"While the draft norms hold the potential to improve the efficiency of monetary policy transmission, banks would have to bear the cost in the form of lower net interest margins (NIMs) till the time their deposits get re-priced to lower levels (on a par with the marginal cost of funds) in a declining interest rate scenario," ICRA said in a report here.
According to RBI data for 2014, about 41 per cent of term deposits have less than one year residual maturity, while the proportion of base rate linked advances could be as high as 80 per cent of total advances.
According to Icra, assuming a 75 basis point decline in interest rate, annual interest income loss to banks (on lending operations) could be in the range of Rs 15,000 to Rs 22,000 crore.
The draft guidelines seems to follow RBI's concern that despite a 75 basis points cut in policy rate during the current fiscal, banks (on an average) lowered their base rates by merely 25-30 basis points.