01/10/2011: IDA increase from 01/10/2011 is 4.8 %

Base Index w.e.f.            01.01.2007 is 126.33

 CPI(IW) for  June 2011 is 189, for July  2011 is 193 and for  Aug  2011 is 194 hence
Average CPI(IW)=(189+193+194)/3=192         

(CPI (IW)   Consumer Price Index for Industrial workers)

Hence New IDA Rate = ((192-126.33)*100)/126.33 = 51.98 i.e. approximately      52 %  hence this is very much correct rate of expected IDA w.e.f. 01.10.2011.

Present IDA rate is 47.2% with effect from 1st  April 2011, and July 2011

Average CPI(IW) is to be taken for previous 3 months i.e. for IDA w.e.f. 01.10.2011 CPI(IW) for June. 2011, July . 2011 and Aug. 2011 are to be taken