because the slave owners would make alot of money from farming.
The BA II PLUS, our most popular financial calculator for business professionals and students. Finance and science capabilities include: 1  Time-Value-of-Money calculations. 2  Amortization schedules.3  Cash-flow analysis, NPV and IRR.4  Depreciation with four different methodologies.he BA II PLUS, our most popular financial calculator for business professionals and students. Finance and science capabilities include: 1  Time-Value-of-Money calculations. 2  Amortization schedules.
Net amount + flat tax amounts / (100% - total percent of taxes) = Gross. Example. Assume the desired net pay amount is $200, and you wish to withhold social security, Medicare and $100 for federal income tax (FIT): 1  Total the tax percentages: Social security 6.2% + Medicare 1.45% = 7.65%.2  Subtract the total from 100%: 100-7.65 = 92.35. Add $100 from FIT to the net: $100 + $200 = $300. 2  Divide the new net amount by the amount in step 3: 300 / .9235 = 324.85. 3  The gross amount to be used is $324.85. 4  The net amount will be $200 after withholding social security, Medicare, and $100 for FIT.