Find the tax rate from a receipt

If you know the price before tax and the total you paid, the difference is the sales tax. Divide it by the price to get the rate.

Sales tax = Total − Price before tax
Tax rate = Sales tax ÷ Price before tax

For example, a $100.00 item with a $108.25 total has $8.25 in tax, and $8.25 ÷ $100.00 = 8.25%.

Find the price before tax from a total

If you only know the total and the tax rate, divide the total by one plus the rate. Use the Add / remove tax tab and choose Remove tax.

Price before tax = Total ÷ (1 + Tax rate)

For example, a $108.25 total at 8.25% is $108.25 ÷ 1.0825 = $100.00 before tax.