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Exhibit 15.1

FINANCIAL REPORT

EXHIBITS INDEX

STRATEGIC
REVIEW

PERFORMANCE
REVIEW

EXHIBIT 15.4

ADDITIONAL
INFORMATION

145

EXHIBIT 15.1

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in the registration statements (Nos. 333-283007 and 333-283008) on Form F-3 of our report dated 2 November 2025, with respect to the consolidated financial statements of Westpac Banking Corporation and the effectiveness of internal control over financial reporting.

/s/ KPMG

Sydney, Australia

4 November 2025