VAT calculator: add or remove VAT
Enter an amount and a rate to add VAT to a price, or take VAT out of a price that already includes it. UK rates of 20%, 5% and 0% are one tap away, with standard rates for other countries and any custom rate, and the working is shown so you can check it.
How to use the VAT Calculator
- 1Choose Add VAT if your price excludes VAT, or Remove VAT if it already includes it.
- 2Enter the amount and pick a rate, such as 20%, or type your own.
- 3Read the net price, the VAT and the gross price. The formula is shown underneath.
- 4Copy the result, or use the invoice generator to put it on an invoice.
Frequently asked questions
How do I add VAT to a price?
Multiply the net price by 1 plus the rate. At 20%, £100 × 1.2 = £120, so the VAT is £20. At 5%, £100 × 1.05 = £105.
How do I work out VAT from a total that includes VAT?
Divide the total by 1 plus the rate to get the net price, then subtract. At 20%, £120 ÷ 1.2 = £100, so the VAT is £20. Taking 20% off £120 gives the wrong answer (£24).
What is the VAT fraction?
It's the share of a VAT-inclusive price that is VAT: rate ÷ (100 + rate). At 20% it's 1/6, at 5% it's 1/21. Multiply a gross amount by it to get the VAT directly.
Are the country VAT rates in the calculator always up to date?
They're the standard rates we know of as of 2026, shown as shortcuts. Rates change and many goods have reduced rates, so check your tax authority's website before you rely on one.
Related free tools
All tools- UK VAT calculatorUK VAT calculator (20%, 5% and 0%)
- Reverse VAT calculatorReverse VAT calculator: remove VAT from a price
- Invoice GeneratorMake a professional PDF invoice with your logo, VAT and discounts.
- Percentage CalculatorX% of Y, X is what % of Y, and percentage increase or decrease.
- Discount CalculatorPrice after a discount, your savings, and stacked discounts.
- Receipt GeneratorMake a PDF payment receipt, on A4 or an 80 mm till-roll layout.
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