VAT Calculator

Works out the net price, the tax and the gross price from any one of them and a tax rate. Use it to add VAT or sales tax to a price, or to take the tax out of a price that already includes it.

How to use

1. Under "Amount you know", choose "Net", "Gross (incl. tax)" or "Tax".
2. Enter the amount and check the "Tax rate". The starting rate is only an example, so enter the rate that applies to you.
3. Under "Rounding", choose "Round", "Round down" or "Round up", and pick a step under "Round to".
4. The net price, tax and gross price appear at once, and the copy button copies them.

How it works

• From net: tax = net × rate. From gross: tax = gross × rate ÷ (1 + rate).
• Rounding is applied only to the calculated amount; the third amount is a sum or difference, so net + tax = gross always holds.
• You can change the "Currency". Currencies without decimals round to steps of 1, 10 or 100.

Questions and answers

How do I remove VAT from a gross price?

Divide the gross price by 1 plus the rate. At 20%, a gross price of 120 is a net price of 100 and tax of 20.

How do I add VAT to a net price?

Multiply the net price by 1 plus the rate. At 20%, a net price of 50 becomes 60, of which 10 is tax.

Should VAT be rounded up, down or to the nearest unit?

It depends on the rules you work with. Choose "Round", "Round down" or "Round up" and a step under "Round to" to match them.

How do I get the price from the tax amount only?

Choose "Tax" under "Amount you know". The net price is tax ÷ rate, so tax of 30 at 10% means a net price of 300 and a gross price of 330.