Every entity registered with the RCS must declare its beneficial owners. Here is who is concerned, what to file, the one-month deadline and the penalties, now actually enforced.
In short. Every entity registered with the Luxembourg trade and companies register (RCS) must declare its beneficial owners to the Register of Beneficial Owners (RBE), kept by the Luxembourg Business Registers (LBR). A beneficial owner is the natural person who ultimately owns or controls the entity, in practice above 25% of the shares or voting rights. Any registration or change must be filed within one month. A missing declaration, or an inaccurate one, exposes you to a fine of €1,250 to €1,250,000. Since 2025, the LBR has moved to a phase of checks and penalties: this is no longer a formality to put off.
The RBE is one of those quiet duties that bring nothing while you comply, and cost a lot the moment you do not. Many owners filed it once when they set up their company, then forgot it, even though it must follow every change of ownership. Here is exactly what the law expects, who is concerned, what to file and by when, and why the subject has become pressing again in 2026.
What is the Register of Beneficial Owners?
The RBE is an official register, operational since 1 March 2019, that records the natural persons who stand behind entities registered in Luxembourg. It was set up by the law of 13 January 2019 and forms part of the European framework against money laundering and terrorist financing. The idea is simple: behind a company there are always one or more real people who control it, and the State wants to be able to identify them.
The register is run by the Luxembourg Business Registers (LBR), an economic interest grouping bringing together the State, the Chamber of Commerce and the Chamber of Skilled Trades and Crafts, under the supervision of the Minister of Justice. It is the same body that keeps the trade and companies register and the RESA electronic gazette, which is why the two filings are often handled together.
Who must declare their beneficial owners?
The duty applies, in principle, to every entity registered with the RCS. According to Guichet.lu, this covers in particular:
- commercial companies (SARL, SA, SARL-S, SCS, SCSp, and so on);
- civil-law companies, including property investment companies (SCI);
- economic interest groupings and European economic interest groupings;
- non-profit associations (ASBL) and foundations;
- common funds and special limited partnerships;
- Luxembourg branches of foreign companies and other legal persons whose registration is required by law.
By contrast, sole traders (natural persons), temporary commercial companies and companies in participation are not subject to the registration duty, hence not to the RBE. In plain terms, as soon as you hold a company registered with the RCS, you are concerned, whatever its size. A small newly formed SARL has exactly the same duty as a large group.
Who exactly is a beneficial owner?
This is the point that confuses most, because people mix up the beneficial owner with the manager or the nominal shareholder. The beneficial owner is the natural person who ultimately owns or controls the entity. For a company, this is the person who holds, directly or indirectly, a sufficient percentage of shares, voting rights or ownership interest. The Luxembourg anti-money-laundering framework uses, as a reference threshold, a holding of more than 25%.
Two points matter. First, indirect holdings count: if a Luxembourg or foreign parent company holds your shares, you must go up the chain to the natural person at the top. A SOPARFI holding structure therefore does not remove the declaration, it complicates it. Second, if no beneficial owner can be identified above the threshold, the law requires the entity's senior manager to be declared. There is no case where the field stays empty.
What information must be declared?
For each identified beneficial owner, the LBR electronic form asks for a precise set of information:
| Data | Expected detail |
|---|---|
| Identity | Surname, first name(s), nationality(ies) |
| Birth | Date (day, month, year) and place of birth |
| Residence | Country of residence and precise private or business address |
| Identification | National identification number (RNPP) or, for a non-resident, a foreign identification number |
| Interest held | Nature and extent of the beneficial interest held |
For a listed company whose securities are admitted to trading on a regulated market, the regime is lighter: it is enough to state the name of the regulated market. In other cases, an identity document may be required where the person has no Luxembourg national identification number.
How and by when to file
The declaration is made online only, on the LBR website, using a LuxTrust certificate. The filer may be the entity itself, a notary or an agent, which is why many owners entrust the task to their accounting firm alongside the keeping of their books. After filing, the LBR issues a receipt within three business days; if the request is incomplete, fifteen days are allowed to put it right.
The deadline to keep firmly in mind is one month. Any initial registration, but also any change affecting a beneficial owner, must be filed within one month of the point at which the entity became aware, or should have become aware, of the event. A share transfer, a gift, a change of a partner's address, a change in voting rights: each of these events starts a one-month countdown. This is where most breaches occur, not in bad faith, but because the first declaration created the impression that the matter was closed.
A doubt about your RBE, or a recent change of ownership to declare? We check your situation and update it on time.
Have your RBE checkedPenalties: a very real enforcement phase since 2025
The RBE is not a cosmetic duty, and its penalty regime is heavy. An entity that fails to file a registration request, or files an inaccurate, incomplete or out-of-date one, faces a criminal fine of €1,250 to €1,250,000. The same range applies to a beneficial owner who refuses to give the company the information it needs to file. So it is not only the company that is exposed, but also the natural persons who control it.
