Look up a company by number

    RCS number search (Luxembourg)

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

    Search Company Records in Luxembourg

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    Reviewed by LemReveal Research TeamContent reviewed June 2026Primary source: RCS Luxembourg

    How do I look up a company by its registration number in Luxembourg?

    Use the exact RCS with its issuing jurisdiction or register on RCS Luxembourg. Compare the returned legal name and identifier. A valid-looking number does not guarantee a result: coverage, formatting, access and source availability affect the lookup.

    Step-by-step

    1. 1

      Find the RCS on the paperwork

      The RCS normally appears on invoices, contracts, the website footer or official correspondence. It is the number counterparties are required to quote.

    2. 2

      Search the RCS

      Preserve leading zeros, letters, court and jurisdiction information. Follow the source's documented format rather than removing meaningful parts to force a match.

    3. 3

      Confirm the returned entity

      Check the legal name on the returned record matches the name on your paperwork. A mismatch between quoted number and quoted name is a serious warning sign.

    4. 4

      Verify at RCS Luxembourg

      For anything contractual, confirm the number against the primary source at https://www.lbr.lu.

      https://www.lbr.lu
    Open RCS LuxembourgAll 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

    What is a RCS in Luxembourg?

    It is the identifier RCS Luxembourg assigns to a registered entity. It stays with the entity even if the trading name changes, which makes it the reliable way to track a company over time.

    Is a RCS lookup free?

    LemReveal's basic lookup is free where supported. Check RCS Luxembourg's official access rules for the record or document required.

    What if the RCS returns no result?

    Check the format, issuing jurisdiction, coverage and source availability. Preserve meaningful prefixes and leading zeros. An unavailable source is not a confirmed absence; ask the counterparty to clarify the identifier.

    Should I use the RCS or the company name?

    The RCS. Names are duplicated across entities within a group; the number is unique to one entity.

    Why is Luxembourg a financial hub?

    Luxembourg offers political stability, a multilingual workforce, favorable holding company and fund regimes, extensive double taxation treaty network (80+ countries), and is the EU's largest domicile for investment funds (over €5 trillion AUM).

    People also ask about look up a company by its registration 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://www.lbr.lu.

    Related guides and tools

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