VAT Calculator
Add VAT to a net figure, or pull it back out of a gross one. Any rate you need.
Net
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VAT
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Gross
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Worked example
Adding 20% to 100 gives 120. Extracting 20% from 120 gives 100 — but dividing 120 by 1.2, not multiplying by 0.8. That difference is the single most common VAT error.
VAT is charged on the net amount, so extracting it from a gross figure means dividing by 1 + rate. Multiplying the gross by 0.8 to "remove 20%" takes 20% of the gross instead of 20% of the net, and lands 4% short on every invoice.
Rates that are not 20%
The field is free-form because rates differ by country and by category within a country. Reduced rates, zero rates and exempt supplies all exist; this tool does arithmetic, not tax advice.