basic

Sales-Tax-Inclusive Price Splitter

Extract pre-tax base and tax from a tax-inclusive total.

Given a tax-inclusive total and a sales-tax rate, back-out the pre-tax base price and the tax dollars: base = total / (1 + rate); tax = total − base.

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

Base = total / (1 + rate%/100); tax = total − base.

In depth

Given a tax-inclusive total and a sales-tax rate, back-out the pre-tax base price and the tax dollars: base = total / (1 + rate); tax = total − base.