ABCDE
1Example Budget
2Budget $ 100,000
3
Fixed CostsAdditional PercentAdded AmountFinal Budget
4Rent $ 26,500 0%$0 $ 26,500
5Wages 36,800 30% 5,310.00 42,110
6Cost of Goods Sold 12,000 0%0 12,000
7Travel 5,000 50% 8,850.00 13,850
8Training 2,000 40% 7,080.00 9,080
9Total $ 82,300 120%$21,240 $103,540
10Remainder $ 17,700

This table was created by a free Excel macro written by Charles Balch.
Here's the code. It is care ware - it's yours for free if do something nice for anyone (anyone includes you).