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Reverse VAT Calculator

Work out reverse vat instantly with clear inputs, formula shown and shareable results.

About Reverse VAT Calculator

Extracting VAT from a gross figure uses the VAT fraction, rate divided by one plus the rate — one sixth at a 20% rate. Multiplying the gross by that fraction gives the tax directly.

Formula

VAT fraction

VAT = gross × rate/(1+rate); net = gross - VAT

Worked example

With the default values below, Reverse VAT Calculator returns Net Amount Excluding VAT of $10,000.00. Change any input above and every figure here is recalculated in your browser.

Inputs used

Gross Amount Including VATminimum 0
12,000
VAT Rateaccepts 0–40 %
20 %

Results

Net Amount Excluding VAT
$10,000.00
VAT Contained
$2,000.00
VAT Fraction Applied
0.166667
VAT As Share Of The Gross
16.667%

Step by step

  1. 1Values used
  2. 2VAT fraction
  3. 3Net Amount Excluding VAT= 10,000.00
  4. 4VAT Contained= 2,000.00
  5. 5VAT Fraction Applied= 0.166667
  6. 6VAT As Share Of The Gross= 16.667

Assumptions and limits

  • The result is derived only from the 2 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, fees or charges or compounding frequency into account.
  • Figures are rounded for display to 6 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
  • Tax figures are estimates based on the rates, caps and thresholds you enter. Real rules differ by jurisdiction and change every year, and personal circumstances alter the outcome. This is not tax or financial advice — confirm with a qualified adviser.
  • This is an estimate for general information and not professional financial, tax or legal advice. See the full disclaimer for the limits that apply to this kind of calculator.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Tax figures are estimates based on the rates, caps and thresholds you enter. Real rules differ by jurisdiction and change every year, and personal circumstances alter the outcome. This is not tax or financial advice — confirm with a qualified adviser.

Frequently Asked Questions

Why is the fraction one sixth at 20%?

Because 0.20/1.20 = 1/6. It is the standard shortcut used on till receipts.

Does it work for reduced rates?

Yes. At 5% the fraction is 1/21, computed the same way.

Related Calculators

Reverse VAT Calculator – Calculate Net Amount Excluding VAT