Add US sales tax to a price or reverse it out of a total. Enter your combined state plus local rate, or pick a common preset, and see the subtotal, the tax, and the total.
How to use the Sales Tax Calculator
Choose the direction: add sales tax (subtotal to total) or reverse it (total to subtotal).
Enter the amount in USD.
Enter your combined state plus local sales tax rate, or tap a common preset.
See the pre-tax subtotal, the sales tax, and the total instantly.
This calculator adds sales tax to a pre-tax price or reverses it out of a tax-inclusive total. It returns the subtotal, the tax, and the total.
Everything runs in your browser and no data is sent to any server.
Because US sales tax varies by state and locality, you enter the combined rate yourself, or pick a common preset such as 0, 4, 6, 7, 8.25, or 10%.
Enter a pre-tax price to add sales tax on top, or enter a tax-inclusive total to reverse the tax back out and find the underlying subtotal.
Sales tax rules, sourcing, and taxable categories differ by state, so this is an estimate only and not tax advice. Treat the result as a guide rather than a final number.
Frequently asked questions
There is no single national rate. The US has no federal sales tax or VAT, so the rate is set by each state and often by the county or city on top. Combined rates range from 0 in a few states to over 10% in some localities. Enter the combined state plus local rate that applies where you buy.
Multiply the pre-tax price by the rate. At 7% a 100 USD subtotal has 7 USD of tax, for a 107 USD total. Choose add sales tax and the calculator does this for you.
Divide the tax-inclusive total by 1 plus the rate. At 7% a 107 USD total is 100 USD subtotal plus 7 USD tax. Choose reverse and the calculator splits the total back into subtotal and tax.
Oregon, Delaware, Montana, and New Hampshire have no statewide sales tax (Alaska has no state rate but allows local sales taxes). For those, use a rate of 0 unless a local tax applies.
This tool is for general information only and is not financial, tax, or legal advice. Results are estimates that depend on your situation and current rules, so check the official source or a qualified professional before you act.
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How US Sales Tax Works in 2025 (Add It, Reverse It, By State)
Plain guide to US sales tax: why there is no national rate, how state and local rates combine, and how to add tax to a price or reverse it out of a total.
How Your US Paycheck Works in 2025 (Federal Tax, FICA, Take-Home)
Plain guide to US take-home pay for 2025: federal tax brackets, the standard deduction, Social Security and Medicare, and a worked example at 60,000 gross.
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