Sales Tax Calculator

Tax amount and total for any price — or work backwards from a total.

FREE TOOL · WORKS OFFLINE · NO SIGN-UP

Results update instantly as you type. Use your exact local combined rate (state + city + county) for an exact figure.

Total price (with tax)
$0
Pre-tax price
$0
Tax amount
$0

🧾 How to Use This Sales Tax Calculator

  1. 1.Forward mode (default). Enter the sticker price and your local tax rate — you get the exact tax and the amount you will actually pay at the register.
  2. 2.Reverse mode. Already have a receipt total? Switch modes and enter it to back out the pre-tax price and the tax portion — handy for expense reports and bookkeeping.
  3. 3.Use the combined rate. US sales tax is usually state + county + city stacked together. The chips set a few well-known combined rates, but your exact local rate is the one on your receipt.
  4. 4.Round like the register. Results are rounded to the nearest cent, the same way stores round the tax on a real purchase.

❓ FAQ

How do I calculate sales tax on a price?

Multiply the price by the tax rate as a decimal: tax = price × (rate ÷ 100), then add it to the price for the total. For example, $129.99 at 8.25% gives tax of $129.99 × 0.0825 = $10.72 and a total of $140.71.

How do I remove sales tax from a total (reverse tax)?

Divide the total by 1 plus the rate as a decimal: pre-tax price = total ÷ (1 + rate ÷ 100). A $140.71 total at 8.25% gives $140.71 ÷ 1.0825 = $129.99 before tax. Switch this calculator to "From a total" mode and it does the math for you.

What is the sales tax rate in my state?

Rates vary widely: state base rates range from 0% (for example Oregon and Montana have no statewide sales tax) up to 7.25% in California, and cities and counties add their own — combined rates can exceed 10% in places like Chicago and parts of Louisiana. Check your receipt or your state's tax authority site for your exact local combined rate, then enter it above.

Is this sales tax calculator free?

Yes — 100% free, no sign-up, no limits. Everything runs in your browser; none of your numbers are uploaded or saved.

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