Formula to calculate sales tax backwards from total. In this formula, we assume that you already know the sales tax percentage. Divide your sales receipts by 1 plus the sales tax .
How I Back Calculate Sales Tax
Back Out Tax Amount · Run the Sales by Department report. · To get the pre-tax sales amount, divide each department's net sales by 1 plus that department's tax. Back Out Tax Amount. Run the Sales by Department report. To get the pre-tax sales amount, divide each department's net sales by 1 plus that department's tax rate. Tax rate for the ‘Food’ .
If your total receipt amount was $, and you paid percent in sales tax, you'd simply plug those numbers into our calculator to find out that your. Jun 30, · How to Calculate Sales Tax Backwards From Total. Subtract the Tax Paid From the Total. Divide the Tax Paid by the Pre-Tax Price. Convert the Tax Rate to a Percentage. .