AU Small Finance Bank's return on assets has stalled below its 1.8% goal

AU Small Finance Bank earned ₹858 crore in the September 2026 quarter, 53% more than a year earlier. For a lender that funds loans to small businesses, vehicle buyers and households with deposits, the measure that says whether such growth is worth having is return on assets: profit as a share of everything on the balance sheet. That ratio has stopped rising. It was 1.7% in the quarter before and 1.7% for the half-year, short of the 1.8% the bank set as its aim for the current financial year.

The profit jump itself rests mostly on the business earning more. Calculated from the reported figures, lower provisions for bad loans account for 28.7% of the rise in pre-tax profit from a year earlier; the rest came from income growing faster than costs. The bank said the smaller provision charge reflected its unsecured lending returning to normal, which is a gain that does not compound in the same way.

The ratio is flat because the balance sheet is now growing about as fast as profit: profit rose 7.8% from the quarter before, calculated from the reported figures, while deposits and loans grew at about the same pace. Over the year, total assets grew about half as fast as profit, which is why the ratio is higher than a year ago. Between the September and March quarters return on assets climbed to a peak of 1.8%. Management described that peak quarter, the one to March, as seasonally strong when it reported it.

The target has a record. In July 2025 the bank said it reiterated its guidance of 1.8% for this financial year; in April it said its goal was to maintain or achieve that level over the full year. On the latest call an analyst cited that guidance and asked how returns would hold up. Management answered with offsets it expects over several years, among them foreign exchange, credit cards, trade finance and lower costs relative to assets, and did not repeat the figure. That is not a withdrawal. It does change what the arithmetic asks: on the bank's rounded figures, a 1.8% year needs about 1.9% in the second half, above each of the five periods in the chart.

The forces that carried the ratio up are giving less. Net interest margin, the gap between what the bank earns on loans and investments and what it pays for funds, was 5.8% last quarter, 16 basis points below its peak two quarters earlier. The bank attributes most of the latest fall to holding more liquid investments, and it ties the path of its funding costs to conditions in the market: "So going forward, it will be more a function of liquidity and deposit competition, which will determine the trajectory of cost of funds." Credit cost for the half-year is running below the guidance of around 90 basis points. That leaves room for bad loans to rise without breaking the guidance; it is a cushion rather than a fresh source of higher returns.

Lower costs relative to assets are the other route. Operating expenses grew 26% on a year earlier as the bank added branches, staff and technology, but the bank put its cost-to-assets ratio, excluding guarantee premiums, at 3.9% last quarter, lower than in the quarter before and under the below-4% level it guided for in April 2026. Since July it has described its outlook only as an improvement over the full year. Fee income has a new problem too: management said a regulatory consultation paper on insurance fees would bring "some headwind" whose final shape is still open.

There are reasons the goal could still be met. Management has called its fourth quarter, which falls in the second half, seasonally strong, credit cost has room under its guidance, and profit growth built mostly on operations is a sounder base than a one-time gain. What this call changed is narrower. A ratio that rose for two quarters has been flat for two more, and when asked about returns, the bank described the levers rather than the number.