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Sales Tax Calculator

Quickly work out sales tax on a purchase, or back out the tax from a tax-inclusive total.

Nadia Almasri By Nadia Almasri
Published Last reviewed 1 min read

Inputs

$
%

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

Tax = Price × Rate, Total = Price + Tax. To back out tax from a total: Price = Total / (1 + Rate).

In depth

Quickly work out sales tax on a purchase, or back out the tax from a tax-inclusive total.