Sales Tax Calculator
Calculate sales tax the way US checkout works: enter a net amount and the combined state + local tax rate to get the tax and the total — or remove tax from a receipt total to see the pre-tax price.
Worked example
100 at 8.25%: tax 8.25, total 108.25
How to calculate
- Choose add-tax or remove-tax mode.
- Enter the amount and the tax rate (state + local combined).
- Read the tax amount and the total, formatted in your currency.
Formula
Tax = Net × Rate ÷ 100 · Total = Net + Tax
Explanation
- Shoppers: estimating the checkout total before paying.
- Sellers: quoting prices that exclude or include tax.
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Use CalculatorFrequently Asked Questions
How do I calculate sales tax?
Multiply the net price by the tax rate and add it to the price: 100 at 8.25% adds 8.25 in tax for a 108.25 total. Use remove-tax mode to go backwards from a total.
Why do tax rates differ so much in the US?
There is no national sales tax — states, counties and cities each set their own rates, which is why you enter the combined rate for your location.