplement or the accompanying prospectus. Any representation to the contrary is a criminal offense.

             Investing in the notes involves risks. To read about certain factors you should consider before investing in the notes, see "Forward-Looking Statements" on page S-v and "Risk Factors" beginning on page S-11 of this prospectus supplement, and the risk factors set forth in our U.S. Interim Financial Results Announcement for the half-year ended March 31, 2019 furnished to the Securities and Exchange Commission on Form 6-K dated May 7, 2019 , which we refer to as the 2019 U.S. Interim Financial Results Announcement, and which is incorporated by reference in this prospectus supplement and the accompanying prospectus.

            The notes will not be protected accounts or deposit liabilities of Westpac Banking Corporation for the purpose of the Banking Act 1959 of Australia, which we refer to as the Australian Banking Act, or the financial claims scheme established under the Australian Banking Act (an Australian Government scheme that protects depositors of banks like Westpac from potential loss due to their failure), which we refer to as the FCS, are not subject to the depositor protection provisions of the Australian Banking Act, and are not insured or guaranteed by (1) the Commonwealth of Australia or any governmental agency of Australia, (2) the United States Federal Deposit Insurance Corporation or any other governmental agency or instrumentality of the United States, (3) any compensation scheme of the Commonwealth of Australia or the United States, or (4) any other jurisdiction or party.



 
  Per Note   Total

Public Offering Price(1)

  100.000%   US$1,250,000,000

Underwriting Discount(2)

  0.400%   US$5,000,000

Proceeds to Westpac (before expenses)

  99.600%   US$1,245,000,000

(1)
Plus accrued interest from July 24, 2019 if settlement occurs after that date.
(2)
The underwriters have agreed to reimburse us for certain of our expenses relating to this offering. See "Underwriting" on page S-33 for further information.



            The notes will not be listed on any securities exchange. Currently, there is no public market for the notes.

            The underwriters expect that the notes will be ready for delivery in book-entry form only through The Depository Trust Company and its participants, including Euroclear Bank SA/NV and Clearstream Banking S.A., on or about July 24, 2019.



Joint Book-Running Managers

BofA Merrill Lynch   Citigroup   HSBC   J.P. Morgan   Westpac Banking Corporation

Co-Managers

RBC Capital Markets   TD Securities



July 16, 2019


Table of Contents


TABLE OF CONTENTS

 
  Page  

PROSPECTUS SUPPLEMENT

 

SPECIAL NOTICE TO INVESTORS REGARDING AUTOMATIC CONVERSION OR WRITE-OFF UPON THE OCCURRENCE OF A NON-VIABILITY TRIGGER EVENT

   
S-ii
 

PRESENTATION OF INFORMATION

    S-iv  

FORWARD-LOOKING STATEMENTS

    S-v  

SUMMARY

    S-1  

RISK FACTORS

    S-11  

USE OF PROCEEDS

    S-22  

CAPITALIZATION

    S-23  

DESCRIPTION OF THE NOTES

    S-24  

TAXATION

    S-32  

UNDERWRITING (CONFLICTS OF INTEREST)

    S-33  

WHERE YOU CAN FIND MORE INFORMATION

    S-39  

INCORPORATION OF INFORMATION WE FILE WITH THE SEC

    S-39  

CURRENCY OF PRESENTATION AND EXCHANGE RATES

    S-41  

VALIDITY OF SECURITIES

    S-41  

EXPERTS

    S-42  

EXPENSES

    S-43  

PROSPECTUS

 

ABOUT THIS PROSPECTUS

   
1
 

FORWARD-LOOKING STATEMENTS

    1  

WESTPAC BANKING CORPORATION

    4  

USE OF PROCEEDS

    6  

DESCRIPTION OF THE SUBORDINATED DEBT SECURITIES

    7  

DESCRIPTION OF ORDINARY SHARES

    47  

TAXATION

    49  

PLAN OF DISTRIBUTION

    59  

WHERE YOU CAN FIND MORE INFORMATION

    61  

INCORPORATION OF INFORMATION WE FILE WITH THE SEC

    61  

ENFORCEABILITY OF FOREIGN JUDGMENTS IN AUSTRALIA

    62  

CURRENCY OF PRESENTATION AND EXCHANGE RATES

    62  

VALIDITY OF SECURITIES

    63  

EXPERTS

    63  

LIMITATION ON INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM'S LIABILITY

    63  

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SPECIAL NOTICE TO INVESTORS REGARDING AUTOMATIC CONVERSION OR WRITE-OFF UPON THE OCCURRENCE OF A NON-VIABILITY TRIGGER EVENT

         The notes are subject, upon the occurrence of a Non-Viability Trigger Event, to Conversion or possible Write-off, as more fully described in the accompanying prospectus. If any notes are Converted following a Non-Viability Trigger Event, it is likely that the Maximum Conversion Number will apply and limit the number of Ordinary Shares to be issued. In this case, the value of the Ordinary Shares received is likely to be significantly less than the Outstanding Principal Amount of those notes. The Australian dollar may depreciate in value against the U.S. dollar by the time of Conversion. In that case, the Maximum Conversion Number is more likely to apply.

         If Conversion of the notes (or a percentage of the Outstanding Principal Amount of the notes) does not occur for any reason within five ASX Business Days after the Non-Viability Trigger Event Date, the notes (or a percentage of the Outstanding Principal Amount of the notes to be Converted) will be Written-off and the holders' rights in relation to the notes (including with respect to payments of interest or accrued interest, and the repayment of Outstanding Principal Amount and, upon Conversion, the receipt of Ordinary Shares issued in respect of such notes) will be immediately and irrevocably written-off and terminated with effect on and from the Non-Viability Trigger Event Date, as described under "Description of the Subordinated Debt Securities—Additional Provisions" in the accompanying prospectus.

        You should rely only on information contained or incorporated by reference in this prospectus supplement, the accompanying prospectus and any free writing prospectus with respect to the offering of the notes filed by us with the Securities and Exchange Commission, which we refer to as the SEC. We have not, and the underwriters have not, authorized anyone to provide you with different or additional information. If anyone provides you with different, additional or inconsistent information, you should not rely on it. You should assume that the information in this prospectus supplement, the accompanying prospectus and any free writing prospectus with respect to the offering of the notes filed by us with the SEC and the documents incorporated by reference herein and therein is only accurate as of the respective dates of such documents. Our business, financial condition, results of operations and prospects may have changed since those dates.

        We are offering to sell, and are seeking offers to buy, the notes only in jurisdictions where offers and sales of the notes are permitted. The distribution of this prospectus supplement and the accompanying prospectus and the offering of the notes in certain jurisdictions may be restricted by law. Persons outside the United States who come into possession of this prospectus supplement and the accompanying prospectus must inform themselves about and observe any restrictions relating to the offering of the notes and the distribution of this prospectus supplement and the accompanying prospectus outside the United States. This prospectus supplement and the accompanying prospectus do not constitute, and may not be used in connection with, an offer to sell, or a solicitation of an offer to buy, any notes offered by this prospectus supplement and the accompanying prospectus by any person in any jurisdiction in which it is unlawful for such person to make such an offer or solicitation.

        None of this prospectus supplement, the accompanying prospectus or any related free writing prospectus is a prospectus for the purposes of the Prospectus Directive (as defined below). This prospectus supplement, the accompanying prospectus and any related free writing prospectus have been prepared on the basis that any offer of notes in any Member State of the European Economic Area (the "EEA") which has implemented the Prospectus Directive (each, a "Relevant Member State") will only be made to a legal entity which is a qualified investor under the Prospectus Directive ("Qualified Investors"). Accordingly any person making or intending to make an offer in that Relevant Member State of notes which are the subject of the offering contemplated in this prospectus supplement, the accompanying prospectus and any related free writing prospectus may only do so with respect to Qualified Investors. Neither Westpac nor the underwriters have authorized, nor do they authorize, the

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making of any offer of notes other than to Qualified Investors. The expression "Prospectus Directive" means Directive 2003/71/EC (as amended or superseded), and includes any relevant implementing measure in the Relevant Member State.

        PROHIBITION OF SALES TO EEA RETAIL INVESTORS —The notes are not intended to be offered, sold or otherwise made available to and should not be offered, sold or otherwise made available to any retail investor in the EEA. For these purposes, a retail investor means a person who is one (or more) of: (i) a retail client as defined in point (11) of Article 4(1) of Directive 2014/65/EU, as amended ("MiFID II"); or (ii) a customer within the meaning of Directive (EU) 2016/97, as amended or superseded (the "Insurance Distribution Directive"), where that customer would not qualify as a professional client as defined in point (10) of Article 4(1) of MiFID II; or (iii) not a qualified investor as defined in the Prospectus Directive. Consequently no key information document required by Regulation (EU) No 1286/2014, as amended (the "PRIIPs Regulation") for offering or selling the notes or otherwise making them available to retail investors in the EEA has been prepared and therefore offering or selling the notes or otherwise making them available to any retail investor in the EEA may be unlawful under the PRIIPs Regulation.

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PRESENTATION OF INFORMATION

        This document is in two parts. The first part is this prospectus supplement, which describes the specific terms of the offering of the notes and also adds to and updates information contained in the accompanying prospectus and the documents incorporated by reference in this prospectus supplement and the accompanying prospectus. The second part is the accompanying prospectus which gives more general information about our Debt Securities, including our Subordinated Debt Securities, some of which may not apply to this offering.

        If the information in this prospectus supplement is inconsistent with information contained in the accompanying prospectus or any document incorporated by reference in this prospectus supplement or the accompanying prospectus on or prior to the date hereof, you should rely on the information contained in this prospectus supplement.

        Unless otherwise indicated, or the context otherwise requires, references in this prospectus supplement to the "Group", "we", "us" and "our" or similar terms are to Westpac Banking Corporation and its controlled entities (within the meaning of Section 50AA of the Corporations Act 2001 of Australia, which we refer to as the Australian Corporations Act), and references to "Westpac" are to Westpac Banking Corporation (ABN 33 007 457 141).

        We publish our consolidated financial statements in Australian dollars. In this prospectus supplement, unless otherwise stated or the context otherwise requires, references to "dollars", "$", or "A$" are to Australian dollars, references to "US$", "USD" or "U.S. dollars" are to United States dollars and references to "NZ$", "NZD" or "NZ dollars" are to New Zealand dollars.

        Certain amounts that appear in this prospectus supplement may not sum due to rounding.

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FORWARD-LOOKING STATEMENTS

        This prospectus supplement contains or incorporates by reference statements that constitute "forward-looking" statements within the meaning of Section 27A of the Securities Act of 1933, as amended, which we refer to as the Securities Act. Forward-looking statements are statements about matters that are not historical facts. Forward-looking statements appear in a number of places in this prospectus supplement and the accompanying prospectus and the information incorporated by reference herein and therein and include statements regarding our intent, belief or current expectations with respect to our business and operations, market conditions, results of operations and financial condition, including, without limitation, future loan loss provisions and financial support to certain borrowers. Words such as "will", "may", "expect", "intend", "seek", "would", "should", "could", "continue", "plan", "estimate", "anticipate", "believe", "probability", "risk", "aim" or other similar words are used to identify forward-looking statements. These forward-looking statements reflect our current views with respect to future events and are subject to change, certain risks, uncertainties and assumptions which are, in many instances, beyond our control, and have been made based upon management's expectations and beliefs concerning future developments and their potential effect upon us. There can be no assurance that future developments will be in accordance with our expectations or that the effect of future developments on us will be those anticipated. Actual results could differ materially from those expected, depending on the outcome of various factors, including, but not limited to, those set forth in our Annual Report on Form 20-F for the financial year ended September 30, 2018 , which we refer to as our 2018 Form 20-F, and the 2019 U.S. Interim Financial Results Announcement and the other documents incorporated by reference in this prospectus supplement or the accompanying prospectus. Those factors include, but are not limited to:

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        All forward-looking statements speak only as of the date made. We are under no obligation to update any forward-looking statements contained or incorporated by reference in this prospectus supplement, whether as a result of new information, future events or otherwise.

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SUMMARY

         This summary highlights selected information about us and this offering. It does not contain all of the information that may be important to you in deciding whether to purchase the notes. We encourage you to read the entire prospectus supplement, the accompanying prospectus and the documents that we have filed with the SEC that are incorporated by reference prior to deciding whether to purchase the notes.


Westpac Banking Corporation

        We are one of the four major banking organizations in Australia and one of the largest banking organizations in New Zealand. We provide a broad range of banking and financial services in these markets, including consumer, business and institutional banking and wealth management services.

        We have branches, affiliates and controlled entities throughout Australia, New Zealand, Asia and in the Pacific region, and maintain branches and offices in some of the key financial centers around the world.

        We were founded in 1817 and were the first bank established in Australia. In 1850 we were incorporated as the Bank of New South Wales by an Act of the New South Wales Parliament. In 1982 we changed our name to Westpac Banking Corporation following our merger with the Commercial Bank of Australia. On August 23, 2002, we were registered as a public company limited by shares under the Australian Corporations Act. Our principal office is located at 275 Kent Street, Sydney, New South Wales, 2000, Australia. Our telephone number for calls within Australia is 132 032 and our international telephone number is (+61) 2 9293 9270.

        As at March 31, 2019, we had total assets of A$891.1 billion. Our market capitalization as of July 8, 2019 was approximately A$97.8 billion.

        Our operations comprise the following key customer-facing business divisions operating under multiple brands serving over 14 million customers.

    Consumer, which we refer to as CD, is responsible for sales and service to consumer customers of banking and insurance products in Australia under the Westpac, St.George, BankSA, Bank of Melbourne and RAMS brands. Activities are conducted through a dedicated team of specialist consumer relationship managers along with an extensive network of branches, call centers and automatic teller machines, which we refer to as ATMs. Customers are also supported by a range of internet and mobile banking solutions. CD works in an integrated way with Business, which we refer to as BD, and Westpac Institutional Bank, which we refer to as WIB, in the sales and service of certain financial services and products including foreign exchange.

    BD is responsible for sales and service to small to medium enterprise and commercial business customers in Australia for facilities up to approximately $150 million. The division operates under the Westpac, St.George, BankSA and Bank of Melbourne brands. Customers are provided with a wide range of banking and financial products and services to support their borrowing, payments and transaction needs. In addition, specialist services are provided for cash flow finance, trade finance, automotive and equipment finance and property finance. The division is also responsible for consumer customers with private wealth services and auto finance loans. BD works in an integrated way with WIB in the sales, referral and service of certain financial services and products, including foreign exchange and interest rate hedging. BD is also responsible for the Australian Group's wealth platforms, superannuation and investments businesses.

      On March 19, 2019, the Group announced changes to the way it supports customers' wealth and insurance needs, realigning its wealth businesses into expanded CD and BD divisions and exiting

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      the provision of personal financial advice. Changes to the Group's organizational structure were effective from April 1, 2019.

    WIB delivers a broad range of financial products and services to commercial, corporate, institutional and government customers with connections to Australia and New Zealand. WIB operates through dedicated industry relationship and specialist product teams, with expert knowledge in financing, transactional banking, and financial and debt capital markets. Customers are supported throughout Australia as well as via branches and subsidiaries located in New Zealand, the US, UK and Asia. WIB is also responsible for Westpac Pacific, currently providing a range of banking services in Fiji and PNG. WIB works in an integrated way with all the Group's divisions in the provision of more complex financial needs, including across foreign exchange and fixed interest solutions.

    Westpac New Zealand is responsible for sales and service of banking, wealth and insurance products for consumers, business and institutional customers in New Zealand. Westpac conducts its New Zealand banking business through two banks in New Zealand: Westpac New Zealand Limited, which is incorporated in New Zealand, and Westpac Banking Corporation (New Zealand Branch), which is incorporated in Australia. Westpac New Zealand operates via an extensive network of branches and ATMs across both the North and South Islands. Business and institutional customers are also served through relationship and specialist product teams. Banking products are provided under the Westpac brand, while insurance and wealth products are provided under Westpac Life and BT brands, respectively. Westpac New Zealand also maintains its own infrastructure, including technology, operations and treasury.

    Group Businesses include:

    Treasury, which is responsible for the management of the Group's balance sheet, including wholesale funding, capital and management of liquidity. Treasury also manages the interest rate risk and foreign exchange risks inherent in the balance sheet, including managing the mismatch between the Group's assets and liabilities. Treasury's earnings are primarily sourced from managing the Group's Australian balance sheet and interest rate risk within set risk limits;

    Group Technology, which comprises functions for the Australian businesses, is responsible for technology strategy and architecture, infrastructure and operations, applications development and business integration; and

    Core Support, which comprises functions performed centrally, including Australian banking operations, property services, strategy, finance, risk, compliance, legal, human resources and customer and corporate relations.

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The Offering

         The following is a brief summary of some of the terms of this offering. For a more complete description of the terms of the notes, see "Description of the Notes" in this prospectus supplement and "Description of the Subordinated Debt Securities" in the accompanying prospectus.

Issuer   Westpac Banking Corporation.

Notes Offered

 

US$1,250,000,000 aggregate principal amount of notes due 2034.

Reset Date

 

The interest payment date on July 24, 2029.

Maturity Date

 

The notes will mature on July 24, 2034.

Interest Rate

 

From and including the Issue Date to but excluding the Reset Date, the notes will bear interest on the Outstanding Principal Amount at a rate of 4.110% per year, and on and after the Reset Date to but excluding the Maturity Date, the notes will bear interest on the Outstanding Principal Amount at a fixed rate per year equal to the 5-Year U.S. Treasury Rate plus the Spread (rounded to three decimal places with 0.0005 rounded upwards).

Interest Payment Dates

 

Interest on the notes will be payable semi-annually in arrears on January 24 and July 24 of each year, subject in each case to the applicable business day convention set forth below, and certain solvency conditions described herein, beginning on January 24, 2020.

 

 

Any payment of principal or interest with respect to the notes required to be made on an interest payment date that is not a business day in New York, London and Sydney will be made on the next succeeding business day, and no interest will accrue on that payment for the period from and after the Interest Payment Date to the date of payment on the next succeeding business day.

 

 

Payments under Section 3.1(b) under "Description of the Subordinated Debt Securities—Additional Provisions" in the accompanying prospectus shall not be subject to delays on account of any business day convention.

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Solvency Condition   Prior to a Winding - Up, all of our obligations to make payments in respect of the notes are subject to our being Solvent (as defined in Section 4 under "Description of the Subordinated Debt Securities—Additional Provisions" in the accompanying prospectus). If we are not Solvent at the time a payment would otherwise be due and payable or would not be Solvent immediately thereafter as a result of making such payment, no payment will be made in respect of the notes. Our failure to pay in such circumstances will not be an event of default and any unpaid Outstanding Principal Amount will continue to accrue interest and interest not paid will accumulate with compounding until it is paid and will be payable on the first business day on which we are Solvent.

Ranking and Status

 

The notes will be our direct, unsecured and subordinated obligations. In the event of a Winding-Up (as defined in Section 4 under "Description of the Subordinated Debt Securities—Additional Provisions" in the accompanying prospectus), to the extent the notes have not previously been Converted or Written-off (or that have been partially Converted or Written - off), the notes would (i) be subordinate to, and rank junior in right of payment to, the obligations of Westpac to Senior Creditors (as defined in Section 4 under "Description of the Subordinated Debt Securities—Additional Provisions" in the accompanying prospectus), and certain debts required to be preferred by law, and all such obligations to Senior Creditors and debts required to be preferred by law shall be entitled to be paid in full before any payment shall be paid on account of any sums payable in respect of the notes, (ii) rank equally with obligations of Westpac to the holders of other Subordinated Debt Securities that have not been Converted or Written-off (or that have been partially Converted or Written-off), and the obligations of Westpac to holders of Equal Ranking Instruments (as defined in Section 4 under "Description of the Subordinated Debt Securities—Additional Provisions" in the accompanying prospectus) and (iii) rank prior to, and senior in right of payment to the obligations of Westpac to holders of Ordinary Shares, and other Junior Ranking Capital Instruments (as defined in Section 4 under "Description of the Subordinated Debt Securities—Additional Provisions" in the accompanying prospectus). For a description of debts preferred by law, see "Description of the Subordinated Debt Securities—Ranking" in the accompanying prospectus.

 

 

However, it is unlikely a Winding-Up will occur without a Non-Viability Trigger Event having occurred first and the notes being Converted or Written-off. In that event:

 

if the notes have Converted into Ordinary Shares, holders will rank equally with existing holders of Ordinary Shares; and

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if the notes are Written-off, all rights in relation to the notes will be terminated, and holders will not have their Outstanding Principal Amount repaid or receive any outstanding interest or accrued interest, or have the right to have the notes Converted into Ordinary Shares. In such an event, a holder's investment in the notes will lose all of its value and such holder will not receive any compensation.


 

 

The notes will not be protected accounts or deposit liabilities of Westpac for the purposes of the Australian Banking Act.

Conversion or Write-off Upon Occurrence of a Non-Viability Trigger Event

 

The notes are subject, upon the occurrence of a Non-Viability Trigger Event, to Conversion or possible Write-off (each as defined in Section 4 under "Description of the Subordinated Debt Securities—Additional Provisions" in the accompanying prospectus), as more fully described in the accompanying prospectus. If Conversion of the notes (or a percentage of the Outstanding Principal Amount of the notes) does not occur for any reason within five ASX Business Days after the Non-Viability Trigger Event Date (each as defined in Section 4 under "Description of the Subordinated Debt Securities—Additional Provisions" in the accompanying prospectus), the notes (or a percentage of the Outstanding Principal Amount of the notes to be Converted) will be Written-off and the holders' rights in relation to the notes (including with respect to payments of interest or accrued interest, and the repayment of Outstanding Principal Amount and, in the case of Conversion, the receipt of Ordinary Shares issued in respect of such notes) will be immediately and irrevocably written-off and terminated with effect on and from the Non-Viability Trigger Event Date, as described under "Description of the Subordinated Debt Securities—Additional Provisions" in the accompanying prospectus.

Conversion

 

In the case of Conversion, Westpac will allot and issue to each holder of notes the Conversion Number of Ordinary Shares for each note (subject always to the Conversion Number being no greater than the Maximum Conversion Number).

 

    Conversion Number means:

 

 

Conversion Number for each note

 

=

 

Outstanding Principal Amount of the Subordinated Debt Security (translated into Australian Dollars in accordance with paragraph (b) of the definition of Outstanding Principal Amount where the calculation date shall be the Non-Viability Trigger Event Date)

            P × VWAP

 

    where:

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    Outstanding Principal Amount has the meaning given to it in Section 4 under "Description of the Subordinated Debt Securities—Additional Provisions" in the accompanying prospectus, as adjusted in accordance with Section 3.13 under "Description of the Subordinated Debt Securities—Additional Provisions" in the accompanying prospectus.

 

 

P means 0.99

 

 

VWAP means the VWAP during the VWAP Period, as adjusted in accordance with Section 3 under "Description of the Subordinated Debt Securities—Additional Provisions" in the accompanying prospectus.

 

    Maximum Conversion Number means a number calculated according to the following formula:

 

 

Maximum Conversion Number for each note

 

=

 

Outstanding Principal Amount of the Subordinated Debt Security (translated into Australian Dollars in accordance with paragraph (b) of the definition of Outstanding Principal Amount where the calculation date shall be the ASX Business Day prior to the Issue Date of the notes)

            0.20 × Issue Date VWAP

 

    where:

 

 

Outstanding Principal Amount has the meaning given to it in Section 4 under "Description of the Subordinated Debt Securities—Additional Provisions" in the accompanying prospectus, as adjusted in accordance with Section 3.13 under "Description of the Subordinated Debt Securities—Additional Provisions" in the accompanying prospectus.

 

 

Issue Date VWAP means the VWAP during the period of 20 ASX Business Days on which trading in Ordinary Shares took place immediately preceding but not including the Issue Date, as adjusted in accordance with Section 3 under "Description of the Subordinated Debt Securities—Additional Provisions" in the accompanying prospectus.

 

 

If any notes are Converted following a Non-Viability Trigger Event, it is likely that the Maximum Conversion Number will apply and limit the number of Ordinary Shares to be issued. In this case, the value of the Ordinary Shares received is likely to be significantly less than the Outstanding Principal Amount of those notes. The Australian dollar may depreciate in value against the U.S. dollar by the time of Conversion. In that case, the Maximum Conversion Number is more likely to apply.

 

 

Depending on your circumstances, you may receive Ordinary Shares or the proceeds from the sale thereof. See Section 3.10 under "Description of the Subordinated Debt Securities—Additional Provisions" in the accompanying prospectus.

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    If Conversion of the notes (or a percentage of the Outstanding Principal Amount of the notes) does not occur for any reason within five ASX Business Days after the Non-Viability Trigger Event Date, the notes (or a percentage of the Outstanding Principal Amount of the notes to be Converted) will be Written-off and the holders' rights in relation to the notes (including with respect to payments of interest or accrued interest, and the repayment of Outstanding Principal Amount and, in the case of Conversion, the receipt of Ordinary Shares issued in respect of such notes) will be immediately and irrevocably written-off and terminated with effect on and from the Non-Viability Trigger Event Date, as described in Section 2.3 under "Description of the Subordinated Debt Securities—Additional Provisions" in the accompanying prospectus.

Optional Redemption

 

Subject to certain limitations, we will have the right to redeem each of the notes in whole, but not in part, at our option on the Reset Date, as described in the accompanying prospectus under the heading "Description of the Subordinated Debt Securities—General". Redemption is subject to APRA's prior written approval (which may or may not be given).

 

 

If we redeem the notes in these circumstances, the redemption price of each note redeemed will be equal to 100% of the Outstanding Principal Amount of such note. In addition, we will pay to the holders of the notes redeemed in these circumstances accrued but unpaid interest to, but excluding, the date of redemption.

Redemption for Taxation Reasons

 

Subject to certain limitations, we will have the right to redeem each of the notes in whole, but not in part, as described in the accompanying prospectus under the heading "Description of the Subordinated Debt Securities—Redemption of Subordinated Debt Securities—Redemption for Taxation Reasons". Redemption is subject to APRA's prior written approval (which may or may not be given).

 

 

If we redeem the notes in these circumstances, the redemption price of each note redeemed will be equal to 100% of the Outstanding Principal Amount of such note. In addition, we will pay to the holders of the notes redeemed in these circumstances accrued but unpaid interest to, but excluding, the date of redemption.

Redemption for Regulatory Reasons

 

Subject to certain limitations, we will have the right to redeem each of the notes in whole, but not in part, as described in the accompanying prospectus under "Description of the Subordinated Debt Securities—Redemption of Subordinated Debt Securities—Redemption for Regulatory Reasons". Redemption is subject to APRA's prior written approval (which may or may not be given).

