Sales Tax Calculator
Calculate sales tax for any US state. Reverse-calculate tax from a receipt, or compare rates across states. All 50 states + DC with 2026 rates.
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How to Use This Calculator
Calculate Sales Tax tab
The default tab. Enter the price before tax, select your state, and see the sales tax amount and total you'll pay. Toggle between "Price before tax" and "Price after tax" modes. Expand "More options" to override the tax rate with your exact local rate.
Reverse Sales Tax tab
You have a receipt showing $127.43 total — how much was tax? Enter the total amount paid, select your state, and the calculator extracts the pre-tax price and tax amount. Useful for expense reports, reimbursements, and tax deductions.
Compare States tab
Compare sales tax across 4 states side by side on any purchase amount. See which state charges the most and least. Expand the full table to view all 50 states + DC ranked by combined rate.
Share your result
Every input is encoded in the URL. Click Share to send your exact scenario to a colleague, accountant, or friend.
The Formula
Sales tax is calculated as a percentage of the purchase price:
Total = Price + Sales Tax
Total = Price × (1 + Tax Rate)
Reverse calculation:
Pre-tax Price = Total ÷ (1 + Tax Rate)
Tax Paid = Total − Pre-tax Price
The combined rate is what you actually pay: state rate + average local rate. For example, Tennessee has a 7% state rate but 9.61% combined because counties and cities add their own taxes. Five states — Alaska, Delaware, Montana, New Hampshire, and Oregon — have no state sales tax.
Most states exempt groceries from sales tax, or tax them at a reduced rate. The calculator shows each state's grocery status.
Example
Emma — buying a $1,200 laptop in Texas
Emma lives in Austin, TX. The Texas state sales tax rate is 6.25%, and the average combined rate (state + local) is 8.20%.
Calculate Sales Tax tab
Emma pays $98.40 in sales tax. If she bought the same laptop in Oregon (0% sales tax), she'd save the full $98.40.
Compare States tab
On a $1,200 purchase, the difference between the highest-tax state (Tennessee) and a no-tax state (Oregon) is $115.32.