Free UK VAT Calculator
Add or remove VAT instantly. Works for 20% standard rate, 5% reduced rate, and 0% zero rate. Built by a former HMRC VAT officer.
Multiply the net amount by 1.20 (for 20%), 1.05 (for 5%), or leave unchanged (for 0%).
e.g. £100 × 1.20 = £120
Divide the gross amount by 1.20 (for 20%), 1.05 (for 5%), or leave unchanged (for 0%).
e.g. £120 ÷ 1.20 = £100
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This calculator is for guidance only. Always consult HMRC or a qualified accountant for definitive VAT advice.