The RBE: Luxembourg's beneficial ownership register, and the one-month clock

Luxembourg's Register of Beneficial Owners — the RBE, or registre des bénéficiaires effectifs — covers every entity registered with the RCS, with the single exception of sole traders who are natural persons.

The declaration is due within 1 month, and the clock is the part founders get wrong: the month runs from the moment the entity became aware, or should have become aware, of the event making the entry or its amendment necessary — not from the date of the event itself. Filing costs €15 excluding VAT.

The RBE is not an incorporation formality that closes; it is a standing register that has to track reality. Figures below are drawn from the 2019 law and from the LBR's own guidance; where a figure carries a source link it is named on the claim it supports.

The one-month clock, and what actually starts it

Article 4 of the law of 13 January 2019 instituting the RBE sets the period at 1 month. Luxembourg Business Registers (LBR), which operates the register, is explicit about where that month begins: on its own help pages, the month runs from the moment the entity became aware, or should have become aware, of the event making the entry or its amendment necessary — not from the date of the event itself.

That distinction does real work. A share transfer signed in March and discovered by the company in June starts its month in June — but "should have become aware" is carrying half the sentence, so a company that reads its own cap table once a year has built itself a permanent lateness problem rather than an excuse.

The amendment duty is keyed to the declared fields. Anything that changes one of them is an event:

Who counts as a beneficial owner

The number everyone quotes carries less weight than it looks. Under the AML law of 12 November 2004, the definition the RBE law imports, a holding of 25% plus one share is only an indication of direct ownership, not a conclusive test. The capital limb of the same definition is drawn on its own terms: a holding of more than 25% of the capital.

Below that line, control still bites. On LBR's determination method, a natural-person shareholder holding less than 25% of the capital is still a beneficial owner, and must be entered in the RBE, if they hold a preponderant voting right. So a founder who sold down to 20% of the capital but kept the deciding vote has not left the register.

Ownership through another company. Where the shares are held by a company rather than by a person directly, the question is not answered by reading the RCS extract: the register wants the natural persons behind the chain, and the indirect limb of the test turns on who controls the entity holding the shares rather than on a single arithmetic product.

Chains do not remove the question, they postpone it. If you cannot draw the ownership on one page, the register cannot be right, and this is the case worth putting to an adviser rather than resolving from a percentage.

Where the search genuinely comes up empty, the register does not stay empty: where the search identifies no beneficial owner, the senior manager is treated as the beneficial owner and is the person entered in the register. The qualifier in front of that rule is routinely dropped in secondary sources and matters: the fallback applies only after all possible means have been exhausted and provided there are no grounds for suspicion.

And "senior manager" is not loose language — it is generally the legally provided management body, not merely the chair of a board of directors - but where a delegue a la gestion journaliere or any equivalent body has been designated under legal or statutory provisions, that person alone is the one entered in the register.

What goes in the declaration, and how it is filed

For each beneficial owner the register takes surname, first name(s), nationality or nationalities, day, month and year of birth, place of birth, country of residence, exact private or business address, Luxembourg national identification number or a foreign identification number, and the nature and extent of the beneficial interests held.

Against expectation, in principle no supporting document has to be attached to the declaration. That is not permission to hold nothing: under article 17 of the 2019 law, the entity must also obtain and keep the same beneficial-owner information, with its supporting documents, at its registered office. The file at the office is the one an authority asks for when the entry is questioned, and it is the one that does not exist in most young companies.

The declaration goes online on the LBR portal, under the "Beneficiaires effectifs" procedure reached through the main "Deposer" procedure; users without internet access can instead use LBR's paid on-site assistance desk, and the filing may be made in person, by an agent, by the notary who drew up the deed, or through that desk.

Signing in needs a LuxTrust product, a Luxembourg eID card, or an eIDAS electronic certificate offering at least a substantial level of security. Article 6 of the law sets 3 working days for the registration itself, so the entry is not instant and should not be promised to a bank as if it were.

Who can actually see it

The short answer is no — public access to the RBE was suspended on 22 November 2022 following a Court of Justice of the European Union judgment handed down the same day. Anything written before that date describes a register that no longer exists in that form, including pages still online.

Since then, professionals subject to the amended AML law of 12 November 2004 reach the register only after signing an agreement with LBR or a one-off access request form. Even for them, the address and the identification number of the registered beneficial owners stay hidden, as do the details of any owner whose access-restriction request has been granted or is still being assessed.

Beyond the authorities and those professionals, people who demonstrate a legitimate interest in the fight against money laundering and terrorist financing are one of the five categories the law opens the register to — the category reworked by the law of 23 January 2025. An owner who obtains a restriction on access to their data holds it for at most 3 years under article 15, and article 10 sets a retention period of 5 years for the recorded information.

