Sales Tax Calculator
The Sales Tax Calculator finds the tax amount and total price on a purchase — or works backward from a tax-included total to find the original pre-tax price.
Total Price
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Pre-Tax Price--
Sales Tax--
How sales tax is calculated
Tax = Pre-Tax Price × Tax Rate
Total = Pre-Tax Price + Tax
To back out tax from a total price, the formula is rearranged:
Pre-Tax Price = Total Price / (1 + Tax Rate)
Example: A $100 item with 7.25% sales tax costs $7.25 in tax, for a total of $107.25. Conversely, a $107.25 total at the same rate implies a $100.00 pre-tax price.
A note on tax rates
Sales tax rates vary by state, county, and city, and some items are exempt or taxed differently. Check your local combined rate for accuracy. For income-based taxes, see our Income Tax Calculator.