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    If we redeem the notes in these circumstances, the redemption price of each note redeemed will be equal to 100% of the Outstanding Principal Amount of such note. In addition, we will pay to the holders of the notes redeemed in these circumstances accrued but unpaid interest to, but excluding, the date of redemption.

Consent to Receive Ordinary Shares

 

As more fully described in Section 2.4 under "Description of the Subordinated Debt Securities—Additional Provisions" in the accompanying prospectus, the subordinated indenture provides that, subject to any Write-off, each holder of notes by its purchase or holding thereof will be deemed to have irrevocably agreed that, upon Conversion, it consents to becoming a holder of Ordinary Shares and agrees to be bound by the constitution of Westpac.

Use of Proceeds

 

We estimate that the net proceeds from the offering of the notes, after taking into account the underwriting discount and deducting estimated offering expenses payable by us, will be US$1,244,646,000. We intend to use the net proceeds for general corporate purposes.

Governing Law

 

The subordinated indenture and the notes will be governed by, and construed in accordance with, the laws of the State of New York, without regard to conflict of law principles, except that the Non-Viability Trigger Event, Write-off, Conversion and subordination provisions will be governed by, and construed in accordance with, the laws of the State of New South Wales, Commonwealth of Australia.

Sinking Fund

 

The notes will not be entitled to the benefit of any sinking fund.

Form of Note

 

Notes, in global form, which we refer to as global notes, will be held in the name of The Depository Trust Company, which we refer to as the Depositary or DTC, or its nominee.

Trustee

 

The Bank of New York Mellon, which we refer to as the trustee.

Calculation Agent

 

The Bank of New York Mellon, which we refer to as the calculation agent.

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Summary Financial Information

        The following table sets forth summary consolidated financial information as of, and for the financial years ended, September 30, 2018, 2017, 2016, 2015 and 2014, and as of, and for the half-years ended, March 31, 2019 and 2018. We have derived the summary financial information from our audited consolidated financial statements and related notes as of, and for the financial years ended, September 30, 2018, 2017, 2016, 2015 and 2014, and our unaudited interim consolidated financial statements and related notes as of, and for the half-years ended, March 31, 2019 and 2018, which have been prepared in accordance with Australian Accounting Standards and International Financial Reporting Standards as issued by the International Accounting Standards Board.

        You should read this information together with the operating and financial review set forth in "Section 2" of our 2018 Form 20-F and our audited consolidated financial statements and the accompanying notes included in our 2018 Form 20-F, and the operating and financial review set forth in "Section 2" and "Section 3" of our 2019 U.S. Interim Financial Results Announcement and our unaudited interim consolidated financial statements and the accompanying notes included in our 2019 U.S. Interim Financial Results Announcement, each of which is incorporated by reference in this prospectus supplement. See "Where You Can Find More Information" in this prospectus supplement.

 
  As of and for the half-year
ended March 31,
  As of and for the financial year ended September 30,  
 
  2019(1)   2019(2)   2018   2018(1)   2018   2017   2016   2015   2014  
 
  (in US$
millions)

  (in A$ millions)

  (in US$
millions)

  (in A$ millions)

 
 
  (Unaudited)
   
   
   
   
   
   
 

Income statement(3)(4)

                                                       

Net interest income

    5,870     8,263     8,278     11,725     16,505     15,516     15,148     14,267     13,542  

Non-interest income

    1,219     1,716     2,805     3,909     5,502     6,286     5,837     7,375     6,395  

Net operating income before operating expenses and impairment charges

    7,089     9,979     11,083     15,634     22,007     21,802     20,985     21,642     19,937  

Operating expenses

    (3,616 )   (5,091 )   (4,655 )   (6,796 )   (9,566 )   (9,434 )   (9,217 )   (9,473 )   (8,547 )

Impairment charges

    (237 )   (333 )   (393 )   (504 )   (710 )   (853 )   (1,124 )   (753 )   (650 )

Profit before income tax

    3,236     4,555     6,035     8,334     11,731     11,515     10,644     11,416     10,740  

Income tax expense

    (980 )   (1,379 )   (1,835 )   (2,580 )   (3,632 )   (3,518 )   (3,184 )   (3,348 )   (3,115 )

Profit attributable to non-controlling interests

    (2 )   (3 )   (2 )   (3 )   (4 )   (7 )   (15 )   (56 )   (64 )

Net profit attributable to owners of Westpac Banking Corporation

    2,254     3,173     4,198     5,751     8,095     7,990     7,445     8,012     7,561  

Balance sheet(4)

                                                       

Loans

    507,437     714,297     701,393     504,164     709,690     684,919     661,926     623,316     580,343  

All other assets

    125,573     176,765     170,462     120,698     169,902     166,956     177,276     188,840     190,499  

Total assets

    633,010     891,062     871,855     624,862     879,592     851,875     839,202     812,156     770,842  

Deposits and other borrowings

    394,277     555,007     547,736     397,316     559,285     533,591     513,071     475,328     460,822  

Debt issues

    134,094     188,759     174,138     122,612     172,596     168,356     169,902     171,054     152,251  

Loan capital

    11,889     16,736     18,333     12,265     17,265     17,666     15,805     13,840     10,858  

All other liabilities

    47,331     66,625     68,983     46,796     65,873     70,920     82,243     98,019     97,574  

Total liabilities

    587,591     827,127     809,190     578,989     815,019     790,533     781,021     758,241     721,505  

Total shareholders' equity and non-controlling interests

    45,419     63,935     62,665     45,873     64,573     61,342     58,181     53,915     49,337  

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  As of and for the
half-year ended
March 31,
  As of and for the financial
year ended September 30,
 
 
  2019   2018   2018   2017   2016   2015   2014  
 
  (Unaudited)
   
   
   
   
   
 

Key Financial Ratios

                                           

Business Performance

                                           

Operating expenses to operating income ratio (%)

    51.0     42.0     43.5     43.3     43.9     43.8     42.9  

Net interest margin (%)

    2.09     2.16     2.13     2.06     2.10     2.09     2.09  

Capital adequacy

                                           

APRA Basel III:

                                           

Common equity Tier 1 (%)

    10.6     10.5     10.6     10.6     9.5     9.5     9.0  

Tier 1 ratio (%)

    12.8     12.8     12.8     12.7     11.2     11.4     10.6  

Total capital ratio (%)

    14.6     14.8     14.7     14.8     13.1     13.3     12.3  

Credit Quality

                                           

Total provisions for impairment on loans and credit commitments to total loans (basis points)

    56     45     43     45     54     53     60  

Other information

                                           

Full-time equivalent employees (number at financial year end)(5)

    34,241     35,720     35,029     35,096     35,580     35,484     36,596  

(1)
Solely for the convenience of the reader, we have translated the amounts in this column from Australian dollars into U.S. dollars using the noon buying rate in New York City for cable transfers of Australian dollars as certified for customs purposes for the Federal Reserve Bank of New York as of March 30, 2019 of A$1.00 to US$0.7104. These translations should not be considered representations that any such amounts have been, could have been or could be converted into U.S. dollars at that or at any other exchange rate or as of that or any other date.

(2)
The Group adopted AASB 9 Financial Instruments and AASB 15 Revenue from Contracts with Customers from October 1, 2018. Prior periods have not been restated to reflect the adoption of these standards. See Note 1 in Section 4 of our 2019 U.S. Interim Financial Results Announcement for further detail.

(3)
The Group has made presentational changes to the income statement. See Note 1 in Section 4 of our 2019 U.S. Interim Financial Results Announcement for further detail. Periods prior to 2018 have not been restated.

(4)
The above income statement extracts for the half-years ended March 31, 2019 and 2018 and balance sheet extracts as of March 31, 2019 and 2018 are derived from the unaudited consolidated financial statements included in the 2019 U.S. Interim Financial Results Announcement. The above income statement extracts for the financial years ended September 30, 2018, 2017 and 2016 and balance sheet extracts as of September 30, 2018 and 2017 are derived from the consolidated financial statements included in the 2018 Form 20-F. The above income statement extracts for the financial years ended September 30, 2015 and 2014 balance sheet extracts as of September 30, 2016, 2015 and 2014 are derived from consolidated financial statements previously published.

(5)
Full-time equivalent employees include full-time, pro-rata part-time, overtime, temporary and contract staff.

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RISK FACTORS

         Investors should carefully consider the risks described below and in the other information contained or incorporated by reference in this prospectus supplement and the accompanying prospectus, including the risks described in the 2019 U.S. Interim Financial Results Announcement, before making an investment decision. The risks and uncertainties described below and in such other information are not the only ones facing us or you, as holders of the notes. Additional risks and uncertainties that we are unaware of, or that we currently deem immaterial, may become important factors that affect us or you, as holders of the notes.

The notes are loss absorption instruments that involve risk and may not be a suitable investment for all investors

        The notes are loss absorption instruments designed to comply with applicable Australian banking regulations and involve certain risks. Each potential investor of the notes must determine the suitability (either alone or with the help of a financial advisor) of an investment in the notes in light of its own circumstances. In particular, each potential investor should understand thoroughly the terms of the notes, such as the provisions governing the Conversion or Write-off, including under what circumstances a Non-Viability Trigger Event could occur.

        A potential investor should not invest in the notes unless it has the knowledge and expertise (either alone or with the help of a financial advisor) to evaluate how the notes will perform, subject to the risks set forth herein and the risks described in our 2019 U.S. Interim Financial Results Announcement, the resulting effects on the likelihood of the Conversion or Write-off and the value of the notes, and the resultant impact on the potential investor's overall investment portfolio. Prior to making an investment decision, potential investors should consider carefully, in light of their own financial circumstances and investment objectives, all the information contained in or incorporated by reference into this prospectus supplement and the accompanying prospectus.

Payments are subject to Westpac being Solvent and if it is not Solvent, no payment will be made in respect of the notes

        All of Westpac's obligations to make payments in respect of the notes are subject to Westpac being Solvent (as defined in Section 4 under "Description of the Subordinated Debt Securities—Additional Provisions" in the accompanying prospectus). If Westpac is not Solvent at the time a payment would otherwise be due and payable or would not be Solvent immediately thereafter as a result of making such payment, no payment will be made in respect of the notes. Westpac's failure to pay in such circumstances will not be an event of default and any unpaid Outstanding Principal Amount will accrue interest and interest not paid will accumulate with compounding until it is paid and will be payable on the first business day on which Westpac is Solvent. However, if a Non-Viability Trigger Event occurs, all of Westpac's obligations to make payments in respect of the notes (to the extent Converted or Written-off) (including in respect of accrued but unpaid interest) will cease and holders of the notes will have no rights to recover any unpaid amounts and will receive Ordinary Shares upon Conversion, assuming Westpac is able to Convert the notes.

A Non-Viability Trigger Event may occur and the circumstances surrounding or triggering a Non-Viability Trigger Event are unpredictable

        If a Non-Viability Trigger Event occurs, Westpac must Convert or Write-off the notes.

        A "Non-Viability Trigger Event" occurs when APRA notifies Westpac in writing that it believes:

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        APRA has indicated that at this time it will not provide guidance as to how it will determine non-viability. Non-viability could be expected to include serious impairment of Westpac's financial position, concerns about our capital, funding or liquidity levels and/or insolvency. However, it is possible that APRA's definition of non-viability may not necessarily be confined to these matters and APRA's position on these matters may change over time. As the occurrence of a Non-Viability Trigger Event is at the discretion of APRA, there can be no assurance given as to the factors and circumstances that might give rise to such an event. A Non-Viability Trigger Event could occur at any time. It could occur on dates not previously contemplated by investors or which may be unfavorable in light of then-prevailing market conditions or investors' individual circumstances or timing preferences.

        The section entitled "Risks factors" in the 2019 U.S. Interim Financial Results Announcement sets out a number of general risks associated with Westpac's businesses. If one, or a combination, of these risks leads to a significant capital loss, or prolonged difficulties in raising funding or maintaining sufficient liquidity, Westpac believes this may be the type of situation in which APRA would become concerned and notify Westpac that it has become non-viable. These examples are not exhaustive and there may be other risks which affect the financial performance and condition of Westpac and, consequently, the likelihood of the occurrence of a Non-Viability Trigger Event.

The Ordinary Shares to be received upon Conversion are likely to be worth significantly less than the Outstanding Principal Amount of the notes

        Upon the occurrence of a Non-Viability Trigger Event, if the notes are required to be Converted, all or some notes (or a percentage of the Outstanding Principal Amount of each note) will Convert into the applicable Conversion Number of Ordinary Shares, subject to the Maximum Conversion Number. In these circumstances, it is likely that the Maximum Conversion Number will apply and limit the number of Ordinary Shares to be issued. Upon Conversion, the value of Ordinary Shares received is likely to be significantly less than the Outstanding Principal Amount of the notes because:

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        The Maximum Conversion Number may be adjusted to reflect a consolidation, division or reclassification, or pro rata bonus issue, of Ordinary Shares. However, no adjustment will be made to it on account of other transactions which may affect the price of Ordinary Shares, including for example, rights issues, returns of capital, buy-backs or special dividends. The transactions that Westpac may undertake with respect to its share capital are not limited and any such action may increase the risk that holders receive only the Maximum Conversion Number and so adversely affect the position of holders.

        However, even though Conversion is the primary method of loss absorption, the notes are subject to possible Write-off.

Ordinary Shares are a different type of investment to the notes and investors may be obliged to accept Ordinary Shares

        While Westpac currently has Ordinary Shares listed on the ASX, the Ordinary Shares issued on Conversion may not be listed, for example, if Westpac is acquired by another entity and delisted. The Ordinary Shares may not be able to be sold at prices representing their value based on the VWAP. In particular, the VWAP price will be based on trading days which occurred immediately before the occurrence of the Non-Viability Trigger Event.

        Ordinary Shares are a different type of investment to the notes. Dividends are payable at the absolute discretion of Westpac and the amount of each dividend is also discretionary. In a Winding-Up, claims of holders of Ordinary Shares rank behind claims of holders of all other securities and debts of Westpac. The market price of Ordinary Shares may be more sensitive than that of the notes to changes in Westpac's performance, operational issues and other business issues.

        Potential investors in the notes should understand that if a Non-Viability Trigger Event occurs and the notes are Converted, investors are obliged to accept Ordinary Shares or have such Ordinary Shares issued to the Holders' Nominee to be delivered or sold on their behalf.

Westpac has no obligation to have or maintain Relevant Tier 1 Securities which are required to be Converted or Written-off ahead of the notes following a Non-Viability Trigger Event

        If Westpac is only required to Convert a certain amount of Relevant Securities (as defined in Section 4 under "Description of the Subordinated Debt Securities—Additional Provisions" in the accompanying prospectus) Westpac will determine the amount of notes which will be Converted or Written-off and other Relevant Securities which will be converted, written-off or written-down as follows:

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        However, Westpac has no obligation to have or maintain on issue Relevant Tier 1 Securities which are required to be converted, written-off or written-down ahead of the notes and other Relevant Tier 2 Securities and gives no assurance that there will be any such instruments on issue at the time at which the notes may be required to be Converted or Written-off.

Holders rights will be terminated if Conversion does not occur within five ASX Business Days after the Non-Viability Trigger Event Date

        If Conversion of the notes (or a percentage of the Outstanding Principal Amount of the notes) does not occur for any reason within five ASX Business Days after the Non-Viability Trigger Event Date (including, for example, due to applicable law, order of a court or action of any government authority, including regarding the insolvency, Winding-Up or other external administration of Westpac or as a result of Westpac's inability or failure to comply with its obligations under the terms and conditions of the notes in relation to Conversion), then the notes (or a percentage of the Outstanding Principal Amount of the notes to be Converted) will be Written-off and the rights of holders in relation to such notes (including with respect to payments of interest or accrued interest, and the repayment of Outstanding Principal Amount and, upon Conversion, the receipt of Ordinary Shares issued in respect of such notes) will be immediately and irrevocably written-off and terminated with effect on and from the Non-Viability Trigger Event Date and investors will lose all or some of their investment and will not receive any compensation.

In certain circumstances, an investor holding notes subject to Conversion may not receive Ordinary Shares, only the proceeds thereof, as the Ordinary Shares would be issued upon Conversion to the Holders' Nominee for immediate sale, which sale is likely to occur when market conditions are not favorable

        If an investor holding notes subject to Conversion: (i) notifies us no less than 15 business days prior to the Non-Viability Trigger Event Date that it does not wish to receive Ordinary Shares as a result of the Conversion (and does not subsequently notify us otherwise); (ii) is a Foreign Holder or an Ineligible Holder (each as defined in Section 4 under "Description of the Subordinated Debt Securities—Additional Provisions" in the accompanying prospectus); (iii) is a Clearing System Holder (as defined in Section 4 under "Description of the Subordinated Debt Securities—Additional Provisions" in the accompanying prospectus); (iv) does not provide the information as set forth in Section 3.10 under "Description of the Subordinated Debt Securities—Additional Provisions" in the accompanying prospectus to us prior to the Non-Viability Trigger Event Date; or (v) where a FATCA Withholding (as defined in Section 4 under "Description of the Subordinated Debt Securities—Additional Provisions" in the accompanying prospectus) is required to be made in respect of the Ordinary Shares issued on the Conversion, the Ordinary Shares that the investor would receive on Conversion will instead be issued to the Holders' Nominee (as defined in Section 4 under "Description of the Subordinated Debt Securities—Additional Provisions" in the accompanying prospectus) (which may not be Westpac or any of its Related Entities (which has the meaning given by APRA from time to time)), which will sell the shares on behalf of that investor. The Holders' Nominee will have no duty to seek a fair market price, or to engage in an arm's length transaction in such sale, and market conditions are likely to have deteriorated following the Non-Viability Trigger Event that caused the Conversion.

        To enable Westpac to issue Ordinary Shares to an investor on Conversion, investors need to have appropriate securities accounts in Australia as set forth in Section 3.10 under "Description of the Subordinated Debt Securities—Additional Provisions" in the accompanying prospectus for the receipt of Ordinary Shares and to provide to us, prior to the Non-Viability Trigger Event Date, their name and address and certain security holder account and other details. Investors should understand that a failure

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to provide this information to us by the Non-Viability Trigger Event Date may result in Westpac issuing the Ordinary Shares to the Holders' Nominee which, if the information is not provided to the Holders' Nominee within 30 days of the date on which Ordinary Shares are issued to the Holders' Nominee, will sell the Ordinary Shares and pay the net proceeds to the investors. In this situation, investors will have no rights against us in relation to the Conversion and will not be able to trade in any Ordinary Shares issued to the Holders' Nominee.

Holders cannot request redemption or Conversion of the notes and may not be able to sell the notes at an acceptable price or at all

        Holders have no right to request redemption or Conversion of the notes at any time. Therefore, prior to the Maturity Date, unless Westpac has the right to and elects to redeem the notes early (redemption is subject to APRA's prior written approval, which may or may not be given) in order to realize an investment, a holder would need to sell its notes at the prevailing market price. Depending on market conditions at the time, the notes may be trading at a market price below the issue price and/or the market for the notes may not be liquid. Westpac does not guarantee that holders will be able to sell each note at an acceptable price or at all.

The Ordinary Share price used to calculate the Conversion Number of Ordinary Shares may be different from the market price of Ordinary Shares at the time of Conversion

        The number of Ordinary Shares issued to holders upon Conversion will generally depend on the VWAP of Ordinary Shares over the five ASX Business Days on which trading in Ordinary Shares took place immediately preceding but not including the Non-Viability Trigger Event Date, and is subject to the Maximum Conversion Number. Accordingly, the Ordinary Share price used to calculate the Conversion Number of Ordinary Shares may be different to the market price of Ordinary Shares at the time of Conversion so that the value of Ordinary Shares received may be less than the value of those Ordinary Shares based on the Ordinary Share price on the Non-Viability Trigger Event Date. See "—The Ordinary Shares to be received upon Conversion are likely to be worth significantly less than the Outstanding Principal Amount of the notes."

Because the subordinated indenture contains no limit on the amount of additional debt that we may incur, our ability to make timely payments on the notes you hold may be affected by the amount and terms of our future debt

        Our ability to make timely payments on our outstanding debt may depend on the amount and terms of our other obligations, including any additional Subordinated Debt Securities that we may issue. The subordinated indenture does not contain any limitation on the amount of indebtedness that we may issue in the future. As we issue additional Subordinated Debt Securities under the subordinated indenture or incur other indebtedness, unless our earnings grow in proportion to our debt and other fixed charges, our ability to service the notes on a timely basis may become impaired.

The terms of the subordinated indenture and the notes provide only limited protection against significant events that could adversely impact your investment in the notes

        The subordinated indenture governing the notes does not:

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        As a result of the foregoing, when evaluating the terms of the notes, you should be aware that the terms of the subordinated indenture and the notes do not restrict our ability to engage in, or to otherwise be a party to, a variety of corporate transactions, circumstances and events that could have an adverse impact on your investment in the notes.

We may fail to pay principal or interest and there are limited remedies available for an event of default

        There is a risk that we may default on payment of some or all of the principal or interest on the notes. If we do not pay some or all of the principal or interest on the notes, holders of notes may lose some or all of the money invested in the notes.

        The remedies available to holders of notes in the event of a default in the payment of principal or interest are limited. Failure to pay principal or interest on the notes because the solvency conditions described herein are not satisfied is not an event of default.

        If principal or interest on the notes is not paid in circumstances where the solvency conditions described herein have been satisfied, that is an event of default and the holder of notes may institute proceedings:

        There is a risk that the entire amount owed may not be recovered even if the holder of notes institutes proceedings against us. Further, although the subordinated indenture and the notes may specify certain remedies (for example, seeking an order for the winding-up of us in Australia), the grant of those remedies may be in the discretion of a court and, as such, may not be granted.

        Further, a holder of notes will have no right to accelerate payment or exercise any other remedies (including any right to sue for damages) as consequences of any default other than as specifically described in this prospectus supplement and the accompanying prospectus. In the event of a Winding-Up in Australia (but not in any other jurisdiction), the notes will become immediately due and payable, unless they have been Converted or Written - Off. This will be the only circumstance in which the payment of principal on notes may be accelerated.

We have broad rights to redeem the notes, including in the event of certain tax and regulatory events and, if we do so, that could adversely affect your return on the notes

        We may redeem all, but not less than all, of the notes at our option on the Reset Date. We may also redeem all, but not less than all, of the notes at any time following the occurrence of an Adverse Tax Event (as defined under "Description of the Subordinated Debt Securities—Redemption of Subordinated Debt Securities—Redemption for Taxation Reasons" in the accompanying prospectus) or Regulatory Event (as defined under "Description of the Subordinated Debt Securities—Redemption of Subordinated Debt Securities—Redemption for Regulatory Reasons" in the accompanying prospectus), provided that we have obtained, in the case of an Adverse Tax Event, a supporting opinion of legal or tax advisers of recognized standing in Australia (or, if a Relevant Transaction (as defined under "Description of the Subordinated Debt Securities—Redemption of Subordinated Debt Securities—Redemption for Taxation Reasons" in the accompanying prospectus) occurs and the home jurisdiction

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for tax purposes of such other entity is not Australia, legal or tax advisers of recognized standing in such other jurisdiction), or, in the case of a Regulatory Event, a supporting opinion of advisers of recognized standing in Australia or confirmation from APRA.

        An Adverse Tax Event will occur if we determine that as a result of any amendment to, clarification of or change in Tax Legislation (as defined in Section 4 under "Description of the Subordinated Debt Securities—Additional Provisions" in the accompanying prospectus) which has been or will be effected or any Administrative Action (as defined in Section 4 under "Description of the Subordinated Debt Securities—Additional Provisions" in the accompanying prospectus) under or in connection with Tax Legislation or any amendment to, clarification of, or change in, any such Administrative Action, being in each case by a legislative body, court, government authority or regulatory body on or after the relevant Issue Date (but which we did not expect at the Issue Date or, upon the occurrence of a Relevant Transaction and the home jurisdiction for tax purposes of such other entity is not Australia, the date the Relevant Transaction is completed):

        A Regulatory Event will occur if either:

we are not or will not be entitled to treat all of the notes as Tier 2 Capital (as defined in Section 4 under "Description of the Subordinated Debt Securities—Additional Provisions" in the accompanying prospectus) in whole, provided that, in each case, we did not expect at the Issue Date that the matter giving rise to the Regulatory Event would occur.

        If we elect to redeem notes, APRA's prior written approval is required. There can be no certainty that APRA will provide its prior written approval. We may only redeem the notes if we replace them with capital of the same or better quality (and the replacement is done under conditions that are sustainable for Westpac's income capacity) or obtain confirmation that APRA is satisfied that we do not have to replace the notes.

        Holders of notes have no right to request or require a redemption of the notes. Any redemption may occur on dates not previously contemplated by holders of notes, which may be disadvantageous in light of market conditions or holders' individual circumstances. This means that the period for which holders of notes will be entitled to the benefit of the rights attaching to the notes is unknown.

        Where holders of notes receive cash on redemption, the rate of return at which such holders could reinvest their funds may be lower than the interest rate on the notes. Further, upon redemption, holders of notes will receive the Outstanding Principal Amount of the notes which may be less than their market value immediately prior to redemption.

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The interest rate on the notes could be reduced and the market value of the notes could be adversely impacted when the interest rate is reset on the Reset Date

        When the interest rate is reset on the Reset Date, there is a risk that the new interest rate may become less attractive when compared to the rates of return available on comparable securities issued by us or other entities. The interest rate will be reset on the Reset Date based on the 5-Year U.S. Treasury Rate as published in the most recent H.15 (as defined herein), and such H.15 which includes a yield to maturity for U.S. Treasury securities with a maturity of five years may have been published some time prior to the Reset Determination Date, and, as a result, may be less than the interest rate that applies immediately prior to the Reset Date, which would affect the amount of any interest payments under the notes and may adversely affect the market value of the notes. See "Description of the Notes."

Any changes to the capital adequacy framework in Australia may adversely impact the price of the notes or increase the chance of Conversion of the notes

        Any fall in our Common Equity Tier 1 Capital Ratio (as defined in Section 4 under "Description of the Subordinated Debt Securities—Additional Provisions" in the accompanying prospectus) as a result of changes to APRA's capital adequacy framework may adversely impact the market price of the notes or potentially increase the chance at a later date that Conversion of the notes takes place due to the occurrence of a Non-Viability Trigger Event (a Non-Viability Trigger Event will occur where APRA notifies us in writing that it believes Conversion of some or all of the notes or a public sector injection of capital, or equivalent support, is necessary because, without it, we would become non-viable).

