Sales Tax Calculator
Calculate sales tax and total price for any purchase. Choose from all 50 US state rates or enter a custom rate.
Calculate from
Enter a price and tax rate to calculate.
Total price
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Tax amount
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Pre-tax price
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Price
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Tax
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Total
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How it works
How sales tax is calculated.
- 01
Calculate tax amount
Tax = Price × (Rate ÷ 100). For a $100 item at 8.5%: Tax = $100 × 0.085 = $8.50.
- 02
Calculate total price
Total = Price + Tax. For $100 + $8.50 tax: Total = $108.50.
- 03
Reverse calculation
If you know the total and want the pre-tax price: Pre-tax = Total ÷ (1 + Rate ÷ 100). For $108.50 at 8.5%: $108.50 ÷ 1.085 = $100.00.
FAQ
Frequently asked questions.
How is sales tax calculated?
Sales tax = Purchase price × (Tax rate ÷ 100). For a $100 item at 8.5%: Tax = $100 × 0.085 = $8.50. Total = $100 + $8.50 = $108.50.
Which states have no sales tax?
Five states have no statewide sales tax: Oregon, Montana, New Hampshire, Delaware, and Alaska. Note that Alaska allows local municipalities to impose sales taxes, so some areas in Alaska do charge tax.
Is sales tax the same everywhere?
No. Rates vary by state (0%–7.25% statewide), county, and city. The combined rate including local taxes can exceed 10% in some jurisdictions. Tennessee and Louisiana have some of the highest combined rates; Oregon, Montana, New Hampshire, and Delaware have none.
What items are exempt from sales tax?
Exemptions vary by state. Common exemptions include groceries (many states), prescription drugs (most states), medical devices, and clothing (some states like New York and Pennsylvania). Always check your state's specific rules.
How do I find the pre-tax price from a total?
Divide the total by (1 + tax rate). For a $108.50 total at 8.5%: Pre-tax = $108.50 ÷ 1.085 = $100. This calculator also supports this reverse calculation.
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