VAT calculator
Add VAT to a price or work backwards from a VAT-inclusive total. Check which rate applies before you calculate.
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Your calculation
VAT amount£20.00
Before VAT £100.00 · including VAT £120.00
How to use this result
Adding VAT multiplies the net price by one plus the rate. Removing it divides the inclusive price by that factor. Zero-rated and exempt supplies are not the same for VAT accounting.
Source: Read the official guidance. Checked 23 October 2026. Estimates are not personalised advice.
Useful tools and help
See the VAT and duty calculators.