Luxembourg VAT number check
Check a Luxembourg supplier's or customer's number against VIES, the European Commission's register. Below: the format, what it's called locally, and the mistakes that make a correct number fail.
Paste the number with or without the country prefix. Nothing you enter is stored.
The format
| Prefix | LU |
|---|---|
| After the prefix | 8 digits |
| Structure | One block of 8 digits. |
| Example | LU12345678 |
You can paste the number with spaces, dots or dashes; the checker removes them.
What it's called
Numéro d'identification à la TVA, often shortened to numéro TVA.
The VAT number (LU + 8 digits) is separate from the 13-digit matricule national that appears on many company documents.
What trips people up
- A 13-digit number on a Luxembourg document is the matricule, not the VAT number.
Other ways to check
VIES is the check to rely on for cross-border trade. The number is issued by Administration de l'enregistrement, des domaines et de la TVA (AED); if a correct number keeps showing invalid, the business has to take it up with them.
Sources
Formats from the European Commission's VIES FAQ, checked 16 October 2026. Rules can change; the tax authority's own guidance wins.
Questions about Luxembourg VAT numbers
What is the format of a Luxembourg VAT number?
LU followed by 8 digits. Example: LU12345678.
What is a Luxembourg VAT number called?
Numéro d'identification à la TVA, often shortened to numéro TVA. The VAT number (LU + 8 digits) is separate from the 13-digit matricule national that appears on many company documents.