Luxembourg Numéro de TVA validator
How the Numéro de TVA format works
- Format
- LU + 8 digits
- Example
- LU12345678
Things to watch for
- This tool checks the format only; no check-digit validation is performed
^LU[0-9]{8}$A Luxembourg VAT number is “LU” followed by exactly 8 digits — LU12345678 — making it one of the more compact formats in the EU, shorter than most of its bigger neighbors’ 9-to-13-character numbers. Luxembourg’s Administration de l’enregistrement, des domaines et de la TVA (AED) issues these to businesses registered for VAT, and the short, fixed length means there’s little ambiguity about whether a number is complete: 8 digits, no more, no less.
The quirk worth knowing has less to do with the digits themselves and more with why so many appear on international invoices: Luxembourg is a disproportionately common home for holding companies, investment funds, and cross-border digital-services businesses relative to its population. A Luxembourg VAT number on an invoice doesn’t necessarily mean day-to-day operations happen there — it often means the entity is structured through Luxembourg for other reasons.
The format check
This validator confirms the “LU” prefix and counts exactly 8 digits, entirely in your browser, with no signup and nothing sent to a server. It’s a length-and-prefix check — no check-digit formula is applied to the 8 digits here.
What this doesn’t confirm
A correctly shaped number isn’t proof of an active VAT registration today. Confirm current status through the EU’s VIES lookup or the AED directly before relying on it for invoicing.
Scope: Luxembourg VAT format only — not check-digit validation or registration status.
Content last reviewed 2026-07-07.
Numéro de TVA FAQ
How short is a Luxembourg VAT number compared to other EU countries?
It's among the shortest in the EU: 'LU' followed by just 8 digits, for example LU12345678. Several larger EU economies use 9, 10, or even 11-digit VAT numbers, so an 8-digit Luxembourg number can look 'too short' to someone unfamiliar with the format — it isn't.
Why does Luxembourg have so many VAT-registered entities for such a small country?
Luxembourg is a major EU hub for holding companies, investment funds, and cross-border e-commerce, so a large number of VAT registrations there belong to entities whose day-to-day operations sit elsewhere in Europe — worth knowing if a Luxembourg VAT number shows up on an invoice from a business you didn't expect to be based there.
Does this tool confirm a Luxembourg VAT number is registered and active?
No — it checks format only. Confirm live status through the EU's VIES lookup or Luxembourg's Administration de l'enregistrement, des domaines et de la TVA (AED).