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

Luxembourg's Register of Beneficial Owners (RBE, 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 costs €15 excluding VAT. Founders get the start date 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. Anyone holding more than 25% of the capital goes in, and so does a smaller holder with the deciding vote. Every later change to a declared field restarts the same month.

Once the company is trading, that month is one more statutory deadline to monitor alongside the VAT returns and the annual accounts.

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When does the one-month clock start?

Article 4 of the law of 13 January 2019 sets the period at 1 month. Luxembourg Business Registers (LBR) operates the register, and the awareness rule is stated on its help pages.

A share transfer signed in March and discovered by the company in June starts its month in June. "Should have become aware" carries half the sentence, so a company that reads its cap table once a year is permanently late.

The amendment duty is keyed to the declared fields, and anything that changes one of them is an event.

Who counts as a beneficial owner?

Under the AML law of 12 November 2004, which 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 is a holding of more than 25% of the capital. Below it, 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. A founder who sold down to 20% of the capital but kept the deciding vote has not left the register.

Where the shares are held by another company, the RCS extract does not answer the question. The register wants the natural persons behind the chain, and the test turns on who controls the holding entity.

There is a fallback: 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 condition is strict: the fallback applies only after all possible means have been exhausted and provided there are no grounds for suspicion. Senior manager means 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 is it 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.

On the filing itself, in principle no supporting document has to be attached to the declaration. Under article 17 of the 2019 law, though, the entity must also obtain and keep the same beneficial-owner information, with its supporting documents, at its registered office. That file is the one an authority asks for when the entry is questioned, and the one most young companies do not have.

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 do not promise a bank a same-day entry.

The form comes 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.

Who can see the register?

For the general public the 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.

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 authorities and 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. An owner who obtains a restriction on access holds it for at most 3 years under article 15. Article 10 keeps the recorded information for 5 years.

Access tightened again: 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. That includes your own adviser ordering an extract on your behalf. A consultation made with a PIN code is not affected.

What does a late or missing filing cost?

In the consolidated text, 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.

A failure to register beneficial owners that has lasted 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.

Why does the bank read your RBE entry first?

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.

The UBO declaration form 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 compares the form, the RBE extract and the ownership story in the rest of the file. A mismatch stalls onboarding for weeks, and it is almost always a stale RBE entry rather than anything sinister.

Where no beneficial owner can be identified, the ABBL and guichet.lu vademecum is blunt: 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 data sits on the critical path at formation. To unblock the capital, the founder 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.

What if a shareholder will not give their details?

The duty 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. A shareholders' agreement can carry that sentence, with an undertaking to notify the company of any change without delay.

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

The register closes itself: once an entity is struck off the RCS its RBE entry is deleted automatically, so no separate RBE step is needed. Until that strike-off, a change to a declared field still has to be filed within 1 month, and a sale or a closing is when someone finally reads the entry.

How do you keep the entry correct?

1. At formation, run the ownership chain to natural persons before the deed is signed, and file inside the month.
2. On every cap-table change, ask whether a declared field moved, and date the day the company learned of it.
3. Keep the supporting file at the registered office, not only in the accountant's inbox.
4. Pull a fresh extract before any bank, investor or buyer does, and check it line by line against the shareholders' register.

Put the RBE on the same compliance calendar as the annual filings, with an event-driven line rather than an annual one. The register stays current when LBR's month is tracked inside the same statutory filings and compliance monitoring as the VAT returns and annual accounts. A share transfer is then declared in the month it should be, not the one after.