Sales tax calculator
Add or remove a tax using your selected jurisdiction and explicit rate. See the amount before tax, tax amount and total.
Free. No account. No payment.
Result
Show calculation steps
Choose add or remove tax and confirm the rate. Removing included tax requires division by one plus the rate.
Formula
Calculation steps
Money is displayed to 2 decimal places; tax is rounded before adding it to the total.
More options
Select the jurisdiction independently of your language. Portugal’s islands and Spain’s other tax territories need separate treatment.
Tax
No verified preset is available. Enter the applicable rate yourself.
Select the jurisdiction independently of your language. Portugal’s islands and Spain’s other tax territories need separate treatment.
This tool performs arithmetic, not legal tax determination. The applicable rate and obligations depend on the transaction, place and date. Confirm them with the official authority.
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How we calculateTry an example
Understand the calculation
Adding sales tax
Multiply the price by the rate as a decimal to get the tax, then add it on. At 8%, tax on $49.99 is $3.9992, which rounds to $4.00, for a total of $53.99. Or multiply by 1.08 in one step.
Removing sales tax from a total
Divide the total by 1 plus the rate. A receipt total of $85.60 at 7% tax had a pre-tax price of 85.60 ÷ 1.07 = $80.00, and the tax was $5.60.
Subtracting 7% of $85.60 gives $79.61, which is wrong, because the tax was 7% of the lower pre-tax price.
Which rate to use
US sales tax is set by states and often by counties, cities and special districts as well, so the rate depends on where the sale happens and sometimes on what is sold. When several rates apply, they are usually added together into one combined rate. Check your state’s revenue department for the current rate. This calculator does the arithmetic, not the tax rules.
Rounding
Tax is calculated on the full amount and rounded to the cent before it’s added. Stores that tax and round each item separately can end up a cent different on a long receipt.
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Understand the calculation