Investor Presentaiton

Home Lending Serviceability Tighter serviceability and underwriting standards underpinning performance Owner occupier serviceability assessment rate and floor Interest rate buffers (%) 7.20% Min. Floor Rate 6.44% 5.64% 5.59% 5.64% 2.20% 2.50% 2.50% 3.00% 4.24% 3.14% 3.09% 2.64% Jun 19 Jun 20 Jun 21 Base Rate (OO P&I) • 9.14% 8.79% 3.00% 3.00% 6.14% 5.79% Jun 22 Jun 23 Dec 23 Buffer 5.00% Min. Floor Rate Min. issuance rate Serviceability Criteria • • • • • Servicing Criteria based on Net Disposable Income (NDI) Living expense data captured at application and compared to the Household Expenditure Measure (HEM) by Income Groups, with higher of declared v HEM used. HEM reviewed quarterly Serviceability Policy set at NDI ≥ 1.0 Great Southern Bank Servicing Rate uses the home loan product interest rate and adds a buffer of 3.0%. The minimum floor interest rate is 5.0%. Sensitised interest rates used for both new and ongoing home loan liabilities All loans assessed as principal and interest (P&I) over the remaining P&I loan term. For interest-only loans the assessment uses the P&I revert rate. Effective August 2023, the Bank has enabled gearing within its serviceability methodology for investment property income. Income Verification Valuations Loan to Value Ratio (LVR) Self-Employed Verification ranges from Pay Slips, confirmed ITR (Income Tax Return) Summaries, direct Salary Credit or employer letter/contract and employer phone calls Rental income shading is 90% supported by minimum rental expense floor of 15%. Shift allowance servicing rate is 100%. Other work allowances servicing rate is 80%. Overtime and commission servicing rate is 100% for essential workers, otherwise 80%. Effective 1 July 2023 we commenced with a new Valuation product across properties in QLD called SMARTval with the intent to deploy it as an alternative valuation method across the portfolio once we are comfortable with its abilities. An independent valuation of security is undertaken for all mortgage loans. The type of valuation conducted is driven by systematic rulesets within a valuation strategy engine that considers property type, exposure amounts, model risk levels and LVR amongst other factors. The key valuations types used in addition to Formal valuations are Desktop Valuations, and AVM's (Automated Valuation Models). All formal valuation inspections are completed by a registered valuer and are completed in accordance with Australian Property Institute requirements and guidelines. Maximum LVR on Standard Security in line with market at 80% without LMI, and 95% with LMI or 98% for Family Home Guarantee Loans Various restrictions in place for maximum LVR for Rural Residential, High Density and Other Restricted security Lenders Mortgage Insurance is underwritten by Helia Genuine Savings required for LVR > 90% All self-employed applications manually assessed by Credit Assessment Income verification requires last 2 years full financial information Use lower of last year's income or average of last 2 years income as the default assessment method. 34/Investor Presentation

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