India's top private sector banks entered the second quarter with a familiar challenge: protecting lending spreads in a cooling rate environment. Instead, net interest margins weakened as funding costs rose on the back of foreign currency non-resident deposits, or FCNR deposits, which have become a more expensive source of liability for lenders seeking to attract and retain dollar-linked balances.
Margin Pressure Builds
The latest quarterly trend underscores how sensitive bank profitability remains to the composition of deposits, not just their volume. FCNR deposits, which allow non-resident Indians to place foreign currency funds with domestic banks, are typically used by lenders as a stable source of long-term funding. But they also carry a built-in cost structure that can become burdensome when banks rely on them heavily or when the interest-rate differential turns less favourable.
Analysts tracking the sector said the leveraged nature of these deposits amplified the hit to margins. In practical terms, banks may use these funds to support lending and treasury operations, but the cost of maintaining them can outpace the yield earned on assets if loan repricing and deposit repricing move at different speeds. That mismatch appeared to weigh on second-quarter profitability across several leading private lenders.
The pressure came at a time when banks were already navigating a softer rate cycle. As interest rates declined, assets such as loans and securities repriced faster than some liabilities, narrowing the spread between what banks earn and what they pay. For lenders that had built up a meaningful FCNR book, the result was a sharper squeeze on net interest margins than the market had anticipated.
Funding Costs Outpace Yields
The core issue is not simply that FCNR deposits are expensive, but that they can become disproportionately costly when banks compete aggressively for foreign currency funds. These deposits are often priced with reference to global benchmarks and hedged through the banking system, adding layers of cost that can erode the economics of lending. When domestic lending yields soften at the same time, the impact on net interest income becomes more visible.
This dynamic is especially relevant for private banks, which have historically relied on a mix of retail deposits, wholesale borrowings and foreign currency liabilities to fund growth. In a strong credit cycle, that model can support rapid expansion. But in a period of easing rates, the same funding mix can compress spreads unless banks are able to reprice deposits downward quickly or shift toward lower-cost current and savings accounts.
The second-quarter margin decline also reflects a broader structural tension in Indian banking. Deposit competition remains intense, and banks have spent much of the past year trying to secure stable liabilities while managing loan growth. FCNR deposits, while useful for balance-sheet diversification, can distort funding costs if they rise too quickly or if banks depend on them to bridge liquidity needs.
What Banks Watch Next
For investors, the key question is whether the margin pressure is temporary or the start of a more persistent earnings reset. Much will depend on how quickly banks can reprice liabilities, how loan growth evolves in the second half of the year, and whether the rate environment continues to soften. If asset yields fall faster than funding costs, margins may remain under pressure even if credit demand stays healthy.
The latest quarter also highlights the importance of deposit mix in assessing bank quality. A lender with strong retail franchise and a high share of low-cost deposits is better positioned to absorb rate volatility than one leaning more heavily on costlier wholesale or foreign currency funding. That distinction is likely to matter more as the industry moves through a phase of slower monetary transmission and tighter competition for stable deposits.
Analysts said the earnings impact from FCNR deposits should be viewed alongside broader balance-sheet management decisions. Banks that actively hedge foreign currency liabilities and maintain disciplined pricing may be able to limit the damage. Others could see continued pressure on net interest margins if they remain reliant on leveraged foreign currency funding while asset yields continue to adjust downward.
For now, the message from the second quarter is clear: even the strongest private banks are not immune to funding-cost volatility. In a lower-rate environment, the quality and pricing of liabilities may matter as much as loan growth in determining who can defend profitability and who cannot.