VAT Calculator
Add or remove VAT at any rate and see the net, VAT and gross amounts instantly.
- Net (excluding VAT)
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- VAT at 20%
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- Gross (including VAT)
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Country rates are the standard VAT/GST rates as of January 2026 and are stored in this page — nothing is fetched online. Reduced and zero rates exist in most countries, so check the correct rate for your goods or services before invoicing.
How it works
Pick whether you want to add VAT to a net price or remove VAT from a gross price, type the amount, and the net, VAT and gross figures appear as you type. Adding VAT multiplies the net amount by the rate (£100 at 20% VAT gives £20 VAT and a £120 gross price). Removing VAT works backwards: the gross price is divided by 1 + rate ÷ 100, so £120 including 20% VAT becomes £100 net plus £20 VAT — dividing by 1.2 rather than simply taking 20% off, which is the mistake most people make with reverse VAT.
Use the quick-rate buttons for the common UK rates (20% standard, 5% reduced, 0% zero-rated) or pick a country from the dropdown to load its standard rate. Every figure is rounded to two decimals and the VAT amount is derived so that net + VAT always equals the gross total, exactly as it should appear on an invoice. Everything is calculated in your browser with plain JavaScript — no accounts, no ads, and none of your figures ever leave your device.
Frequently asked questions
How do I add VAT to a price?
Multiply the net price by the VAT rate and add it on. At the UK standard rate of 20%, £100 net × 20% = £20 VAT, giving a gross price of £120. Choose "Add VAT", type the net amount and the calculator shows the net, VAT and gross figures as you type.
How do I calculate VAT backwards from a gross price?
Divide the gross price by 1 + the rate ÷ 100 — not by simply taking the percentage off. At 20% VAT, £120 ÷ 1.2 = £100 net, so £20 was VAT. Switching to "Remove VAT" does this reverse VAT calculation for you at any rate.
What is 20% VAT on a price?
20% VAT adds one fifth to a net price: £50 becomes £60, £250 becomes £300. Going the other way, a gross price already including 20% VAT is divided by 1.2 to get the net amount — £60 including VAT is £50 net plus £10 VAT.