Work out reverse vat instantly with clear inputs, formula shown and shareable results.
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.
VAT fraction
VAT = gross × rate/(1+rate); net = gross - VAT
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.
Because 0.20/1.20 = 1/6. It is the standard shortcut used on till receipts.
Yes. At 5% the fraction is 1/21, computed the same way.