TopToolsAiCalculate US sales tax on a purchase amount at any rate — since US sales tax varies by state and locality, enter your local rate for an accurate total. A $200 purchase taxed at a typical 8% combined state-and-local rate adds $16 in tax, for a total of $216 — rates range from 0% in states like Oregon to over 9% in parts of Louisiana, so entering the correct local rate matters.
Last updated: 1 Sep 2026
How to use USA Sales Tax Calculator
- Enter the amount and your local sales tax rate.
- Click "Calculate" to see the tax and total.
Frequently asked questions
Why isn't there one national US sales tax rate?
The US doesn't have a federal sales tax — rates are set individually by states, counties and sometimes cities, so they vary widely.
Where do I find my local rate?
Check your state's Department of Revenue website, or look at a recent receipt from a local purchase.
Are all products taxed at the same rate?
No — many states exempt or reduce tax on categories like groceries, prescription medicine, or clothing, so the general rate may not apply to every purchase.
Does online shopping charge sales tax?
Usually yes — most online retailers now charge sales tax based on the buyer's shipping address, following changes in US tax law in recent years.
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