Westpac has substantial liabilities which would have a higher priority in the event of its insolvency

        The notes will be our direct, unsecured and subordinated obligations. In the event of a Winding-Up, to the extent the notes have not previously been Converted or Written-off, the notes would (i) be subordinate to, and rank junior in right of payment to, the obligations of Westpac to Senior Creditors (as defined in Section 4 under "Description of the Subordinated Debt Securities—Additional Provisions" in the accompanying prospectus), and certain debts required to be preferred by law, and all such obligations to Senior Creditors and debts required to be preferred by law shall be entitled to be paid in full before any payment shall be paid on account of any sums payable in respect of the notes, (ii) rank equally with obligations of Westpac to the holders of other Subordinated Debt Securities that have not been Converted or Written-off (or that have been partially Converted or Written-off), and the obligations of Westpac to holders of Equal Ranking Instruments and (iii) rank prior to, and senior in right of payment to the obligations of Westpac to holders of Ordinary Shares, and other Junior Ranking Capital Instruments. Section 13A(3) of the Australian Banking Act provides that if Westpac becomes unable to meet its obligations or suspends payment, the assets of Westpac in Australia are to be made available to meet certain of Westpac's liabilities in priority to all other liabilities of Westpac (including the obligations of Westpac under the notes). However, it is unlikely a Winding - Up will occur without a Non-Viability Trigger Event having occurred first and the notes being Converted or Written-Off. In that event:

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        The notes will not be protected accounts or deposit liabilities of Westpac for the purposes of the Australian Banking Act.

        The liabilities which have priority, by virtue of section 13A(3) of the Australian Banking Act, to the claims of holders in respect of the notes will be substantial, as such liabilities include (but are not limited to) liabilities owed to APRA in respect of amounts payable by APRA to holders of protected accounts (as defined below) kept with Westpac in connection with the financial claims scheme established under the Australian Banking Act, which we refer to as the FCS, costs of APRA in exercising its powers and performing its functions relating to Westpac in connection with the FCS, liabilities in Australia in relation to protected accounts kept with Westpac, debts due to the Reserve Bank of Australia, which we refer to as the RBA, and liabilities under certified industry support contracts. Section 13A(3) applies in a winding-up of Westpac and other circumstances if Westpac is unable to meet its obligations or suspends payment. A "protected account" is either (a) an account where the "authorised deposit-taking institution" is required to pay the account-holder, on demand or at an agreed time, the net credit balance of the account, or (b) another account or financial product prescribed by regulation.

        Further, certain assets, such as the assets of Westpac in a cover pool for covered bonds issued by Westpac, are excluded from constituting assets in Australia for the purposes of Section 13A of the Australian Banking Act, and these assets are subject to the prior claims of the covered bond holders and certain other secured creditors in respect of the covered bonds. The assets which are subject to such prior claims may also be substantial. In addition, future changes to applicable law may extend the debts required to be preferred by law or the assets to be excluded.

        In addition, in Section 16(2) of the Australian Banking Act, certain other debts of Westpac due to APRA shall in a winding-up of Westpac have, subject to Section 13A(3) of the Australian Banking Act, priority over all other unsecured debts of Westpac, and Section 86 of the Reserve Bank Act 1959 of Australia provides that in a winding-up of Westpac, debts due by Westpac to the RBA shall, subject to Section 13A(3) of the Australian Banking Act, have priority over all other debts of Westpac.

        Therefore, in the event of Westpac's insolvency, there is no assurance that Westpac will have sufficient assets to repay the notes in full or at all. See "Description of the Subordinated Debt Securities—Ranking" in the accompanying prospectus.

Holders of the notes or the Ordinary Shares will not be entitled to receive any gross up or other additional amounts if any person is required to withhold or deduct amounts arising under or in connection with FATCA from any payments made with respect to the notes or the Ordinary Shares

        Legislation known as "FATCA" was enacted in the United States on March 18, 2010. This description is based on Sections 1471 to 1474 of the U.S. Internal Revenue Code of 1986, as amended, which we refer to as the Code, including any regulations or official interpretations issued, agreements (including, without limitation, intergovernmental agreements) entered into or non-U.S. laws enacted with respect thereto, which we refer to as FATCA. Future guidance may affect the application of FATCA to the notes and the Ordinary Shares.

        It is possible that, in order to comply with FATCA, we (or, if the notes or the Ordinary Shares are held through another financial institution, such other financial institution) may be required (pursuant to an agreement entered into with the United States or under applicable law (including pursuant to the terms of any applicable intergovernmental agreement entered into between the United States and any other jurisdiction)) (i) to request certain information from the holders or beneficial owners of the notes or the Ordinary Shares, which information may be provided to the U.S. Internal Revenue Service, which we refer to as the IRS, and (ii) in the case of such other financial institution to withhold U.S. tax on any portion of any payment with respect to the notes, with respect to the issuance of any Ordinary Shares upon any Conversion or with respect to the Ordinary Shares treated as a foreign passthru

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payment made two years or more after the date on which the final regulations that define "foreign passthru payments" are published if such information is not provided or if payments are made to certain foreign financial institutions that have not entered into a similar agreement with the United States (and are not otherwise required to comply with the FATCA regime under applicable law (including pursuant to the terms of any applicable intergovernmental agreement entered into between the United States and any other jurisdiction)).

        If any person is required to withhold or deduct amounts arising under or in connection with FATCA from any payments made with respect to the notes, with respect to the issuance of any Ordinary Shares upon any Conversion or with respect to the Ordinary Shares, the holders and beneficial owners of the notes, and the holders and beneficial owners of the Ordinary Shares issued upon any Conversion, will not be entitled to receive any gross up or other additional amounts on account of any such withholding or deduction. FATCA is complex and its application to the notes, any Conversion and the Ordinary Shares remains uncertain. Prospective investors are advised to consult their own tax advisors as to the application of FATCA to the notes, any Conversion and the Ordinary Shares.

The IRS could successfully assert that the notes should be treated as indebtedness for U.S. federal income tax purposes, which could have adverse U.S. federal income tax consequences to a beneficial owner of the notes

        As discussed in "Taxation" in the accompanying prospectus, there is no statutory, judicial or administrative authority that directly addresses the U.S. federal income tax treatment of securities similar to the notes. It is therefore unclear whether the notes should be treated as indebtedness or equity for U.S. federal income tax purposes. Nonetheless, although not free from doubt, based upon an analysis of the relevant facts and circumstances, under applicable law as of the date hereof, it is more likely than not that the notes will be treated as equity for U.S. federal income tax purposes. Notwithstanding the foregoing, there can be no assurance that the IRS could not successfully assert that the notes should be treated as indebtedness for U.S. federal income tax purposes, and there can be no assurance that any such tax treatment would not have adverse U.S. federal income tax consequences to a beneficial owner of the notes. Due to the lack of authority regarding the classification of the notes for U.S. federal income tax purposes, prospective investors should consult their own tax advisors regarding the appropriate classification of the notes. See "Taxation—United States Taxation" in the accompanying prospectus.

The exercise of administrative powers by APRA or other regulatory authorities that supervise Westpac may result in adverse consequences to the trustee and holders of notes

        The exercise of administrative powers by APRA or other regulatory authorities that supervise Westpac may result in adverse consequences to the trustee and holders of notes. In particular, under the Australian Banking Act, for the purpose of protecting depositors and maintaining the stability of the Australian financial system, APRA has administrative power, among other things, to issue a direction to us regarding the conduct of our business, including prohibiting making payments with respect to our and certain of our related entities' debt obligations (including the notes), and, if we become unable to meet our obligations or suspend payment (and in certain other limited circumstances), to appoint a "Banking Act statutory manager" to take control of our business (including the businesses of certain of our related entities).

        The Australian Banking Act was recently amended to enhance APRA's powers to facilitate resolution of the entities it regulates (and their subsidiaries). Additional powers which have been given to APRA and which impact Westpac include greater oversight, management and directions powers in relation to Group entities which were previously not regulated by APRA, increased statutory management powers over certain other entities within the Group and changes which are designed to give statutory recognition to the conversion or write-off of regulatory capital instruments.

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Insolvency and similar proceedings are likely to be governed by Australian Law

        In the event that Westpac becomes insolvent, insolvency proceedings are likely to be governed by Australian law. Australian insolvency laws are different from the insolvency laws of certain other jurisdictions, including the United States. In particular, the voluntary administration procedure under the Australian Corporations Act, which provides for the potential re-organization of an insolvent company, is different from Chapter 11 under the U.S. Bankruptcy Code and may differ from similar provisions under the insolvency laws of other non-Australian jurisdictions.

        In addition, to the extent that the holders of the notes are entitled to any recovery with respect to the notes in any bankruptcy or certain other events in bankruptcy, insolvency, dissolution or reorganization relating to Westpac, those holders might not be entitled in such proceedings to a recovery in U.S. dollars and might be entitled only to a recovery in Australian dollars.

There is no existing public market for the notes, a market may not develop and you may have to hold your notes to maturity

        The notes are a new issue of securities and there is no existing trading market for the notes. We have been advised by the underwriters that the underwriters intend to make a secondary market for the notes. However, they are not obligated to do so and may discontinue making a secondary market for the notes at any time without notice. If a trading market for any series of notes develops, no assurance can be given as to how liquid that trading market will be. If any of the notes are traded after their initial issuance, they may trade at a discount from their initial offering price, depending upon prevailing interest rates, the market for similar securities and other factors, including general economic conditions and our financial condition, performance and prospects.

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USE OF PROCEEDS

        We estimate that the net proceeds from the offering of the notes, after taking into account the underwriting discount and deducting estimated offering expenses payable by us, will be US$1,244,646,000. We intend to use the net proceeds for general corporate purposes.

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CAPITALIZATION

        We set forth below our cash and cash equivalents and our capitalization as of March 31, 2019 and as adjusted to give effect to the issuance of the notes, the issuance of $1,000,000,000 aggregate principal amount of 4.421% Subordinated Notes due 2039, which we refer to as the 2039 Notes, and the repayment of maturing debt issues and issuance of new debt issues subsequent to March 31, 2019 and on or prior to June 30, 2019. This information should be read in conjunction with our consolidated financial statements, including the notes thereto, and other financial information pertaining to us incorporated herein by reference.

 
  As of
March 31, 2019
 
 
  Actual   As adjusted  
 
  (unaudited, in A$
millions)

 

Cash and balances with central banks

    19,486     19,486  

Debt issues

    188,759     184,418 (1)

Notes offered hereby

        1,783 (2)

2039 Notes

        1,427 (2)

Loan capital

    16,736     16,736  

Shareholders' equity and non-controlling interests

             

Share capital

    35,794     35,794  

Reserves

    1,141     1,141  

Retained profits

    26,949     26,949  

Non-controlling interests

    51     51  

Total shareholders' equity and non-controlling interests

    63,935     63,935  

Total capitalization

    269,430     268,299  

(1)
The net adjustment of A$4,341 million reflects the repayment of maturing debt issues and the issuance of new debt issues subsequent to March 31, 2019 and on or before June 30, 2019. Debt issues issued in a currency other than Australian dollars have been converted into Australian dollars using the closing spot rate on June 28, 2019.

(2)
We have translated the aggregate principal amount of the notes and the 2039 Notes from U.S. dollars into Australian dollars using the noon buying rate in New York City for cable transfers of Australian dollars as certified for customs purposes for the Federal Reserve Bank of New York as of June 28, 2019 of A$1.00 to US$0.7009. This translation should not be considered a representation that such amount has been, could have been or could be converted into Australian dollars at that or at any other exchange rate or as of that or any other date.

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DESCRIPTION OF THE NOTES

         The following description is a summary of certain terms of the notes. This summary supplements the description of the notes in the accompanying prospectus and, to the extent it is inconsistent, replaces the description in the accompanying prospectus. The descriptions of certain terms of the notes and the subordinated indenture do not purport to be complete, and reference is hereby made to the Third Amended and Restated Subordinated Indenture, referred to below, as supplemented by a supplemental indenture relating to the notes, which we refer to as the Supplemental Indenture, which will be filed as an exhibit to a Report on Form 6-K, and the Trust Indenture Act of 1939, as amended. You may also request copies of the Third Amended and Restated Subordinated Indenture and the Supplemental Indenture from us at our address set forth under "Where You Can Find More Information." References to "we", "us" and "our" in this description of the notes refer only to Westpac Banking Corporation and not to any of its subsidiaries.

General

        We will issue the notes under the Third Amended and Restated Subordinated Indenture, dated as of November 9, 2018, between Westpac Banking Corporation and The Bank of New York Mellon, as trustee, which we refer to as the base indenture, as supplemented by the Supplemental Indenture, to be dated the date of issuance of the notes, between us and the trustee. We refer to the base indenture, as supplemented by the Supplemental Indenture, together as the subordinated indenture.

        We will initially issue US$1,250,000,000 aggregate principal amount of the notes. The notes will be issued in minimum denominations of US$2,000 and integral multiples of US$1,000 in excess thereof, which shall be a "Denomination" for purposes of the definition in Section 4 under "Description of the Subordinated Debt Securities—Additional Provisions" in the accompanying prospectus. We may from time to time, without the consent of the existing holders, create and issue additional notes having the same terms and conditions as the notes being offered hereby in all respects, except for Issue Date, issue price and, if applicable, the first date from which interest accrues and the first payment of interest thereon. Additional notes issued in this manner will be consolidated with, and will form a single series with, the previously outstanding notes unless such additional notes will not be treated as fungible with the notes being offered hereby for U.S. federal income tax purposes. The notes offered hereby and any additional notes of the same series would rank equally and ratably.

        The notes will be our direct, unsecured and subordinated obligations, subject to certain solvency conditions described herein. In the event of a Winding-Up, to the extent the notes have not previously been Converted or Written-off (or that have been partially Converted or Written-off), the notes would (i) be subordinate to, and rank junior in right of payment to, the obligations of Westpac to Senior Creditors, and certain debts required to be preferred by law, and all such obligations to Senior Creditors and debts required to be preferred by law shall be entitled to be paid in full before any payment shall be paid on account of any sums payable in respect of the notes, (ii) rank equally with obligations of Westpac to the holders of other Subordinated Debt Securities that have not been Converted or Written-off (or that have been partially Converted or Written-off), and the obligations of Westpac to holders of Equal Ranking Instruments and (iii) rank prior to, and senior in right of payment to the obligations of Westpac to holders of Ordinary Shares, and other Junior Ranking Capital Instruments. Section 13A(3) of the Australian Banking Act provides that if Westpac becomes unable to meet its obligations or suspends payment, the assets of Westpac in Australia are to be made available to meet certain of Westpac's liabilities in priority to all other liabilities of Westpac (including the obligations of Westpac under the notes). However, it is unlikely a Winding - Up will occur without a Non-Viability Trigger Event having occurred first and the notes being Converted or Written-off. In that event:

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        The notes will not be protected accounts or deposit liabilities of Westpac for the purposes of the Australian Banking Act.

        Each of the notes will constitute a separate series of Subordinated Debt Securities as described in the accompanying prospectus. Except as described in this prospectus supplement, the terms generally applicable to notes, as described under "Description of the Subordinated Debt Securities" in the accompanying prospectus, will be applicable to each of the notes.

        The notes are not entitled to the benefit of any sinking fund.

        The notes will mature on July 24, 2034.

        From and including July 24, 2019, which we refer to as the Issue Date, to but excluding the interest payment date on July 24, 2029, which we refer to as the Reset Date, the notes will bear interest on the Outstanding Principal Amount at a rate of 4.110% per year, and on and after the Reset Date to but excluding July 24, 2034, which we refer to as the Maturity Date, the notes will bear interest on the Outstanding Principal Amount at a fixed rate per year equal to the 5-Year U.S. Treasury Rate plus the Spread (rounded to three decimal places with 0.0005 rounded upwards) (each as defined below). We will pay interest on the notes semi-annually in arrears on January 24 and July 24 of each year, subject in each case to the business day convention set forth below, and certain solvency conditions described herein, beginning on January 24, 2020, until the notes shall have been paid in full. Interest on a note will be paid to the person in whose name that note was registered at the close of business on the January 9 or July 9, as the case may be, whether or not a business day, prior to the applicable interest payment date, except in the case of the interest payment date that is also the Maturity Date of the notes. The amount of interest on the notes payable for any period less than a full interest period shall be computed on the basis of a 360-day year consisting of twelve 30-day months and the actual days elapsed in a partial month in such period. Subject to the limitations set forth in Section 3.1(b) under "Description of the Subordinated Debt Securities—Additional Provisions" in the accompanying prospectus, any payment of principal or interest required to be made on an interest payment date that is not a business day will be made on the next succeeding business day, and no interest will accrue on that payment for the period from and after the interest payment date to the date of payment on the next succeeding business day.

        For purposes of the notes, "business day" means each Monday, Tuesday, Wednesday, Thursday and Friday that is not a day on which banking institutions in Sydney, Australia, New York, New York, or London, United Kingdom are authorized or obligated by law or executive order to close.

        Payments under Section 3.1(b) under "Description of the Subordinated Debt Securities—Additional Provisions" in the accompanying prospectus shall not be subject to delays on account of any business day convention.

        " 5-Year U.S. Treasury Rate " is calculated by the calculation agent as an interest rate expressed as a percentage determined to be the per annum rate equal to the yield to maturity for U.S. Treasury securities with a maturity of five years as published in the most recent H.15.

        " H.15 " means the daily statistical release designated as such, or any successor publication, published by the Board of Governors of the United States Federal Reserve System that establishes yield on actively traded U.S. Treasury securities under the caption "Treasury constant maturities", and

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" most recent H.15 " means the H.15 which includes a yield to maturity for U.S. Treasury securities with a maturity of five years published closest in time but prior to the Reset Determination Date.

        " Reset Business Day " means a day on which commercial banks and foreign exchange markets settle payments and are open for general business (including dealing in foreign exchange and foreign currency deposits) in Sydney, Australia, New York, New York and London, United Kingdom.

        " Reset Determination Date " means the second Reset Business Day immediately preceding the Reset Date.

        " Spread " means 2.000 per cent per year, being the difference between the re-offer yield on the date hereof and the Benchmark 10-Year Treasury Yield at the time of pricing on the date hereof.

Redemption

        Subject to certain limitations, we will have the right to redeem the notes in whole, but not in part, at our option on the Reset Date, as described in the accompanying prospectus under the heading "Description of the Subordinated Debt Securities—General".

        In addition, subject to certain limitations, if an Adverse Tax Event, as described in the accompanying prospectus under "Description of the Subordinated Debt Securities—Redemption of Subordinated Debt Securities—Redemption for Taxation Reasons", or a Regulatory Event, as described in the accompanying prospectus under "Description of the Subordinated Debt Securities—Redemption of Subordinated Debt Securities—Redemption for Regulatory Reasons", occurs, we will have the right to redeem each of the notes in whole, but not in part.

        Redemption is subject to APRA's prior written approval (which may or may not be given).

        If we redeem the notes in these circumstances, the redemption price of each note redeemed will be equal to 100% of the Outstanding Principal Amount of such note. In addition, we will pay to the holders of the notes redeemed in these circumstances accrued but unpaid interest to, but excluding, the date of redemption.

Non-viability, Conversion and Write-off

        The notes are subject, upon the occurrence of a Non-Viability Trigger Event, to Conversion or possible Write-off, as more fully described in the accompanying prospectus. If any notes are Converted following a Non-Viability Trigger Event, it is likely that the Maximum Conversion Number will apply and limit the number of Ordinary Shares to be issued. In this case, the value of the Ordinary Shares received is likely to be significantly less than the Outstanding Principal Amount of those notes. The Australian dollar may depreciate in value against the U.S. dollar by the time of Conversion. In that case, the Maximum Conversion Number is more likely to apply.

        If Conversion of the notes (or a percentage of the Outstanding Principal Amount of the notes) does not occur for any reason (including, for example, due to applicable law, order of a court or action of any government authority, including regarding the insolvency, Winding-Up or other external administration of Westpac or as a result of Westpac's inability or failure to comply with its obligations under the terms and conditions of the notes in relation to Conversion) within five ASX Business Days after the Non-Viability Trigger Event Date (each as defined in Section 4 under "Description of the Subordinated Debt Securities—Additional Provisions" in the accompanying prospectus), the notes (or a percentage of the Outstanding Principal Amount of the notes to be Converted) will be Written-off and the holders' rights in relation to the notes (including with respect to payments of interest or accrued interest, and the repayment of Outstanding Principal Amount and, upon Conversion, the receipt of Ordinary Shares issued in respect of such notes) will be immediately and irrevocably written-off and terminated with effect on and from the Non-Viability Trigger Event Date, as described under

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"Description of the Subordinated Debt Securities—Additional Provisions" in the accompanying prospectus.

Events of Default

        The subordinated indenture provides that, if an event of default in respect of the notes shall have occurred and be continuing, the sole remedies for either the trustee or the holder of any outstanding notes shall be the remedies described below.

        The subordinated indenture defines an event of default in respect of the notes as any of the following events or circumstances:

        Upon the occurrence of an event of default for a failure to pay principal or interest as described above, the sole remedies for the trustee or the holder of any notes shall be to bring proceedings:

        In the event of a Winding - Up in Australia (but not in any other jurisdiction), the notes will, without any further action on the part of the trustee or any holder thereof, become immediately due and payable by Westpac, unless they have been Converted or Written-off, and the trustee or any such holder may, subject to the limitations described under "—Additional Provisions—Status and Subordination", prove or claim for the Outstanding Principal Amount of each note it holds (together with all interest accrued but unpaid to the date of payment). However, it is unlikely a Winding - Up will occur without a Non-Viability Trigger Event having occurred first and the notes being Converted or Written-off. In that event:

        In the event of the occurrence of any event of default, no remedy against Westpac (including, without limitation, any right to sue for a sum of damages which has the same economic effect as an acceleration of Westpac's payment obligations) shall be available to the trustee or any holder of any notes for the recovery of amounts owing in respect of the notes or in respect of any breach by Westpac

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of any obligation, condition or provision binding on it under the terms of the notes other than as described in this prospectus supplement, the applicable term sheet or the accompanying prospectus.

        A holder of notes will have no right to accelerate payment or exercise any other remedies (including any right to sue for damages) as a consequence of any default other than as specifically described in this prospectus supplement and the accompanying prospectus. In the event of a Winding - Up in Australia (but not in any other jurisdiction), the notes will become immediately due and payable, unless they have been Converted or Written-off. This will be the only circumstance in which the payment of principal on notes may be accelerated.

        If any note becomes due and payable as a result of an event of default, Westpac shall repay such amount as is equal to the Outstanding Principal Amount (or such other amount specified in or determined in accordance with this prospectus supplement or the applicable term sheet) together with all accrued but unpaid interest, if any.

        Under the Australian Banking Act, for the purpose of protecting depositors and maintaining the stability of the Australian financial system, APRA has administrative power, among other things, to issue a direction to us regarding the conduct of our business, including prohibiting making payments with respect to our debt obligations (including the notes), and, if we become unable to meet our obligations or suspend payment (and in certain other limited circumstances), to appoint an "ADI statutory manager" to take control of our business.

Governing Law

        The subordinated indenture and the notes will be governed by, and construed in accordance with, the laws of the State of New York, without regard to conflict of law principles, except that the Non-Viability Trigger Event, Write-off, Conversion and subordination provisions will be governed by, and construed in accordance with, the laws of the State of New South Wales, Commonwealth of Australia.

Notes Issued as Global Notes

        The notes are expected to be issued in the form of global notes. See "Description of the Subordinated Debt Securities—Global Securities" in the accompanying prospectus.

Book-Entry System

        All interests in the notes will be subject to the operations and procedures of DTC, Euroclear Bank SA/NV, which we refer to as Euroclear, and Clearstream Banking, société anonyme, which we refer to as Clearstream. The descriptions of the operations and procedures of DTC, Euroclear and Clearstream set forth below are provided solely as a matter of convenience. These operations and procedures are solely within the control of the respective settlement systems and are subject to change by them from time to time. We obtained the information in this section and elsewhere in this prospectus supplement concerning DTC, Euroclear and Clearstream and their respective book-entry systems from sources that we believe are reliable, but we take no responsibility for the accuracy of any of this information.

        The Depository Trust Company, New York, NY, will act as securities depository for the notes. The notes will be issued as fully-registered securities registered in the name of Cede & Co. (DTC's partnership nominee) or such other name as may be requested by an authorized representative of DTC. One fully-registered note certificate will be issued for each issue of the notes, each in the aggregate principal amount of such issue, and will be deposited with DTC. If, however, the aggregate principal amount of any issue exceeds $500 million, one certificate will be issued with respect to each $500 million of principal amount and an additional certificate will be issued with respect to any remaining principal amount of such issue.

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        DTC, the world's largest securities depository, is a limited-purpose trust company organized under the New York Banking Law, a "banking organization" within the meaning of the New York Banking Law, a member of the Federal Reserve System, a "clearing corporation" within the meaning of the New York Uniform Commercial Code, and a "clearing agency" registered pursuant to the provisions of Section 17A of the Securities Exchange Act of 1934, as amended, which we refer to as the Exchange Act. DTC holds and provides asset servicing for over 3.5 million issues of U.S. and non-U.S. equity issues, corporate and municipal debt issues, and money market instruments from over 100 countries that DTC's participants, which we refer to as Direct Participants, deposit with DTC. DTC also facilitates the post-trade settlement among Direct Participants of sales and other securities transactions in deposited securities through electronic computerized book-entry transfers and pledges between Direct Participants' accounts. This eliminates the need for physical movement of securities certificates. Direct Participants include both U.S. and non-U.S. securities brokers and dealers, banks, trust companies, clearing corporations, and certain other organizations. DTC is a wholly-owned subsidiary of The Depository Trust & Clearing Corporation, which we refer to as DTCC. DTCC is the holding company for DTC, National Securities Clearing Corporation and Fixed Income Clearing Corporation, all of which are registered clearing agencies. DTCC is owned by the users of its regulated subsidiaries. Access to the DTC system is also available to others such as both U.S. and non-U.S. securities brokers and dealers, banks, trust companies, and clearing corporations that clear through or maintain a custodial relationship with a Direct Participant, either directly or indirectly, which we refer to as Indirect Participants. The DTC Rules applicable to its Participants are on file with the Securities and Exchange Commission. More information about DTC can be found at www.dtcc.com and www.dtc.org .

        Purchases of notes under the DTC system must be made by or through Direct Participants, which will receive a credit for the notes on DTC's records. The ownership interest of each actual purchaser of each note, which we refer to as a Beneficial Owner, is in turn to be recorded on the Direct and Indirect Participants' records. Beneficial Owners will not receive written confirmation from DTC of their purchase. Beneficial Owners are, however, expected to receive written confirmations providing details of the transaction, as well as periodic statements of their holdings, from the Direct or Indirect Participant through which the Beneficial Owner entered into the transaction. Transfers of ownership interests in the notes are to be accomplished by entries made on the books of Direct and Indirect Participants acting on behalf of Beneficial Owners. Beneficial Owners will not receive certificates representing their ownership interests in notes, except in the event that use of the book-entry system for the notes is discontinued.

