Free & Instant

Reverse Sales Tax Calculator

Enter a tax-inclusive total and a tax rate to instantly find the original pre-tax price and the exact tax amount.

The final price the customer paid, including tax.

e.g. 8.25 for 8.25% sales tax.

Common rates

Enter values above to see results instantly.

Formula: Pre-tax = Total รท (1 + rate/100)

1

Enter the total

Type the final amount the customer paid, tax already included.

2

Set the tax rate

Enter your local sales tax percentage, or pick a common rate.

3

Get instant results

See the pre-tax price and exact tax amount update in real time.