06 July 2012
You have to arrive at the Qualifying Amount (QA), first, which is 10% of the Adjusted Gross Total Income (AGTI). . AGTI means GTI less Deductions Under Chapter VIA, (Except U/s 80G). There must be 80C, 80D like Deductions. Deduct these from the Gross Total Income (GTI) to get AGTI. . Deduction U/s 80G is allowable @50% of qualifying amount (QA-As referred in First Para). .
07 July 2012
details are not fully disclosed. for 80G deduction you need to get qualified amount. for this you need to deduct all other deductions of Chapter VI-A. Then 10% of this amount will be max amount of 80G deduction. in your case it will be 50% also. So please clear all the facts to get proper answer