Calculate sales tax and total price instantly. All US state tax rates included. Works both ways!
Our sales tax calculator works in two modes: add tax to a pre-tax price, or remove tax from a total price. The formula is: Tax Amount = Price × Tax Rate ÷ 100. Total = Price + Tax.
Sales tax varies by state in the US. Five states have no sales tax: Alaska, Delaware, Montana, New Hampshire, and Oregon. The highest rates are in California (7.25%), Indiana, Mississippi, Rhode Island, and Tennessee (all 7%).
To find the pre-tax price: Pre-tax Price = Total ÷ (1 + Tax Rate ÷ 100). Use the "Remove Tax" mode in our calculator to do this instantly.
Multiply the pre-tax price by the tax rate. For example, $100 x 8.5% = $8.50 tax. Total = $108.50.
Five US states have no sales tax: Alaska, Delaware, Montana, New Hampshire, and Oregon.
Divide the total price by (1 + tax rate/100). For example, $108.50 / 1.085 = $100 pre-tax price.