Control in a Luxembourg entity is rarely visible at first glance. A Société à responsabilité limitée (Sàrl) or Société anonyme (SA) may list a nominee director and a holding company as sole shareholder. The question a buyer needs answered before signing a shareholders agreement is not who appears on the register — it is who instructs the director and who can override the shareholder meeting. That question is answered layer by layer, across three official sources, before any contractual commitment is made.
The angle here is control: what the sources establish, at what cost, and where the chain breaks.
Primary registerRegistre de Commerce et des Sociétés (RCS Luxembourg) — the mandatory filing point for all commercial entities. Source: RCS Luxembourg · verified 2026-09-20 Beneficial ownership registerRegistre des bénéficiaires effectifs (RBE) — mandatory since 2019 under the Law of 13 January 2019. Access conditions apply; see below. Source: RBE Luxembourg · verified 2026-09-20 Financial statementsAnnual accounts are filed at the RCS and accessible per document. Structured data export is not available. Source: RCS Luxembourg · verified 2026-09-20 What the sources do not showShareholder agreements, side letters, voting trusts, and pledges over shares are not filed in any public register. Their existence cannot be confirmed or excluded from official sources alone.The RCS Luxembourg holds the constitutive documents, articles of association, lists of managers and directors, and — for Sàrl entities — the register of shareholders (registre des associés). For an SA, the shareholder register is held by the company itself and is not publicly filed.
For a Sàrl, the RCS filing shows:
The filing does not show the date on which a share transfer actually occurred between filings. It does not show whether a gérant acts under a side instruction from a controlling shareholder. It does not show whether a shareholder has granted an irrevocable proxy.
Source: RCS Luxembourg · extracted 2026-09-18
Luxembourg transposed the Fourth and Fifth Anti-Money Laundering Directives through the Law of 13 January 2019, creating the RBE. Every entity registered at the RCS must file the identity of its beneficial owner — defined as any natural person holding, directly or indirectly, more than 25% of shares or voting rights, or exercising control by other means.
Following the CJEU judgment in Joined Cases C-37/20 and C-601/20 (November 2022), Luxembourg restricted public access to the RBE. Access is now conditional on demonstrating a legitimate interest. The categories of persons with automatic access — competent authorities, obliged entities under AML law, and persons or organisations that can demonstrate a legitimate interest — are defined by the Law of 13 January 2019 as amended.
What this means for a foreign buyer:
The RBE, once accessed, shows the name, nationality, date of birth, country of residence, and nature and extent of the beneficial interest. It does not show the contractual basis on which that interest is held — whether through a shareholders agreement, a trust, or a usufruct arrangement.
Source: RBE Luxembourg (Registre des bénéficiaires effectifs) · extracted 2026-09-18
Annual accounts filed at the RCS are accessible on a per-document basis. For a Sàrl or SA above the statutory thresholds, the accounts include a balance sheet, profit and loss statement, and notes. Consolidated accounts, where required, are filed separately.
The accounts establish:
The accounts do not establish the identity of the ultimate economic beneficiary of profits. They do not show whether a management fee paid to a related party represents a control mechanism. They do not disclose the terms of any intra-group loan that may give a creditor effective veto rights.
For entities below the statutory filing thresholds, accounts are not publicly available. The threshold categories (micro, small, medium, large) are defined by the Law of 19 December 2002 as amended.
Source: RCS Luxembourg — annual accounts filing · extracted 2026-09-18
The check proceeds in a fixed sequence. Each layer informs the next.
Step 1 — Entity identification. Confirm the exact legal name, registration number, registered office, and legal form at the RCS. Verify that the entity is active and not subject to dissolution or strike-off proceedings.
Step 2 — Management layer. Extract the current gérants or directors, their appointment instruments, and the scope of their signatory authority as stated in the articles. Identify whether joint signature is required and whether any gérant has been granted special powers by board resolution.
Step 3 — Shareholder layer. For a Sàrl, extract the filed shareholder list and cross-reference it against the most recent articles. Identify any intermediate holding entities and repeat the check at each level until a natural person or a listed entity is reached.
Step 4 — Beneficial ownership layer. Submit a legitimate-interest request to the RBE. Map the declared beneficial owner against the shareholder chain established in Step 3. Note any discrepancy between the declared threshold and the structural holding.
Step 5 — Financial layer. Extract the most recent filed accounts. Identify related-party transactions, intra-group balances, and any disclosed pledges or encumbrances on assets.
Step 6 — Gap statement. Document what the sources do not show: undisclosed shareholder agreements, unregistered share pledges, side letters, and any intermediate holding in a jurisdiction where the beneficial ownership register is not accessible.
| Step | Source | What it establishes | What it does not establish |
|---|---|---|---|
| 1 — Entity | RCS Luxembourg | Legal existence, form, registered office | Operational status, actual place of management |
| 2 — Management | RCS Luxembourg | Named gérants, signatory scope | Side instructions, informal authority |
| 3 — Shareholders | RCS Luxembourg (Sàrl) | Nominal holders, share percentages | Beneficial ownership, pledges not filed |
| 4 — Beneficial owner | RBE Luxembourg | Declared UBO above 25% threshold | Contractual basis, trust arrangements |
| 5 — Financials | RCS Luxembourg | Asset scale, related-party flows | Terms of intra-group arrangements |
| 6 — Gap | — | Documented unknowns | — |
The RCS and RBE together cover the declared layer of control. They do not cover the contractual layer.
