Margins Tighten as Deposit Costs Rise

Indian banks delivered solid Q4 FY26 results, driven by strong loan growth. However, the credit-deposit ratio hit a record 83% by mid-March 2026, as loan expansion (around 13.8% year-on-year) outpaced deposit growth (10.8%). This funding gap means banks must use costlier methods to secure money, directly impacting their Net Interest Margins (NIMs). Analysts expect NIMs to stay flat or dip slightly for many banks due to these rising funding costs.

The Deposit Competition Battle

The core challenge stems from a long-term trend of household savings moving away from traditional bank accounts. By March 2025, equity and mutual funds held 23% of household financial assets, up from 15.7% in March 2019, while bank deposits declined. This shift has reduced low-cost Current Account and Savings Account (CASA) balances, now at a two-year low. Banks are increasingly turning to more expensive term deposits and wholesale funding like Certificates of Deposit (CDs) to cover the shortfall, pushing up overall borrowing costs.

Bank Valuations Face Scrutiny

Valuations vary among major banks, with State Bank of India trading at a P/E of about 11.59, HDFC Bank at 16.44, ICICI Bank at 16.31, and Axis Bank at 16.21. Kotak Mahindra Bank trades significantly higher at approximately 32.23. Analysts predict a mixed NIM outlook: HDFC Bank and ICICI Bank are likely to report flat margins, while Axis Bank and Kotak Mahindra Bank may see a decline. Public sector banks are expected to hold steady, but some mid-sized lenders like AU, Bandhan, and IDFC could see margin expansion. South Indian Bank's NIM compression in April 2025, even with a stock rebound, highlights ongoing margin pressures.

Underlying Risks to Bank Profitability

Despite overall stability, significant challenges face the sector's longer-term outlook. The long-term savings shift away from bank deposits is a core problem, reducing access to cheap CASA funds. This forces greater reliance on costly wholesale funding, keeping NIMs under pressure. Furthermore, geopolitical tensions add economic uncertainty that could affect loan growth and asset quality, particularly for small and medium-sized businesses. While banks like SBI look well-valued, others with higher multiples face questions about whether their prices fully reflect these margin pressures and new risks. Mixed analyst ratings for some bank stocks, including 'Reduce' or 'Hold' recommendations, echo these concerns.

The Road Ahead for Indian Banks

Looking ahead, investors will closely watch management discussions on NIM trends for the first half of FY27 and how banks plan to attract deposits. Loan growth is expected to continue, supported by consumer spending, but profitable expansion hinges on managing higher funding costs. Changes in regulation, like the potential ECL framework, also add to future considerations. Analysts note that a 125 basis point RBI rate cut in December 2025 has had a delayed effect on lending rates compared to deposit costs, creating a challenge for bank interest rate spreads.