The Thrissur, Kerala-headquartered bank also cut its base rate by 0.75 per cent to 9.50 per cent, it said in a filing to the exchanges.
The move is in sync with an industry-wide trend of lending rates coming down following heavy rate cuts by the RBI to boost the economy amid the COVID-19 pandemic.
CSB Bank cut its overnight MCLR by 0.90 per cent to 8.20 per cent, but left the one-year MCLR unchanged at 9.50 per cent.
Most of the retail and longer-tenor consumer loans by banks are linked to the one-year MCLR.
It also cut the one-month MCLR by 0.80 per cent, three-month MCLR by 0.70 per cent and six-month MCLR by 0.50 per cent.