How to calculate sales tax
Multiply the price by the combined sales tax rate for the place where the sale happens, then add the result to the price.
Sales tax = Price × Combined rate
Total = Price + Sales tax
For example, a $100.00 purchase at a combined rate of 8.25% has $100.00 × 0.0825 = $8.25 in sales tax, for a total of $108.25.
Why the rate depends on your location
The combined rate is the sum of every jurisdiction that taxes the sale: the state, the county, the city and any special districts such as transit or stadium districts. That is why the calculator asks for a ZIP code or city. A single ZIP code can cross city or county lines, so when a ZIP has more than one rate the calculator lists each tax area for you to choose from.
What this calculator does not cover
Many states exempt or reduce the tax on items such as groceries, prescription drugs or clothing, and some add extra taxes on items like prepared food or lodging. The calculator applies the general sales tax rate. Check the state’s rules for the specific product or service before you rely on the result.