VAT & Sales Tax Calculator
Add or remove VAT, GST or sales tax at any rate, in any currency.
How to use VAT & Sales Tax Calculator
- Choose whether to add tax to a net price or remove it from a gross price.
- Enter the amount and the tax rate that applies.
- Read the net amount, tax and gross total.
How it works
Adding tax: gross = net × (1 + rate). Removing tax: net = gross ÷ (1 + rate). A common mistake is to remove tax by subtracting the rate from the gross price: 20% of a 120 gross price is 24, but the VAT included is only 20.
The calculator does not store tax rates for countries, because rates change and differ by product category (reduced rates, exemptions). Always use the rate published by your tax authority.
Example
At 20%, a net price of 100 becomes 120 gross with 20 tax. Removing 20% VAT from 120 gives back 100 net (not 96).
Frequently asked questions
How do I remove VAT from a price?
Divide by 1 plus the rate: at 20%, divide by 1.2. At 17%, divide by 1.17.
Is GST calculated the same way?
Yes. GST, VAT and most sales taxes are a percentage added to the net price. Some places combine several taxes (for example state plus local sales tax): add the rates together.
Why doesn’t the tool know my country’s rate?
Rates change and vary by product; using an outdated built-in rate would give wrong answers. Check your tax authority’s current rate.
How are results rounded?
To 2 decimal places for display. Invoices may round per line or per total depending on local rules.
Limitations
- Does not apply exemptions, reduced rates or reverse-charge rules.
- Rounding rules vary by country.
Last reviewed November 9, 2026. How we build and test tools.