What Is the Register of Beneficial Owners in Greece (2026), Who Must File, Thresholds & Penalties

Understanding what is the register of beneficial owners in Greece is now a front-line compliance priority for every entity incorporated or taxed in the country. The register, officially the Central Register of Beneficial Owners (Κεντρικό Μητρώο Πραγματικών Δικαιούχων), is a national database administered through the GSIS platform that requires legal entities to declare the natural persons who ultimately own or control them, using a 25 % ownership-or-control threshold set out in Law 4557/2018. In 2026 the compliance landscape has shifted further: the EU’s Beneficial Ownership Registers Interconnection System (BORIS) now links national registers across member states, and a new legitimate-interest access standard means that a wider range of parties, from journalists to civil-society organisations, may request UBO data.

This guide sets out exactly who must file, which documents are needed, the deadlines that apply, how the 2026 EU access rules work and the penalties for getting it wrong.

Legal basis and scope of the register of beneficial owners in Greece

Key point: Greece’s UBO register is anchored in Law 4557/2018, which transposed the EU’s Fourth Anti-Money Laundering Directive (AMLD4) and was subsequently updated to align with AMLD5. The law applies to every corporate and legal entity registered or taxed in Greece, together with certain legal arrangements.

Law 4557/2018, formally titled “Prevention and Suppression of Money Laundering and Terrorist Financing,” introduced the obligation for legal entities and legal arrangements with a nexus to Greece to collect, hold and register adequate, accurate and up-to-date information on their beneficial owners. The law was supplemented by a series of ministerial decisions and GSIS circulars that set out the electronic filing procedure, accepted document formats and verification obligations.

The scope of the register covers a broad range of entities. All companies incorporated under Greek law, including sociétés anonymes (AE), limited liability companies (EPE), private companies (IKE) and general or limited partnerships (OE / EE), must file. Greek branches of foreign companies are also captured when they hold a Greek tax registration number. Beyond commercial entities, the law reaches non-profit associations, foundations, civil-law partnerships and, where they are administered or have their principal place of business in Greece, trusts and similar legal arrangements.

This wide net means that the register intersects with several other regulatory filings. Companies that are starting a business in Greece must factor UBO registration into their post-incorporation checklist alongside commercial-registry (GEMI) filings, tax registrations and, for entities with real-estate holdings, any obligations triggered by recent Greece property law changes in 2026.

Who must file in the central register of beneficial owners Greece

Key point: Filing responsibility falls on the entity’s legal representative, a board-appointed officer, or an authorised accountant or lawyer. The obligation sits with the entity itself, not the beneficial owner.

Under Law 4557/2018 and the accompanying GSIS guidance, the person who submits the UBO declaration to the central register of beneficial owners Greece is the entity’s legal representative, typically the managing director for an AE, or the administrator for an IKE or EPE. Alternatively, the entity may designate an authorised representative (such as its accountant or corporate-services provider) who files through the GSIS portal using their own TAXISnet credentials and a digital authorisation.

The entity must also maintain an internal special register of beneficial owners at its registered office. This internal record must be kept current and made available on request to competent authorities, the Hellenic Financial Intelligence Unit and obliged entities (such as banks) conducting customer due diligence.

Reporting obligations by entity type

Entities hiring foreign staff should also be aware that immigration and HR compliance filings, such as the seasonal worker visa process in Greece, are separate from the UBO register but may trigger changes that require a UBO update (for example, a new director who is also a shareholder).

Defining the beneficial owner, 25 % threshold and control tests

Key point: A beneficial owner is any natural person who ultimately owns or controls a legal entity. Law 4557/2018 sets the primary indicator at 25 % of ownership, shares, or voting rights, but control by other means also triggers disclosure.

The three-tier identification test

Under Law 4557/2018, identifying the beneficial owner follows a cascading test applied to corporate entities:

1. Direct or indirect ownership of more than 25 %. Any natural person who holds, directly or through a chain of intermediary entities, more than 25 % of the shares, voting rights, or ownership interest in the entity is a beneficial owner.
2. Control by other means. Where the 25 % threshold is not met, or where additional natural persons exercise control through contractual arrangements, shareholder agreements, rights of veto or the power to appoint or remove a majority of the board, those persons must also be disclosed.
3. Senior managing official. If, after exhausting the first two steps, no natural person is identified, the entity must declare its senior managing official (typically the managing director or CEO) as the beneficial owner.

Practical examples

• Direct 30 % shareholder. A natural person holds 30 % of an IKE directly. They exceed the 25 % threshold and must be declared as a beneficial owner.
• Chain ownership. Person A owns 60 % of Company X, which in turn owns 50 % of Company Y (a Greek AE). Person A’s indirect stake in Company Y is 30 % (60 % × 50 %), exceeding 25 %. Person A must be declared as the beneficial owner of Company Y.
• Control via contractual arrangements. Two shareholders each hold 20 % of a Greek EPE, neither breaches the 25 % threshold individually. However, one shareholder has a contractual right to appoint three of the company’s five directors, giving them effective control. That shareholder must be disclosed under the “control by other means” limb.