        To facilitate subsequent transfers, all notes deposited by Direct Participants with DTC are registered in the name of DTC's partnership nominee, Cede & Co., or such other name as may be requested by an authorized representative of DTC. The deposit of notes with DTC and their registration in the name of Cede & Co. or such other DTC nominee do not effect any change in beneficial ownership. DTC has no knowledge of the actual Beneficial Owners of the notes; DTC's records reflect only the identity of the Direct Participants to whose accounts the notes are credited, which may or may not be the Beneficial Owners. The Direct and Indirect Participants will remain responsible for keeping account of their holdings on behalf of their customers.

        Conveyance of notices and other communications by DTC to Direct Participants, by Direct Participants to Indirect Participants, and by Direct Participants and Indirect Participants to Beneficial Owners will be governed by arrangements among them, subject to any statutory or regulatory requirements as may be in effect from time to time.

        Redemption notices shall be sent to DTC. If less than all of the notes within an issue are being redeemed, DTC's practice is to determine by lot the amount of the interest of each Direct Participant in such issue to be redeemed.

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        Neither DTC nor Cede & Co. (nor any other DTC nominee) will consent or vote with respect to the notes unless authorized by a Direct Participant in accordance with DTC's MMI Procedures. Under its usual procedures, DTC mails an Omnibus Proxy to us as soon as possible after the record date. The Omnibus Proxy assigns Cede & Co.'s consenting or voting rights to those Direct Participants to whose accounts the notes are credited on the record date (identified in a listing attached to the Omnibus Proxy).

        Redemption proceeds, distributions, and interest payments on the notes will be made to Cede & Co., or such other nominee as may be requested by an authorized representative of DTC. DTC's practice is to credit Direct Participants' accounts upon DTC's receipt of funds and corresponding detail information from us or our agent on payable date in accordance with their respective holdings shown on DTC's records. Payments by Participants to Beneficial Owners will be governed by standing instructions and customary practices, as is the case with securities held for the accounts of customers in bearer form or registered in "street name", and will be the responsibility of such Participant and not of DTC, our agent or us, subject to any statutory or regulatory requirements as may be in effect from time to time. Payment of redemption proceeds, distributions, and interest payments to Cede & Co. (or such other nominee as may be requested by an authorized representative of DTC) is the responsibility of Westpac or our agent, disbursement of such payments to Direct Participants will be the responsibility of DTC, and disbursement of such payments to the Beneficial Owners will be the responsibility of Direct and Indirect Participants.

        DTC may discontinue providing its services as depository with respect to the notes at any time by giving reasonable notice to us or our agent. Under such circumstances, in the event that a successor depository is not obtained, note certificates are required to be printed and delivered.

        We may decide to discontinue use of the system of book-entry-only transfers through DTC (or a successor securities depository). In that event, note certificates will be printed and delivered to DTC.

        Euroclear.     Euroclear was created in 1968 to hold securities for participants of Euroclear, which we refer to as Euroclear Participants, and to clear and settle transactions between Euroclear Participants through simultaneous electronic book-entry delivery against payment, thereby eliminating the need for physical movement of certificates and any risk from lack of simultaneous transfers of securities and cash. Euroclear includes various other services, including securities lending and borrowing and interfaces with domestic markets in several markets in several countries. Euroclear is operated by Euroclear Bank SA/NV, which we refer to as the Euroclear Operator, under contract with Euroclear Clearance Systems S.C., a Belgian cooperative corporation, which we refer to as the Cooperative. All operations are conducted by the Euroclear Operator, and all Euroclear securities clearance accounts and Euroclear cash accounts are accounts with the Euroclear Operator, not the Cooperative. The Cooperative establishes policy for Euroclear on behalf of Euroclear Participants. Euroclear Participants include banks (including central banks), securities brokers and dealers and other professional financial intermediaries and may include the underwriters. Indirect access to Euroclear is also available to other firms that clear through or maintain a custodial relationship with a Euroclear Participant, either directly or indirectly.

        The Euroclear Operator is regulated and examined by the Belgian Banking Commission. Distributions of principal and interest with respect to notes held through Euroclear will be credited to the cash accounts of Euroclear participants in accordance with the relevant system's rules and procedures, to the extent received by such system's depositary.

        Clearstream.     Clearstream is incorporated under the laws of Luxembourg as a professional depositary. Clearstream holds securities for its participating organizations, which we refer to as Clearstream Participants, and facilitates the clearance and settlement of securities transactions between Clearstream Participants through electronic book-entry changes in accounts of Clearstream Participants, thereby eliminating the need for physical movement of certificates. Clearstream provides Clearstream

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Participants with, among other things, services for safekeeping, administration, clearance and establishment of internationally traded securities and securities lending and borrowing. Clearstream interfaces with domestic markets in several countries. As a professional depositary, Clearstream is subject to regulation by the Luxembourg Monetary Institute. Clearstream Participants are recognized financial institutions around the world, including underwriters, securities brokers and dealers, banks, trust companies, clearing corporations and certain other organizations, and may include the underwriters. Indirect access to Clearstream is also available to others, such as banks, brokers, dealers and trust companies that clear through or maintain a custodial relationship with a Clearstream Participant either directly or indirectly.

        Distributions with respect to notes held beneficially through Clearstream will be credited to cash accounts of Clearstream Participants in accordance with its rules and procedures to the extent received by the U.S. depositary for Clearstream.

        Links have been established among DTC, Clearstream and Euroclear to facilitate the initial issuance of the notes and cross-market transfers of the notes associated with secondary market trading. DTC will be linked indirectly to Clearstream and Euroclear through the DTC accounts of their respective U.S. depositaries.

        Global Clearance and Settlement Procedures.     Initial settlement for the notes will be made in immediately available funds. Transfers between participants in DTC will be effected in accordance with DTC's procedures, and will be settled in same-day funds. Transfers between participants in Euroclear or Clearstream will be effected in the ordinary way in accordance with their respective rules and operating procedures.

        Cross-market transfers between participants in DTC, on the one hand, and Euroclear or Clearstream participants, on the other hand, will be effected through DTC in accordance with DTC's rules on behalf of Euroclear or Clearstream, as the case may be, by its respective depositary. However, those cross-market transactions will require delivery of instructions to Euroclear or Clearstream, as the case may be, by the counterparty in that system in accordance with the rules and procedures and within the established deadlines (Brussels time) of that system. Euroclear or Clearstream, as the case may be, will, if the transaction meets its settlement requirements, deliver instructions to its respective depositary to take action to effect final settlement on its behalf by delivering or receiving interests in the relevant notes in DTC, and making or receiving payment in accordance with normal procedures for same-day funds settlement applicable to DTC. Euroclear Participants and Clearstream Participants may not deliver instructions directly to the depositaries for Euroclear or Clearstream.

        Because of time zone differences, the securities account of a Euroclear or Clearstream participant purchasing an interest in a note from a participant in DTC will be credited, and any such crediting will be reported to the relevant Euroclear or Clearstream participant, during the securities settlement processing day (which must be a business day for Euroclear and Clearstream) immediately following the settlement date of DTC. DTC has advised us that cash received in Euroclear or Clearstream as a result of sales of interests in a note by or through a Euroclear or Clearstream participant to a participant in DTC will be received with value on the settlement date of DTC but will be available in the relevant Euroclear or Clearstream cash account only as of the business day for Euroclear or Clearstream following DTC's settlement date.

        Although we understand that DTC, Euroclear and Clearstream have agreed to the foregoing procedures to facilitate transfers of interests in the notes among participants in DTC, Euroclear and Clearstream, they are under no obligation to perform or to continue to perform those procedures, and those procedures may be discontinued at any time. Neither we nor the trustee will have any responsibility for the performance by DTC, Euroclear or Clearstream or their respective participants or indirect participants of their respective obligations under the rules and procedures governing their operations.

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TAXATION

        For a general discussion of the material U.S. federal income tax and Australian tax considerations relating to the purchase, ownership, and disposition of the notes by certain holders, please refer to "Taxation" in the accompanying prospectus.

        The following summary replaces the section "Taxation—United States Taxation—FATCA Withholding" in the accompanying prospectus:

"FATCA Withholding

        It is possible that, in order to comply with FATCA, we (or, if the Subordinated Debt Securities or the Ordinary Shares are held through another financial institution, such other financial institution) may be required (pursuant to an agreement entered into with the United States or under applicable law (including pursuant to the terms of any applicable intergovernmental agreement entered into between the United States and any other jurisdiction)) (i) to request certain information from holders or beneficial owners of the Subordinated Debt Securities or the Ordinary Shares, which information may be provided to the IRS, and (ii) to withhold U.S. tax on any portion of any payment with respect to the Subordinated Debt Securities, with respect to the issuance of any Ordinary Shares upon any Conversion or with respect to the Ordinary Shares treated as a foreign passthru payment made two years or more after the date on which the final regulations that define "foreign passthru payments" are published if such information is not provided or if payments are made to certain foreign financial institutions that have not entered into a similar agreement with the United States (and are not otherwise required to comply with the FATCA regime under applicable law (including pursuant to the terms of any applicable intergovernmental agreement entered into between the United States and any other jurisdiction)).

        If we or any other person are required to withhold or deduct amounts arising under or in connection with FATCA from any payments made with respect to the Subordinated Debt Securities, with respect to the issuance of any Ordinary Shares upon any Conversion or with respect to the Ordinary Shares, holders and beneficial owners of the Subordinated Debt Securities, and the holders and beneficial owners of the Ordinary Shares issued upon any Conversion, will not be entitled to receive any gross up or other additional amounts on account of any such withholding or deduction. FATCA is complex and its application to the Subordinated Debt Securities, any Conversion and the Ordinary Shares remains uncertain. Each holder and beneficial owner should consult its own tax advisor regarding the application of FATCA to the Subordinated Debt Securities, any Conversion and the Ordinary Shares."

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UNDERWRITING (CONFLICTS OF INTEREST)

        BofA Securities, Inc., Citigroup Global Markets Inc., HSBC Securities (USA) Inc., J.P. Morgan Securities LLC and Westpac Banking Corporation are acting as the representatives of the underwriters named below. Subject to the terms and conditions stated in the underwriting agreement dated the date of this prospectus supplement, each underwriter named below has agreed to severally purchase, and we have agreed to sell to that underwriter, the principal amount of notes set forth opposite the underwriter's name.

Underwriter
  Principal Amount
of Notes
 

BofA Securities, Inc. 

  US$ 250,000,000  

Citigroup Global Markets Inc. 

    250,000,000  

HSBC Securities (USA) Inc. 

    250,000,000  

J.P. Morgan Securities LLC

    250,000,000  

Westpac Banking Corporation

    175,000,000  

RBC Capital Markets, LLC

    37,500,000  

TD Securities (USA) LLC

    37,500,000  

Total

  US$ 1,250,000,000  

        The underwriting agreement provides that the obligations of the underwriters to purchase the notes offered hereby are subject to approval of legal matters by counsel and to other conditions. The underwriters are obligated to purchase all the notes if they purchase any of the notes.

        Westpac Banking Corporation, as underwriter, may reduce or eliminate its obligation to purchase the notes that it has agreed to purchase under the underwriting agreement. In that event, we shall have the right to require each underwriter other than Westpac Banking Corporation to purchase the principal amount of the notes that such underwriter agreed to purchase under the underwriting agreement, as shown in the table above, plus such underwriter's pro rata share (based on the principal amount of notes that such underwriter agreed to purchase under the underwriting agreement) of the notes that Westpac Banking Corporation, as underwriter, is no longer obligated to purchase.

        The underwriters have advised us that they propose to offer some of the notes directly to the public at the public offering price, set forth on the cover page of this prospectus supplement and some of the notes to dealers at the public offering price, less a concession not to exceed 0.250% of the principal amount of the notes. The underwriters may allow, and dealers may reallow, a concession not to exceed 0.150% of the principal amount of the notes. After the initial offering of the notes to the public, the representatives may change the public offering price and other selling terms. The offering of the notes by the underwriters is subject to receipt and acceptance and subject to the underwriters' right to reject any order in whole or in part. In connection with this offering of the notes, we will pay an underwriting discount to the underwriters of 0.400% (expressed as a percentage) of the principal amount of the notes.

        In connection with the offering of the notes, the representatives may engage in transactions that stabilize, maintain or otherwise affect the prices of the notes. Specifically, the underwriters may overallot in connection with the offering of the notes, creating a syndicate short position. In addition, the underwriters may bid for, and purchase, notes in the open market to cover syndicate short positions or to stabilize the prices of the notes. Finally, the underwriting syndicate may reclaim selling concessions allowed for distributing the notes in the offering of the notes, if the syndicate repurchases previously distributed notes in syndicate covering transactions, stabilization transactions or otherwise. Any of these activities may stabilize or maintain the market prices of the notes above independent market levels. The underwriters are not required to engage in any of these activities, and may end any of them at any time without notice.

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        The underwriters also may impose a penalty bid. This occurs when a particular underwriter repays to the underwriters a portion of the underwriting discount received by it because the representatives have repurchased notes sold by or for the account of such underwriter in stabilizing or short covering transactions.

        We estimate that our total expenses, excluding the underwriting discount, for this offering will be US$354,000. The underwriters have agreed to reimburse us for certain of our expenses relating to this offering.

        We have agreed to indemnify the several underwriters against certain liabilities, including liabilities under the Securities Act, or to contribute to payments the underwriters may be required to make because of any of those liabilities.

        The notes are a new issue of securities with no established trading market. The notes will not be listed on any securities exchange or on any automated dealer quotation system. The underwriters may make a market in the notes after completion of the offering, but will not be obligated to do so and may discontinue any market-making activities at any time without notice. No assurance can be given as to the liquidity of the trading market for the notes or that an active public market for the notes will develop. If an active public market for the notes does not develop, the market price and liquidity of the notes may be adversely affected.

        Since trades in the secondary market generally settle in two business days, purchasers who wish to trade notes on the date of pricing or the next three succeeding business days will be required, by virtue of the fact that the notes initially settle in T+6, to specify alternative settlement arrangements to prevent a failed settlement.

Conflicts of Interest

        The underwriters and their respective affiliates are full service financial institutions engaged in various activities, which may include securities trading, commercial and investment banking, financial advisory, investment management, investment research, principal investment, hedging, financing and brokerage activities. The underwriters and their affiliates have, directly and indirectly, provided various investment and commercial banking services to us and our affiliates for which they received customary fees and commissions. The underwriters and their affiliates may, from time to time, engage in other transactions with and perform services for us in the ordinary course of their business. In the ordinary course of their various business activities, the underwriters and their respective affiliates may make or hold a broad array of investments and actively trade debt and equity securities (or related derivative securities) and financial instruments (including bank loans) for their own account and for the accounts of their customers, and such investment and securities activities may involve securities and/or instruments of Westpac. If any of the underwriters or their affiliates has a lending relationship with us, certain of those underwriters and affiliates routinely hedge and certain other of those underwriters or affiliates may hedge their credit exposure to us consistent with their customary risk management policies. Typically, these underwriters and their affiliates would hedge such exposure by entering into transactions which consist of either the purchase of credit default swaps or the creation of short positions in our securities, including potentially the notes offered hereby. Any such credit default swaps or short positions could adversely affect future trading prices of the notes offered hereby. The underwriters and their respective affiliates may also make investment recommendations and/or publish or express independent research views in respect of such securities or instruments and may at any time hold, or recommend to clients that they acquire, long and/or short positions in such securities and instruments.

        Westpac Banking Corporation is not a U.S. registered broker-dealer and, therefore, to the extent that it intends to effect any sales of the notes in the United States, it will do so through Westpac Capital Markets LLC, a U.S. registered broker dealer, which we refer to as WCM. WCM is an affiliate

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of Westpac Banking Corporation. This offering will be conducted in compliance with Rule 5121 of the Financial Industry Regulatory Authority, Inc., which we refer to as FINRA, regarding a FINRA member firm's distribution of the securities of an affiliate and related conflicts of interest. In accordance with FINRA Rule 5121, WCM may not make sales in this offering to any discretionary accounts without the prior written approval of the customer.

        This prospectus supplement, together with the accompanying prospectus and any prospectus describing the terms of the specific series of securities being offered and sold, may be used by Westpac or its U.S. broker-dealer subsidiary, Westpac Capital Markets LLC, which we refer to as WCM in connection with offers and sales of such securities in market-making transactions at negotiated prices related to prevailing market prices at the time of sale, or at other prices. Westpac or WCM may act as principal or agent in these transactions. Neither Westpac nor WCM is obligated to make a market in any of the securities referenced on the cover of this prospectus supplement and either Westpac or WCM may discontinue any market-making at any time without notice, at its sole discretion.

Offering Restrictions

Australia

        Neither this prospectus supplement nor the accompanying prospectus or any disclosure document (as defined in the Australian Corporations Act) in relation to the notes has been, or will be, lodged with the Australian Securities and Investments Commission, which we refer to as ASIC. Each underwriter has represented and agreed that, in connection with the distribution of the notes, it:

        unless:

European Economic Area

        Each underwriter has represented and agreed that it has not offered, sold or otherwise made available and will not offer, sell or otherwise make available any notes to any retail investor in the EEA.

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        For the purposes of this provision:

France

        Each underwriter has represented and agreed that:

        In compliance with Article 211-4 of the General regulation of the Autorité des marchés financiers (French stock exchange authority) investors are informed that the notes have not been subject to a prospectus submitted for approval to the Autorité des marchés financiers .

        The persons or entities referred to in Article L.411-2.II.4 of the French Code monétaire et financier may purchase notes solely for their own account under the conditions referred to in Articles D.411-1, D.411-2, D.734-1, D.744-1 and D.754-1 and D.764-1 of the French Code monétaire et financier.

        The notes thus acquired cannot be distributed directly or indirectly to the public otherwise than in accordance with the conditions referred to in Articles L.411-1, L.412-1 and L.621-8 to L.621-8-3 of the French Code monétaire et financier .

The Netherlands

        Each underwriter has represented and agreed in respect of the notes that it has not offered and that it will not offer, directly or indirectly, any notes in The Netherlands and that such an offer may not be announced (whether electronically or otherwise), unless the notes are offered exclusively to persons who qualify as professional market parties within the meaning of article 1:1 of the Financial Markets Supervision Act ( Wet op het financieel toezicht) .

Hong Kong

        Each underwriter has represented and agreed that it has not offered or sold and will not sell or offer to sell in Hong Kong, by means of any document, any note other than: (i) to "professional investors" as defined in the Securities and Futures Ordinance (Cap. 571) of Hong Kong (the "SFO") and any rules made thereunder, or (ii) in other circumstances which do not result in the document

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being a "prospectus" as defined in the Companies (Winding Up and Miscellaneous Provisions) Ordinance (Cap. 32) of Hong Kong (the "C(WUMP)O") or which do not constitute an offer to the public within the meaning of the C(WUMP)O; and that it has not issued or had in its possession for the purposes of issue, and will not issue or have in its possession for the purpose of issue, where in Hong Kong or elsewhere, any advertisement, invitation or document relating to the notes, which is directed at, or the contents of which are likely to be accessed or read by, the public in Hong Kong (except if permitted to do so under the securities laws of Hong Kong) other than with respect to notes which are or are intended to be disposed of only to persons outside Hong Kong or only to "professional investors" as defined in the SFO and any rules made thereunder.

Japan

        Each underwriter has represented and agreed that the notes have not been and will not be registered under the Financial Instruments and Exchange Law of Japan (Law No. 25 of 1948, as amended) (the "Financial Instruments and Exchange Law"), and has represented and agreed that it has not offered or sold and will not offer or sell the notes, directly or indirectly, in Japan or to, or for the account or benefit of, any Japanese Person or to, or for the account or benefit of, others for re-offering or resale, directly or indirectly, in Japan or to, or for the account or benefit of, any Japanese Person, except pursuant to an exemption from the registration requirements of, and otherwise in compliance with, the Financial Instruments and Exchange Law and any other applicable laws, regulations and ministerial guidelines of Japan. For the purpose of this paragraph "Japanese Person" means any person resident in Japan, including any corporation or other entity organized under the laws of Japan.

Singapore

        This prospectus supplement has not been registered as a prospectus under the Securities and Futures Act, Chapter 289 of Singapore, which we refer to as the SFA, by the Monetary Authority of Singapore, and the offer of the notes in Singapore is made primarily pursuant to the exemptions under Sections 274 and 275 of the SFA. Accordingly, this prospectus supplement and any other document or material in connection with the offer or sale, or invitation for subscription or purchase, of the notes may not be circulated or distributed, nor may the notes be offered or sold, or be made the subject of an invitation for subscription or purchase, whether directly or indirectly, to persons in Singapore other than (a) to an institutional investor as defined in the SFA, which we refer to as an Institutional Investor, pursuant to Section 274 of the SFA, (b) to an accredited investor as defined in the SFA, which we refer to as an Accredited Investor, or other relevant person as defined in Section 275(2) of the SFA, which we refer to as a Relevant Person, and pursuant to Section 275(1) of the SFA, or to any person pursuant to an offer referred to in Section 275(1A) of the SFA, and in accordance with the conditions specified in Section 275 of the SFA, or (c) otherwise pursuant to, and in accordance with, the conditions of any other applicable exemption or provision of the SFA.

        It is a condition of the offer that where the notes are subscribed for or acquired pursuant to an offer made in reliance on Section 275 of the SFA by a Relevant Person which is:

securities or securities-based derivatives contracts (each as defined in Section 2(1) of the SFA) of that corporation or the beneficiaries' rights and interest (howsoever defined) in that trust shall not be

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transferred within six months after that corporation or that trust has acquired the notes pursuant to an offer made in Section 275 of the SFA except:

        Notification under Section 309B(1) of the SFA—Unless otherwise stated in this prospectus supplement in respect of the notes, all notes shall be prescribed capital markets products (as defined in the Securities and Futures (Capital Markets Products) Regulations 2018) and Excluded Investment Products (as defined in MAS Notice SFA 04-M12: Notice on the Sale of Investment Products and MAS Notice FAA-N16: Notice on Recommendations on Investment Products).

The United Kingdom

        Each underwriter has represented and agreed that:

Canada

        The notes may be sold only to purchasers purchasing, or deemed to be purchasing, as principal that are accredited investors, as defined in National Instrument 45-106 Prospectus Exemptions or subsection 73.3(1) of the Securities Act (Ontario), and are permitted clients, as defined in National Instrument 31-103 Registration Requirements, Exemptions and Ongoing Registrant Obligations . Any resale of the notes must be made in accordance with an exemption from, or in a transaction not subject to, the prospectus requirements of applicable securities laws.

        Securities legislation in certain provinces or territories of Canada may provide a purchaser with remedies for rescission or damages if this prospectus supplement and the accompanying prospectus (including any amendment hereto and thereto) contains a misrepresentation, provided that the remedies for rescission or damages are exercised by the purchaser within the time limit prescribed by the securities legislation of the purchaser's province or territory. The purchaser should refer to any applicable provisions of the securities legislation of the purchaser's province or territory for particulars of these rights or consult with a legal advisor.

        Pursuant to section 3A.3 of National Instrument 33-105 Underwriting Conflicts ("NI 33-105"), the underwriters are not required to comply with the disclosure requirements of NI 33-105 regarding underwriter conflicts of interest in connection with this offering.

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WHERE YOU CAN FIND MORE INFORMATION

        We file annual and other reports and other information with the SEC under the Exchange Act. The SEC maintains an Internet site, http://www.sec.gov , which contains reports, proxy and information statements and other information regarding issuers that are subject to the SEC's reporting requirements.

        You may request a copy of any filings (excluding exhibits) referred to above and in "Incorporation of Information We File with the SEC" at no cost by contacting us at the following address: Westpac Banking Corporation, New York Branch, 575 Fifth Avenue, 39th Floor, New York, New York 10017-2422, Attention: Branch Manager. Telephone requests may be directed to such person at (212) 551-1905. Our website is available at www.westpac.com.au. Information contained in or accessible through the websites mentioned in this prospectus supplement does not form part of this prospectus supplement or the accompanying prospectus and all references in this prospectus supplement to websites are inactive textual references and are for information only.

        This prospectus supplement is a supplement to the accompanying prospectus contained in a registration statement that we have filed with the SEC relating to the notes to be offered. This prospectus supplement does not contain all of the information we have included in the registration statement, including the accompanying prospectus, and the accompanying exhibits and schedules in accordance with the rules and regulations of the SEC, and we refer you to the omitted information. The statements this prospectus supplement makes pertaining to the content of any contract, agreement or other document that is an exhibit to the registration statement necessarily are summaries of their material provisions and do not describe all exceptions and qualifications contained in those contracts, agreements or documents. You should read those contracts, agreements or documents for information that may be important to you. The registration statement, exhibits and schedules are available through the SEC's Internet site.


INCORPORATION OF INFORMATION WE FILE WITH THE SEC

        The SEC allows us to incorporate by reference the information we file with them, which means:

        We incorporate by reference the documents listed below which were filed with the SEC under the Exchange Act:

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        We also incorporate by reference each of the following documents that we will file with the SEC after the date of this prospectus supplement until this offering is completed:

        You should assume that the information appearing in this prospectus supplement is accurate only as of the date of this prospectus supplement and that information appearing in documents incorporated by reference herein is accurate only as of the respective dates of those documents. Our business, financial condition and results of operations may have changed since that date.

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CURRENCY OF PRESENTATION AND EXCHANGE RATES

        We publish our consolidated financial statements in Australian dollars.

        The following table sets forth, for Westpac's financial years indicated, the high, low, average and period-end noon buying rates in New York City for cable transfers of Australian dollars as certified for customs purposes by the Federal Reserve Bank of New York, expressed in U.S. dollars per A$1.00. Westpac's financial year ends on September 30 of each year.

Financial Year
  At Period End   Average Rate(1)   High   Low  

2013

    0.9342     0.9885     1.0579     0.8901  

2014

    0.8737     0.9155     0.9705     0.8715  

2015

    0.7020     0.7781     0.8904     0.6917  

2016

    0.7667     0.7385     0.7817     0.6855  

2017

    0.7840     0.7624     0.8071     0.7174  

2018

    0.7238     0.7583     0.8105     0.7107  

2019(2)

    0.6968     0.7088     0.7360     0.6860  

(1)
The average of the noon buying rates on the last day of each month or portion thereof during the period.

(2)
Through July 5, 2019.

        Regulations in Australia restrict or prohibit payments, transactions and dealings with assets having a proscribed connection with certain countries or named individuals or entities subject to international sanctions or associated with terrorism.


VALIDITY OF SECURITIES

        King & Wood Mallesons, our Australian counsel, will provide an opinion to the effect that we have duly authorized the issuance of the notes and will pass upon the validity of the Ordinary Shares. Additionally, the validity of the notes under New York law will be passed upon for us by our New York counsel, Debevoise & Plimpton LLP, New York, New York. The validity of the notes and the Ordinary Shares under New York law will be passed upon for the Underwriters by their United States counsel, Sidley Austin LLP, New York, New York.

