UK VAT Calculator 2026
Add VAT to a net amount or remove it from a VAT-inclusive total using UK presets or a custom rate.
Market: GB
GBP
VAT rate
UK presets: standard 20%, reduced 5%, and zero rate 0%. Choose the rate that applies to your transaction.
Enter the amount to calculate VAT
Enter any rate from 0 to 100
VAT Calculation Formulas
VAT = Amount × Rate ÷ (100 + Rate)
VAT = Amount × Rate ÷ 100
When extracting VAT, the tax is already included in the amount and needs to be isolated. When adding VAT, the tax is calculated on top of the base amount.
About the VAT Calculator
VAT (Value Added Tax) is a tax on goods and services. In the United Kingdom, the standard rate is 20%, the reduced rate is 5%, and some supplies are zero-rated at 0%. Exempt supplies are different from zero-rated supplies and should not be treated as interchangeable.
The calculator works in two modes. 'Extract VAT' — when you know the total amount including tax and want to find how much of it is VAT. Formula: VAT = Amount × Rate ÷ (100 + Rate). 'Add VAT' — when you know the net amount and want to find the total with VAT. Formula: VAT = Amount × Rate ÷ 100.
Calculations run instantly in your browser. Presets are a convenient starting point, while the custom field supports another rate when the correct treatment has already been established.
VAT Calculator Benefits
Two Calculation Modes
Extract VAT from the total amount or add VAT to the base price — both modes available in one calculator.
UK Presets and Custom Rate
Start with 20%, 5% or 0%, or enter another percentage manually when your transaction requires it.
Instant Calculation
Results update with every change to the amount or rate without pressing any buttons. All calculations run locally in your browser.
VAT FAQ
What is VAT?
VAT (Value Added Tax) is an indirect tax included in the price of goods and services at every stage of production and sale. The final consumer pays the full VAT amount, while businesses remit the difference between 'input' and 'output' VAT to the government.
What VAT rates apply in the United Kingdom?
HMRC lists a standard rate of 20%, a reduced rate of 5%, and a zero rate of 0%. Which rate applies depends on the exact goods or services and how they are supplied; some transactions are exempt instead.
What's the difference between extracting and adding VAT?
'Extract VAT' means finding how much tax is contained in a known amount (e.g., from a receipt or invoice). 'Add VAT' means adding the tax to a net amount (e.g., to the cost of goods) to find the total price.
What formulas are used for calculation?
Extract VAT: VAT = Amount × Rate ÷ (100 + Rate). Amount without VAT = Amount − VAT. Add VAT: VAT = Amount × Rate ÷ 100. Amount with VAT = Amount + VAT. For example, at 20% rate from 120,000: VAT = 120,000 × 20 ÷ 120 = 20,000.
How accurate is the calculator?
The arithmetic uses the standard add/remove VAT formulas and rounds the displayed currency to two decimal places. It does not determine the legally applicable rate or replace HMRC guidance, accounting rules or professional advice.