For entities that need to map complex ownership structures, the starting point is an ownership-chain diagram that traces every intermediate entity back to the natural persons at the top. The diagram should show percentage holdings at each level and flag any contractual or governance arrangements that confer control.

Documents required and how to file, portal walkthrough

Key point: Filing is done electronically through the GSIS TAXISnet portal. A complete submission requires the entity’s tax credentials, identification documents for each beneficial owner and evidence of the ownership or control chain.

Document checklist

• TAXISnet credentials. The legal representative or authorised person must log in with their personal TAXISnet username and password, linked to a valid digital authorisation for the filing entity.
• Identification documents. Copies of passports or Greek identity cards for each declared beneficial owner. For non-Greek nationals, a valid passport is required.
• Tax identification numbers. The Greek AFM of each beneficial owner (or, for non-residents, the tax identification number of their country of residence). Companies wondering how to get an AFM number in Greece should address this before filing.
• Shareholder register or ownership evidence. The current shareholder register, partnership agreement, or foundation charter showing each owner’s percentage holding.
• Ownership-chain diagram. For indirect ownership, a structure chart tracing the chain from the entity to each natural person, with percentage stakes annotated at every level.
• Corporate extracts. GEMI extracts or equivalent foreign-company registry certificates confirming the incorporation and current directors of each intermediate entity in the chain.
• Board minutes or resolutions. Where control arises through governance rights rather than ownership, minutes or board resolutions evidencing the appointment or veto powers.
• Declarations. A signed declaration by the legal representative confirming that the information submitted is accurate and complete.

Step-by-step portal filing process

1. Navigate to the GSIS beneficial-ownership portal via gov.gr and select Μητρώο Πραγματικών Δικαιούχων.
2. Log in using your TAXISnet credentials and select the filing entity by its tax number (AFM).
3. Choose “New Declaration” or “Amend Existing Declaration” as appropriate.
4. Enter the details for each beneficial owner: full name, date of birth, nationality, country of residence, tax identification number, type of ownership or control, and percentage held.
5. Upload supporting documents in PDF format (maximum file size is typically 5 MB per document). Name files clearly, for example, Passport_JohnSmith.pdf or ShareRegister_2026.pdf.
6. Review the draft (the portal saves a draft that remains accessible for a limited period).
7. Submit the declaration. A confirmation e-mail and filing receipt are generated automatically.
8. Retain the filing receipt alongside the entity’s internal special register.

Industry observers expect the GSIS portal interface to be updated later in 2026 to align with the BORIS data-field requirements, so filers should check the gov.gr portal page for any revised templates before each submission.

Deadlines, updating obligations and timelines

Key point: Entities must update their UBO declarations within 60 days of any change in beneficial ownership. Annual confirmation is also required even when no changes have occurred.

Under the ministerial decisions implementing Law 4557/2018, the following deadlines apply:

• Initial registration. Newly incorporated entities must file their first UBO declaration within 60 days of incorporation and registration with GEMI.
• Change of beneficial ownership. Any change, a share transfer, new director who triggers the control test, change of trustee, must be reflected in an updated declaration filed within 60 days of the change taking effect.
• Annual confirmation. Even if no changes have occurred, entities are required to confirm the accuracy of their existing declaration each year, typically aligned with the annual corporate-tax-return filing period. The GSIS portal issues reminders, but the obligation rests with the entity.

Sample timeline

Missing any of these deadlines exposes the entity to the penalty regime discussed below. Entities involved in property transfers in Greece should be especially vigilant, because a conveyance that changes the ownership chain will trigger a UBO update obligation running concurrently with land-registry formalities.

Access rules in 2026, BORIS, legitimate-interest access and what changed

Key point: The 2026 EU reforms replaced unrestricted public access with a tiered system. Competent authorities and obliged entities retain full access; other persons must demonstrate a “legitimate interest” to view UBO data. Cross-border access is facilitated by the BORIS interconnection system.

The shift from public access

Until the Court of Justice of the European Union ruled in late 2022 that blanket public access to UBO registers was disproportionate, most EU member states, Greece included, allowed anyone to search the register. The EU’s subsequent AML legislative package replaced that open-access model with a graduated framework:

• Competent authorities (financial intelligence units, tax authorities, law-enforcement agencies) retain full, unrestricted access to all UBO data, including historical records.
• Obliged entities (banks, financial institutions, notaries, auditors, lawyers performing due diligence) access UBO data as part of their customer-due-diligence obligations.
• Persons with a legitimate interest, a category that includes journalists, civil-society organisations and academic researchers, may apply to access UBO information by demonstrating a connection to anti-money-laundering, counter-terrorist-financing, or associated predicate offences.

BORIS interconnection

The Beneficial Ownership Registers Interconnection System (BORIS), built under Commission Implementing Regulation (EU) 2021/369 and subsequent technical specifications, links the national UBO registers of all EU member states. Greece’s central register of beneficial owners is connected to BORIS through the European e-Justice portal. The practical effect for Greek companies is twofold:

• Cross-border visibility. A competent authority in France or Germany can now query the Greek register directly, rather than relying on mutual legal assistance requests. This accelerates cross-border investigations and supervisory checks.
• Historical data. Under the 2026 framework, BORIS enables access to historical records, not just the current snapshot. Early indications suggest that regulators will use this capability to trace ownership changes over time, increasing the audit risk for entities that have been slow to update their filings.