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EXPERTS

        The financial statements and management's assessment of the effectiveness of internal control over financial reporting (which is included in Management's Report on Internal Control Over Financial Reporting), incorporated in this prospectus supplement and the accompanying prospectus by reference to Annual Report on Form 20-F for the financial year ended September 30, 2018 , have been so incorporated in reliance on the report of PricewaterhouseCoopers, an independent registered public accounting firm, given on the authority of said firm as experts in auditing and accounting. PricewaterhouseCoopers is a member of the Institute of Chartered Accountants in Australia.

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EXPENSES

        The following table sets forth the aggregate expenses, other than the underwriting discount, to be paid by us in connection with this offering. All amounts shown are estimates, except for the SEC registration fee.

SEC Registration Fee

  US$ 151,500  

Printing Expenses

    15,000  

Trustee's Fees and Expenses

    7,500  

Accountants' Fees and Expenses

    30,000  

Legal Fees and Expenses

    150,000  

Total

  US$ 354,000  

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PROSPECTUS

LOGO

Westpac Banking Corporation

ABN 33 007 457 141

Subordinated Debt Securities

Ordinary Shares

        By this prospectus, we may offer from time to time the securities described in this prospectus.

        Specific terms of any securities to be offered will be provided in a supplement to this prospectus. You should read this prospectus and any supplement carefully before you invest. A supplement may also add to, update, supplement or clarify information contained in this prospectus.

        Unless stated otherwise in a prospectus supplement or term sheet, none of the Subordinated Debt Securities will be listed on any securities exchange. The Ordinary Shares are currently listed on the Australian Securities Exchange and the NZX, and American Depository Shares representing Ordinary Shares are currently listed on the New York Stock Exchange.

        The Subordinated Debt Securities are not protected accounts or deposit liabilities for the purpose of the Banking Act 1959 of Australia, which we refer to as the Australian Banking Act, or the financial claims scheme established under the Australian Banking Act, which we refer to as the FCS, are not subject to the depositor protection provisions of the Australian Banking Act, and are not insured or guaranteed by (1) the Commonwealth of Australia or any governmental agency of Australia, (2) the United States Federal Deposit Insurance Corporation or any other governmental agency or instrumentality of the United States, (3) any compensation scheme of the Commonwealth of Australia or the United States, or (4) any other jurisdiction or party. In addition, we or our U.S. broker-dealer subsidiary, Westpac Capital Markets LLC, may use this prospectus, together with the relevant prospectus supplement and prospectus describing the terms of the specific series of securities being offered and sold, in market-making transactions in the securities described therein after they are initially offered and sold.

        We may offer and sell these securities to or through one or more agents, underwriters, dealers or other third parties or directly to one or more purchasers on a continuous or delayed basis.

        Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

The date of this prospectus is November 9, 2018.


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TABLE OF CONTENTS

 
  Page

ABOUT THIS PROSPECTUS

 
1

FORWARD-LOOKING STATEMENTS

 
1

WESTPAC BANKING CORPORATION

 
4

USE OF PROCEEDS

 
6

DESCRIPTION OF THE SUBORDINATED DEBT SECURITIES

 
7

DESCRIPTION OF ORDINARY SHARES

 
47

TAXATION

 
49

PLAN OF DISTRIBUTION

 
59

WHERE YOU CAN FIND MORE INFORMATION

 
61

INCORPORATION OF INFORMATION WE FILE WITH THE SEC

 
61

ENFORCEABILITY OF FOREIGN JUDGMENTS IN AUSTRALIA

 
62

CURRENCY OF PRESENTATION AND EXCHANGE RATES

 
62

VALIDITY OF SECURITIES

 
63

EXPERTS

 
63

LIMITATION ON INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM'S LIABILITY

 
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ABOUT THIS PROSPECTUS

        This prospectus is part of a registration statement that we filed with the Securities and Exchange Commission, which we refer to as the SEC, utilizing a "shelf" registration process. Under this shelf process, we are registering each class of securities described in this prospectus, and we may sell the securities described in this prospectus in one or more offerings. This prospectus provides you with a general description of the securities we may offer. Each time we sell securities, we will provide a prospectus supplement or term sheet that will contain specific information about the terms of that offering. The prospectus supplement or term sheet may also add to, update, supplement, change or clarify information contained in this prospectus. The rules of the SEC allow us to incorporate by reference information into this prospectus. The information incorporated by reference is considered to be a part of this prospectus, and information that we file later with the SEC will automatically update and supersede this information. See "Incorporation of Information We File with the SEC". If the information contained or incorporated by reference in this prospectus differs from any prospectus supplement, you should rely on the prospectus supplement. You should read both this prospectus and any prospectus supplement or term sheet together with additional information described under the heading "Where You Can Find More Information".

        No person has been authorized to give any information or to make any representation other than those contained or incorporated by reference in this prospectus and, if given or made, such information or representation must not be relied upon as having been authorized by Westpac Banking Corporation, or any underwriter, agent or dealer. Neither the delivery of this prospectus nor any sale made pursuant to this prospectus shall under any circumstances create any implication that there has been no change in the affairs of Westpac Banking Corporation since the date of this prospectus or that the information contained or incorporated by reference in this prospectus is correct as of any time subsequent to the date of such information. This prospectus does not constitute an offer to sell or a solicitation of an offer to buy any securities by anyone in any jurisdiction in which such offer or solicitation is not authorized or in which the person making such offer or solicitation is not qualified to do so or to any person to whom it is unlawful to make such offer or solicitation.

        Unless otherwise indicated, or the context otherwise requires, references in this prospectus to the "Group", "we", "us" and "our" or similar terms are to Westpac Banking Corporation and its controlled entities (within the meaning of Section 50AA of the Commonwealth of Australia's Corporations Act 2001, which we refer to as the Australian Corporations Act), and references to "Westpac" are to Westpac Banking Corporation ABN 33 007 457 141.

        All references in this prospectus, any supplement hereto or in any document incorporated or deemed to be incorporated by reference in this prospectus to websites are, unless we expressly state otherwise, intended to be inactive textual references for information only and any information contained in or accessible through any such website does not form a part of this prospectus, unless we specifically state in this prospectus or in any such document that all or any portion of such information is incorporated by reference in this prospectus.


FORWARD-LOOKING STATEMENTS

        This prospectus contains or incorporates by reference statements that constitute "forward-looking" statements within the meaning of Section 27A of the Securities Act of 1933, as amended, which we refer to as the Securities Act. Forward-looking statements are statements about matters that are not historical facts. Forward-looking statements appear in a number of places in this prospectus and the information incorporated by reference herein and therein and include statements regarding our intent, belief or current expectations with respect to our business and operations, market conditions, results of operations and financial condition, including, without limitation, future loan loss provisions and financial support to certain borrowers. Words such as "will", "may", "expect", "intend", "seek",

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"would", "should", "could", "continue", "plan", "estimate", "anticipate", "believe", "probability", "risk", "aim" or other similar words are used to identify forward-looking statements. These forward-looking statements reflect our current views with respect to future events and are subject to change, certain risks, uncertainties and assumptions which are, in many instances, beyond our control, and have been made based upon management's expectations and beliefs concerning future developments and their potential effect upon us. There can be no assurance that future developments will be in accordance with our expectations or that the effect of future developments on us will be those anticipated. Actual results could differ materially from those expected, depending on the outcome of various factors, including, but not limited to, those set forth in our Annual Report on Form 20-F for the financial year ended September 30, 2018 and the other documents incorporated by reference in this prospectus. Those factors include, but are not limited to:

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        All forward-looking statements speak only as of the date made. We are under no obligation to update any forward-looking statements contained or incorporated by reference in this prospectus, whether as a result of new information, future events or otherwise.

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WESTPAC BANKING CORPORATION

        We are one of the four major banking organizations in Australia and one of the largest banking organizations in New Zealand. We provide a broad range of banking and financial services in these markets, including consumer, business and institutional banking and wealth management services.

        We have branches, affiliates and controlled entities throughout Australia, New Zealand, Asia and in the Pacific region, and maintain branches and offices in some of the key financial centers around the world.

        We were founded in 1817 and were the first bank established in Australia. In 1850 we were incorporated as the Bank of New South Wales by an Act of the New South Wales Parliament. In 1982 we changed our name to Westpac Banking Corporation following our merger with the Commercial Bank of Australia. On August 23, 2002, we were registered as a public company limited by shares under the Australian Corporations Act. Our principal office is located at 275 Kent Street, Sydney, New South Wales, 2000, Australia. Our telephone number for calls within Australia is 132 032 and our international telephone number is (+61) 2 9293 9270.

        As at September 30, 2018, we had total assets of A$880 billion. Our market capitalization as of November 2, 2018 was approximately A$91 billion.

        Our operations comprise the following key customer-facing business divisions operating under multiple brands serving over 14 million customers.

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USE OF PROCEEDS

        We intend to use the net proceeds from the sale of the securities offered by this prospectus for general corporate purposes, unless otherwise specified in the prospectus supplement or term sheet relating to a specific issue of securities. Our general corporate purposes may include financing our activities and those of our subsidiaries, including refinancing outstanding indebtedness, financing our assets and those of our subsidiaries, lengthening the average maturity of our borrowings, and financing acquisitions.

        Until we use the net proceeds from the sale of any of our securities offered by this prospectus for general corporate purposes, we may use the net proceeds to reduce our short-term indebtedness or for temporary investments.

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DESCRIPTION OF THE SUBORDINATED DEBT SECURITIES

         The following discussion describes the general terms and conditions applicable to Subordinated Debt Securities that we may offer. In addition to these general provisions, in connection with an investment in a particular series of Subordinated Debt Securities, investors should review the description of the provisions and any risk factors applicable to that series of Subordinated Debt Securities, including those set forth herein and in any applicable prospectus supplement or term sheet.

        Unless the context otherwise requires, references to "we", "us", "our" and "Westpac" in this description of the Subordinated Debt Securities refer only to Westpac Banking Corporation ABN 33 007 457 14 and not to any of its subsidiaries.

        The Subordinated Debt Securities will be issued under the Third Amended and Restated Subordinated Indenture, dated as of November 9, 2018, between us and The Bank of New York Mellon as the trustee, which we refer to as the subordinated indenture. The subordinated indenture provides that there may be more than one trustee, each with respect to one or more series of Subordinated Debt Securities.

        We have summarized below certain terms of the subordinated indenture which we believe will be most important to your decision to invest in our Subordinated Debt Securities. You should keep in mind, however, that it is the subordinated indenture, and not this summary, which defines your rights as a holder of Subordinated Debt Securities. There may be other provisions in the subordinated indenture which are also important to you. You should read the subordinated indenture for a full description of the terms of the Subordinated Debt Securities. The subordinated indenture is filed as an exhibit to the registration statement that includes this prospectus. See "Where You Can Find More Information" for information on how to obtain copies of the subordinated indenture.

        The following description of the terms of the Subordinated Debt Securities sets forth certain general terms and provisions of the Subordinated Debt Securities to which any applicable prospectus supplement or term sheet may relate. The particular terms of the Subordinated Debt Securities offered by any applicable prospectus supplement or term sheet and the extent, if any, to which such general provisions may not apply to the Subordinated Debt Securities will be described in the applicable prospectus supplement or term sheet. Accordingly, for a description of the terms of a particular issue of Subordinated Debt Securities, you should refer to both the applicable prospectus supplement or term sheet and to the following description.

        Certain defined terms used in the following description of the terms of the Subordinated Debt Securities have the meanings given to them in "—Additional Provisions Applicable to Subordinated Debt Securities—Definitions."

Ranking

        The Subordinated Debt Securities are subordinate and junior in right of payment to senior debt securities and other Senior Creditors (as defined below) in the manner and to the extent described in Section 1 "—Status of the Subordinated Debt Securities—General" below under the caption "—Additional Provisions".

        Under Section 13A(3) and Section 16 of the Australian Banking Act and Section 86 of the Reserve Bank Act 1959 of Australia, which we refer to as the Reserve Bank Act, certain debts of Westpac are preferred by law, as described below.

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        Section 13A(3) of the Australian Banking Act provides that if Westpac becomes unable to meet its obligations or suspends payment, the assets of Westpac in Australia are to be available to satisfy, in priority to all other liabilities of Westpac, including the Subordinated Debt Securities:

        A "protected account" is either (a) an account where Westpac is required to pay the accountholder, on demand or at an agreed time, the net credit balance of the account, or (b) another account or financial product prescribed by regulation.

        Under Section 16(2) of the Australian Banking Act, certain other debts of Westpac due to APRA shall in a winding-up of Westpac have, subject to Section 13A(3) of the Australian Banking Act, priority over all other unsecured debts of Westpac. Further, Section 86 of the Reserve Bank Act provides that in a winding-up of Westpac, debts due by Westpac to the RBA shall, subject to Section 13A(3) of the Australian Banking Act, have priority over all other debts of Westpac. Further, certain assets, such as the assets of Westpac in a cover pool for covered bonds issued by Westpac, are excluded from constituting assets in Australia for the purposes of Section 13A of the Australian Banking Act, and those assets are subject to the prior claims of the covered bond holders and certain other secured creditors in respect of the covered bonds.

        The Subordinated Debt Securities are not protected accounts or deposit liabilities for the purpose of the Australian Banking Act or the FCS, are not subject to the depositor protection provisions of the Australian Banking Act, and are not insured or guaranteed by (1) the Commonwealth of Australia or any governmental agency of Australia, (2) the United States Federal Deposit Insurance Corporation or any other governmental agency or instrumentality of the United States, (3) any compensation scheme of the Commonwealth of Australia or the United States or (4) any other jurisdiction or party.

General Terms of the Subordinated Debt Securities

        Westpac may issue the Subordinated Debt Securities in one or more series pursuant to an indenture that supplements the subordinated indenture, or a resolution of our board of directors or a duly authorized committee of our board of directors. (Section 3.1 of the subordinated indenture.) The aggregate principal amount of Subordinated Debt Securities that may be issued under the subordinated indenture is unlimited. You should refer to the applicable prospectus supplement or term sheet for the specific terms of each series of Subordinated Debt Securities which may, subject to such terms being

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consistent and in compliance with the Prudential Standards in effect at the time of issuance of such Subordinated Debt Securities, include the following:

        General information about US and Australian tax considerations is set out under "Taxation." Certain US federal income tax and Australian tax considerations applicable to any series of

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Subordinated Debt Securities due to its particular terms will be described in the applicable prospectus supplement or term sheet.

        Unless otherwise specified in the applicable prospectus supplement or term sheet, the Subordinated Debt Securities will be issued in denominations of $1,000 and any integral multiple of $1,000. (Section 3.2 of the subordinated indenture.) Subject to the limitations provided in the subordinated indenture and in the applicable prospectus supplement or term sheet, Subordinated Debt Securities will be issued in registered form and may be registered, transferred or exchanged at the principal corporate trust office of the trustee or at the office or agency that we will maintain for such purpose in the Borough of Manhattan, The City of New York, without the payment of any service charge, other than any tax or other governmental charge payable in connection with the registration or transfer or exchange. (Sections 3.5 and 12.2 of the subordinated indenture.)

        Westpac may issue Subordinated Debt Securities of any series in definitive form or in the form of one or more global Subordinated Debt Securities (in whole or in part) as described below under "—Global Securities". Westpac may issue Subordinated Debt Securities of a series at different times. In addition, Westpac may issue Subordinated Debt Securities within a series with terms different from the terms of other Subordinated Debt Securities of that series. (Section 3.1(c) of the subordinated indenture.)

        Subject to applicable law, Westpac or any of its affiliates may at any time purchase or repurchase Subordinated Debt Securities of any series in any manner and at any price, subject to APRA's prior written approval (which may or may not be given). Subordinated Debt Securities of any series purchased by Westpac or any of its affiliates may be held or surrendered by the purchaser of the Subordinated Debt Securities for cancellation or may be resold.

Global Securities

        Westpac may issue the Subordinated Debt Securities of a series in the form of one or more global securities (in whole or in part) that will be deposited with, or on behalf of, a depository identified in the applicable prospectus supplement or term sheet. Westpac will issue global securities in registered form and in either temporary or definitive form. Unless and until it is exchanged in whole or in part for the definitive Subordinated Debt Securities, a global security may not be transferred except as a whole by the depository for such global security to a nominee of such depository or by a nominee of such depository to such depository or another nominee of such depository or by such depository or any such nominee to a successor of such depository or a nominee of such successor. (Section 2.3 and Section 2.4 of the subordinated indenture.)

        The specific terms of the depository arrangement with respect to any Subordinated Debt Securities of a series and the rights of and limitations upon owners of beneficial interests in a global security, to the extent it differs from the provisions discussed below, will be described in the applicable prospectus supplement or term sheet. We expect that the following provisions will generally apply to depository arrangements.

        Upon the issuance of a global security, the depository for such global security or its nominee will credit, on its book entry registration and transfer system, the respective principal amounts of the definitive Subordinated Debt Securities represented by such global security to the accounts of persons that have accounts with such depository and will make adjustments to such amounts in the event of a Conversion or Write-off. Such accounts shall be designated by the dealers, underwriters or agents with respect to the Subordinated Debt Securities or by us if such Subordinated Debt Securities are offered and sold directly by us. Ownership of beneficial interests in a global security will be limited to persons that have accounts with the applicable depository, who are referred to in this prospectus as participants, or persons that may hold interests through participants. Ownership of beneficial interests in such global security will be shown on, and the transfer of that ownership will be effected only through, records

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maintained by the applicable depository or its nominee with respect to interests of participants and the records of participants with respect to interests of persons other than participants. The laws of some states require that certain purchasers of securities take physical delivery of such securities in definitive form. Such limits and such laws may impair the ability to transfer beneficial interests in a global security.

        So long as the depository for a global security, or its nominee, is the registered owner of a global security, such depository or such nominee, as the case may be, will be considered the sole owner or holder of the Subordinated Debt Securities represented by that global security for all purposes under the subordinated indenture. Except as provided below, owners of beneficial interests in a global security will not be entitled to have any of the definitive Subordinated Debt Securities of the series represented by that global security registered in their names, will not receive or be entitled to receive physical delivery of any Subordinated Debt Securities of such series in definitive form and will not be considered the owners or holders thereof under the subordinated indenture.

        Payments of principal and interest, if any, on definitive Subordinated Debt Securities represented by a global security registered in the name of a depository or its nominee will be made to the depository or its nominee, as the case may be, as the registered owner of the global security representing the Subordinated Debt Securities. None of Westpac, the trustee for the Subordinated Debt Securities, any paying agent, the registrar or any underwriter or agent for the Subordinated Debt Securities will have any responsibility or liability for any aspect of the records relating to or payments made by the depository or any participants on account of beneficial ownership interests in the global security for the Subordinated Debt Securities or for maintaining, supervising or reviewing any records relating to such beneficial ownership interests.

        We expect that the depository for a series of Subordinated Debt Securities or its nominee, upon receipt of any payment of principal or interest in respect of a permanent global security representing the Subordinated Debt Securities, will immediately credit participants' accounts with payments in amounts proportionate to their respective beneficial interests in the principal amount of such global security for the Subordinated Debt Securities as shown on the records of the depository or its nominee. We also expect that payments by participants to owners of beneficial interests in a global security held through such participants will be governed by standing instructions and customary practices, as is now the case with securities held for the accounts of customers registered in "street name". Such payments will be the responsibility of such participants.

        If the depository for a series of Subordinated Debt Securities notifies us at any time that it is unwilling, unable or ineligible to continue as depository and a successor depository is not appointed by us within 90 days, Westpac will issue definitive Subordinated Debt Securities of that series in exchange for the global security or securities representing that series of Subordinated Debt Securities. In addition, we may at any time and in our sole discretion, subject to any limitations described in the applicable prospectus supplement or term sheet relating to the Subordinated Debt Securities, determine not to have any Subordinated Debt Securities of a series represented by one or more global securities, and, in such event, will issue definitive Subordinated Debt Securities of that series in exchange for the global security or securities representing that series of Subordinated Debt Securities. If definitive Subordinated Debt Securities are issued, an owner of a beneficial interest in a global security will be entitled to physical delivery of definitive Subordinated Debt Securities of the series represented by that global security equal in principal amount to that beneficial interest and to have the Subordinated Debt Securities registered in its name. Definitive Subordinated Debt Securities of any series so issued will be issued in denominations, unless otherwise specified by us in the applicable prospectus supplement or term sheet, of $1,000 and integral multiples of $1,000 in excess thereof.

        For information concerning Conversion or Write-off upon the occurrence of a Non-Viability Trigger Event, see "—Additional Provisions" below.

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Payment of Additional Amounts

        The subordinated indenture provides that Westpac will pay all amounts that it is required to pay in respect of the Subordinated Debt Securities without withholding or deduction for, or on account of, any present or future taxes, duties, assessments or other governmental charges imposed or levied by or on behalf of Australia or any political subdivision or taxing authority thereof or therein, unless such withholding or deduction is required by law. In that event, Westpac will pay such additional amounts as may be necessary so that the net amount received by the holder of the Subordinated Debt Securities, after such withholding or deduction, will equal the amount that the holder would have received in respect of the Subordinated Debt Securities without such withholding or deduction. However, as described below, the subordinated indenture provides that, under certain circumstances, Westpac will not pay additional amounts.

        The subordinated indenture provides that Westpac will not pay additional amounts in respect of Subordinated Debt Securities for or on account of:

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        In addition, the subordinated indenture provides that additional amounts will also not be payable by Westpac with respect to any payment on any Subordinated Debt Security to any holder who is a fiduciary or partnership or other than the sole beneficial owner of such payment to the extent that payment would, under the laws of Australia or any political subdivision or taxing authority thereof or therein, be treated as being derived or received for tax purposes by a beneficiary or settler of that fiduciary or member of that partnership or a beneficial owner, in each case, who would not have been entitled to those additional amounts had it been the actual holder of such Subordinated Debt Securities.

        If, as a result of Westpac's consolidation or merger with or into an entity organized under the laws of a country other than Australia or a political subdivision of a country other than Australia or the sale, conveyance or transfer by Westpac of all or substantially all its assets to such an entity, such an entity assumes the obligations of Westpac under the subordinated indenture and the Subordinated Debt Securities, such entity will pay additional amounts on the same basis as described above, except that references to "Australia" (other than in the exception applicable in the event the holder or beneficial owner of the Subordinated Debt Securities is an associate of Westpac for purposes of section 128F(6) of the Australian Tax Act) will be treated as references to both Australia and the country in which such entity is organized or resident (or deemed resident for tax purposes).

        Westpac, and any other person to or through which any payment with respect to the Subordinated Debt Securities may be made, shall be entitled to withhold or deduct from any payment with respect to such Subordinated Debt Securities amounts required to be withheld or deducted under or in connection with FATCA, and holders and beneficial owners of such Subordinated Debt Securities shall not be entitled to receive any gross up or other additional amounts on account of any such withholding or deduction.

(Section 12.8 of the subordinated indenture.)

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Redemption of Subordinated Debt Securities

        If the Subordinated Debt Securities of a series provide for redemption at Westpac's election (subject to APRA's prior written approval, which may or not be given), unless otherwise provided in the applicable prospectus supplement or term sheet and except as described below under "—Redemption for Taxation Reasons" and "—Redemption for Regulatory Reasons", Westpac may redeem the Subordinated Debt Securities of such series in whole, but not in part, and such redemption shall not be permitted earlier than the fifth anniversary of the issue date.

        Any redemption of the Subordinated Debt Securities of a series shall be on not less than 30 nor more than 60 days' notice. In the case of Subordinated Debt Securities in global form, such Subordinated Debt Securities will be selected for redemption in accordance with the procedures of the depository. Notice of such redemption will be mailed to holders of Subordinated Debt Securities of such series to their last addresses as they appear on the register of the Subordinated Debt Securities of such series.

        Westpac may redeem the Subordinated Debt Securities of a series only if Westpac has received the prior written approval of APRA (approval is at the discretion of APRA and may or may not be given) and:

        Holders should not expect that APRA's approval will be given for any redemption of the Subordinated Debt Securities.

        No holder of the Subordinated Debt Securities has the right to request redemption of their Subordinated Debt Securities at any time.

(Sections 1.6, 13.1 and 13.3 of the subordinated indenture.)

        The subordinated indenture provides that if an Adverse Tax Event (as defined below) has occurred, Westpac may, subject to the conditions described below and provided that Westpac has obtained a supporting opinion of legal or tax advisers of recognized standing in Australia (or, if a Relevant Transaction (as defined below) occurs and the home jurisdiction for tax purposes of such other entity is not Australia, legal or tax advisers of recognized standing in such other jurisdiction), redeem all, but not less than all, of any series of Subordinated Debt Securities at a redemption price, equal to the Outstanding Principal Amount of the Subordinated Debt Securities to be redeemed, plus accrued and unpaid interest to, but excluding, the redemption date. (Section 13.6 of the subordinated indenture.)

        An "Adverse Tax Event" shall, with respect to any Subordinated Debt Securities of a series, mean that either:

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being in each case by any legislative body, court, government authority or regulatory body (irrespective of the manner in which such amendment, clarification, change or Administrative Action is announced) on or after the issue date of the Subordinated Debt Securities of such series but which Westpac did not expect at the issue date of the Subordinated Debt Securities of such series (provided that, if after the issue date Westpac is merged into or consolidated with another entity or all or substantially all of Westpac's assets are sold or transferred to another entity and such entity assumes the obligations of Westpac under the subordinated indenture and the Subordinated Debt Securities (a "Relevant Transaction"), and the home jurisdiction for tax purposes of such other entity is not Australia (or if such home jurisdiction has already become a jurisdiction other than Australia, is different to the jurisdiction which it is immediately prior to the Relevant Transaction), the references herein to "issue date" of the Subordinated Debt Securities of such series shall be deemed to be to the date the Relevant Transaction is completed) and:

        Westpac may redeem the Subordinated Debt Securities of a series upon the occurrence of an Adverse Tax Event only if Westpac has received the prior written approval of APRA (approval is at the discretion of APRA and may or may not be given) and:

(Sections 13.1 and 13.6 of the subordinated indenture.)

        The subordinated indenture provides that if a Regulatory Event (as defined below) has occurred, Westpac may, subject to the conditions described below and provided that Westpac has obtained a supporting opinion of advisers of recognized standing in Australia or confirmation from APRA, redeem all, but not less than all, of any series of Subordinated Debt Securities at a redemption price, equal to the Outstanding Principal Amount of the Subordinated Debt Securities to be redeemed, plus accrued and unpaid interest to, but excluding, the redemption date. (Section 13.6 of the subordinated indenture.)

