US Sales Tax Calculator

Calculate sales tax and the final price for purchases in the United States. Select your state and optionally add a local sales tax rate.

Sales Tax Calculator

Purchase Price $0.00
Total Tax Rate 0%
Sales Tax $0.00
Final Price $0.00
Important: State sales tax rates are used as a starting point. Actual sales tax can vary by city, county, district, product type and other local rules. Enter the applicable local rate when you know it.

How to Calculate Sales Tax

Sales tax is an additional amount charged on many purchases in the United States. The amount can include state and local sales taxes.

Sales Tax = Purchase Price × Total Tax Rate ÷ 100

For example, if an item costs $100 and the total sales tax rate is 8%, the sales tax is $8 and the final price is $108.

How to Use This Sales Tax Calculator

  1. Enter the purchase price.
  2. Select your US state.
  3. Check the state tax rate shown by the calculator.
  4. Enter your local sales tax rate if applicable.
  5. Click Calculate Sales Tax.

State Sales Tax vs. Local Sales Tax

Sales tax in the United States can include both state and local taxes. Local rates may differ between cities, counties and other jurisdictions. For that reason, a state-only rate should not always be treated as the exact rate for a specific location.

Frequently Asked Questions

What is sales tax?

Sales tax is a consumption tax generally added to the price of taxable goods or services at the time of purchase.

How do I calculate sales tax?

Multiply the purchase price by the total sales tax rate and divide by 100. Then add the sales tax to the original price to get the final amount.

Which US state has the highest state sales tax?

California has the highest statewide sales tax rate at 7.25% among the states in the 2026 rates used by this calculator.

Which US states have no statewide sales tax?

Alaska, Delaware, Montana, New Hampshire and Oregon have no statewide sales tax. Local sales taxes can still apply in some locations, particularly in Alaska.

Is this sales tax calculator free?

Yes. This US Sales Tax Calculator is free to use online and does not require software installation.