Add VAT to a price, or take it out of a price that already includes it. Free, nothing to install, no sign-up.
This calculator does both VAT sums: adding it to a price that does not include it, and taking it out of a price that already does. Type the amount, set the rate that applies to you and press the button you need. It runs inside your browser, so the amounts you type are never sent anywhere, and you can download the result as a PDF.
Adding VAT means multiplying by one point the rate: at 20%, the price without VAT is multiplied by 1.20. Taking it out is the opposite operation, which means DIVIDING by 1.20 — not subtracting 20%. That difference is what trips nearly everyone up, and it comes from the fact that the percentage is worked out on the price before VAT, not on the final price.
An item at 100 with a rate of 20%. To add the VAT: 100 × 1.20 = 120. The VAT is 20 and the final price is 120. Now the other way round: you have an invoice for 120 with VAT included and you want the net amount. Divide: 120 ÷ 1.20 = 100. The net amount is 100, and the VAT is the 20 that makes it up to 120.
Subtracting 20% from the final price. Take 20% off 120 and you get 96, which is not the net amount — you are four out. The reason is that you are working that 20% out on 120, which already includes the tax, when the VAT was worked out on 100. Taking a percentage off does NOT undo having added it. To undo it you have to divide.
Take the result and run the sum backwards. If you worked out the net amount from a VAT-inclusive price, add the VAT back on to that net amount: it has to give you exactly the price you started from. If it does not, you subtracted instead of dividing.
Because the VAT was worked out on the price BEFORE tax, and subtracting the percentage works it out on the price AFTER tax, which is a bigger number. 20% of 120 is 24; 20% of 100 is 20. Dividing by 1.20 is the only thing that undoes the original multiplication.
The calculator has a list of fifteen countries with their standard rate, checked in September 2026: pick yours and it fills itself in. The box stays open because reduced rates — food, books, certain services — differ from the standard one and change by law. If that is your case, the right rate is on your invoice or on your national tax authority website.
No. The calculator runs entirely inside your browser: the numbers you type never leave your device and are not stored anywhere. No account and no email address needed.
Yes, with the PDF button. It downloads with the working shown, which is what you need to attach it to a quote or an invoice.
Written and checked by the Tutorio Lab editors · Who we are and how we are funded