Investor Presentaiton

Margins. Net interest margin (% and bps) 2Q21 NIM excl. Treasury, Markets & Notables: 1.97% Month of Mar-21 NIM excl. Treasury, Markets & Notables: 1.96% 2.03 1bp 2.04 (4bps) 6bps 2bps (2bps) 1bp 0.13 0.13 2.07 2bps 2.09 0.13 Treasury & Markets 0.13 impact on NIM 1.90 1.91 Up 3bps 1.94 1.96 ■NIM excl. Treasury & Markets 2H20 Notable items 2H20 excl. Loans notable items other Customer Funding Capital & Liquidity Treasury & 1H21 excl. deposits Markets notable items Notable¹ items 1H21 TD portfolio cost over benchmark 2 (%) Australian deposits 3 ($bn) Balances by interest rate (bps) 1.00% 0.75% 0.50% 257 Tractor rate (%) 4 • 1H21 tractor impact (3bps) 3% • 2% Similar impact expected in 2H21 Capital on 1yr hedge Capital: $54bn Deposits: $61bn 1% 0.25% 76 17 Tractor 60 11 3 year swap rate (spot) 0.00% ≤25bps Mar-18 Mar-19 Mar-20 Mar-21 26 51 76 ≤50bps ≤75bps ≤100bps 101bps+ 0% Mar-18 1 year swap rate (spot) Mar-19 Mar-20 Mar-21 1 References to notable items include; estimated customer refunds. 2 Benchmark is based on market rates with terms consistent with the duration of the term deposits. 3 Excludes mortgage offset balances. 4 Tractor is the blended average rate earned on hedged capital and low rate deposits. 17 Westpac Group 2021 Interim Results Presentation & Investor Discussion Pack Westpac GROUP

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