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Total Price
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Tax Amount
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Net Price
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About Sales Tax Calculator
Calculate sales tax instantly in either direction — find the total from a pre-tax price, or work backwards from a post-tax price to find the original amount and tax paid.
Features
- Calculate tax forward (before → after) or backward (after → before)
- Quick-select common US tax rates
- Custom tax rate input
- Real-time calculation
Free Sales Tax Calculator FAQ
What is the average sales tax in the US?
The average combined state and local sales tax rate in the US is about 6.5-7.5%. Rates vary from 0% (Oregon, Montana, etc.) to over 10% in some cities.
Is sales tax calculated before or after discounts?
In most US states, sales tax is calculated on the discounted price, not the original price. The tax applies to what you actually pay.
Do online purchases have sales tax?
Since the 2018 Supreme Court ruling (South Dakota v. Wayfair), online sellers must collect sales tax in states where they have economic nexus, which varies by state.
What items are exempt from sales tax?
Common exemptions include groceries, prescription drugs, and medical devices. Exemptions vary significantly by state.