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Tax Calculator

Add sales tax to a price or work out the pre-tax amount from a total.

Calculators Reviews Free · no sign-up

Total to pay

—

Combined rate—
Subtotal before tax—
Tax—
Per unit, with tax—

Retailers usually round tax per line item, so a multi-item receipt can differ from this by a cent or two.

Quick Tool Overview

The Tax Calculator adds sales tax to a listed price or extracts it from a total. You can enter one combined rate, or enter state and local rates separately and let the calculator add them — which is how US sales tax actually works.

What it does
Adds sales tax to a price or splits it out of a total
You give it
A price and one or two tax rates
You get back
The pre-tax amount, the tax and the total
Best for
US checkout prices, expense claims and bookkeeping entries
Calculators Free, unlimited use No sign-up Runs in your browser

About the Tax Calculator

A general sales tax calculator that adds tax to a listed price or extracts it from a total. You can enter a single combined rate, or enter a state rate and a local or county rate separately and let the calculator add them for you.

This matters most in the United States, where prices are usually advertised before tax and the combined rate depends on the city as well as the state. Knowing the real checkout price ahead of time is the everyday use, and the reverse mode covers the opposite job: taking a receipt total and splitting it back into the pre-tax amount and the tax paid, which is what expense claims and bookkeeping entries need.

Key features of the Tax Calculator

State and local rates combined

Enter them separately and the calculator adds them, which matters where the combined rate depends on the city as well as the state.

Know the checkout price first

US prices are advertised before tax, so this is the everyday use — finding what you will actually pay.

Reverse mode for receipts

Split a receipt total back into the pre-tax amount and the tax paid, which is what expense claims need.

Any rate

Works for any sales tax, use tax or local levy — the arithmetic does not care what it is called.

Rounded to currency

Results are presented to two decimal places so they match what a till would print.

How to use the Tax Calculator

  1. 1

    Enter the price

    Type the listed price, or the total from a receipt if you are working backwards.

  2. 2

    Set the tax rate

    Enter one combined rate, or a state and local rate separately to have them totalled.

  3. 3

    Choose the direction

    Add tax to a pre-tax price, or remove tax from a tax-inclusive total.

Frequently asked questions

Divide the total by one plus the tax rate. A receipt of 107.50 at an 7.5 percent rate has a pre-tax price of 100 and tax of 7.50.

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