Any how DA is calculated complete based on arithmatical calculation.AICPIN released by Labour bureau is required to calculate DA.Labour bureau already released the data for Jauary,February,March,April,May and June that is 198,199,201,205,206,208 respectively.
The formula for calculating da is
DEARNESS ALLOWANCE=(avg of AICPIN for past 12 months-115.76)*100/115.76
DEARNESS ALLLOWANCE JULY 2012 IS 72%
The official announcement by the Government for eligible DA JULY 2012 may be expected in SEPTEMBER 2012.