Sales Tax & Reverse Tax Calculator: Find the Final Price or Pre-Tax Amount runs free in your browser—no account or upload required.
Sales Tax & Reverse Tax Calculator
How to use it
Choose whether you are adding tax to a listed price or reversing tax from a tax-inclusive receipt total. Enter the combined state and local rate shown by your taxing authority or receipt; this tool does not guess a rate from your ZIP code.
Why the reverse calculation is different
To remove 8% tax from a $108 total, divide by 1.08 to get $100. Subtracting 8% from $108 gives the wrong answer because the tax rate was applied to the smaller pre-tax base.
Important limits
U.S. sales-tax treatment varies by state, locality, product and exemption. Rounding can occur per item or per invoice, so a store receipt may differ by a few cents from a subtotal-level estimate.
Privacy: calculations run only in your browser. Verify taxable status and the current combined rate with your state or local revenue authority.