Can this calculator add and remove VAT?

Yes. Enter a net amount to add VAT, or a gross amount to remove VAT and see the net and VAT-only amounts.

Which VAT rates are included?

The calculator includes common UK VAT rate options of 20%, 5% and 0%, plus a custom rate field.

No. It is a general calculator only. Which VAT rate applies can depend on the goods, service, place of supply and conditions set by HMRC.

Can it check an invoice line?

Yes. The invoice line mode can combine quantity, unit net price, discount, shipping and VAT rate to show net, VAT and gross totals.

Calculate VAT with the working shown.

Add VAT to a net amount.

Use this when you know the price before VAT and need the VAT-inclusive total.

Add 20% VAT to GBP 100.00.

Total including VAT Round to Currency

£120.00

GBP 100.00 plus 20% VAT is GBP 120.00.

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About this VAT calculation

UK VAT

Use this for straightforward price checks where you already know the VAT rate to apply.

HMRC guidance says the VAT rate can depend on the goods or services and the conditions of supply.

UK VAT rate guide

Quick reference

20%Standard rate for many goods and services.

5%Reduced rate for some qualifying supplies.

0%Zero-rated supplies still have a VAT rate of 0%.

ExemptNo VAT is charged; treatment depends on HMRC rules.

For rate conditions, check GOV.UK guidance on VAT rates for different goods and services.

Useful notes

Glossary

How to use the VAT calculator

Use the VAT calculator when you need to add VAT to a net amount, remove VAT from a gross amount, find the VAT-only value, or check a simple invoice line. The result card separates the net amount, VAT amount, gross amount and rate so the working is easier to check than a single total.

For adding VAT, the calculator multiplies the net amount by the VAT rate to find the VAT amount, then adds that VAT to the net price. For removing VAT, it divides the gross amount by the VAT multiplier. At 20%, the multiplier is 1.2, so a gross price of GBP 120 divided by 1.2 gives a net price of GBP 100.

VAT examples

If a product costs GBP 100 before VAT and the rate is 20%, the VAT is GBP 20 and the total including VAT is GBP 120. If a receipt shows GBP 120 including VAT at 20%, the calculator can work backwards to show GBP 100 net and GBP 20 VAT.

The custom rate option is useful when checking a non-standard rate, but VAT treatment depends on the goods or services, the customer, the country and the conditions of supply. For UK VAT decisions, check current HMRC guidance or speak to a suitable adviser.

Common VAT questions

Is zero-rated the same as exempt? No. A zero-rated supply has VAT charged at 0%, while exempt supplies sit outside VAT in a different way. The business treatment can differ.

Can this calculate a full VAT return? No. This is for simple price and invoice-line checks, not complete VAT accounting.

Why do penny differences happen? Rounding each line separately can differ from rounding a subtotal. The decimal-place option lets you choose how the result is displayed.