Sales Tax Calculator
At an 8.25% tax rate, a $100.00 item costs $108.25 with $8.25 of tax. Working backward, a $108.25 total with the same tax contains $8.25 of tax and had a pre-tax price of $100.00.
How to use
- Pick Add tax if you know the price before tax, Remove tax if you know the total with tax included, or Find rate if you know both.
- Type the amount and your local tax rate. Check your state, province or country's current rate, since rates change and many places add local taxes on top.
- Read the tax amount, the pre-tax price and the total. The result updates as you type.
How it works
Add tax: tax = price x rate / 100, and total = price + tax. At 8.25%, $100 gives $8.25 of tax and a $108.25 total.
Remove tax: pre-tax price = total / (1 + rate / 100). It is not total minus rate percent of the total. For $108.25 at 8.25%, 108.25 / 1.0825 = $100.00, whereas taking 8.25% off 108.25 would give a wrong $99.32.
Find rate: rate = (total - pre-tax price) / pre-tax price x 100.
Amounts are rounded to the cent. Stores round tax per line item or per receipt, and the rules differ, so a receipt can differ from this tool by a cent. Combined state and local rates are not looked up for you. Enter the rate that applies to your purchase. Prices of some items, such as groceries or clothing, are taxed at lower rates or exempt in some places.
Quick reference at 8% tax
| Price | Tax | Total |
|---|---|---|
| $10.00 | $0.80 | $10.80 |
| $25.00 | $2.00 | $27.00 |
| $50.00 | $4.00 | $54.00 |
| $100.00 | $8.00 | $108.00 |
| $250.00 | $20.00 | $270.00 |
| $500.00 | $40.00 | $540.00 |
Last reviewed 2026-10-15
FAQ
How do I take sales tax out of a total?
Choose Remove tax, enter the total and the rate. The tool divides the total by 1 plus the rate. For a 7% rate, a $53.49 total contains $3.50 of tax and the price before tax was $49.99.
Is sales tax the same as VAT or GST?
They work the same way for a shopper: a percentage added to the price. VAT and GST are charged at each stage of the supply chain and appear in the final price in many countries. Use Remove tax with a 20% rate to extract UK VAT from a total.
What is my local sales tax rate?
It depends on where you buy. In the US it is the state rate plus any county or city rate. Check your state revenue department website or a recent receipt. This tool does not guess a rate.
Is my data sent anywhere?
No. The calculation runs in your browser and nothing you enter is sent to a server.