Just make a small change in Hemanth's formula. Since you want the amount to be Rs. 780/- if the basic is above 6500/-, replace the zero in the formula with 780/- and check. The IF statement will check the basic amount—if it is less than or equal to 6500/-, then it will produce 12% of it in the cell where the formula is keyed in. Otherwise, (i.e., when the basic is above Rs. 6500/-), it will simply fetch 780/-.
Regards,
Raja C S N
Sr. Trainer / Consultant / Content Creator, Chennai.
BTW, if you are in Chennai, you can get my personal services on all your Excel-related queries at a reasonable cost, if you are interested.