Look up a VAT number

    How to look up a VAT number in Luxembourg

    Source-cited registry guidance — access and document fees vary by source.

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    Reviewed by LemReveal Research TeamContent reviewed June 2026Primary source: EU VIES

    How do I look up and validate a VAT number in Luxembourg?

    Validate an exact Luxembourg VAT number using the free EU VIES service at https://ec.europa.eu/taxation_customs/vies/. VIES checks registration for intra-EU transactions; name and address availability varies. It is not a company-name search or a company-registration check. Cross-check the legal entity separately in RCS Luxembourg.

    Step-by-step

    1. 1

      Open the EU VIES portal

      Go to https://ec.europa.eu/taxation_customs/vies/. VIES is the European Commission's official VAT verification service.

      https://ec.europa.eu/taxation_customs/vies/
    2. 2

      Select Luxembourg as the member state

      Choose the country code, then enter the VAT number without the country prefix.

    3. 3

      Read the response

      Record valid, invalid or service unavailable separately. Invalid can reflect non-activation for intra-EU transactions or a registration update, not just de-registration. Name and address may not be supplied by the national service.

    4. 4

      Cross-check in RCS Luxembourg

      For the underlying company registration number and status, search the same entity in RCS Luxembourg at https://www.lbr.lu.

      https://www.lbr.lu
    5. 5

      Save the timestamp

      Keep the queried country, VAT number, result, timestamp and consultation reference where supplied. Evidence requirements depend on the transaction and authority; this response alone is not tax advice.

    Open EU VIESAll Luxembourg records

    Luxembourg: choosing and checking the right record

    Choose the correct source
    Use Luxembourg Business Registers for the RCS entity and available filed documents. Keep an RCS check separate from any beneficial-ownership inquiry, which can have different access conditions.
    Confirm the entity
    Match the full RCS identifier, including its section letter, with the legal name and legal form. Similar names or group membership are not sufficient to select the contracting entity.

    Check current access and document options on the official RCS (Registre de Commerce et des Sociétés) site. For search limitations and missing-result guidance, see the Luxembourg registry guide.

    Frequently asked questions

    Is checking a Luxembourg VAT number free?

    Yes — the EU VIES service at https://ec.europa.eu/taxation_customs/vies/ is free, official, and does not require registration.

    What does an invalid VIES response mean for a Luxembourg VAT number?

    It means the VAT number is not currently registered for intra-EU trade — either it was never valid, was de-registered, or is only registered for domestic transactions.

    Can I look up a Luxembourg VAT number from a company name?

    VIES does not support name search. Ask the supplier for its VAT number and verify it. RCS Luxembourg can help identify the company, but do not assume its record includes a VAT number.

    People also ask about look up and validate a VAT number in Luxembourg

    The exact questions searchers type into Google — answered from the primary source.

    Is the Luxembourg company register free to search?

    Yes. Basic company lookups on the RCS (Registre de Commerce et des Sociétés) are free — you can search by company name or registration number, view legal status, registered address and (usually) directors at no cost. Some jurisdictions charge a small fee only for downloading full filed documents.

    What is the official Luxembourg business registry?

    The RCS (Registre de Commerce et des Sociétés) is the official public register of companies incorporated in Luxembourg. It is operated by the government and is the primary source cited on this page — https://ec.europa.eu/taxation_customs/vies/.

    How do I check if a Luxembourg VAT number is valid?

    Use the EU VIES service (ec.europa.eu/taxation_customs/vies/) or the RCS (Registre de Commerce et des Sociétés). Enter the VAT number without spaces and pick Luxembourg from the country dropdown. A valid number returns the registered trading name and address; an invalid one returns "not valid".

    What does a Luxembourg VAT number look like?

    A Luxembourg VAT number always begins with the country's ISO code and is followed by the national numeric identifier. The exact length and check-digit rule depends on the country — see the format examples in the step-by-step above.

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