Reverse VAT Calculator
Reverse VAT calculator for the UK. Enter a gross amount and instantly see the net price and VAT element.
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Net amount£100.00
VAT (20%)£20.00
Gross amount£120.00
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About this calculator
A reverse VAT calculator works backwards from a gross (VAT-inclusive) price to show the net amount and VAT element separately. Useful for receipts that show only the total.
The formula is Net = Gross ÷ (1 + VAT rate). At 20%, Net = Gross ÷ 1.20.
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Frequently asked questions
Why use a reverse VAT calculator?+
When a supplier gives you only a gross price, you may need the VAT element for accounting or reclaim.
Can I use this for the 5% reduced rate?+
Yes — change the rate to 5% and it will calculate the reverse VAT correctly.
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