Reverse VAT Calculator: Add or Remove VAT

How this calculation works

Add VAT: tax = net × rate / 100.
Remove VAT: net = gross / (1 + rate / 100); VAT = gross − net.

Amounts use two decimal places. VAT extraction rounds the net price and uses the remainder as VAT so the figures reconcile. Other tax charges round to the nearest cent, half up. Per-unit landed costs show four decimal places.

Worked example

Illustrative example: at 20%, a gross amount of 120 contains 20 VAT and a net amount of 100. Subtracting 20% of 120 would give 96, which is not the correct reverse calculation.

What to confirm before using the result

Reverse VAT here means extracting VAT already included in a price. It is different from the reverse-charge tax mechanism. References cover EU national standard rates and UK standard VAT; special territories, reduced rates and exemptions need separate checks. A 0% calculation does not establish zero-rating eligibility.

These are arithmetic estimates using your inputs, not tax advice or a filing service. Confirm the transaction’s tax treatment with the relevant authority or adviser. Calculations run in this page; refresh clears the inputs.

UK and EU standard VAT references

Source checked 2026-10-22. National standard references only; special territories and product-specific rates are excluded. Selecting a reference does not change the currency label.

Use the result in your trade documents

Download the CSV to keep the inputs and assumptions with your order. After checking the result, enter the appropriate tax amount in your document draft. Opening the editor does not import this estimate or overwrite an existing order.