HDFC Bank's Net Interest Margin at 4.3 percent was also the highest in 10 quarters.
Most brokerages tracking HDFC Bank have maintained their estimates on India's largest private lender after the bank's December quarter results were a beat on expectations.
BofA Securities has maintained its buy rating on the stock with a price target of Rs 2,000. The brokerage said that the bank's branch expansion is on the fast track in the near term and that the catch up in Net Interest Margin will be gradual.
HDFC Bank's net interest income or core income grew at its best pace in 14 quarters during the December period.