CBA Shares Fall 9.93% in August as Valuation Reset Overshadows Record Profit

Commonwealth Bank of Australia shares (ASX:CBA) fell back 9.93% in August, as record annual profits collided with regulatory card-fee changes and renewed interest-rate uncertainty. A 3.19% bounce across the final two trading sessions of the month pulled the stock back toward year-to-date breakeven, but the drawdown has left sentiment around the country’s largest bank notably fragile.

The CBA share price peaked at A$180.72 in early August ahead of its full-year result, before sliding into the mid-A$150s in the weeks that followed. Factoring back the A$2.70 final dividend, the dividend-adjusted weekly return was closer to minus 3.9% post earnings.

Driving CBA Shares

The sell-off was triggered less by earnings disappointment than by what the earnings revealed about expectations already embedded in the price. CBA reported a record annual cash net profit after tax of approximately A$10.98 billion for FY26, up roughly 7% year on year, with operating income rising about 6% and return on equity at 14.0%. Growth across the bank’s five main domestic products matched or exceeded system levels, reinforcing the operational quality of the franchise.

The problem was the multiple. CBA was trading at 25.42 times trailing earnings, about 34% above the roughly 18.92 times average of its three main competitors, while its 3.04% dividend yield sat about 31% below their 4.40% average.

Credit indicators added to the caution: home-loan arrears rose to 0.73% and personal-loan arrears to 1.72%, largely attributed to cost-of-living pressures, though the bank retains a provision buffer of around A$2.7 billion. The CET1 ratio of 12.0% remains comfortably above the 10.25% regulatory minimum, but only A$300 million of an intended A$1 billion buyback was executed before the program expired without renewal.

August also brought a regulatory headwind when the Reserve Bank of Australia’s credit-card reforms will cut the consumer-credit interchange cap from 0.80% to 0.30%, with the average consumer-credit interchange rate of about 0.47% also capped at 0.30%, a reduction of at least 36%. Debit-card fixed-fee caps will fall as well, with sector-wide issuer revenue estimated to decline by about A$660 million per year. CBA has responded by expanding its loyalty offering into CommBank Yello, a whole-of-bank rewards program covering roughly nine million customers across home loans, deposits, insurance and cards. Management has argued that even if the entire A$660 million sector-wide impact were allocated to CBA, an unrealistic scenario, it would represent only about 2.2% of FY26 operating income and around 6% of cash profit.

Operating trends are also cooling. Home-loan applications fell about 15% after the federal budget in May, with investment-property lending softening more than owner-occupier demand, raising questions about loan-book growth if competition intensifies for a smaller pool of new borrowers.

What Lay Ahead?

Analyst sentiment remains strikingly negative. The consensus rating across 14 analysts tracked is Strong Sell, with no Buy or Hold calls, and an average price target of A$125.21 implying roughly 20% downside from here. The debate is framed less around earnings than around whether CBA can grow into its premium valuation, or whether the multiple compresses toward peer levels. Despite having fallen 5% over the past 12 months, a glance at the five year chart shows CBA shares up 57%, a mighty increase that has caused some of the valuation concern over the recent period.

The macro backdrop is likely to be decisive in what happens from here. Hotter-than-expected domestic inflation has revived discussion of further policy tightening, while hawkish messaging from Jackson Hole has reinforced a higher-for-longer rate narrative, a combination that raises discount rates for equity valuations and increases scrutiny of rate-sensitive names such as banks.

Key swing factors into FY27 include the rate path, lending growth, net interest margins, credit quality and capital management. Technically, the mid-A$150s emerged as a support zone during the late-month bounce, and with the shares now cooling from oversold conditions, yet firmly below the 200 day SMA, there may be those who continue to see some value here. The market cap gap to ASX 200 leader BHP shares has widened to A$69bn over the past month, as the valuation between the two narrowed on a P/E basis. Plenty to keep both bulls and bears interested here into the final third of 2026.

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