Work out US sales tax for any state - with a hint on the average combined state and local rate.
Updated for tax year 2026
No. Everything runs in your browser - your file never leaves your device. How this is verifiable
Unlike most countries, the US has no nationwide sales tax - each state sets its own rate, five states charge none at all, and many cities and counties add a further local rate on top. This calculator taxes at the state rate and additionally shows the nationwide average combined state-plus-local rate as an orientation figure.
The calculation runs entirely locally in your browser, in pure JavaScript - nothing is uploaded or stored. Price times the tax rate gives the tax amount, added to the total. It shows the price, the tax rate, the tax amount and the total price - instantly on every input.
An honest note: the calculated amount uses only the state rate, because local add-ons vary down to the address level - an average would usually be wrong for a single purchase. The displayed "average combined rate" is therefore only a hint, not a charged tax. For the exact amount at checkout, your city or county's own local rate applies.
| Input formats | Form inputs (no file) |
|---|---|
| Processing | Locally in your browser (JavaScript) |
| File upload | None |
Limitations: Uses only the state sales tax rate - local city/county add-ons are not included and can raise the real amount. Five states charge no sales tax; individual categories (groceries, clothing, medicine) are wholly or partly exempt in many states - this calculator does not model that.
No, the entire calculation runs locally in your browser - nothing is uploaded or stored.
Alaska, Delaware, Montana, New Hampshire and Oregon levy no statewide sales tax (Alaska still allows local add-ons).
Local add-ons vary down to the address - a nationwide average would usually be inaccurate for your specific purchase location. The calculator therefore shows it only as an orientation figure.
Partly or fully in many states - this calculator does not model that, it uses the general rate.
These are commonly-cited published reference figures, not live-fetched official data - rates change occasionally, check your state's current figure for larger amounts.
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