Quickly calculate VAT by adding VAT to a net price or working backwards from a VAT-inclusive amount. Select the VAT rate you need, or enter a custom rate for other calculations.

The calculator gives you a clear breakdown of the net amount, VAT amount and gross amount, making it easy to check figures for invoices, purchases and everyday business calculations.

Enter the amount you want to calculate, then choose whether you want to add VAT or remove VAT.

Add VAT

Use this option when the amount you enter does not include VAT. The calculator will work out the VAT and add it to the net amount to give you the total including VAT.

For example, £100 at 20% VAT:

• Net amount: £100.00
• VAT: £20.00
• Gross amount: £120.00

Remove VAT

Use this option when the amount you enter already includes VAT. The calculator will work backwards to show you the original net amount and the VAT included in the total.

For example, £120 at 20% VAT:

• Gross amount: £120.00
• Net amount: £100.00
• VAT included: £20.00

Choosing a VAT Rate

Select the VAT rate that applies to your calculation. The calculator includes commonly used UK VAT rates, as well as a Custom Rate option for other calculations.

Please note: VAT rates and VAT treatment can vary depending on the goods or services supplied. This calculator is intended for general calculation purposes and does not determine whether a particular supply is subject to VAT or which rate should legally apply.