Enter a price and sales tax rate to see the tax amount and total, or switch to reverse mode to back out the pre-tax price from a total that already includes tax.
Amount: Tax rate (%):
Mode:
How It Works
In the default mode, the calculator multiplies your price by the tax rate to get the tax amount, then adds it to get the total. In reverse mode, it divides the tax-included total by (1 + rate) to find the original pre-tax price.
How to Use This Tool
- Enter the price and the local sales tax rate.
- Choose whether the amount you entered already includes tax.
- Click Calculate to see the breakdown.
Sales tax rates vary by state, county, and city in the US, and by country elsewhere; check your local rate if you are not sure of it.
Did You Know?
- Some US states have no statewide sales tax at all, including Oregon, Montana, and Delaware.
- A receipt that lists a total “including tax” is exactly the kind of figure the reverse mode here is built to unpack.
Frequently Asked Questions
Why would I use reverse mode?
Reverse mode is useful when you only know a final total that already includes tax (like a receipt total) and want to know the original price before tax.
Does this handle combined state and local tax rates?
Yes, just enter your total combined rate (state plus any county or city tax) as a single percentage.