Enter a price and a rate, choose whether to add sales tax to a pre-tax price or strip it out of a receipt total, and get a clean price / tax / total breakdown instantly — no signup.
Everything updates as you type. Nothing is uploaded — the maths runs entirely on your device.
Sales tax is a consumption tax added to the price of most goods and some services at the point of sale. The seller collects it from the buyer and passes it on to the state. In the US it's set at the state level, and many cities and counties add a local tax on top, so the combined rate can be higher than the statewide base.
Three figures matter on any sales tax calculation: the price (before tax), the tax amount itself, and the total (price plus tax). This calculator works in both directions — add tax to a price, or back it out of a total — at whatever rate applies to you. When you're ready to bill, drop the figures into an invoice.
Start from the pre-tax price, multiply by the rate to get the tax, then add it back:
Tax = Price × rate
Total = Price
+ Tax
Start from the total and divide it out to find the pre-tax price, then the difference is the tax:
Price = Total ÷ (1 + rate)
Tax =
Total − Price
A $100 price gains $7.25 of tax for a $107.25 total. In reverse, $107.25 total ÷ 1.0725 = $100 price, with $7.25 of tax included.
Base statewide rates for a selection of states. Cities and counties often add local tax on top, so your combined rate may be higher.
| State | Base state rate | Notes |
|---|---|---|
| California | 7.25% | Highest base state rate |
| Indiana | 7.00% | Flat, few local add-ons |
| Texas | 6.25% | Local up to +2% |
| Illinois | 6.25% | High combined in Chicago |
| Florida | 6.00% | County surtaxes apply |
| Pennsylvania | 6.00% | +1–2% in some cities |
| New York | 4.00% | ~8.875% combined in NYC |
| Colorado | 2.90% | Lowest non-zero base rate |
| Oregon | 0.00% | No statewide sales tax |
| Delaware | 0.00% | No statewide sales tax |
Rates change from time to time and local taxes vary by city and county — always confirm the current combined rate for your location before filing.
Choose Add tax to build a total from a pre-tax price, or Remove tax to strip the tax out of a receipt total.
Type your figure and set the tax rate — tap a quick chip, pick a state, or type any custom percentage.
See price, tax, and total side by side with a visual split, then copy the breakdown for your invoice or records.
Drop your price, tax, and total figures into a clean invoice and download it free.
Selling into the UK or EU? Add or remove VAT at any rate with the free VAT calculator.
Once you're paid, send clean proof of payment that itemizes the sales tax.