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Sales Tax Calculator
Add tax to a price, or work backwards from a tax-inclusive price to see what the tax and pre-tax amount were.
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Enter a price and tax rate, then calculate.
How it's calculated
Adding tax: Total = Price × (1 + Rate ÷ 100). Backing tax out of a tax-inclusive price: Pre-tax price = Price ÷ (1 + Rate ÷ 100).
Frequently asked
What's the difference between the two modes?
"Price before tax" adds tax on top of the amount you enter. "Price including tax" assumes tax is already baked into the amount you enter, and calculates what the pre-tax price and tax portion were.