Investor Presentaiton

Cost synergies expected to be substantial ■BankWest's cost-to-income ratio is 67.6% versus 48.9%² for CBA Annual pre-tax cost synergies estimated to be at 20-25% of BankWest's cost base ■ Synergy opportunities: Streamlined support functions Merged technology platform (aligned with Core Banking) Review of BankWest east coast retail expansion strategy Estimated integration costs are ~1.5 times the first year of fully maintainable cost synergies 1. For the financial year ended 31 December 2007. 2. For the financial year ended 30 June 2008. 14 Determined to be different

View entire presentation