Reverse VAT calculator

How to use the tool

1. Fill in these fields: Amount (€), VAT rate (%).
2. Select “Calculate” to obtain the result.
3. Enter the VAT-inclusive total and the correct rate.
4. Removing VAT divides by 1 + rate/100.

Method and principles

Method, examples and limits

Net = gross ÷ (1 + rate/100); VAT = gross − net. €122 at 22% gives €100 net and €22 VAT. The net amount is rounded to cents and tax is found by subtraction so the figures reconcile. Removing 22% of the gross is not the same operation. Calculate each rate separately for invoices with multiple rates.

Enter the gross total and the rate already included in the price. A total of 122 euros with 22% VAT contains 100 euros net and 22 euros tax. Subtracting 22% directly from the gross amount gives a different answer. For invoices with several rates, calculate each portion separately.

Result details

Limits and checks

• No. Divide gross by 1.22 to find net; VAT is the difference between gross and net.

Reference sources

• DPR 633/1972 · IVA