<ul data-eligibleForWebStory="false">HDFC Bank's Q1 loan book grew nearly 7% while deposits increased over 16% year-on-year.Gross advances reached Rs 26,530 crore, with deposits rising to Rs 27,640 crore.Current account savings account (CASA) deposits saw an 8.5% increase to Rs 9,370 crore, a significant source of low-cost funding for banks.HDFC Bank's loan-to-deposit ratio improved slightly from 97.3% to 96% quarter-on-quarter due to robust deposit growth.