Sales Tax
Sales tax rates vary wildly across the US — from 0% in Delaware, Montana, New Hampshire and Oregon to nearly 10% in parts of Louisiana, Tennessee and California. Our sales tax calculator handles every US state with up-to-date 2025 rates, adds tax to a pre-tax price, removes tax from a post-tax price, and works for VAT-style countries too if you enter the rate manually.
Tax Rate:
US State Sales Tax Rates 2025
Sales tax rates vary significantly across US states. Five states — Alaska, Delaware, Montana, New Hampshire, and Oregon — collect no state-level sales tax at all, making them popular destinations for large purchases. On the other end of the spectrum, states like California (7.25%), Indiana (7%), Mississippi (7%), Rhode Island (7%), and Tennessee (7%) have among the highest base rates.
Keep in mind that local municipalities often add their own taxes on top of the state rate. For example, while California's state rate is 7.25%, Los Angeles county adds extra local taxes bringing the combined rate above 10%. This calculator uses base state rates only — check your local rate for the most precise figure.
How to Calculate Sales Tax
Adding sales tax to a price is straightforward: multiply the pre-tax price by the tax rate (as a decimal) to get the tax amount, then add it to the original price. For example, a $100 item in Massachusetts at 6.25% tax results in $6.25 of tax and a $106.25 final price.
To reverse-calculate (remove tax from a total), divide the gross price by (1 + tax rate). So if you paid $106.25 and the rate is 6.25%, the pre-tax price is $106.25 ÷ 1.0625 = $100.00. This is useful when you have a receipt total and want to know the base price before tax was applied.
About the Sales Tax Calculator
Sales tax rates vary wildly across the US — from 0% in Delaware, Montana, New Hampshire and Oregon to nearly 10% in parts of Louisiana, Tennessee and California. Our sales tax calculator handles every US state with up-to-date 2025 rates, adds tax to a pre-tax price, removes tax from a post-tax price, and works for VAT-style countries too if you enter the rate manually.
How to use it
- Enter the pre-tax amount.
- Pick your state from the dropdown, or enter a custom tax rate.
- See the tax amount and the final total instantly.
- Toggle "remove tax" mode if you have a tax-inclusive price and need to work backwards.
Formula & methodology
Total = Amount × (1 + rate/100). Reverse: Pre-tax = Total ÷ (1 + rate/100).
Common use cases
- Quoting customers an accurate out-the-door price
- Splitting a tax-inclusive bill among multiple people
- Filing sales tax returns for an online store
- Comparing the cost of an item across state lines
- Pricing services that vary in tax treatment by state
Frequently asked questions
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