Add sales tax to a price, or work out the pre-tax price from a total, for any US state using 2026 state and average local rates.
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How US sales tax works
There’s no federal sales tax. Each state sets its own rate, and most allow cities, counties and special districts to add local taxes on top. Five states have no statewide sales tax: Alaska, Delaware, Montana, New Hampshire and Oregon (some Alaska towns charge local tax).
Highest combined rates (July 2026)
| State | State rate | Average combined rate |
|---|---|---|
| Louisiana | 5.00% | 10.13% |
| Tennessee | 7.00% | 9.61% |
| Washington | 6.50% | 9.57% |
| Arkansas | 6.50% | 9.48% |
| Alabama | 4.00% | 9.46% |
| California | 7.25% | 9.03% |
Formulas
- Add tax: total = price × (1 + rate ÷ 100).
- Remove tax: price = total ÷ (1 + rate ÷ 100).
Example: $100 at a combined rate of 9.5% is $109.50; a $109.50 receipt at 9.5% was $100 before tax.
Frequently asked questions
Which states have no sales tax?
Alaska, Delaware, Montana, New Hampshire and Oregon have no statewide sales tax.
Which state has the highest sales tax?
California has the highest state rate (7.25%); Louisiana has the highest average combined rate.
Is sales tax charged on groceries?
It depends on the state. Many exempt or reduce tax on groceries.
How do I find my exact local rate?
Check your state’s department of revenue website, which usually has a lookup by address.
Sources
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