Add tax to a price, or figure out the pre-tax amount from a tax-included total.
A sales tax calculator adds tax to a price or backs it out of a tax-included total. Enter the amount and your combined state-and-local rate to see the tax and the final price.
There are two everyday questions: what a listed price becomes after tax, and what pre-tax amount is hidden inside a tax-included total. To add tax, multiply the price by the rate. To back it out, divide the total by one plus the rate, not by subtracting the rate, which slightly overstates the tax. This calculator handles both directions.
The rate that applies is rarely just the state rate, most places stack county and city taxes on top, so two towns in the same state can differ by a couple of percent. Rules also vary on what's taxed: groceries, clothing, and services are exempt or reduced in some states. Use your exact combined local rate for an accurate figure.
Multiply the price by the tax rate. To find a pre-tax price from a total, divide the total by one plus the rate.
Your combined rate, the state rate plus any county or city tax. It varies widely by location.
In most U.S. states, yes, a trade-in reduces the taxable amount. Rules vary, so check your state.
See the exact formula and a worked example on our methodology page.