Free Sales Tax Calculator
Calculate sales tax, pre-tax price, and total price from any tax rate, instantly in your browser.
Enter a price and tax rate to calculate sales tax.
Tax rates vary by state, county, and city — enter the exact combined rate for your location.
How to use this sales tax calculator
- Enter the price.
- Enter your local sales tax rate.
- Check the box if the price already includes tax.
- Read the tax amount and total instantly.
Why you enter your own tax rate
Sales tax rates vary by country, state, county, and even city, and change over time. Rather than hardcode a rate that would quickly go stale or be wrong for your location, this tool asks for your exact combined rate so the result is always accurate.
Common use cases
- Calculate the total price of an item including sales tax
- Work out the pre-tax price when you only know the tax-included total
- Compare totals across different local sales tax rates
Frequently asked questions
Is this sales tax calculator free?
Yes. It is completely free, with no signup and no limits.
What tax rate should I use?
Use the combined local sales tax rate for your area (state plus any county/city tax). You can usually find this on your local tax authority's website or a recent receipt.
Can I calculate the pre-tax price from a total?
Yes — check "The price already includes tax" and enter the total price; the calculator will work out the pre-tax price and tax amount.