For a long time this regime stayed theoretical. That is no longer the case. Since 2025, the LBR has announced the move to a penalty phase, and compliance checks are being carried out in 2026 to verify that entities have an up-to-date RBE. In other words, the risk has changed in kind: from a duty many put off, we have moved to active enforcement. A company that has never updated its RBE since incorporation has every reason to regularise it before being asked to.
Who can consult the RBE?
Access to the register has changed a great deal, and it must be handled with the right date in mind. Originally, the RBE could be consulted free of charge by the public. Since the ruling of the Court of Justice of the European Union of 22 November 2022, general public access has been restricted. As at 31 July 2026, consultation is open to national authorities and to professionals subject to anti-money-laundering obligations, as well as to persons demonstrating a legitimate interest, while certain personal data (precise address, identification number) remain protected in principle.
In addition, an entity or a beneficial owner may request a restriction of access to their information, limited in time and duly reasoned, in cases of disproportionate risk of fraud, kidnapping, blackmail, violence or intimidation, or where the beneficial owner is a minor or legally incapable. If the request is accepted, the information stays accessible only to national authorities, credit and financial institutions, bailiffs and notaries.
Where the RBE sits among your company duties
The RBE does not stand alone. It is part of the base of administrative and accounting duties a Luxembourg company must keep up to date continuously, alongside filing its annual accounts with the RCS or its tax returns. The logic is the same everywhere: accurate information, filed on time, in the right register. That is exactly what an accounting firm takes on so these deadlines do not slip through the cracks, as we describe in our guide to the accounting firm in Luxembourg.
Let us be clear on one point, in fairness: the RBE is not an accounting act, it is a legal declaration. We file it and keep it up to date for the companies whose file we handle, because we have a view of their ownership anyway. On a complex, multi-jurisdiction holding structure with intertwined ownership chains, identifying the beneficial owner is a matter of detailed legal analysis, and we then point you to specialist advice rather than deciding in its place.
Bookkeeping, legal filings and RBE kept up to date in a price agreed up front, from 325 € per month.
Ask for your fixed feeFrequently asked questions
Must every company declare a beneficial owner in Luxembourg?
Yes. Every entity registered with the RCS (SARL, SA, SARL-S, civil-law company, ASBL, foundation, branch, and so on) must declare its beneficial owners to the RBE. Only sole traders and a few non-registered forms are exempt. The size of the company is irrelevant.
Who is the beneficial owner of a company?
It is the natural person who ultimately owns or controls the company, in practice above 25% of the shares or voting rights, taking indirect holdings into account. If no owner exceeds that threshold, the entity's senior manager is declared.
By when must the RBE be updated?
Within one month of the point at which the entity becomes aware of the event that makes registration necessary. This applies to the initial declaration and to any change: a share transfer, a change of a partner's address, a change in voting rights.
What penalties apply for an out-of-date RBE?
A criminal fine of €1,250 to €1,250,000 for the entity that fails to declare or declares inaccurate, incomplete or out-of-date information, and the same range for the beneficial owner who fails to provide the information. Since 2025, the LBR actually applies these penalties.
Is the RBE public?
No longer on the same terms as originally. Since the Court of Justice of the European Union ruling of 22 November 2022, general public access has been restricted. Consultation is reserved for authorities, professionals subject to anti-money-laundering rules and persons demonstrating a legitimate interest, with protection of certain personal data.
Read more
- Setting up a SARL in Luxembourg: steps, capital and procedures
- Setting up a holding company in Luxembourg: the SOPARFI explained
- Filing annual accounts in Luxembourg: deadlines and late fees
- Accounting firm in Luxembourg: the complete guide for an SME
- What an accounting firm costs in Luxembourg: fixed fee, hourly rates and hidden extras
Why Advena?
We keep the books of Luxembourg SMEs and follow their legal duties in the same file, RBE included: initial declaration, update at every change of ownership, respect of the one-month deadline. A price agreed up front from 325 € per month, a named file manager, no invoice outside the monthly fee. We inform without standing in for legal advice: on a complex ownership chain, we point you to the right expertise rather than deciding in its place.
Information in force on 31 July 2026, based on the Guichet.lu factsheet Declaring beneficial owners to the Register of Beneficial Owners, the law of 13 January 2019 establishing a Register of Beneficial Owners and the Grand-Ducal regulation of 15 February 2019. The access and penalty regime has changed and keeps changing: check the official LBR source before any decision. This article informs; it does not replace analysis of your situation.
Tell us where your company stands, and we tell you whether your RBE is up to date, and put it right.
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