About the Sales Tax Calculator
This free sales tax calculator helps people in the United States get a quick, private estimate before they talk to a lender, insurer, employer or advisor. There is no signup, nothing is stored on our servers and every result updates instantly in your browser.
How this calculator works
Sales tax equals price times rate divided by 100. Total price is price plus tax.
Worked example
A $100 item at 7% tax costs $107.00 in total. Change any input above to see how the result moves, which is the fastest way to understand which factor matters most for you.
Tips to get a better result
US sales tax varies by state, county and city and some items such as groceries may be exempt. Check your local rate before large purchases.
Key factors that change your result
US sales tax is a combined state, county and city rate that differs by location and product. Some items such as groceries or clothing may be exempt in your state. Use the exact combined rate for your address for the best estimate.
Accuracy and limits
Every calculator on 100tools uses standard published formulas combined with average US market assumptions. Real offers depend on your credit profile, state, provider and personal circumstances, so treat the output as a starting point and confirm with an official quote or a licensed professional. Read more on our methodology page.
Frequently asked questions
Which states have no sales tax?
Alaska, Delaware, Montana, New Hampshire and Oregon have no statewide sales tax, though Alaska allows local taxes.
Is online shopping taxed?
Generally yes, in most states.
Is the sales tax calculator free to use?
Yes. Every calculator on 100tools is free with no registration.
Do you store the numbers I enter?
No. Calculations run in your browser and nothing you type is sent to our servers.