Tool 10 of 10
Sales tax calculator.
Add any sales tax rate to a price and see the total instantly.
US state base rates
Tax amount
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Total price
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Frequently asked questions.
How do I calculate sales tax?
Tax Amount = Price × (Tax Rate / 100). Total = Price + Tax Amount. Example: $50 at 8% tax = $50 × 0.08 = $4 tax, Total = $54.
How do I find the pre-tax price from the total?
Pre-tax Price = Total Price ÷ (1 + Tax Rate / 100). Example: $54 total at 8% = $54 ÷ 1.08 = $50.
What is the average US sales tax rate?
The combined state + local average sales tax in the US is approximately 7–9%. Rates vary widely: Oregon has 0%, while some localities in Tennessee exceed 9.75%.
Is sales tax calculated before or after discounts?
Sales tax is typically applied to the discounted (sale) price, not the original price. So discount first, then apply tax.
What is the sales tax on $100 at 8.5%?
$100 × 0.085 = $8.50 tax. Total = $108.50.
Do all states have sales tax?
No. As of 2024, five US states have no state-level sales tax: Oregon, Montana, New Hampshire, Delaware, and Alaska (though Alaska allows local taxes).