Sales Tax / VAT / GST Calculator
Add sales tax, VAT or GST to a price, or remove it from a tax-inclusive price to find the net amount and the tax paid.
For information and education only — not financial advice. Results are estimates based on the numbers you enter; check important decisions with a qualified professional.
How to use
- 1Enter the amount and the tax rate.
- 2Choose whether to add tax to a net price or remove it from a gross (tax-inclusive) price.
How it's calculated
Adding: gross = net × (1 + rate). Removing: net = gross ÷ (1 + rate), tax = gross − net. Removing tax is not the same as taking the rate off the gross price.
Frequently asked questions
How do I remove 20% VAT from a price?
Divide by 1.2, not multiply by 0.8. £120 including 20% VAT is £100 net plus £20 VAT; taking 20% off £120 would wrongly give £96.
What rate should I use?
It depends on where you are and what you sell — e.g. UK VAT is 20% standard, Germany 19%, Australia GST 10%, and US sales tax varies by state and city.
Is this suitable for filing tax returns?
It's a quick arithmetic helper. For returns, follow your tax authority's rules on rounding, reduced rates and exemptions.