Company: WEBNF
Filing Date: 2025-06-26
Form Type: 424B5
Source: 0001104659-25-062718
Chunk: 114

Company: WESTPAC BANKING CORP
Filing Date: 2025-06-26
Form: 424B5
Chunk 114
---
6219 | ​ | ​ |
| 2024           | ​ | ​ | ​            | ​ | 0.6934 | ​ | ​ | ​ | ​              | ​ | 0.6620 | ​ | ​ | ​ | ​    | ​ | 0.6934 | ​ | ​ | ​ | ​   | ​ | 0.6290 | ​ | ​ |
| 2025(2)        | ​ | ​ | ​            | ​ | 0.6566 | ​ | ​ | ​ | ​              | ​ | 0.6695 | ​ | ​ | ​ | ​    | ​ | 0.6895 | ​ | ​ | ​ | ​   | ​ | 0.6550 | ​ | ​ |

(1) The average of the noon buying rates on the last day of each month or portion thereof during the period. (2) Through November 1, 2024. 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 or money laundering.

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### VALIDITY OF SECURITIES
Debevoise & Plimpton LLP, our New York counsel, will pass, on our behalf, on the validity of the Senior 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 Senior Debt Securities 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, 2024have 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.

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<div align='center'>**LIMITATION ON INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM’S LIABILITY**</div>

The liability of PricewaterhouseCoopers (an Australian partnership which we refer