£20 plus VAT
£20 plus 20% VAT is £24. The standard-rate VAT on £20 is £4. Change the amount or rate in the calculator below.
To add UK VAT, multiply the net amount by 1 + (rate ÷ 100). At the standard 20% rate that is × 1.20, so £20 × 1.20 = £24, of which £4 is VAT.
UK VAT rates: 20% standard (most goods and services), 5% reduced (domestic energy, children's car seats), 0% zero-rated (most food, books, children's clothes). Zero-rated still appears on VAT returns; exempt supplies (insurance, finance, education) do not.
How it works.
Formula: net × (1 + rate ÷ 100) = gross.
- Convert the rate: 20 ÷ 100 = 0.20.
- VAT amount: £20 × 0.20 = £4.
- Gross: £20 + £4 = £24 (or £20 × 1.20).
Worked examples
£20 + 20% VAT = £24 — the standard-rate VAT is £4, added on top of the £20 net price.
On a receipt — a £20 item shown ex-VAT rings up at £24 once 20% VAT is added at the till.
At the 5% reduced rate (domestic energy, children's car seats): £20 + 5% = £21, a VAT amount of £1.
Sources:
HMRC VAT rates
· retrieved 2026-06-18.
Frequently asked questions
How much is 20% VAT on £20?
The VAT is £4. Multiply the net amount by 0.20: £20 × 0.20 = £4. Add it to the net price and the gross (VAT-inclusive) total is £24.
What is £20 plus VAT?
£24. To add standard-rate VAT, multiply by 1.20: £20 × 1.20 = £24. The 1.20 multiplier is the same as adding 20%.
What if the reduced 5% rate applies to £20?
Some supplies (domestic energy, children's car seats, some mobility aids) are charged at 5%, not 20%. At 5%, the VAT on £20 is £1 and the gross is £21.