Filing with the LBR (Luxembourg Business Registers)
Published on 10 October 2026 · Updated on 10 October 2026
Please note. Business Registration SARL-S is a private advisory firm. It is not the Luxembourg Business Registers (LBR), the economic interest grouping that officially runs the RCS, the RBE and the RESA. Filings and registrations are made with the LBR, at the fees it publishes.
In short
Luxembourg Business Registers (LBR) filings cover the Trade and Companies Register (RCS), the Register of Beneficial Owners (UBO register) and the Electronic Compendium of Companies and Associations (RESA), where filings are published. Filings are made online with a LuxTrust certificate. Any change must be filed within one month.
The LBR at a glance
- Registers
- RCS, UBO register, RESA and the REGINSOL insolvency register
- Filing
- Electronic, LuxTrust certificate
- Publication in the RESA
- On the day of filing or at most 15 days later
- Consulting the RESA
- Free and open to all
Filings with the LBR
- RCS registrationFiling of the deed of incorporation within one month.
- RCS extractObtain and read a company’s extract.
- Company searchCheck that a company exists and consult its file.
- Filing of a changeDeclare a change to the RCS within one month.
- RCS certificatesCertificates issued by the register.
- Filing feesOfficial fees for LBR filings and services.
- UBO declarationDeclare the beneficial owners.
- UBO updateUpdate the UBO register after a change.
- UBO register accessWho can consult the register.
- RESA publicationUnderstand and consult the publications.
Next step
Your LBR filings, without rejection
We prepare the forms and documents, file and follow the publication.
Frequently asked questions
Do I need a LuxTrust certificate to file with the RCS?
Yes for electronic filing, which is the normal route. A filing can exceptionally be made by appointment at the RCS assistance desk, with an additional fee. Notarial deeds are filed directly by the notary.
Does the LBR check the content of the deeds?
The LBR checks the completeness and formal consistency of the filing against the existing file. It does not check the merits or legal validity of the decision, which is a matter for the company bodies and, where applicable, the notary.
Can the UBO register be consulted like the RCS?
No. The RCS and the RESA are public. Public access to the UBO register has been restricted since the Court of Justice of the European Union judgment of November 2022; authorities and professionals subject to anti-money laundering rules keep access.