Access tightened again in July 2026: since July 2026, consulting an entity's RBE file or ordering an RBE extract requires stating a reason for each consultation, recorded under article 13(2bis) of the amended law of 13 January 2019. Consultations made with a PIN code are unaffected. If someone reviews your entry, that review is now traceable — and the same change applies when your own adviser orders an extract on your behalf.

What non-compliance actually costs

The two tracks are separate: the daily penalty is an administrative measure LBR can impose, the fine range is criminal.

The condition matters: the fine for missing the RBE filing deadline requires that the entity omitted to file "sciemment" (knowingly) — a word inserted into article 20(1) by the law of 23 January 2025 — but knowledge is not required for every RBE fine: article 21(1) (failing to keep the beneficial-owner information and supporting documents at the registered office) and article 21(3) (a beneficial owner who fails to supply the information) carry the same 1,250 to 1,250,000 euro range with no knowledge element at all. Replace the supporting quote with article 20(1): "Sera punie d'une amende de 1 250 euros a 1 250 000 euros l'entite immatriculee qui omet « sciemment » d'adresser endeans les delais vises a l'article 4, paragraphe 1er, alinea 1er, et a l'article 7, paragraphe 4, une demande d'inscription au Registre des beneficiaires effectifs...".

So an inadvertent late filing is not the same exposure as a deliberate one, and the wording repays reading in the consolidated text rather than in a summary of it.

The quietest exposure is the last row. A failure to register beneficial owners that has persisted for 6 months sits on guichet.lu's list of acts that disqualify a permit holder on integrity grounds. The permit is what lets the company trade at all, so a neglected register can reach further than any fine.

The bank reads your RBE entry before you do

This is where the register stops being administrative. At onboarding, the beneficial-owner section of a Luxembourg bank file asks for a recent and up-to-date extract from the Register of Beneficial Owners, an Ultimate Beneficial Owner declaration form dated and signed by the company's representatives, and clear valid ID for each beneficial owner.

That second document surprises founders who assume the register extract is the whole answer: it is required by current CSSF regulation, and it supplements rather than replaces the extract from the Register of Beneficial Owners. It sets out for each identified beneficial owner the first name, surname, date and place of birth, nationality, legal address of residence, and whether that person is a politically exposed person.

The compliance desk then compares that form against the RBE extract and against the ownership story in the rest of the file. Consistency between the three is not optional; a mismatch generates the kind of questions that stall onboarding for weeks, and it is almost always a stale RBE entry rather than anything sinister.

Where no beneficial owner can be identified at all, the ABBL and guichet.lu vademecum is blunt about the consequence: the bank cannot establish the business relationship, and for an existing relationship transactions should not be carried out and the relationship should be terminated.

The same information sits on the critical path at formation. When the company is formed and the capital is to be unblocked, the entrepreneur hands the bank the release certificate together with the final articles of association, any missing supporting documents and information on the company's beneficial owners. Beneficial-owner data that is still being argued about is therefore money the company cannot spend.

Common questions

Can the RBE declaration be filed in English?

The form is accepted in French, German or Luxembourgish only — English is not accepted on the RBE declaration form. This catches out English-speaking founders more than any other detail on the procedure, and it is worth knowing before the month is half gone rather than on the last afternoon.

What if a shareholder will not give me their details?

The obligation is theirs as well as yours: a beneficial owner who fails to give the entity the information it needs faces the same 1,250 to 1,250,000 euro fine in their own name. Putting that sentence in a shareholders' agreement, alongside an undertaking to notify the company of any change without delay, converts an awkward conversation into a contractual one.

Is there an RBE step when the company is wound up?

No — once an entity is struck off the RCS its RBE entry is deleted automatically, so no separate RBE step is needed. Everything before that point, though, still has to be current: a company being sold or closed is precisely when someone finally reads the entry.

Keeping it correct

1. At formation, run the ownership chain to natural persons before the deed is signed, and file the first declaration inside the month.
2. On every cap-table change, ask the reflex question — does this touch a declared field? — and date the moment the company learned of it, because that date is the one the deadline runs from.
3. Keep the register's supporting file at the registered office, not only in the accountant's inbox.
4. Re-read the entry before any bank, investor or buyer does. Pull a fresh extract and check it line by line against the shareholders' register.
5. Put the RBE on the same compliance calendar as the annual filings, with an event-driven line rather than an annual one.

See what monthly accounting includes, from €250

Maintained, the RBE costs a few minutes and €15 excluding VAT per filing. Neglected, it reaches the bank account, the business permit and eventually the register itself.