Sales Tax Calculator
Add sales tax to a price or work backwards from a tax-included total — enter the amount and rate (or pick your state) to see the tax and the total or pre-tax price.
Estimate using each state’s base statewide rate. Local county and city sales taxes usually add more on top, and some items are taxed differently or exempt. Check your local combined rate for an exact figure.
Adding and reversing sales tax
To add sales tax, multiply the price by the rate and add it on: a $100 item at 7% is $7 tax, for a $107 total. To reverse it — find the pre-tax price hidden inside a tax-included total — divide the total by 1 plus the rate: $107 ÷ 1.07 = $100. The calculator does both; just switch the mode.
State base rates vs your local rate
The rate here is each state’s base statewide rate. In most places, county and city taxes add more on top, so your real combined rate at the register can be a point or two higher. Five states — Delaware, Montana, New Hampshire, Oregon and Alaska — have no statewide sales tax. Pick your state below to load its base rate, then nudge it to your local rate if you know it.
Sales tax calculator by state
Pick your state to load its base sales-tax rate:
Frequently asked questions
How do I calculate sales tax?
Multiply the pre-tax price by the sales tax rate as a decimal, then add it to the price. For example, a $100 item at a 7% rate is $100 × 0.07 = $7 in tax, for a $107 total. Enter your amount and rate above and it’s worked out instantly.
How do I reverse sales tax from a total?
To find the pre-tax price from a tax-included total, divide the total by 1 plus the rate. A $107 total at 7% is $107 ÷ 1.07 = $100 pre-tax, so $7 was tax. Switch the calculator to “Reverse” mode to do this automatically.
What is the sales tax rate in my state?
Statewide base rates range from 0% (in five states) to over 7%, and most places add local county and city taxes on top. Pick your state on the by-state pages to load its base rate, then adjust for your local rate if you know it.
Which states have no sales tax?
Five states have no statewide sales tax: Delaware, Montana, New Hampshire and Oregon, plus Alaska (which has no state tax but allows local sales taxes). In those states, choosing the state sets the rate to 0%.