Sales Tax Calculator
Formula
Tax = Price × Rate ÷ 100 | Total = Price + Tax
Multiply the pre-tax price by the sales tax rate (as a percentage) and divide by 100 to get the tax amount. Add the tax to the original price for the total.
Frequently Asked Questions
What is the average US sales tax rate?
The average combined state and local sales tax rate in the US is about 6.5-8.5%, varying significantly by state and city.
Which US states have no sales tax?
Alaska, Delaware, Montana, New Hampshire, and Oregon have no state sales tax (though Alaska allows local sales taxes).
How do I calculate tax included in a price?
If tax is already included, divide the total by (1 + rate/100). For a $108.25 total at 8.25% tax: $108.25 ÷ 1.0825 = $100 pre-tax.