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Add or remove VAT and see a clear breakdown instantly.
Enter an amount, choose a mode and select the VAT rate.
Amounts shown in GBP
VAT is added to the net amount at 20%.
Quick guide
Choose Add VAT when your amount is before VAT, or Remove VAT when the amount already includes it. Enter the price, select 20%, 5% or 0%, or choose a custom rate when you need something different. The calculator immediately shows the net amount, the VAT amount and the final gross amount.
To add VAT, multiply the net price by the VAT rate, then add that VAT amount to the original price. For a £100 price excluding VAT at the standard 20% rate:
£100 excluding VAT at 20%
VAT = £100 × 20% = £20
Total including VAT = £120
Removing 20% VAT is not the same as subtracting 20% from the VAT-inclusive total. The VAT was calculated from the smaller net price. To reverse it, divide the gross amount by 1.20. For £120 including 20% VAT, £120 ÷ 1.20 gives a £100 net price. The VAT element is the £20 difference between the gross and net amounts. At the standard 20% rate, that £20 is one-sixth of the £120 VAT-inclusive total because 20 ÷ 120 = 1 ÷ 6. This one-sixth shortcut applies only when extracting 20% VAT from a VAT-inclusive amount.
The standard UK VAT rate is 20%. A reduced rate of 5% and a zero rate of 0% also apply in qualifying circumstances. The correct treatment depends on the goods or services and the circumstances of the transaction, so this calculator should be used as a convenient calculation aid rather than professional tax advice.
Rates checked against GOV.UK on 15 August 2026. VAT rates and qualifying rules can change, so confirm the current treatment when it matters. This calculator is a calculation aid, not tax advice. If eligibility, exemptions or VAT rules matter to your decision, check the current official HMRC guidance.
FAQs
Multiply the net price by 0.20 to find the VAT, then add it to the net price. For example, 20% of £50 is £10, giving a VAT-inclusive total of £60.
Divide the VAT-inclusive total by 1.20. Subtracting 20% gives the wrong net amount because the VAT is 20% of the net price, not 20% of the gross total.
No. The standard rate is 20%, but reduced and zero rates also exist. The VAT treatment depends on the goods or services and the circumstances.
Yes. Select Custom in the VAT rate controls and enter any non-negative rate. The net, VAT and gross figures update instantly.