Sales Tax Calculator
Add tax to a price, or extract it from a tax-included total.
🔒 Runs entirely in your browser — nothing here is ever uploaded
About the Sales Tax Calculator
Adds sales tax to a pre-tax price, or backs the pre-tax price and tax amount out of a tax-included total (like a receipt), with quick-select US state average combined sales tax rates as a starting point.
- Choose whether you have a pre-tax price (add tax) or a tax-included total like a receipt (back out the tax).
- Enter the price and the sales tax rate — or quick-select a state average to start from.
- Read the total, tax amount, and pre-tax price.
An $85 pre-tax price at Tennessee's 9.61% average combined rate: $8.17 tax, for a total of $93.17. In reverse with a $93.17 tax-included total at the same rate: pre-tax price of $85.00 and tax of $8.17.
| State | Avg. combined rate |
|---|---|
| Oregon / Montana / Delaware / New Hampshire | 0% (no state sales tax) |
| Alaska | 1.82% (no state rate; local only) |
| California | 9.03% |
| Tennessee | 9.61% |
| Louisiana | 10.13% (highest in US) |
State rates shown are averages (Tax Foundation, as of July 1, 2026), not exact ZIP-code figures — county, city, and special-district taxes stack on top, and many states exempt or partially tax categories like groceries or clothing. Confirm your local rate before relying on this for a real transaction.
- • When backing tax out of a receipt total, divide the total by (1 + rate), don't subtract the rate percentage directly.
- • State quick-picks are averages only — always check your exact city/county rate for a real purchase.
- • Some states exempt or partially tax specific categories (groceries, clothing, prescription drugs).
- Tax Foundation — State and Local Sales Tax Rates — accessed 2026-08-30
Illustrative estimate only, not financial or tax advice. Verify figures with a licensed adviser or your local tax authority.