US Sales Tax Calculator
Calculate sales tax on a purchase or find the pre-tax amount from a tax-inclusive total. Enter your combined state + local rate.
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Country-specific calculator. Amounts stay in United States (USD) even if you change the header country.
How to Use
- Choose add tax or remove tax from total.
- Enter amount and combined sales tax rate percent.
- Copy the breakdown.
Frequently Asked Questions
Where do I find my sales tax rate?
Use your state revenue department site or a ZIP-level lookup for combined state + local rates.
Estimates only, not tax advice. Rules vary by state and filing status. Consult IRS publications or a tax professional before filing.