Add VAT to a price

In short: to add VAT, multiply the net price by the VAT factor. At 20% multiply by 1.20; at 5% by 1.05. The result is the gross (VAT-inclusive) price.

How to add VAT to a price

Take the net amount, multiply by 1 plus the rate. The VAT amount is net times the rate. The gross is net plus VAT.

Formula

• VAT = Net × rate ÷ 100
• Gross = Net × (1 + rate ÷ 100)

Add 20% VAT (UK standard)

£100 net + 20% VAT = £20 VAT, £120 gross. To add 5% reduced VAT: £100 × 1.05 = £105.

Examples

• £100 net at 20% → VAT £20, gross £120.
• £250 net at 20% → VAT £50, gross £300.
• £80 net at 5% → VAT £4, gross £84.

FAQ

How do I add 20% VAT?

Multiply the net price by 1.20. £100 becomes £120.

Is adding VAT the same as the gross price?

Yes — the gross (inc-VAT) price is the net price with VAT added.

Related

• Remove VAT (reverse)
• VAT formula
• UK VAT calculator

Open the full VAT calculator →