        A "Regulatory Event" shall, with respect to any of the Subordinated Debt Securities of a series, mean that either:

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Westpac is not or will not be entitled to treat all of the Subordinated Debt Securities of such series as Tier 2 Capital in whole, provided that, in each case, Westpac did not expect at the issue date of the Subordinated Debt Securities of such series that the matter giving rise to the Regulatory Event would occur.

        Westpac may redeem the Subordinated Debt Securities of a series upon the occurrence of a Regulatory Event only if Westpac has received the prior written approval of APRA (approval is at the discretion of APRA and may or may not be given) and:

(Sections 13.1 and 13.6 of the subordinated indenture.)

Events of Default

        The subordinated indenture provides that, if an event of default in respect of any series of Subordinated Debt Securities shall have occurred and be continuing, the sole remedies for either the trustee or the holder of any outstanding Subordinated Debt Securities of the relevant series shall be the remedies described below.

        The subordinated indenture defines an event of default in respect of any series of Subordinated Debt Securities as any of the following events or circumstances:

        Upon the occurrence of an event of default for a failure to pay principal or interest as described above, the sole remedies for the trustee or the holder of any Subordinated Debt Securities of the relevant series shall be to bring proceedings:

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        In the event of a Winding-Up in Australia (but not in any other jurisdiction), the Subordinated Debt Securities of the relevant series will, without any further action on the part of the trustee or any holder thereof, become immediately due and payable by Westpac, unless they have been Converted or Written-off, and the trustee or any such holder may, subject to the limitations described under "—Additional Provisions Applicable to Subordinated Debt Securities—Status and Subordination", prove or claim for the Outstanding Principal Amount of each Subordinated Debt Security it holds (together with all interest accrued but unpaid to the date of payment). However, it is unlikely a Winding-Up will occur without a Non-Viability Trigger Event having occurred first and the Subordinated Debt Securities being Converted or Written-off. In that event:

        In the event of the occurrence of any event of default, no remedy against Westpac (including, without limitation, any right to sue for a sum of damages which has the same economic effect as an acceleration of Westpac's payment obligations) shall be available to the trustee or any holder of any Subordinated Debt Securities for the recovery of amounts owing in respect of the Subordinated Debt Securities or in respect of any breach by Westpac of any obligation, condition or provision binding on it under the terms of the Subordinated Debt Securities other than as described in this prospectus or the applicable prospectus supplement or term sheet.

        A holder of Subordinated Debt Securities will have no right to accelerate payment or exercise any other remedies (including any right to sue for damages) as a consequence of any default other than as specifically described in this prospectus or in any applicable prospectus supplement or term sheet. In the event of a Winding-Up in Australia (but not in any other jurisdiction), the Subordinated Debt Securities of the relevant series will become immediately due and payable unless they have been Converted or Written-off. This will be the only circumstance in which the payment of principal on Subordinated Debt Securities of the relevant series may be accelerated.

        If any Subordinated Debt Security becomes due and payable as a result of an event of default, Westpac shall pay such amount as is equal to the Outstanding Principal Amount (or such other amount specified in or determined in accordance with any applicable prospectus supplement or term sheet) together with all accrued but unpaid interest, if any.

(Section 8.1 of the subordinated indenture.)

        Under the Australian Banking Act, for the purpose of protecting depositors and maintaining the stability of the Australian financial system, APRA has administrative power, among other things, to issue a direction to us and certain of our related entities regarding the conduct of our business, including prohibiting making payments with respect to our debt obligations (including the Subordinated Debt Securities), and, if we become unable to meet our obligations or suspend payment (and in certain other limited circumstances), to appoint a "Banking Act statutory manager" to take control of our business (including certain of our related entities).

Other Provisions

        The Trust Indenture Act of 1939, as amended, which we refer to as the Trust Indenture Act, and Section 9.5 of the subordinated indenture provides that the trustee will, within 90 days after the

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occurrence of a default in respect of any series of Subordinated Debt Securities, give to the holders of that series notice of all uncured defaults known to it; provided that , except in the case of default in the payment on any of the Subordinated Debt Securities of that series, the trustee will be protected in withholding such notice if it in good faith determines that the withholding of such notice is in the interest of the holders of that series. The term "default" for the purpose of this provision means any event which is, or after notice or lapse of time or both would become an event of default as defined in the subordinated indenture, with respect to Subordinated Debt Securities of such series.

        The subordinated indenture provides that the holders of a majority in aggregate principal amount of the outstanding Subordinated Debt Securities of any series may, subject to limitations, direct the time, method and place of conducting proceedings for any remedy available to the trustee, or exercising any trust or power conferred on the trustee in respect of the Subordinated Debt Securities of that series. (Section 8.5 of the subordinated indenture.)

        The subordinated indenture provides that the trustee, subject to the provisions of the Trust Indenture Act will not be required to expend or risk its own funds or otherwise incur any financial liability in the performance of any of its duties under the indentures, or in the exercise of its rights or powers, if it shall have reasonable grounds for believing that repayment of such funds or adequate indemnity against such risk or liability is not reasonably assured to it. (Section 9.1(g) of the subordinated indenture.)

        The subordinated indenture includes covenants that Westpac will file annually with the trustee a certificate of compliance with all conditions and covenants under the subordinated indenture. (Section 12.7 of the subordinated indenture.)

Modification of the Subordinated Indenture

        The subordinated indenture contains provisions permitting Westpac and the trustee to enter into one or more supplemental indentures without the consent of the holders of any of the Subordinated Debt Securities in order to:

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        In addition, no amendment to the terms and conditions of the subordinated indenture or a Subordinated Debt Security that at the time of such amendment qualifies as Tier 2 Capital is permitted without the prior written consent of APRA if such amendment may affect the eligibility of the Subordinated Debt Security as Tier 2 Capital as described in the Prudential Standards.

        The subordinated indenture also contains provisions permitting Westpac and the trustee, with the consent of the holders of not less than a majority of the aggregate Outstanding Principal Amount of the Subordinated Debt Securities of the affected series, to execute supplemental indentures adding any provisions to or changing or eliminating any of the provisions of the subordinated indenture or modifying the rights of the holders of Subordinated Debt Securities of that series. No supplemental indenture may, without the consent of the holders of all of the affected Subordinated Debt Securities, among other things:

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        Any such consent given by the holder of a Subordinated Debt Security of a series shall be conclusive and binding upon such holder and all future holders of the Subordinated Debt Securities of such series and of any Subordinated Debt Securities of such series issued on registration thereof, the transfer thereof or in exchange therefor or in lieu thereof, whether or not notation of such consent is made upon the Subordinated Debt Securities of such series.

        In addition, no amendment to the terms and conditions of the subordinated indenture or a Subordinated Debt Security that at the time of such amendment qualifies as Tier 2 Capital is permitted without the prior written consent of APRA if such amendment may affect the eligibility of the Subordinated Debt Security as Tier 2 Capital as described in the Prudential Standards.

Satisfaction and Discharge of the Subordinated Indenture

        The subordinated indenture shall generally cease to be of any further effect with respect to a series of Subordinated Debt Securities when Westpac has delivered to the trustee for cancellation all Subordinated Debt Securities of that series. (Section 7.1 of the subordinated indenture.)

Record Dates

        Westpac will generally be entitled to set any date as the record date for the purpose of determining the holders of Subordinated Debt Securities entitled to give or take any action under the subordinated indenture in the manner specified in such indenture. If a record date is set, action may only be taken by persons who are holders of Subordinated Debt Securities on the record date. Also, unless otherwise specified in the applicable prospectus supplement or term sheet applicable to a series of Subordinated Debt Securities, to be effective, any action must be taken within 180 days of the record date. (Section 1.4(g) of the subordinated indenture.)

Notice

        Notices to holders of Subordinated Debt Securities will be given by mail to the addresses of holders appearing in the applicable securities register. Westpac and the trustee may treat the person in whose name a Subordinated Debt Security is registered as the owner thereof for all purposes. (Sections 1.6 and 3.8 of the subordinated indenture.)

Governing Law

        The subordinated indenture and the Subordinated Debt Securities will be governed by, and construed in accordance with, the laws of the State of New York, without regard to conflict of law principles, except that the Non-Viability Trigger Event, Write-off, Conversion and subordination provisions contained in Articles IV, V and VI of the subordinated indenture and any provisions in the subordinated indenture and the Subordinated Debt Securities which relate to, or define terms used in, such Articles, will be governed by, and construed in accordance with, the laws of the State of New South Wales, Commonwealth of Australia. (Section 1.11 of the subordinated indenture.)

        The subordinated indenture also provides that to the extent Westpac or any of its properties, assets or revenues may have or may become entitled to, or have attributed to it, any right of immunity, on the grounds of sovereignty or otherwise, from any legal action, suit or proceeding, from the giving of any

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relief in any thereof, from setoff or counterclaim, from the jurisdiction of any court, from service of process, from attachment upon or prior to judgment, from attachment in aid of execution or judgment, or from execution of judgment, or other legal process or proceeding for the giving of any relief or for the enforcement of any judgment, in any jurisdiction in which proceedings may at any time be commenced, with respect to its obligations, liabilities or any other matter under or arising out of or in connection with any Subordinated Debt Security or the subordinated indenture, Westpac, to the extent permitted by applicable law, will irrevocably and unconditionally waive, and agree not to plead or claim, any such immunity and will consent to such relief and enforcement. (Section 8.12 of the subordinated indenture.)

Consolidation, Merger or Sale of Assets

        The subordinated indenture provides that Westpac may not merge or consolidate with or into any other corporation or other entity or sell, convey or transfer all or substantially all of Westpac's assets, unless:

        Upon any such consolidation, merger or sale where Westpac is not the surviving entity, the successor corporation formed by such consolidation or into which Westpac is merged or to which such sale is made shall succeed to and be substituted for Westpac under the subordinated indenture and the Subordinated Debt Securities and all such obligations of Westpac shall terminate.

        Notwithstanding the above, the terms and conditions of the subordinated indenture and Subordinated Debt Securities shall not prevent Westpac from consolidating with or merging into any other person or conveying, transferring or leasing its properties and assets substantially as an entirety to any person, or from permitting any person to consolidate with or merge into Westpac or to convey, transfer or lease its properties and assets substantially as an entirety to Westpac where such consolidation, merger, transfer or lease is:

(Section 10.1 of the subordinated indenture.)

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Concerning the Trustee

        Westpac may from time to time maintain credit facilities, and have other customary banking relationships with The Bank of New York Mellon, the trustee.

Consent to Service of Process

        In accordance with the provisions of the subordinated indenture, we have designated Westpac Banking Corporation, New York Branch, 575 Fifth Avenue, 39th Floor, New York, New York 10017-2422, Attention: Branch Manager, as our authorized agent for service of process in any legal action or proceeding against us with respect to Westpac's obligations under such indenture or the Subordinated Debt Securities instituted in any federal or state court in the Borough of Manhattan, The City of New York, New York and will irrevocably submit to the non-exclusive jurisdiction of such courts in respect of any such legal action or proceeding. (Section 1.14 of the subordinated indenture.)

Additional Provisions

1.     Status of the Subordinated Debt Securities—General

1.1   Acknowledgements

        The subordinated indenture provides that each holder of Subordinated Debt Securities by its purchase or holding of a Subordinated Debt Security is deemed to acknowledge that:

        Unless the applicable prospectus supplement or term sheet specifies otherwise, the primary method of loss absorption will be Conversion, subject to possible Write-off as described below in Section 2.2.

(Section 4.1 of the subordinated indenture.)

1.2   Status and subordination

        The subordinated indenture provides that:

(Section 4.2 of the subordinated indenture.)

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1.3   Solvency condition

        The subordinated indenture provides that, prior to a Winding-Up:

        A certificate as to whether Westpac is Solvent signed by two authorized signatories of Westpac or, if Westpac is in Winding-Up, the Liquidator, shall, in the absence of fraud or manifest or proven error, be conclusive evidence of the information contained in such certificate. In the absence of such a certificate, a holder of Subordinated Debt Securities shall be entitled to assume (unless the contrary is proved) that Westpac is, and will after any payment as aforesaid be, Solvent.

        Until Subordinated Debt Securities have been Converted or Written-off:

        Any amount not paid as a consequence of the provisions described in this Section 1.3: (x) will remain a debt owing to the holder of Subordinated Debt Securities by Westpac until it is paid and shall be payable on the first date on which the provisions described in paragraphs (a) and (b) of this Section 1.3 would allow payment of such amount (whether or not such date is otherwise a date on which interest is payable or other date on which such amount becomes due); and (y) shall not constitute an event of default (see "—Description of the Subordinated Debt Securities—Events of Default" above).

(Section 4.3 of the subordinated indenture.)

1.4   Winding-Up

        The subordinated indenture provides that, in a Winding-Up:

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        Unless and until Senior Creditors have been paid in full, neither the trustee nor any holder of Subordinated Debt Securities that have not been Converted or Written-off (or that have been partially Converted or Written-off) will be entitled to claim in the Winding-Up in competition with Senior Creditors so as to diminish any payment which, but for that claim, Senior Creditors would have been entitled to receive.

        In a Winding-Up, the trustee and any holder of Subordinated Debt Securities that have not been Converted or Written-off (or that have been partially Converted or Written-off) will only be entitled to prove for any sums payable in respect of the Subordinated Debt Securities as a liability which is subject to prior payment in full of Senior Creditors. Holders of Subordinated Debt Securities waive in respect of any Subordinated Debt Security, to the fullest extent permitted by law, any right to prove in a Winding-Up as a creditor ranking for payment in any other manner. The trustee and any holder of Subordinated Debt Securities will have no further or other claim on Westpac in a Winding-Up, other than the claim for the Outstanding Principal Amount and interest, as described above, and in the case of the trustee, its claims under Section 9.8 of the subordinated indenture.

        However, it is unlikely a Winding-Up will occur without a Non-Viability Trigger Event having occurred first and the Subordinated Debt Securities being Converted or Written-off. In that event:

(Section 4.4 of the subordinated indenture.)

1.5   No set-off

        The subordinated indenture provides that neither Westpac nor the trustee or any holder of Subordinated Debt Securities is entitled to set-off any amounts due in respect of Subordinated Debt Securities held by the holder against any amount of any nature owed by Westpac to such holder or by such holder to Westpac.

(Section 4.5 of the subordinated indenture.)

1.6   Clawback

        The subordinated indenture provides that each holder of Subordinated Debt Securities by its purchase or holding of a Subordinated Debt Security is deemed to have irrevocably acknowledged and agreed that it or the trustee will pay or deliver to the Liquidator any payment or asset, whether voluntary or in any other circumstances, received by such holder or the trustee from or on account of Westpac (including by way of credit, set-off or otherwise) or from any Liquidator (or any provisional or other liquidator, receiver, manager or statutory manager of Westpac) in violation of the provisions described in Section 1.2 or in "—Events of Default" above.

(Section 4.6 of the subordinated indenture.)

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1.7   Other provisions

        The subordinated indenture provides that each holder of Subordinated Debt Securities by its purchase or holding of a Subordinated Debt Security is deemed to have irrevocably acknowledged and agreed:

        No consent of any Senior Creditor shall be required for any amendment of the provisions described in Sections 1.2 and 1.4 above in relation to any outstanding Subordinated Debt Securities.

(Section 4.7 of the subordinated indenture.)

2.     Non-Viability, Conversion and Write-off

2.1   Non-Viability Trigger Event

        The subordinated indenture provides that:

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(Section 5.1 of the subordinated indenture.)

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2.2   Automatic Conversion or Write-off upon the occurrence of a Non-Viability Trigger Event

        The subordinated indenture provides that if a Non-Viability Trigger Event has occurred and all or some Subordinated Debt Securities are (or a percentage of the Outstanding Principal Amount of each Subordinated Debt Security is) required to be Converted or Written-off in accordance with the provisions described in Section 2.1 above, then:

(Section 5.2 of the subordinated indenture.)

2.3   No further rights

        The subordinated indenture provides that if:

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then:

(Section 5.3 of the subordinated indenture.)

2.4   Consent to receive Ordinary Shares and other acknowledgements

        The subordinated indenture provides that subject to any Write-off required in accordance with the provisions described in Section 2.3 above, each holder of Subordinated Debt Securities by its purchase or holding thereof will be deemed to have irrevocably agreed that:

        (c)

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(Section 5.4 of the subordinated indenture.)

2.5   Issue of ordinary shares of successor company

        The subordinated indenture provides that if Westpac shall cease to be the ultimate parent company of the Group and the successor company is an Approved Successor, the provisions described herein under "—Additional Provisions Applicable to Subordinated Debt Securities" may be amended in accordance with the provisions described in Section 3.14 below.

(Section 5.5 of the subordinated indenture.)

2.6   No conversion at the option of the holders

        Holders of Subordinated Debt Securities do not have a right to request Conversion of their Subordinated Debt Securities at any time.

(Section 5.6 of the subordinated indenture.)

2.7   Priority of early Conversion obligations

        A Conversion or Write-off required because of a Non-Viability Trigger Event shall take place on the date, and in the manner, described herein or in the applicable prospectus supplement or term sheet, notwithstanding redemption described herein or in the applicable prospectus supplement or term sheet.

(Section 5.7 of the subordinated indenture.)

2.8   No rights before Conversion

        Before Conversion, a Subordinated Debt Security confers no rights on a holder of Subordinated Debt Securities:

        except as otherwise disclosed herein or in an applicable prospectus supplement or term sheet.

(Section 5.8 of the subordinated indenture.)

2.9   Trustee's rights upon Conversion or Write-off

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(Section 5.9 of the subordinated indenture.)

3.     Procedures for Conversion

3.1   Conversion

        On the Non-Viability Trigger Event Date, subject to the provisions described in Section 2.3 above and Section 3.10 below, the following provisions will apply.

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Conversion Number for
each Subordinated Debt
Security
 



=
  Outstanding Principal Amount of the Subordinated Debt Security
(translated into Australian Dollars in accordance with paragraph (b)
of the definition of Outstanding Principal Amount where the
calculation date shall be the Non-Viability Trigger Event Date)

P × VWAP

where:

         Outstanding Principal Amount has the meaning given to it in Section 4 below, as adjusted in accordance with Section 3.13 below.

         P means the number specified in the applicable prospectus supplement or term sheet.

         VWAP means the VWAP during the VWAP Period.

         Maximum Conversion Number means a number calculated according to the following formula:




Maximum Conversion Number
for each Subordinated
Debt Security
 



=
  Outstanding Principal Amount of the Subordinated Debt Security
(translated into Australian Dollars in accordance with
paragraph (b) of the definition of Outstanding Principal Amount
where the calculation date shall be the ASX Business Day prior
to the issue date of the Subordinated Debt Securities of a series)

0.20 × Issue Date VWAP

where:

         Outstanding Principal Amount has the meaning given to it in Section 4 below, as adjusted in accordance with Section 3.13 below.

         If any Subordinated Debt Securities are Converted following a Non-Viability Trigger Event, it is likely that the Maximum Conversion Number will apply and limit the number of Ordinary Shares to be issued. In this case, the value of the Ordinary Shares received is likely to be significantly less than the Outstanding Principal Amount of those Subordinated Debt Securities. The Australian Dollar may depreciate in value against the U.S. dollar by the time of Conversion. In that case, the Maximum Conversion Number is more likely to apply.

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(Section 6.1 of the subordinated indenture.)

3.2   Adjustments to VWAP generally

        For the purposes of calculating VWAP under the provisions described in Section 3.1 above:

(Section 6.2 of the subordinated indenture.)

3.3   Adjustments to VWAP for capital reconstruction

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(Section 6.3 of the subordinated indenture.)

3.4   Adjustments to Issue Date VWAP generally

        For the purposes of determining the Issue Date VWAP as described in Section 3.1 above, adjustments will be made as described in Sections 3.2 and 3.3 above during the period in which the Issue Date VWAP is determined. On and from the issue date of the Subordinated Debt Securities of a series, adjustments to the Issue Date VWAP:

(Section 6.4 of the subordinated indenture.)

3.5   Adjustments to Issue Date VWAP for bonus issues

        The subordinated indenture provides that:

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(Section 6.5 of the subordinated indenture.)

3.6   Adjustments to Issue Date VWAP for capital reconstruction

(Section 6.6 of the subordinated indenture.)

3.7   No adjustment to Issue Date VWAP in certain circumstances

        Notwithstanding the provisions described in Section 3.5 above, no adjustment will be made to the Issue Date VWAP where any such adjustment (expressed in Australian Dollars and cents and rounded to the nearest whole cent with A$0.005 being rounded upwards) would be less than one per cent of the Issue Date VWAP then in effect.

(Section 6.7 of the subordinated indenture.)

3.8   Announcement of adjustment to Issue Date VWAP

        Westpac will notify any adjustment to the Issue Date VWAP made as described above to ASX and to the trustee and holders of Subordinated Debt Securities as described above under the caption

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"—Notice" within 10 ASX Business Days of Westpac determining the adjustment and the adjustment will be final and binding.

(Section 6.8 of the subordinated indenture.)

3.9   Status and listing of Ordinary Shares

(Section 6.9 of the subordinated indenture.)

3.10 Conversion; receipt of Ordinary Shares; where the holder of Subordinated Debt Securities does not wish to receive Ordinary Shares; Holders' Nominee

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(Section 6.10 of the subordinated indenture.)

3.11 Conversion or Write-off if amounts not paid

        Conversion or Write-off may occur even if an amount shall not have been paid to a holder of Subordinated Debt Securities due to Westpac's inability to satisfy the solvency condition described in Section 1.3 above.

(Section 6.11 of the subordinated indenture.)

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3.12 Conversion or Write-off after Winding-Up commences

        If an order is made by a court, or an effective resolution is passed, for a Winding-Up, and a Non-Viability Trigger Event occurs, then Conversion or Write-off shall occur (subject to the provisions described in Section 2.3 above) in accordance with the provisions described in Sections 2.1 and 2.2 above.

(Section 6.12 of the subordinated indenture.)

3.13 Conversion or Write-off of a percentage of Outstanding Principal Amount

        If in accordance with the provisions described in Section 2.1 above, a percentage of the Outstanding Principal Amount of each Subordinated Debt Security is required to be Converted or Written-off upon the occurrence of a Non-Viability Trigger Event, then the provisions described in Section 3 will apply to the Conversion or Write-off as if references to the Outstanding Principal Amount of each Subordinated Debt Security were references to the relevant percentage of the Outstanding Principal Amount of each Subordinated Debt Security to be Converted or Written-off.

(Section 6.13 of the subordinated indenture.)

3.14 Amendment of terms and conditions relating to Conversion for Approved Successor

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        Any capital injection carried out pursuant to the provisions described in Section 3.14(f)(ii) must:

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        The foregoing provisions described in this Section 3.14 will not prevent Westpac from proposing, or limit, any scheme of arrangement or other similar proposal that may be put to holders of Subordinated Debt Securities or Westpac's members.

(Section 6.14 of the subordinated indenture.)

3.15 Power of attorney

        The subordinated indenture provides that by holding a Subordinated Debt Security, each such holder is deemed to irrevocably appoint each of Westpac, its directors or authorized signatories and any of Westpac's Liquidators or administrators (each an Attorney) severally to be the attorney of such holder with power in the name and on behalf of such holder to sign all documents and transfers and do any other thing as may in the Attorney's opinion be necessary or desirable to be done in order to give effect to, or for such holder to observe or perform such holder's obligations under the provisions described in Sections 2 and 3. Such power of attorney is given for valuable consideration and to secure the performance by such holder of such holder's obligations under the provisions described in Sections 2 and 3 and is irrevocable.

(Section 6.15 of the subordinated indenture.)

3.16 Cancellation

        The subordinated indenture provides that all Subordinated Debt Securities so Converted will forthwith be canceled and may not be re-issued or resold.

(Section 6.16 of the subordinated indenture.)

3.17 Calculations

        For the avoidance of doubt, any and all calculations relating to the Conversion or Write-off of the Subordinated Debt Securities and any adjustments thereto shall be performed by, or on behalf of, Westpac and the holders shall direct any questions or concerns regarding such calculations to Westpac or such other persons performing such calculations or adjustments. In no event shall the trustee be required to perform such calculations unless otherwise agreed.

(Section 6.17 of the subordinated indenture.)