A shareholders agreement in Luxembourg is a private contract. It is not filed at the RCS. It is not disclosed in the RBE. Its existence is not confirmed or denied by any official source. A shareholders agreement may contain drag-along rights, tag-along rights, pre-emption rights, veto rights over management decisions, and deadlock resolution mechanisms — none of which appear in any register.
A pledge over shares (gage sur parts sociales) in a Sàrl must be notarially registered and filed at the RCS to be enforceable against third parties. An unregistered pledge is not visible. A pledge in an SA does not require RCS filing.
The RBE threshold is 25%. A natural person holding 24.9% through a nominee structure, with contractual rights that give effective control, will not appear in the RBE. The Law of 13 January 2019 includes a catch-all provision for control by other means, but its application depends on the filing entity's own declaration.
Intermediate holding entities in non-cooperative jurisdictions — or in jurisdictions where the beneficial ownership register is not accessible to foreign requesters — create a structural gap that no Luxembourg source can close.
The ceiling of what the sources allow is stated before payment. The gap statement is part of the deliverable, not a disclaimer appended after the fact.
Two types of discrepancy arise regularly in Luxembourg counterparty checks.
RCS shareholder list versus RBE declaration. The RCS may show a holding company as 100% shareholder. The RBE may declare a natural person as beneficial owner at 30%. The gap between 100% nominal and 30% declared beneficial interest is not explained by either source. It may reflect a multi-layer structure, a trust arrangement, or an incomplete RBE filing.
Filed accounts versus RCS shareholder list. Related-party transactions in the accounts may reference entities that do not appear in the shareholder list. This is common where management fees flow to a sister company held by the same ultimate owner through a parallel structure. The accounts name the counterparty; the shareholder list does not show the connection.
Both discrepancies are documented in the report. Neither is resolved by the sources alone.
| Tier | Price | What is included | Not included |
|---|---|---|---|
| Signal | €890 | RCS extract: entity status, management, shareholder list (Sàrl); articles of association; gap statement on shareholder agreement and unregistered pledges | RBE request; financial statements; intermediate holding analysis |
| Standard | €1,900 | All Signal content; RBE legitimate-interest request and beneficial ownership mapping; most recent filed annual accounts; discrepancy note between RCS and RBE layers | Multi-jurisdiction intermediate holding analysis; legal qualification of findings |
| Extended | €4,200 | All Standard content; analysis of intermediate holding entities in up to three additional jurisdictions; related-party transaction mapping from accounts; full gap statement across all layers | Legal advice; opinion on enforceability of shareholder rights; representation |
Does the RBE show the terms of a shareholders agreement? No. The RBE shows the identity of the declared beneficial owner and the nature and extent of the interest. It does not show the contractual basis — whether a shareholders agreement, a trust deed, or a usufruct — on which that interest is held.
What happens if the RBE request is refused? A refusal is documented in the report. The gap is stated explicitly: the beneficial ownership layer could not be verified through the RBE. The RCS shareholder chain is reported as established; the beneficial ownership layer is reported as unverified.
Can a foreign requester submit a legitimate-interest request to the RBE directly? The Law of 13 January 2019 does not restrict requests by nationality. The condition is legitimate interest, not residence. In practice, documenting a legitimate interest in a form accepted by the RBE administration requires familiarity with the procedural requirements. Requests submitted without adequate documentation are refused without appeal on the merits.
Is the shareholders agreement ever visible? Not through official sources. If the counterparty discloses it voluntarily as part of due diligence, it can be reviewed. Its existence cannot be confirmed or excluded from the register layer alone.
What does the gap statement contain? The gap statement names each category of information that the sources do not cover: undisclosed shareholders agreements, unregistered share pledges, intermediate holdings in inaccessible jurisdictions, and any discrepancy between the RCS and RBE layers. It states the reason each gap exists and what additional step, if any, could narrow it.
How long does the Standard report take? The RCS extract is available within days. The RBE legitimate-interest request determines the timeline. Processing time varies and is not fixed by statute. The report is delivered when all source layers are complete.
Registre de Commerce et des Sociétés (RCS Luxembourg) — https://www.lbr.lu — extracted 2026-09-18
Registre des bénéficiaires effectifs (RBE Luxembourg) — https://www.lbr.lu/rbe — extracted 2026-09-18
Law of 13 January 2019 establishing the RBE — https://legilux.public.lu — verified 2026-09-20
Law of 19 December 2002 on the commercial register and annual accounts — https://legilux.public.lu — verified 2026-09-20
Disclaimer: This report is a factual compilation from official registers and public sources. It is provided for informational purposes only, does not constitute legal advice, and contains no legal qualification of the facts established. VLO Law Firm assumes no liability for actions taken or not taken based on this material. For advice regarding your particular situation, please contact info@vlolawfirm.com.
Author: Elena Moretti — Partner, Continental Europe, VLO Law Firm