What Greek companies should do

The legitimate-interest access regime means that UBO data is no longer hidden behind a bureaucratic wall. Industry observers expect that investigative journalists and anti-corruption NGOs will increasingly use the legitimate-interest pathway to request Greek UBO information, particularly for entities with complex or opaque ownership structures. Companies should therefore:

• Ensure all UBO data on file is accurate and up to date, discrepancies discovered by a third-party requester can trigger regulatory scrutiny.
• Review whether any beneficial owners are entitled to request restrictions on access under the limited exemption provisions (e.g., where disclosure would expose the individual to a disproportionate risk).
• Maintain an internal audit trail so that any historical query via BORIS can be answered promptly.

Penalties, enforcement and common compliance mistakes

Key point: Failure to file, filing inaccurately, or filing late exposes entities and their legal representatives to administrative fines and, in serious cases, criminal sanctions under Law 4557/2018.

Law 4557/2018 and the accompanying ministerial decisions establish a layered penalty regime:

• Administrative fines. The GSIS and competent supervisory authorities may impose fines on entities that fail to file, file incomplete or inaccurate information, or miss the 60-day update deadline. Fines are calibrated to the seriousness and duration of the breach.
• Criminal sanctions. In cases involving deliberate concealment of beneficial-ownership information, particularly where the concealment facilitates money laundering or terrorist financing, the legal representative and, in certain circumstances, the beneficial owner may face criminal prosecution under the penalty provisions of Law 4557/2018.
• Operational consequences. Entities whose UBO filings are incomplete or overdue may encounter difficulties obtaining tax-clearance certificates, completing notarised transactions and passing due-diligence checks by banks or counterparties. The likely practical effect is that an outdated UBO filing becomes a blocking issue for routine commercial activity.

Common mistakes to avoid

• Incomplete ownership chains. Filing the direct shareholder without tracing indirect ownership back to the natural person is the single most common error.
• Ignoring the “control by other means” test. Entities focus on percentage thresholds and overlook control exercised through shareholder agreements, veto rights or the power to appoint directors.
• Late annual confirmations. Even when nothing has changed, the annual confirmation must be filed on time. A failure to confirm is treated the same as a failure to file.
• Using outdated identification documents. Expired passports or old addresses for beneficial owners can invalidate a submission.

If an entity receives a notification of non-compliance from the GSIS or a competent authority, the recommended response is to: (1) verify the current status of the UBO filing on the portal, (2) correct any inaccuracies and upload current documents within the remediation period specified in the notice, (3) retain proof of the corrected filing, and (4) seek legal advice if the notice indicates a potential criminal referral.

Practical compliance checklist and sample filing timeline

The following 12-point checklist covers the end-to-end process for a typical Greek entity filing or updating its beneficial-ownership declaration:

1. Confirm the entity’s current GEMI registration and tax status.
2. Map the full ownership chain from the entity to all natural persons, noting percentage stakes at each level.
3. Apply the three-tier identification test (25 % ownership → control by other means → senior managing official).
4. Collect identification documents (passports, IDs) and tax numbers for each beneficial owner.
5. Prepare or update the ownership-chain diagram with annotations.
6. Obtain corporate extracts and board minutes for any intermediate entities.
7. Draft the legal representative’s accuracy declaration.
8. Log in to the GSIS portal via gov.gr and select the correct entity.
9. Enter all beneficial-owner data fields and upload supporting documents in PDF format.
10. Review the draft submission for accuracy before final submission.
11. Submit and download the filing receipt; store alongside the entity’s internal special register.
12. Set a calendar reminder for the annual confirmation deadline and for the 60-day window following any future change.

For entities that need to obtain police clearance in Greece or other official certificates alongside their UBO filing, co-ordinating all compliance tasks into a single administrative window reduces the risk of missed deadlines.

Key takeaways

The register of beneficial owners in Greece is not a one-time filing, it is a continuous compliance obligation that requires accurate data, timely updates and awareness of the evolving EU access framework. Three actions should sit at the top of every compliance officer’s list in 2026:

1. Audit existing filings now. Verify that every UBO declaration on the GSIS portal is complete, up to date, and traces the ownership chain to the natural person level.
2. Prepare for legitimate-interest requests. With BORIS live and the legitimate-interest access pathway operational, third parties can now request UBO data, ensure your records can withstand external scrutiny.
3. Calendar all deadlines. The 60-day update window and the annual confirmation are both hard deadlines with real penalty exposure. Automate reminders.

Sources

1. Gov.gr, Central Register of Beneficial Owners
2. Law 4557/2018 (English translation), Hellenic FIU
3. GSIS, UBO Register Guidance
4. EUR-Lex, BORIS Implementing Regulation (EU) 2021/369
5. OpenOwnership, Designing Access Regimes for Beneficial Ownership Information