VAT Calculator

Add or remove VAT from any amount in seconds. Enter a price and a VAT rate to instantly see the net (pre-tax) amount, the VAT amount, and the gross (tax-inclusive) total — switch to reverse mode to extract the VAT already included in a price.

Gross amount —
Net amount —
VAT amount —

ToolsSoup's VAT Calculator lets you add VAT to a price or remove the VAT already baked into one, instantly. Type an amount and a VAT rate and you immediately see the net (pre-tax) figure, the VAT itself, and the gross (tax-inclusive) total. Use "Add VAT" to mark a net price up to its final tax-inclusive amount, or switch to "Remove VAT" for a reverse VAT calculation that pulls the tax back out of a gross price. It works for any rate — the UK's 20%, Ireland's 23%, EU rates, or your own custom percentage. Everything runs in your browser: no uploads, no sign-up, and your figures never leave your device.

What is VAT?

VAT (Value Added Tax) is a consumption tax added to the price of most goods and services in the UK, the EU, and many other countries. The seller charges VAT on top of the net price, collects it from the customer, and passes it to the tax authority. Because VAT is a percentage of the net amount, a £100 item at a 20% VAT rate carries £20 of VAT and costs the customer £120 in total. A net price is the figure before VAT, while a gross price is the figure including VAT.

How to add VAT to a price

Use "Add VAT" mode when you have a net (pre-tax) figure and want the final price a customer pays:

  1. Choose "Add VAT" mode.
  2. Enter your net amount — the price before tax.
  3. Enter the VAT rate, for example 20.
  4. Read the VAT amount and the gross (tax-inclusive) total below.

How to remove VAT (reverse VAT)

Use "Remove VAT" mode when you already have a gross (tax-inclusive) price and need to work out how much of it is VAT. The calculator divides the gross amount by 1 plus the rate, so a £120 price at 20% VAT breaks down into a £100 net amount and £20 of VAT.

  1. Choose "Remove VAT" mode.
  2. Enter your gross amount — the price including VAT.
  3. Enter the VAT rate that was applied.
  4. Read the net amount and the VAT that was included below.

What is the VAT formula?

To add VAT: VAT = net × rate ÷ 100, and gross = net + VAT. For a £100 net price at 20%, the VAT is £20 and the gross is £120. To remove VAT from a gross price you reverse it: net = gross ÷ (1 + rate ÷ 100), then VAT = gross − net. For a £120 gross price at 20%, net = 120 ÷ 1.20 = £100 and the VAT is £20. A common mistake is taking 20% of the gross price to find the VAT, which overstates it — you must divide, not multiply, when going backwards.

Why use this VAT calculator?

  • Adds VAT to a net price and removes VAT from a gross price in one tool.
  • Shows the net amount, the VAT, and the gross total together so the breakdown is always clear.
  • Works with any VAT rate — 20%, 23%, 5%, or your own custom percentage.
  • Uses the correct reverse-VAT formula (divide by 1 + rate) so extracted VAT is accurate.
  • Updates live as you type, runs entirely in your browser, and is 100% free with no ads or sign-up.

Frequently asked questions

How do I add VAT to a price?

Multiply the net price by the VAT rate to get the VAT, then add it to the net price for the gross total. At 20% VAT, a £100 net price has £20 of VAT and a £120 gross total. Choose "Add VAT" above, enter the amount and rate, and the calculator does it instantly.

How do I remove VAT from a price?

Divide the gross (tax-inclusive) price by 1 plus the rate as a decimal. At 20% VAT, £120 ÷ 1.20 = £100 net, leaving £20 of VAT. Switch to "Remove VAT" above to do this reverse VAT calculation automatically.

What is the VAT on £100 at 20%?

The VAT is £20 and the gross (tax-inclusive) total is £120. Enter 100 as the net amount and 20 as the rate in "Add VAT" mode to confirm.

What is the difference between net and gross?

Net is the price before VAT and gross is the price including VAT. The gross amount always equals the net amount plus the VAT, so gross = net × (1 + rate ÷ 100).

Why can't I just take 20% off a VAT-inclusive price to find the VAT?

Because the 20% was charged on the smaller net figure, not on the larger gross figure. Taking 20% of the gross overstates the VAT. To go backwards you divide the gross by 1.20 to recover the net, then subtract — which is exactly what "Remove VAT" mode does.