4.     Definitions

        In this section "—Additional Provisions Applicable to Subordinated Debt Securities", the following expressions have the following meanings:

         "Additional Tier 1 Capital" has the meaning set out in the Prudential Standards;

         "Administrative Action " means any judicial decision, official pronouncement or action, published or private ruling, interpretative decision, regulatory procedure or policy, application of a regulatory procedure or policy and any notice or announcement (including any notice or announcement of intent to adopt or make any of those things);

         "Adverse Tax Event" has the meaning set out in "—Redemption of Subordinated Securities—Redemption for Taxation Reasons";

         "Approved Replacement Notice" has the meaning set out in Section 3.14(a);

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         "Approved Successor" means a company that replaces, or is proposed to replace, Westpac as the ultimate parent company of the Group and that satisfies the following requirements:

        For the purposes of this definition, "independent expert" means a reputable investment bank, accounting firm or other suitably qualified body operating in Australia or an investment bank, accounting firm or other suitably qualified body of international repute acting independently of Westpac and appointed by Westpac to provide the opinions referred to in paragraphs (e) or (f) of this definition;

         "Approved Successor Share" has the meaning set out in Section 3.14(a)(ii)(A);

         "APRA" means the Australian Prudential Regulation Authority or any authority succeeding to its powers or responsibilities;

         "Assets" means, in respect of Westpac, its total non-consolidated gross assets as shown by the latest published full-year audited or half-year reviewed accounts, as the case may be, of Westpac, but adjusted for events subsequent to the date of such accounts in such manner and to such extent as two authorized signatories of Westpac or, if Westpac is in Winding-Up, the Liquidator may determine to be appropriate;

         "ASX" means the Australian Securities Exchange operated by ASX Limited (ABN 98 008 624 691);

         "ASX Business Day" means a business day as defined in the ASX Listing Rules;

         "ASX Listing Rules" means the listing rules of ASX from time to time with any modifications or waivers in their application to Westpac which ASX may grant;

         "Australian Banking Act" means the Banking Act 1959 of Australia;

         "Australian Corporations Act" means the Corporations Act 2001 of Australia;

         "Australian Dollars" and "A$" mean the lawful currency of Australia;

         " Australian Tax Act " means the Income Tax Assessment Act 1936 of Australia and the Income Tax Assessment Act 1997 of Australia, or any successor acts;

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         "Business Day" shall have the meaning set out in the applicable prospectus supplement or term sheet;

         "CHESS" has the meaning set out in Section 3.10(a)(ii);

         " Chi-X" means Chi-X Australia Pty Ltd (ABN 47 129 584 667);

         "Clearing System Holder" means that the Holder is the operator of a clearing system or a depository, or a nominee for a depository, for a clearing system;

        " Code " has the meaning set out in "—Description of the Subordinated Debt Securities—Payment of Additional Amounts";

         "Common Equity Tier 1 Capital" has the meaning set out in the Prudential Standards;

         "Conversion" means, upon the occurrence of a Non-Viability Trigger Event, the conversion of all or some Subordinated Debt Securities (or a percentage of the Outstanding Principal Amount of each Subordinated Debt Security) into Ordinary Shares of Westpac in accordance with the terms of the subordinated indenture. "Convert" and "Converted" shall have corresponding meanings;

         " Conversion Number " has the meaning set out in Section 3.1(a);

         " Cum Valu e" has the meaning set out in Section 3.2;

         "Denomination" has the meaning set out in the prospectus supplement;

         "Equal Ranking Instruments" means instruments which satisfy the requirements set out in one of the following paragraphs (a), (b) or (c):

         " FATCA " has the meaning set out in "—Description of the Subordinated Debt Securities—Payment of Additional Amounts";

         "FATCA Withholding" means any deduction or withholding made for or on account of FATCA;

         " FCS" has the meaning set out on the cover of this prospectus;

         "Foreign Holder" means a holder of Subordinated Debt Securities (a) whose place of residence is outside Australia or (b) who Westpac otherwise believes may not be a resident of Australia;

         "Holders' Nominee" has the meaning set out in Section 3.10(b)(vii);

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         " Ineligible Holder " means a holder of Subordinated Debt Securities that is prohibited or restricted by any applicable law or regulation in force in:

from being offered, holding or acquiring Ordinary Shares (provided that if the relevant prohibition or restriction only applies to the holder in respect of some of its Subordinated Debt Securities, it shall only be treated as an Ineligible Holder in respect of those Subordinated Debt Securities and not in respect of the balance of its Subordinated Debt Securities);

         "Interest Rate" means the rate or rates (expressed as a percentage per annum) of interest payable in respect of the Outstanding Principal Amount of the Subordinated Debt Securities specified in a prospectus supplement or a term sheet or calculated or determined in accordance with the provisions specified in a prospectus supplement or a term sheet;

         "Issue Date VWAP" means, in respect of Subordinated Debt Securities of a series, the VWAP during the period of 20 ASX Business Days on which trading in Ordinary Shares took place immediately preceding but not including the first date on which any Subordinated Debt Securities of that series were issued, as adjusted in accordance with Section 3;

         "Junior Ranking Capital Instruments" means instruments, present and future, issued by Westpac which:

         "Liabilities" means, in respect of Westpac, its total non-consolidated gross liabilities as shown by its latest published full-year audited or half-year reviewed accounts, as the case may be, but adjusted for events subsequent to the date of such accounts in such manner and to such extent as two authorized signatories of Westpac or, if Westpac is in Winding-Up, the Liquidator may determine to be appropriate;

         "Liquidator" means a liquidator or other official responsible for the conduct and administration of a Winding-Up;

         "Non-Viability Trigger Event" occurs when APRA notifies Westpac in writing that it believes:

         "Non-Viability Trigger Event Date" has the meaning set out in Section 2.1(c)(iii);

         "Ordinary Share" means a fully paid ordinary share in the capital of Westpac;

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         "Outstanding Principal Amount" means in respect of any Subordinated Debt Security which is outstanding at any time, the outstanding principal amount of the Subordinated Debt Security, and for such purposes:

         "Perpetual Capital Notes" means the Perpetual Capital Floating Rate Notes issued by Westpac on September 30, 1986 (as may be varied or amended from time to time);

         "Prudential Standards" means the prudential standards and guidelines published by APRA and as applicable to Westpac from time to time;

         "RBA" has the meaning set out in "—Description of the Subordinated Debt Securities—Ranking";

         " Reclassification " has the meaning set out in Section 3.3(a);

         " Recognized Exchange " means a recognized stock exchange or securities market in an Organization for Economic Cooperation and Development member state;

         "Regulatory Event" has the meaning set out in "—Redemption of Subordinated Securities—Redemption for Regulatory Reasons";

         "Related Entity" means an entity over which Westpac or any parent of Westpac exercises control or significant influence, as determined by APRA from time to time;

         "Relevant Securities" means Relevant Tier 1 Securities and Relevant Tier 2 Securities;

         "Relevant Tier 1 Security" means a security forming part of the Tier 1 Capital of Westpac on a "Level 1 basis" or "Level 2 basis" in accordance with the Prudential Standards which, upon the occurrence of a Non-Viability Trigger Event, may be either:

         "Relevant Tier 2 Security" means a security, including the Subordinated Debt Securities, forming part of the Tier 2 Capital of Westpac on a "Level 1 basis" or "Level 2 basis" in accordance with the Prudential Standards which, upon the occurrence of a Non-Viability Trigger Event, may be either:

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         "Relevant Transaction" has the meaning set out in "—Redemption of Subordinated Securities—Redemption for Taxation Reasons";

         " Replacement " has the meaning set out in Section 3.14(a)(i);

         "Reserve Bank Act" has the meaning set out in "—Description of the Subordinated Debt Securities—Ranking";

         "SEC" has the meaning set out in "About this Prospectus";

         "Senior Creditors" means all depositors and other creditors (present and future) of Westpac, including all holders of Westpac's debt:

         " Solvent " with respect to Westpac, shall mean (i) it is able to pay its debts as they fall due; and (ii) its Assets exceed its Liabilities;

         " Solvent Reconstruction " means a scheme of amalgamation or reconstruction not involving a bankruptcy or insolvency, where the obligations of Westpac in relation to the outstanding Subordinated Debt Securities are assumed by the successor entity to which all, or substantially all, of the property, assets and undertaking of Westpac are transferred or where an arrangement with similar effect not involving a bankruptcy or insolvency is implemented;

         " Specified Currency " has the meaning given in a prospectus supplement or a term sheet;

         "subordinated indenture" has the meaning set out in "—Description of the Subordinated Debt Securities";

         " Tax Legislation " means (a) the Income Tax Assessment Act 1936 of Australia or the Income Tax Assessment Act 1997 of Australia (both as amended from time to time, as the case may be, and a reference to any section of the Income Tax Assessment Act 1936 includes a reference to that section as rewritten in the Income Tax Assessment Act 1997), (b) any other law setting the rate of income tax payable by Westpac, and (c) any regulation made under such laws;

         " Tier 1 Capital " has the meaning set out in the Prudential Standards;

         " Tier 2 Capital " has the meaning set out in the Prudential Standards;

         "Trust Indenture Act" has the meaning set out in "—Description of the Subordinated Debt Securities—Other Provisions";

         " VWAP " means, subject to any adjustments under the provisions described in Sections 3 above, the average of the daily volume weighted average sale prices (such average and each such daily average sale price being expressed in Australian Dollars and cents and rounded to the nearest full cent, with A$0.005 being rounded upwards) of Ordinary Shares sold on ASX and Chi-X during the relevant period or on the relevant days but does not include any "crossing" transacted outside the "Open Session State" or any "special crossing" transacted at any time, each as defined in the ASX Market Rules or any overseas trades or trades pursuant to the exercise of options over Ordinary Shares;

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         "VWAP Period" means (a) in the case of a Conversion resulting from the occurrence of a Non-Viability Trigger Event, the period of 5 ASX Business Days on which trading in Ordinary Shares took place immediately preceding (but not including) the Non-Viability Trigger Event Date; or (b) otherwise, the period for which the VWAP is to be calculated as described herein or in the applicable prospectus supplement or term sheet;

         "Winding-Up" means the legal procedure for the liquidation of Westpac commenced when:

other than in connection with a Solvent Reconstruction.

         A Winding-Up must be commenced by a court order or an effective resolution of shareholders or members. Neither (i) the making of an application, the filing of a petition, or the taking of any other steps for the winding-up of Westpac (or any other any procedure whereby Westpac may be dissolved, liquidated, sequestered or cease to exist as a body corporate), nor (ii) the appointment of a receiver, administrator, administrative receiver, compulsory manager, Banking Act statutory manager or other similar officer (other than a Liquidator) in respect of Westpac, constitutes a Winding-Up for the purposes of the Subordinated Debt Securities.

         "Write-off" has the meaning set out in Section 2.3(c). "Written-off" shall have a corresponding meaning.

(Section 1.1 of the subordinated indenture.)

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DESCRIPTION OF ORDINARY SHARES

Share Capital

        As at November 2, 2018, Westpac, had 3,434,796,711 Ordinary Shares on issue.

Description of the type and class of securities admitted

        The Ordinary Shares were created under Australian legislation. The Ordinary Shares are currently listed on ASX and the NZX, and American Depository Shares representing Ordinary Shares are currently listed on the New York Stock Exchange. Westpac will use all reasonable endeavors to list the Ordinary Shares issued on Conversion of Subordinated Debt Securities on ASX.

Form and currency of the Ordinary Shares

        The Ordinary Shares are denominated in A$. The Ordinary Shares are in uncertificated, registered form.

Rights attaching to the Ordinary Shares

        Westpac was registered on August 23, 2002 as a public company limited by shares under the Australian Corporations Act. Westpac's constitution was most recently amended at the general meeting held on December 13, 2012. The rights attaching to Westpac's Ordinary Shares are set out in the Australian Corporations Act and its constitution, and include:

        Holders of Ordinary Shares are entitled to receive such dividends on those shares as may be determined by Westpac's Directors from time to time. Dividends that are paid but not claimed may be invested by our Directors for the benefit of Westpac until required to be dealt with in accordance with any law relating to unclaimed monies.

        Our constitution requires that dividends be paid out of our profits. In addition, under the Australian Corporations Act, Westpac must not pay a dividend unless our assets exceed our liabilities immediately before the dividend is declared and the excess is sufficient for payment of the dividend. In addition, the payment must be fair and reasonable to the Westpac's shareholders and must not materially prejudice Westpac's ability to pay its creditors.

        Subject to the Australian Corporations Act, the constitution, the rights of persons (if any) entitled to shares with special rights to dividend and any contrary terms of issue of or applying to any shares, our Directors may determine that a dividend is payable, fix the amount and the time for payment and authorize the payment or crediting by Westpac to, or at the direction of, each shareholder entitled to that dividend.

        If any dividends are returned unclaimed, we are generally obliged, under the Australian Banking Act, to hold those amounts as unclaimed monies for a period of three years. If at the end of that period the monies remain unclaimed by the shareholder concerned, we must submit an annual unclaimed money return to the Australian Securities and Investment Commission by March 31 each year containing the unclaimed money as at December 31 of the previous year. Upon such payment being made, we are discharged from further liability in respect of that amount.

        Westpac's Directors may, before paying any dividend, set aside out of our profits such sums as they think proper as reserves, to be applied, at the discretion of our Directors, for any purpose for which the profits may be properly applied. Westpac's Directors may carry forward so much of the profits remaining as they consider ought not to be distributed as dividends without transferring those profits to a reserve.

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        The following restrictions apply to our ability to declare and/or pay dividends:

        Holders of our fully paid Ordinary Shares have, at general meetings (including special general meetings), one vote on a show of hands and, upon a poll, one vote for each fully paid share held by them.

        Subject to any preferential entitlement of holders of preference shares on issue at the relevant time, holders of our Ordinary Shares are entitled to share equally in any surplus assets if we are wound up.

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TAXATION

United States Taxation

        The following is a general discussion of the material U.S. federal income tax considerations relating to the purchase, ownership and disposition of the Subordinated Debt Securities by Subordinated U.S. Holders (as defined below) who purchase the Subordinated Debt Securities in an offering of Subordinated Debt Securities at their issue price (generally the first price at which a substantial amount of the Subordinated Debt Securities of a series are sold (ignoring sales to bond houses, brokers or similar persons or organizations acting in the capacity of underwriters, placement agents or wholesalers)) and hold the Subordinated Debt Securities as capital assets, within the meaning of section 1221 of the Code. This discussion does not address all of the tax considerations that may be relevant to Subordinated U.S. Holders in light of their particular circumstances or to Subordinated U.S. Holders subject to special rules under U.S. federal income tax laws, such as banks, insurance companies, retirement plans, regulated investment companies, real estate investment trusts, dealers in securities, brokers, tax-exempt entities, Subordinated US Holders that own (or are deemed to own) 10% or more (by vote or value) of our stock, certain former citizens or residents of the U.S., Subordinated US Holders who hold the Subordinated Debt Securities as part of a "straddle", "hedging", "conversion" or other integrated transaction, Subordinated U.S. Holders who mark their securities to market for U.S. federal income tax purposes or Subordinated U.S. Holders whose functional currency is not the US dollar. In addition, this discussion does not address the effect of any state, local or non-U.S. tax laws or any U.S. federal estate, gift or alternative minimum tax considerations.

        This discussion is based on the Code, the Treasury Regulations promulgated thereunder and administrative and judicial pronouncements and the tax treaty between the United States and Australia, as amended (the "Tax Treaty"), all as in effect on the date hereof, and all of which are subject to change, possibly with retroactive effect. This discussion does not describe the US federal income tax considerations relating to the purchase, ownership or disposition of a Subordinated Debt Security where the amount of principal and/or interest payable is determined by reference to one or more commodities, derivatives, securities or indices or any currency or currencies other than the currency in which the Subordinated Debt Security is denominated, and a general discussion of any materially different US federal income tax considerations relating to any such particular Subordinated Debt Security will be included in the applicable prospectus supplement or term sheet.

        For purposes of this discussion, the term "Subordinated U.S. Holder" means a beneficial owner of a Subordinated Debt Security that is, for US federal income tax purposes, (i) an individual citizen or resident of the U.S., (ii) a corporation created or organized in or under the laws of the U.S. or of any state thereof or the District of Columbia, (iii) an estate the income of which is subject to U.S. federal income taxation regardless of its source, or (iv) a trust with respect to which a court within the U.S. is able to exercise primary supervision over its administration and one or more United States persons have the authority to control all of its substantial decisions, or certain electing trusts that were in existence on August 19, 1996 and were treated as domestic trusts on that date.

        If an entity treated as a partnership for U.S. federal income tax purposes invests in a Subordinated Debt Security, the US federal income tax considerations relating to such investment will generally depend in part upon the status and activities of such entity and its partners. Such an entity should consult its own tax advisor regarding the U.S. federal income tax considerations applicable to it and its partners of the purchase, ownership and disposition of such a Subordinated Debt Security.

        Except as described below under "—Passive Foreign Investment Company Considerations", this discussion assumes that we are not and will not be a passive foreign investment company ("PFIC") for US federal income tax purposes.

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         Prospective purchasers are advised to consult their own tax advisors as to the US federal income and other tax considerations relating to the purchase, ownership and disposition of the Subordinated Debt Securities in light of their particular circumstances, as well as the effect of any state, local or non-US tax laws.

        The determination of whether a security should be classified as indebtedness or equity for U.S. federal income tax purposes requires a judgment based on all the relevant facts and circumstances. There is no statutory, judicial or administrative authority that directly addresses the U.S. federal income tax treatment of securities similar to the Subordinated Debt Securities. It is therefore unclear whether the Subordinated Debt Securities should be treated as indebtedness or equity for U.S. federal income tax purposes. Nonetheless, although not free from doubt, based upon an analysis of the relevant facts and circumstances, under applicable law as of the date hereof, it is more likely than not that the Subordinated Debt Securities will be treated as equity for U.S. federal income tax purposes. This classification will be binding on a Subordinated U.S. Holder, unless the Subordinated U.S. Holder expressly discloses that it is adopting a contrary position on its income tax return. However, this treatment is not binding on the IRS and it is possible that a Subordinated Debt Security could be treated as indebtedness for U.S. federal income tax purposes. Due to the lack of authority regarding the classification of the Subordinated Debt Securities for U.S. federal income tax purposes, each Subordinated U.S. Holder should consult its own tax advisor regarding the appropriate classification of the Subordinated Debt Securities. Except as described below under "—Alternative Classification of the Subordinated Debt Securities", the remainder of this discussion assumes the Subordinated Debt Securities will be treated as equity for U.S. federal income tax purposes.

        Payments of interest on the Subordinated Debt Securities will be treated as distributions paid with respect to our stock. A Subordinated U.S. Holder that receives a distribution of cash with respect to a Subordinated Debt Security generally will be required to include the amount of such distribution in gross income as a dividend (without reduction for any non-U.S. tax withheld from such distribution) to the extent of our current or accumulated earnings and profits (as determined for U.S. federal income tax purposes). To the extent the amount of such distribution exceeds such current and accumulated earnings and profits, it generally will be treated first as a non-taxable return of capital to the extent of such Subordinated U.S. Holder's adjusted tax basis in such Subordinated Debt Security and then as gain (which will be treated in the manner described below under "—Sale, Exchange, Redemption, Write-off or Other Disposition of the Subordinated Debt Securities"). We have not maintained and do not plan to maintain calculations of earnings and profits for U.S. federal income tax purposes. As a result, a Subordinated US Holder may need to include the entire amount of any such distribution in income as a dividend.

        The amount of any distribution on a Subordinated Debt Security made in non-U.S. currency is the U.S. dollar value of the distribution translated at the spot rate of exchange on the date such distribution is received by or for the account of the Subordinated U.S. Holder. Such Subordinated U.S. Holder generally will have a basis in such non-U.S. currency equal to the U.S. dollar value of such non-U.S. currency on the date of such receipt. Any gain or loss on a conversion or other disposition of such non-U.S. currency by such Subordinated U.S. Holder generally will be treated as ordinary income or loss from sources within the United States.

        A distribution on a Subordinated Debt Security that is treated as a dividend generally will constitute income from sources outside the United States and generally will be categorized for U.S. foreign tax credit purposes as "passive category income" or, in the case of some Subordinated U.S. Holders, as "general category income". Such distribution will not be eligible for the "dividends

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received" deduction generally allowed to corporate shareholders with respect to dividends received from US corporations. A Subordinated U.S. Holder may be eligible to elect to claim a U.S. foreign tax credit against its U.S. federal income tax liability, subject to applicable limitations and holding period requirements, for any non-U.S. tax withheld from any such distribution. A Subordinated U.S. Holder that does not elect to claim a U.S. foreign tax credit for non-U.S. income tax withheld may instead claim a deduction for such withheld tax, but only for a taxable year in which the Subordinated US Holder elects to do so with respect to all non-U.S. income taxes paid or accrued by such Subordinated U.S. Holder in such taxable year. The rules relating to U.S. foreign tax credits are very complex, and each Subordinated US Holder should consult its own tax advisor regarding the application of such rules.

        Dividends received by an individual (or certain other non-corporate U.S. holders) from a "qualified foreign corporation" generally qualify for preferential rates of tax so long as (i) the distributing corporation is not a PFIC during the taxable year in which the dividend is paid or the preceding taxable year and (ii) certain holding period and other requirements are met. A non-US corporation generally will be considered to be a qualified foreign corporation if it is eligible for the benefits of a comprehensive income tax treaty with the United States that the U.S. Treasury Department determines is satisfactory for purposes of this provision and that includes an exchange of information program. The Tax Treaty, as currently in effect, meets these requirements. We believe that we are currently eligible for the benefits of the Tax Treaty, but no assurance can be given that we will be so eligible at all times. In addition, as described below under "—Passive Foreign Investment Company Considerations", we believe that we were not a PFIC in our previous taxable year, and we do not currently expect to become a PFIC but no assurance can be given that we will not be a PFIC in any year. The IRS may disagree with our conclusions regarding any of the foregoing. Moreover, it is not clear whether the existence of certain creditor remedies provided for under the terms of the Subordinated Debt Securities may adversely affect the holding period requirement for claiming the preferential rates of tax noted above. Therefore, no assurance can be given that a distribution on a Subordinated Debt Security held by a Subordinated U.S. Holder will qualify for such preferential rates. If such preferential rates are applicable, special rules apply for purposes of determining the recipient's investment income (which may limit deductions for investment interest) and foreign income (which may affect the amount of U.S. foreign tax credit). In addition, if a distribution received by an individual to which the preferential rates of tax noted above apply is an "extraordinary dividend" within the meaning of section 1059 of the Code, any loss recognized by such individual on a subsequent disposition of a Subordinated Debt Security will be treated as long-term capital loss to the extent of such "extraordinary dividend", irrespective of such Subordinated U.S. Holder's holding period for such Subordinated Debt Security. Each Subordinated U.S. Holder that is a non-corporate taxpayer should consult its own tax advisor regarding the possible applicability of these preferential rates of tax and the related restrictions and special rules.

        A Subordinated Debt Security will be considered to be issued with a "redemption premium" if the excess of the principal amount of the Subordinated Debt Security over its issue price is equal to or more than a de minimis amount ( 1 / 4 of 1 percent of the Subordinated Debt Security's principal amount multiplied by the number of complete years to its maturity). Any such redemption premium generally will be included in income as a dividend, to the extent of our current or accumulated earnings and profits, under principles similar to the principles applicable to original issue discount on a constant yield to maturity basis. Under certain circumstances, our right to redeem a Subordinated Debt Security could give rise to redemption premium for this purpose. If we believe that such a right exists, we will so advise in the applicable prospectus supplement or term sheet.

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        A Subordinated U.S. Holder generally will recognize a gain or loss for U.S. federal income tax purposes upon the sale, exchange or other disposition of a Subordinated Debt Security (other than Conversion into Ordinary Shares as described below under "—Conversion of the Subordinated Debt Securities into Ordinary Shares") in an amount equal to the difference, if any, between the amount realized on the sale, exchange or other disposition and such Subordinated U.S. Holder's adjusted tax basis in such Subordinated Debt Security, except to the extent that any cash received in a redemption that is treated as a sale or exchange is attributable to any accrued but unpaid interest on the Subordinated Debt Security, which might be treated as a distribution paid with respect to our stock, with the consequences described above under "—Interest Payments on the Subordinated Debt Securities". Any gain or loss generally will be capital gain or loss and will be long-term capital gain or loss if such Subordinated U.S. Holder has held such Subordinated Debt Security for more than one year at the time of such sale, exchange or other disposition. Net long-term capital gain of certain non-corporate Subordinated U.S. Holders generally is subject to preferential rates of tax. The deductibility of capital losses is subject to limitations. Such gain or loss generally will be from sources within the United States.

        A Write-off in full of a Subordinated Debt Security generally will be treated as a sale, exchange or other disposition of such Subordinated Debt Security. It is unclear how a partial Write-off of a Subordinated Debt Security should be treated for U.S. federal income tax purposes, and each Subordinated U.S. Holder should consult its own tax advisor regarding the U.S. federal income tax consequences of a partial Write-off.

        Depending on the circumstances, a redemption of a Subordinated Debt Security may either be (i) a sale or exchange or (ii) a distribution paid with respect to our stock. In general, a redemption of a Subordinated Debt Security will be treated as a sale or exchange if it:

        In determining whether any of these tests has been met, a Subordinated U.S. Holder must take into account not only Subordinated Debt Securities and other of our equity interests that the Subordinated U.S. Holder actually owns, but also Subordinated Debt Securities and other of our equity interests that the Subordinated U.S. Holder constructively owns within the meaning of section 318 of the Code. If a redemption does not meet at least one of these tests, it generally will be treated as a distribution paid with respect to our stock, with the consequences described above under "—Interest Payments on the Subordinated Debt Securities". Each Subordinated U.S. Holder should consult its own tax advisor regarding the U.S. federal income tax consequences of a redemption of a Subordinated Debt Security, including the treatment of adjusted tax basis where the redemption is treated as a distribution.

        A Subordinated US Holder that receives non-U.S. currency from the sale, exchange or other disposition of a Subordinated Debt Security generally will realize an amount equal to the U.S. dollar value of such non-U.S. currency translated at the spot rate of exchange on the settlement date of such sale, exchange or other disposition if (i) such Subordinated U.S. Holder is a cash basis or electing

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accrual basis taxpayer and the Subordinated Debt Security is treated as being "traded on an established securities market" or (ii) such settlement date is also the date of such sale, exchange or other disposition. Such Subordinated U.S. Holder generally will have a basis in such non-U.S. currency equal to the U.S. dollar value of such non-U.S. currency on the settlement date. Any gain or loss on a conversion or other disposition of such non-U.S. currency by such Subordinated U.S. Holder generally will be treated as ordinary income or loss from sources within the United States. Each Subordinated U.S. Holder should consult its own tax advisor regarding the U.S. federal income tax consequences of receiving non-U.S. currency from the sale, exchange or other disposition of a Subordinated Debt Security in cases not described in the first sentence of this paragraph.

        In general, a corporation organized outside the United States will be treated as a PFIC in any taxable year in which either (i) at least 75% of its gross income is "passive income" or (ii) on average at least 50% of the value of its assets is attributable to assets that produce passive income or are held for the production of passive income. We believe that we were not a PFIC in our previous taxable year, and we do not currently expect to become a PFIC for U.S. federal income tax purposes. However, because this determination is made annually at the end of each taxable year and is dependent upon a number of factors, some of which are beyond our control, such as the value of our assets (including goodwill) and the amount and type of our income, there can be no assurance that we will not be a PFIC in any taxable year or that the IRS will agree with our conclusion regarding its PFIC status in any taxable year.

        If we are a PFIC in any taxable year, Subordinated U.S. Holders could suffer adverse consequences, including the possible characterization of any gain from the sale, exchange or other disposition of a Subordinated Debt Security as ordinary income (rather than capital gain) and an interest charge on a portion of the resulting tax liability. Each Subordinated U.S. Holder should consult its own tax advisor regarding the U.S. federal income tax consequences if we are a PFIC during its holding period for the Subordinated Debt Securities.

        If a Subordinated Debt Security is Converted and a Subordinated U.S. Holder receives solely Ordinary Shares, such Subordinated U.S. Holder generally will not recognize any income, gain or loss upon such Conversion. A Subordinated U.S. Holder's tax basis in Ordinary Shares received upon Conversion of a Subordinated Debt Security generally will be the same as such Subordinated U.S. Holder's adjusted tax basis in such Subordinated Debt Security at the time of Conversion, and the holding period for Ordinary Shares so received generally will include the holding period of the Subordinated Debt Security Converted.

        Under certain circumstances, in connection with a Conversion, we may issue Ordinary Shares to the Holders' Nominee and those Ordinary Shares would be sold by the Holders' Nominee for the benefit of the applicable Subordinated U.S. Holder. Such a sale should be treated for U.S. federal income tax purposes as a sale of such Ordinary Shares by such Subordinated U.S. Holder. See "—Sale, Exchange, Redemption, Write-off or Other Disposition of the Subordinated Debt Securities."

        The material U.S. federal income tax considerations relating to the ownership and disposition of Ordinary Shares received in a Conversion would generally be the same as the material U.S. federal income tax considerations relating to the ownership and disposition of Subordinated Debt Securities described herein.

