Sales Tax Reverse Calculator
Use the reverse sales tax calculator to split a tax-included total into pre-tax price and sales tax amount using a state/local rate or override.
Pre-tax price$100.00
Sales tax amount$8.25
Combined rate8.25%
| Total paid | $108.25 |
|---|
Assumptions
- Use a rate override if your receipt uses a known combined rate.
How this calculator works
Formula used
Pre-tax price = total price divided by one plus the sales tax rate.
Example calculation
If the total is $108.25 at 8.25% tax, the pre-tax price is $100 and tax is $8.25.
Sales Tax Reverse Calculator FAQ
Are these tax calculators official IRS tools?
No. These calculators are educational estimators for U.S. planning. They do not replace IRS forms, payroll software, a CPA, or legal advice.
Why might my actual paycheck or tax bill be different?
Actual results can change because of credits, pre-tax benefits, local taxes, payroll timing, itemized deductions, employer setup, and updated federal or state rules.