Commonwealth Bank of Australia’s Common Equity Tier 1 capital ratio stands at 12.0% as at 30 June 2026, maintaining a substantial buffer above APRA’s minimum requirement of 10.25%. The ratio declined 30 basis points from both December 2025 and June 2025, reflecting a balance between capital generation from earnings and elevated risk-weighted asset growth over the first half of the year.
The key driver of the CET1 decline was a 76 basis point increase in total risk-weighted assets to $522.4 billion, driven primarily by $13.6 billion of credit risk RWA growth and a $6.5 billion increase in interest rate risk in the banking book. Credit quality improvements of $2.1 billion partially offset these movements, alongside foreign currency headwinds of $2.9 billion. The credit RWA expansion reflects volume growth of $17.8 billion, predominantly in commercial lending and domestic residential mortgages, demonstrating CBA’s continued balance sheet expansion.
From a regulatory perspective, CBA remains in a strong capital position. The Tier 1 ratio of 13.5% and total capital ratio of 20.8% both sit comfortably above minimum regulatory requirements of 11.75% and 18.25% respectively. The leverage ratio of 4.6% exceeds the current 3.5% minimum, though investors should note this will become a CET1-based metric from January 2027, with the minimum requirement reducing to 3.25%.
Liquidity metrics demonstrate robust funding conditions. The liquidity coverage ratio averaged 132% during the June quarter, well above APRA’s 100% minimum, while the net stable funding ratio of 115% indicates the bank maintains adequate longer-term funding to support its asset base even under stressed conditions.
For investors, several developments warrant attention. The capital management framework remains balanced, with the bank able to grow its lending portfolio while sustaining capital ratios above regulatory minimums. The dividend reinvestment plan participation of 13.5% in respect of the interim dividend, satisfied through on-market share purchases, demonstrates an active approach to capital management alongside earnings retention.
Upcoming regulatory changes from January 2027 will reshape the capital framework. APRA’s decision to phase out Additional Tier 1 capital instruments means CBA will need to increase CET1 and Tier 2 capital holdings by 0.25% and 1.25% respectively, with the total CET1 requirement moving to 10.50%. These changes should be manageable given current positioning but will influence future capital allocation decisions.
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Become an AR or CARThe marked growth in IRRBB RWA reflects higher swap rates and deposit and equity hedge settings calibrated for earnings stability through a rate cycle. This positioning suggests management expects continued interest rate volatility and is hedging accordingly. Investors should monitor how ongoing inflation pressures and regulatory changes influence future capital management strategy and dividend policy.
View the full ASX announcement (PDF)
About Commonwealth Bank of Australia (ASX: CBA)
Commonwealth Bank of Australia is the largest bank in Australia by market capitalisation, providing retail, business, and institutional banking services. It serves millions of customers across Australia and New Zealand.
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