HDFC Bank has raised deposit rates on certain maturities by 50-100 basis points (bps), hinting it's either under liquidity stress or is seeing very strong credit growth or being hit badly on deposits by low-Casa rivals offering higher rates, reports DNA. The bank said it will offer 7 per cent on 61-90 day deposits, 7.5 per cent for 91 days to six months, and 9.25 per cent on 2, 3- and 5-year deposits.The rates are applicable immediately.