UK VAT Calculator
The UK VAT calculator adds or removes the standard 20% rate. It is an estimate for planning. Reduced, zero, and exempt rates are not included.
UK standard VAT 20%
Price
Total
£120.00
Net
£100.00
VAT
£20.00
Formula
Tax added to a price is the price times 20 divided by 100. The total is the price plus that tax.
Tax removed from a price that already includes it is the price divided by 1 plus the rate. The tax is the difference between the price you typed and the net.
This estimate uses the standard rate only. Some goods and services are reduced, zero-rated, or exempt.
Add: tax = amount × rate / 100. Remove: net = amount / (1 + rate / 100).
- amount The price you type, either before tax or including it.
- rate The standard VAT rate for United Kingdom, 20%. It is fixed on this page.
Worked example
A price of £100.00 before VAT at 20% adds £20.00 of tax. The total is £120.00.
Removing VAT from £120.00 leaves a net of £100.00.
FAQ
How do I add 20% VAT in UK?
Multiply the price before tax by 20 and divide by 100. On £100.00, the tax is £20.00 and the total is £120.00.
How do I remove VAT from a price in UK?
Divide the tax-inclusive price by 1 + 20/100. On £120.00, the net is £100.00 and the tax is £20.00.
Does the UK page use reduced rates?
No. It uses the standard 20% rate only. Reduced, zero-rated, and exempt supplies are not calculated.
Related calculators
Rate checked November 11, 2026 against HM Revenue & Customs.
This estimate uses the standard rate only. Some goods and services are reduced, zero-rated, or exempt.