VAT / GST Calculator

Add or remove VAT, GST or sales tax at any rate and see net, tax and gross amounts.

How do you calculate VAT?

To add VAT, multiply the net price by (1 + rate ÷ 100). To remove VAT from a price that includes it, divide the gross price by (1 + rate ÷ 100) — subtracting the rate from the gross amount gives the wrong answer.

Examples at 20 %

Add: 100 net → 20 tax → 120 gross.
Remove: 120 gross ÷ 1.2 = 100 net, so the tax is 20 (not 24).

Common rates

Country	Standard rate
United Kingdom (VAT)	20 %
Germany (MwSt)	19 %
France (TVA)	20 %
India (GST)	5 % or 18 % for most goods (40 % for luxury and sin goods, since September 2025)
Australia (GST)	10 %
Sri Lanka (VAT)	18 %

Rates change — always confirm the current rate for your country and product.

Frequently asked questions

How do I remove 20% VAT?

Divide the price including VAT by 1.2.

Does it work for GST and sales tax?

Yes, the maths is the same for any percentage-based tax.

Why not just subtract 20%?

Because the tax was calculated on the net price, not on the gross price.