Base Index revised on 1.1.2007 – 126.33
Calculation
Average CPI – Base Index – 335.33 – 126.33 = 209
Expected IDA – 209 / 126.33 x 100 =165.4%
IDA on July – 159.9%
Net increase – 5.5%
Calculation IDA w.e.f 1.10.2020.
Consumer price Index (CPI) June 2020 – 332
Consumer price Index (CPI) July 2020 – 336
Consumer price Index (CPI) August 2020 – 338
Average CPI – (332+336+338) / 3 = 335.33