"We expect yearly headline WPI inflation to fall rapidly below 1 per cent in March... And enter a period of deflation beginning in April, which could last till end-2009 due to not only continuing demand destruction but also a sharp step-up in the base," it said in a research report.
Inflation fell to over a six-year low of 2.43 per cent for the week ended February 28 against 3.03 per cent in the previous week mainly on account of a fall in the prices of manufactured products.
It further said that in a deflationary environment, those sectors with a high proportion of variable costs are likely to benefit from falling input prices.
In 2010, however, it expects inflation to come back due to both a gradual pick-up in demand, and conversely, a low base from 2009.
It further said that the Reserve Bank could slash cash reserve ratio (CRR) for banks by 150 basis points by mid-2009 to provide liquidity into the system.