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        As noted above, it is possible that the Subordinated Debt Securities could be treated as indebtedness for U.S. federal income tax purposes. If the Subordinated Debt Securities were so treated, the material U.S. federal income tax considerations for Subordinated U.S. Holders would be materially different than as described herein. For example payments of interest (or accruals of redemption premium) on the Subordinated Debt Securities would be treated as ordinary interest income and not dividends or gain that could qualify for preferential rates or tax-free return of basis distributions and depending on the timing and calculation of interest payment dates Subordinated U.S. Holders may be required to accrue original issue discount, even if the Subordinated Debt Securities were not issued with more than de minimis redemption premium. Furthermore, in some circumstances, the Subordinated Debt Securities may be treated as "contingent payment debt instruments", in which case a Subordinated U.S. Holder might be required to accrue income on a Subordinated Debt Security in excess of stated interest and original issue discount, if any, and to treat gain recognized on the disposition of such Subordinated Debt Security as ordinary income, rather than capital gain. Moreover, it is unclear how a Conversion of a Subordinated Debt Security should be treated for U.S. federal income tax purposes, and each Subordinated U.S. Holder should consult its own tax advisor regarding the U.S. federal income tax consequences of a Conversion.

        In addition to regular U.S. federal income tax, certain Subordinated U.S. Holders that are individuals, estates or trusts are subject to a 3.8% tax on all or a portion of their "net investment income", which may include all or a portion of their income arising from a distribution with respect to a Subordinated Debt Security and net gain from the sale, exchange, redemption or other disposition of a Subordinated Debt Security.

        Backup withholding and information reporting requirements generally apply to interest and principal payments made to, and the proceeds of sales by, certain non-corporate Subordinated U.S. Holders. A Subordinated U.S. Holder not otherwise exempt from backup withholding generally can avoid backup withholding by providing a properly executed IRS Form W-9. Backup withholding is not an additional tax. Any amounts withheld under the backup withholding rules generally will be allowed as a refund or a credit against a Subordinated U.S. Holder's U.S. federal income tax liability, provided the required information is timely furnished by such Subordinated U.S. Holder to the IRS.

        A Subordinated U.S. Holder that participates in any "reportable transaction" (as defined in the Treasury Regulations) must attach to its U.S. federal income tax return a disclosure statement on IRS Form 8886. Each Subordinated U.S. Holder should consult its own tax advisor regarding the possible obligation to file IRS Form 8886 reporting foreign currency loss arising from the Subordinated Debt Securities or any amounts received with respect to the Subordinated Debt Securities.

        Individual Subordinated U.S. Holders (and certain U.S. entities specified in U.S. Treasury Department guidance) who, during any taxable year, hold any interest in any "specified foreign financial asset" generally will be required to file with their U.S. federal income tax returns certain information on IRS Form 8938 if the aggregate value of all such assets exceeds certain specified amounts. "Specified foreign financial asset" generally includes any financial account maintained with a non-U.S. financial institution and may also include the Subordinated Debt Securities if they are not

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held in an account maintained with a financial institution. Substantial penalties may be imposed, and the period of limitations on assessment and collection of U.S. federal income taxes may be extended, in the event of a failure to comply. Each Subordinated U.S. Holder should consult its own tax advisor regarding the possible application of this filing requirement.

FATCA Withholding

        It is possible that, in order to comply with FATCA, we (or, if the Subordinated Debt Securities or the Ordinary Shares are held through another financial institution, such other financial institution) may be required (pursuant to an agreement entered into with the United States or under applicable law (including pursuant to the terms of any applicable intergovernmental agreement entered into between the United States and any other jurisdiction)) (i) to request certain information from holders or beneficial owners of the Subordinated Debt Securities or the Ordinary Shares, which information may be provided to the IRS, and (ii) to withhold U.S. tax on some portion of payments made after December 31, 2018 with respect to the Subordinated Debt Securities, with respect to the issuance of any Ordinary Shares upon any Conversion or with respect to the Ordinary Shares if such information is not provided or if payments are made to certain foreign financial institutions that have not entered into a similar agreement with the United States (and are not otherwise required to comply with the FATCA regime under applicable law (including pursuant to the terms of any applicable intergovernmental agreement entered into between the United States and any other jurisdiction)).

        If we or any other person are required to withhold or deduct amounts arising under or in connection with FATCA from any payments made with respect to the Subordinated Debt Securities, with respect to the issuance of any Ordinary Shares upon any Conversion or with respect to the Ordinary Shares, holders and beneficial owners of the Subordinated Debt Securities, and the holders and beneficial owners of the Ordinary Shares issued upon any Conversion, will not be entitled to receive any gross up or other additional amounts on account of any such withholding or deduction. FATCA is complex and its application to the Subordinated Debt Securities, any Conversion and the Ordinary Shares remains uncertain. Each holder and beneficial owner should consult its own tax advisor regarding the application of FATCA to the Subordinated Debt Securities, any Conversion and the Ordinary Shares.


Australian Taxation

         THE FOLLOWING IS A SUMMARY OF THE AUSTRALIAN WITHHOLDING TAX TREATMENT UNDER THE INCOME TAX ASSESSMENT ACTS OF 1936 AND 1997 OF AUSTRALIA (TOGETHER, "THE AUSTRALIAN TAX ACT") AND THE TAXATION ADMINISTRATION ACT 1953 OF AUSTRALIA AT THE DATE OF THIS PROSPECTUS OF PAYMENTS OF INTEREST BY WESTPAC ON THE SUBORDINATED DEBT SECURITIES AND CERTAIN OTHER MATTERS RELEVANT TO HOLDERS OF SUBORDINATED DEBT SECURITIES ("HOLDERS").

         THE FOLLOWING SUMMARY IS NOT EXHAUSTIVE AND, IN PARTICULAR, DOES NOT DEAL WITH THE POSITION OF CERTAIN CLASSES OF HOLDERS (INCLUDING, WITHOUT LIMITATION, AUSTRALIAN RESIDENTS, NON-RESIDENTS THAT HOLD THE SUBORDINATED DEBT SECURITIES THROUGH A PERMANENT ESTABLISHMENT IN AUSTRALIA, DEALERS IN SECURITIES, OR CUSTODIANS OR THIRD PARTIES THAT HOLD THE SUBORDINATED DEBT SECURITIES ON BEHALF OF ANY PERSON). NOR DOES IT DEAL WITH SUBORDINATED DEBT SECURITIES ISSUED BY WESTPAC FROM A BRANCH OUTSIDE AUSTRALIA, OR WITH DUAL CURRENCY/PARTLY PAID OR INDEXED SUBORDINATED DEBT SECURITIES. IF SUCH SUBORDINATED DEBT SECURITIES ARE ISSUED, THEIR AUSTRALIAN TAXATION TREATMENT WILL BE SUMMARISED IN THE RELEVANT FINAL TERMS, APPLICABLE PROSPECTUS SUPPLEMENT OR TERM SHEET.

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         THE FOLLOWING SUMMARY IS A GENERAL GUIDE AND SHOULD BE TREATED WITH APPROPRIATE CAUTION. IT IS NOT INTENDED TO BE, NOR SHOULD IT BE CONSTRUED AS, LEGAL OR TAX ADVICE TO ANY PARTICULAR HOLDER. PROSPECTIVE HOLDERS SHOULD BE AWARE THAT THE PARTICULAR TERMS OF ISSUE OF ANY SERIES OF SUBORDINATED DEBT SECURITIES MAY AFFECT THE TAX TREATMENT OF THAT AND OTHER SERIES OF SUBORDINATED DEBT SECURITIES. HOLDERS SHOULD CONSULT THEIR PROFESSIONAL ADVISERS.

Australian interest withholding tax ("IWT")

        Generally, payments of principal and interest on the Subordinated Debt Securities made by Westpac to a Holder that is not a resident of Australia for Australian tax purposes (a "Non-Resident") (other than one deriving the interest in carrying on business in Australia at or through a permanent establishment in Australia) will not be subject to Australian taxes or duties other than IWT at a rate of 10% of the amount of an interest payment. However, IWT will not be payable if an exemption applies.

        For IWT purposes, "interest" is defined to include amounts in the nature of, or paid in substitution for, interest and certain other amounts. Any premium or issue discount would be interest for these purposes.

        There are also specific rules that can apply to treat a portion of the purchase price of the Subordinated Debt Securities as interest for IWT purposes when Subordinated Debt Securities that are originally issued at a discount, or with a maturity premium, or which do not pay interest at least annually, are sold by a Non-Resident (other than one holding the Subordinated Debt Securities as part of a business carried on by it at or through a permanent establishment in Australia) to:

        Interest on the Subordinated Debt Securities will be exempt from IWT if the requirements of section 128F are satisfied in relation to the Subordinated Debt Securities.

        Westpac proposes to issue the Subordinated Debt Securities in a manner which will satisfy the requirements of section 128F.

        The exemption from IWT available under section 128F is not intended to apply to related party loans. In particular, in order for that exemption to apply, Westpac must not have known or had reasonable grounds to suspect, at the time of their issue, that any of the Subordinated Debt Securities, or an interest in the Subordinated Debt Securities, were being or would later be acquired either directly or indirectly by an Offshore Associate of Westpac (other than one acting in the capacity of a dealer, manager or underwriter in relation to the placement of the Subordinated Debt Securities or in the capacity of a clearing house, custodian, funds manager or responsible entity of a registered scheme (as defined in the Corporations Act 2001 of Australia)).

        In addition, the exemption from IWT available under section 128F will not apply if, at the time of an interest payment in respect of the Subordinated Debt Securities, Westpac knew or had reasonable grounds to suspect that the recipient of the payment was an Offshore Associate of Westpac (other than one receiving the payment in the capacity of a clearing house, paying agent, custodian, funds manager or responsible entity of a registered scheme (as defined in the Corporations Act 2001 of Australia)).

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        For these purposes, an Offshore Associate means an associate (as defined in section 128F) of Westpac that is either:

Accordingly, if you are an Offshore Associate of Westpac, you should not acquire any of the Subordinated Debt Securities.

Payment of additional amounts because of a deduction or withholding in respect of IWT

        If Westpac is, at any time, compelled by law to deduct or withhold an amount in respect of IWT, then it must, subject to certain exceptions, pay such additional amounts as may be necessary in order to ensure that the aggregate amounts received by the Holders after such deduction or withholding equal the amounts that would have been received by them had no such deduction or withholding been required.

        It is noted that Westpac will not be obliged to pay such additional amounts on account of IWT which is payable by reason of the Holder being an associate (as defined in section 128F) of Westpac.

Withholding for failure to provide Tax File Number ("TFN") / Australian Business Number ("ABN ")

        Westpac is required to deduct and withhold tax from payments of interest at a rate that is currently 47% on the Subordinated Debt Securities unless a TFN or, in certain circumstances, an ABN has been provided to Westpac by the Holder, or the Holder has supplied Westpac with proof of some other relevant exemption.

        Provided that the requirements of section 128F have been satisfied with respect to the Subordinated Debt Securities, the TFN / ABN withholding rules will not apply to payments to Holders that are Non Residents and do not hold the Debt Securities in carrying on business in Australia at or through a permanent establishment in Australia.

        Westpac will not be obliged to pay additional amounts on account of taxes deducted or withheld on payments made in respect of Subordinated Debt Securities presented for payment by a Holder that could lawfully avoid (but has not so avoided) such deduction or withholding by complying with any statutory requirements or making a declaration of non-residence or other claim or filing for exemption.

Other Australian withholding taxes

        Under section 12-315 of Schedule 1 to the Taxation Administration Act 1953 of Australia ("TAA"), regulations may be made that require amounts to be withheld on account of tax liabilities of Non-Residents from certain payments that are made by an Australian entity to such Non-Residents.

        These rules do not currently apply to payments in relation to the Subordinated Debt Securities. However, the possible application of any future regulations to payments received by Non-Residents in respect of the Subordinated Debt Securities will need to be monitored.

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        Payments in respect of the Subordinated Debt Securities will be able to be made free and clear of the "supply withholding tax" imposed under section 12-190 of Schedule 1 to the TAA.

Other Australian tax matters

        Non-Residents that have never held their Subordinated Debt Securities in the course of carrying on business at or through a permanent establishment within Australia will not be subject to Australian income tax on gains realized by them on the sale or redemption of the Subordinated Debt Securities provided that such gains do not have an Australian source. A gain arising on the sale of Subordinated Debt Securities by a Non Resident Holder to another Non Resident where the Debt Securities are sold outside Australia and all negotiations are conducted, and documentation executed, outside Australia would not generally be regarded as having an Australian source.

        If a Conversion (including a partial Conversion) of the Subordinated Debt Securities occurs, the Australian tax consequences that may arise for holders are complex. Broadly, in certain circumstances, any gain or loss that may otherwise arise upon a Conversion of the Subordinated Debt Securities may be disregarded under the Australian Tax Act. There are also a range of tax consequences that may apply to holders of Ordinary Shares in acquiring, holding and disposing of Ordinary Shares. Holders should seek their own taxation advice in relation to the tax consequences if the Subordinated Debt Securities are converted into Ordinary Shares.

        The Commissioner of Taxation for Australia may give a direction under section 255 of the Australian Tax Act or section 260-5 of Schedule 1 to the TAA or any similar provision requiring Westpac to deduct or withhold from any payment to any other party (including any Holder) any amount in respect of tax payable by that other party. If Westpac is served with such a direction, Westpac intends to comply with that direction and make any deduction or withholding required by that direction.

        Neither the issue, nor the receipt, of the Subordinated Debt Securities will give rise to a liability for GST in Australia on the basis that the supply of the Debt Securities will comprise either an "input taxed financial supply" or (in the case of a supply to a Non-Resident Holder outside Australia and certain areas offshore of Australia, which together comprise the "indirect tax zone") a "GST-free supply". Furthermore, neither the payment of principal or interest by Westpac, nor the disposal or redemption of the Subordinated Debt Securities, would give rise to any GST liability in Australia.

        No Subordinated Debt Securities will be subject to death, estate or succession duties imposed by Australia, or by any political subdivision or authority therein having power to tax, if held at the time of death.

        No ad valorem stamp, issue, registration or similar taxes are payable in Australia on the issue or transfer of any Subordinated Debt Securities.

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PLAN OF DISTRIBUTION

        We may sell the Subordinated Debt Securities and Ordinary Shares from time to time in one or more transactions. We may sell securities pursuant to the registration statement to or through agents, underwriters, dealers or other third parties or directly to one or more purchasers or through a combination of any of these methods. In some cases, we or the dealers acting with us or on behalf of us may also purchase securities and reoffer them to the public. We may also offer and sell, or agree to deliver, securities pursuant to, or in connection with, any option agreement or other contractual arrangement.

        Agents whom we designate may solicit offers to purchase the securities.

        We may use an underwriter or underwriters in the offer or sale of the securities.

        We may use a dealer to sell the securities.

        We may solicit directly offers to purchase the securities, and we may directly sell the securities only to purchasers (a) in the United States that are reasonably believed to qualify as "qualified institutional buyers" as defined in Rule 144A of the Securities Act; and (b) outside of the United States, in accordance with (i) the selling restrictions set forth in the applicable prospectus supplement or term sheet, and (ii) all other applicable laws and regulations relating to or governing similar restrictions on the offer and sale of the securities in the jurisdictions in which such offers or sales occur. We will describe the terms of direct sales in the applicable prospectus supplement or term sheet.

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        We may engage in at the market offerings into an existing trading market in accordance with Rule 415(a)(4) of the Securities Act.

        We may indemnify agents, underwriters and dealers against certain liabilities, including liabilities under the Securities Act. Agents, underwriters and dealers, or their affiliates, may be customers of, engage in transactions with or perform services for us, in the ordinary course of business.

        We may authorize agents and underwriters to solicit offers by certain institutions to purchase the securities at the public offering price under delayed delivery contracts.

        Until the distribution of the securities is completed, rules of the SEC may limit the ability of underwriters and other participants in the offering to bid for and purchase the securities. As an exception to these rules, the underwriters in certain circumstances are permitted to engage in certain transactions outside Australia and on a market operated outside Australia that stabilize the price of the securities. Such transactions consist of bids or purchases for the purpose of pegging, fixing or maintaining the price of the securities. If the underwriters create a short position in the securities in connection with the offering by selling more securities than are set forth on the cover page of the applicable prospectus supplement or in the term sheet, the underwriters may reduce that short position by purchasing securities in the open market. The underwriters also may impose a penalty bid on certain underwriters. This means that if the underwriters purchase the securities in the open market to reduce the underwriters' short position or to stabilize the price of the securities, they may reclaim the amount of the selling concession from the underwriters who sold those securities as part of the offering. In general, purchases of a security for the purpose of stabilization or to reduce a short position could cause the price of the security to be higher than it might be in the absence of such purchases. Such stabilization, if commenced, may be discontinued at any time and must be brought to an end after a limited period. Such stabilization, if any, will be in compliance with all laws. The imposition of a penalty bid might also have an effect on the price of a security to the extent that it were to discourage resales of the security.

        Conflicts of Interest.     Westpac Banking Corporation is not a U.S. registered broker-dealer and, therefore, to the extent that it intends to effect any sales of offered securities in the United States, it will do so through Westpac Capital Markets LLC, a U.S. registered broker dealer, which we refer to as WCM. WCM is an affiliate of Westpac Banking Corporation. Offerings of securities will be conducted in compliance with Rule 5121 of the Financial Industry Regulatory Authority, Inc., which we refer to as FINRA, regarding a FINRA member firm's distribution of the securities of an affiliate and related conflicts of interest. In accordance with FINRA Rule 5121, WCM may not make sales of the offered securities to any discretionary accounts without the prior written approval of the customer.

        This prospectus, together with the relevant prospectus supplement and prospectus describing the terms of the specific series of securities being offered and sold, may be used by Westpac or WCM in connection with offers and sales of such securities in market-making transactions at negotiated prices related to prevailing market prices at the time of sale, or at other prices. Westpac or WCM may act as principal or agent in these transactions. Neither Westpac nor WCM is obligated to make a market in any of the securities referenced on the cover of this prospectus and either Westpac or WCM may discontinue any market-making at any time without notice, at its sole discretion.

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WHERE YOU CAN FIND MORE INFORMATION

        We file annual and other reports and other information with the SEC under the Securities Exchange Act of 1934, as amended, which we refer to as the Exchange Act. The SEC maintains an Internet site, http://www.sec.gov , which contains reports, proxy and information statements and other information regarding issuers that are subject to the SEC's reporting requirements.

        You may request a copy of any filings (excluding exhibits) referred to above and in "Incorporation of Information We File with the SEC" at no cost by contacting us at the following address: Westpac Banking Corporation, New York Branch, 575 Fifth Avenue, 39th Floor, New York, New York 10017-2422, Attention: Branch Manager. Telephone requests may be directed to such person at (212) 551-1800. Our website is available at www.westpac.com.au. Information contained in or accessible through the websites mentioned in this prospectus does not form part of this prospectus and all references in this prospectus to websites are inactive textual references and are for information only.

        This prospectus is part of a registration statement that we have filed with the SEC relating to the Subordinated Debt Securities to be offered. This prospectus does not contain all of the information we have included in the registration statement and the accompanying exhibits and schedules in accordance with the rules and regulations of the SEC, and we refer you to the omitted information. The statements this prospectus makes pertaining to the content of any contract, agreement or other document that is an exhibit to the registration statement necessarily are summaries of their material provisions and do not describe all exceptions and qualifications contained in those contracts, agreements or documents. You should read those contracts, agreements or documents for information that may be important to you. The registration statement, exhibits and schedules are available through the SEC's Internet site.


INCORPORATION OF INFORMATION WE FILE WITH THE SEC

        The SEC allows us to incorporate by reference the information we file with them, which means:

        We incorporate by reference the documents listed below which were filed with the SEC under the Exchange Act:

        We also incorporate by reference each of the following documents that we file with the SEC after the date of this prospectus until this offering is completed:

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        You should assume that the information appearing in this prospectus is accurate as of the date of this prospectus only. Our business, financial condition and results of operations may have changed since that date.


ENFORCEABILITY OF FOREIGN JUDGMENTS IN AUSTRALIA

        Westpac is a company incorporated in Australia under the Australian Corporations Act and registered in New South Wales, having its registered office at Level 18, Westpac Place, 275 Kent Street, Sydney, New South Wales 2000, Australia. In order to enforce a final, unsatisfied and conclusive judgment for the payment of a fixed or readily calculable sum of money rendered by any New York State or United States federal court having jurisdiction under its own domestic laws, and within whose jurisdiction Westpac was carrying on business at the time of commencement of the proceedings in which such judgment was rendered, with respect to any liability of Westpac with respect to any securities, it is necessary for the judgment creditor to bring separate proceedings as a new cause of action based on such judgment in the courts of competent jurisdiction of New South Wales or Australia against Westpac. Subject to the matters set forth under the heading "Description of the Subordinated Debt Securities—Events of Default", those courts could reasonably be expected in the circumstances to give conclusive effect to such judgment for the purpose of the proceedings. Westpac has expressly submitted to the jurisdiction of New York State and United States federal courts sitting in The City of New York for the purpose of any suit, action or proceedings arising out of the offering and sale of any securities. Westpac has appointed its New York branch, 575 Fifth Avenue, 39th Floor, New York, New York 10017-2422, Attention: Branch Manager, as its agent upon whom process may be served in any such action.

        All of the directors and executive officers of Westpac, and the independent accountants named herein, reside outside the United States. Substantially all or a substantial portion of the assets of all or many of such persons are located outside the United States. As a result, it may not be possible for holders of securities to effect service of process within the United States upon such persons. In addition, it may not be possible for holders of securities to enforce against such persons judgments obtained in United States courts predicated upon the civil liability provisions of federal securities laws of the United States. Westpac has been advised by its Australian counsel, King & Wood Mallesons, that there is doubt as to the enforceability in Australia, in original actions or in actions for enforcement of judgments of United States courts, of civil liabilities predicated upon the federal securities laws of the United States.


CURRENCY OF PRESENTATION AND EXCHANGE RATES

        We publish our consolidated financial statements in Australian Dollars.

        The following table sets forth, for Westpac's financial years indicated, the high, low, average and period-end noon buying rates in New York City for cable transfers of Australian Dollars as certified for

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customs purposes by the Federal Reserve Bank of New York, expressed in US dollars per A$1.00. Westpac's fiscal year ends on September 30 of each year.

Financial Year
  At Period End   Average Rate(1)   High   Low  

2014

    0.8737     0.9155     0.9705     0.8715  

2015

    0.7020     0.7781     0.8904     0.6917  

2016

    0.7667     0.7385     0.7817     0.6855  

2017

    0.7840     0.7624     0.8071     0.7174  

2018

    0.7238     0.7583     0.8105     0.7107  

2019(2)

    0.7199     0.7145     0.7233     0.7048  

(1)
The average of the noon buying rates on the last day of each month or portion thereof during the period.

(2)
Through November 2, 2018.

        Regulations in Australia restrict or prohibit payments, transactions and dealings with assets having a proscribed connection with certain countries or named individuals or entities subject to international sanctions or associated with terrorism.


VALIDITY OF SECURITIES

        Debevoise & Plimpton LLP, our New York counsel, will pass, on our behalf, on the validity of the Subordinated Debt Securities described in this prospectus with respect to New York law. King & Wood Mallesons, our Australian counsel, will pass, on our behalf, on the validity of the Subordinated Debt Securities and Ordinary Shares with respect to Australian law. Debevoise & Plimpton LLP may rely on the opinion of King & Wood Mallesons on matters of Australian law.


EXPERTS

        The financial statements and management's assessment of the effectiveness of internal control over financial reporting (which is included in Management's Report on Internal Control Over Financial Reporting), incorporated in this prospectus by reference to the Annual Report on Form 20-F of Westpac Banking Corporation for the year ended September 30, 2018, have been so incorporated in reliance on the report of PricewaterhouseCoopers, an independent registered public accounting firm, given on the authority of said firm as experts in auditing and accounting. PricewaterhouseCoopers is a member of Chartered Accountants Australia and New Zealand.


LIMITATION ON INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM'S LIABILITY

        The liability of PricewaterhouseCoopers (an Australian partnership which we refer to as PwC Australia) with respect to claims arising out of its audit report described under "Experts" above, is subject to the limitations set forth in the Professional Standards Act 1994 of New South Wales, Australia, which we refer to as the Professional Standards Act, and Chartered Accountants Australia and New Zealand (NSW) Scheme adopted by Chartered Accountants Australia and New Zealand on October 8, 2014 and approved by the New South Wales Professional Standards Council pursuant to the Professional Standards Act, which we refer to as the NSW Accountants Scheme. For matters occurring on or prior to October 7, 2014, the liability of PwC Australia may be subject to the limitations set forth in predecessor schemes. The current NSW Accountants Scheme expires on October 7, 2019 unless further extended or replaced.

        The Professional Standards Act and the NSW Accountants Scheme may limit the liability of PwC Australia for damages with respect to certain civil claims arising in, or governed by the laws of, New South Wales directly or vicariously from anything done or omitted to be done in the performance of its

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professional services for us, including, without limitation, its audits of our financial statements. The extent of the limitation depends on the timing of the relevant matter and is:

    in relation to matters occurring on or after October 8, 2013, a maximum liability for audit work of A$75 million; or

    in relation to matters occurring on or prior to October 7, 2013, to the lesser of (in the case of audit services) ten times the reasonable charge for the service provided and a maximum liability for audit work of A$75 million.

        The limitations do not apply to claims for breach of trust, fraud or dishonesty. In addition, there is equivalent professional standards legislation in place in other states and territories in Australia and amendments have been made to a number of Australian federal statutes to limit liability under those statutes to the same extent as liability is limited under state and territory laws by professional standards legislation. Accordingly, liability for acts or omissions by PwC Australia in Australian states or territories other than New South Wales may be limited in a manner similar to that in New South Wales. These limitations of liability may limit recovery upon the enforcement in Australian courts of any judgment under US or other foreign laws rendered against PwC Australia based on or related to its audit report on our financial statements. Substantially all of PwC Australia's assets are located in Australia. However, the Professional Standards Act and the NSW Accountants Scheme have not been subject to extensive judicial consideration and therefore how the limitation might be applied by the courts and the effect of the limitation remain untested in a number of respects including its effect in respect of the enforcement of foreign judgments.

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US$1,250,000,000

LOGO

Westpac Banking Corporation
(ABN 33 007 457 141)

4.110% Subordinated Notes due 2034

Subject, upon the occurrence of a Non-Viability Trigger Event, to Conversion or possible Write-off, as more fully described in the accompanying prospectus



PROSPECTUS SUPPLEMENT

July 16, 2019



Joint Book-Running Managers

BofA Merrill Lynch   Citigroup   HSBC   J.P. Morgan   Westpac Banking Corporation

Co-Managers

RBC Capital Markets   TD Securities