Updated: July 2026. Reviewed against the Register of Beneficial Ownership (RBO) and SI 110/2019.
A shareholder is the registered legal owner of a company’s shares, while an ultimate beneficial owner (UBO) is the natural person who ultimately owns or controls the company, whether or not their name appears on the share register. The two often overlap, but they are not the same thing, and Irish law records them in two separate places: shareholders in the company’s register of members under the Companies Act 2014, and beneficial owners in the Central Register of Beneficial Ownership (RBO) under SI 110/2019.
This guide explains who counts as a shareholder, who counts as a UBO, the ways control can arise, why the person on the share certificate is not always the beneficial owner, and what founders must file with the RBO in practice.
Who is a shareholder
A shareholder is an individual or a body corporate that owns shares in a company. Ownership carries the right to vote at general meetings, to receive dividends when they are declared, and to a share of any surplus if the company is wound up. In a private company limited by shares, a shareholder’s liability is limited to any amount unpaid on their shares.
Shareholders are recorded in the company’s register of members, a statutory register required under the Companies Act 2014. That register, and the annual return filed with the Companies Registration Office (CRO), is where legal ownership of shares is evidenced. Being a shareholder is a matter of company law, and it is a public, name-on-the-register status.
Who is an ultimate beneficial owner (UBO)
A UBO is a natural person who ultimately owns or controls a company. The concept comes from anti-money laundering law, not company law. In Ireland the filing duty sits under the European Union (Anti-Money Laundering: Beneficial Ownership of Corporate Entities) Regulations 2019 (SI 110/2019), made within the framework of the Criminal Justice (Money Laundering and Terrorist Financing) Act 2010 as amended. The RBO itself was established under Regulation 19 of SI 110/2019.
Under the definition applied by the RBO, a beneficial owner is a natural person who owns or controls, directly or indirectly, more than 25% of the shares, more than 25% of the voting rights, or an ownership interest of more than 25%, or who controls the company through other means. A UBO must always be a human being: the name of another company cannot be entered on the RBO, no matter how many layers of ownership sit above the Irish entity.
The key distinction is this. A shareholder is whoever holds the shares on paper. A UBO is whoever ultimately benefits from or controls the company. A registered shareholder can be a nominee holding shares for someone else, in which case that shareholder is not the beneficial owner. For a fuller treatment of the filing rules, see our guide to RBO beneficial ownership rules.
The five ways control can arise
Owning at least a quarter of the shares is only one route to beneficial ownership. Control can arise in several ways, and a company must consider all of them before deciding who its UBOs are.
Control through shareholding
A person owns more than 25% of the company’s shares, directly or indirectly.
Direct: John owns 30% of Company A. That holding makes him a UBO of Company A.
Indirect: John owns 100% of Company X, and Company X owns 40% of Company A. John is a UBO of Company A through indirect ownership.
Control through voting rights
A person controls more than 25% of the voting rights, regardless of how many shares they hold.
Sarah owns just 10% of Company B’s shares, but a shareholders’ agreement gives her 50% of the voting power. Her voting control makes her a UBO.
Control through an ownership interest
A person holds an ownership interest of more than 25%, for example a right to more than a quarter of the profits or assets, even without shares or voting rights.
Michael holds no shares and no votes in Company C, but a trust arrangement entitles him to 40% of its profits. That interest makes him a UBO.
Control by other means
A person exercises control through mechanisms outside the share register. The RBO explains this by reference to Recital 13 of the Fourth Anti-Money Laundering Directive, which includes control through a shareholders’ agreement, the exercise of dominant influence, or the power to appoint senior management.
Emily is neither a shareholder nor a director of Company D, but a funding agreement lets her approve or veto key strategic decisions. She is a UBO through control by other means.
Senior managing official (the fallback)
If, after exhausting all possible means and provided there are no grounds for suspicion, no natural person can be identified as a UBO, the company must enter its senior managing officials, which SI 110/2019 defines as including a director and the chief executive officer, on the RBO instead. The company must keep records of the steps it took to identify its beneficial owners.
Company E has many small shareholders, none holding more than 25%, and no one controls it by other means. Its CEO is recorded as the beneficial owner by default.
UBO vs shareholder: the comparison at a glance
| Feature | Shareholder | Ultimate beneficial owner (UBO) |
|---|---|---|
| Legal basis | Companies Act 2014 | SI 110/2019, within the Criminal Justice (Money Laundering and Terrorist Financing) Act 2010 framework |
| Where recorded | Company’s register of members and the CRO annual return | Company’s internal beneficial ownership register and the Central RBO |
| Who it can be | An individual or a body corporate | A natural person only |
| Test | Legal ownership of shares | More than 25% of shares, voting rights or ownership interest, or control by other means |
| Can be a nominee | Yes, a shareholder can hold shares for someone else | No, the UBO is the person the nominee holds for |
| Public visibility | Name is publicly visible | Restricted access since the CJEU Sovim ruling (see below) |
Nominee arrangements: why the registered shareholder may not be the UBO
This is where founders most often go wrong. A nominee shareholder is a person or company that appears on the register of members as the holder of shares, while holding them for the benefit of someone else under a nominee agreement. The nominee is the legal shareholder; the person they hold for remains the beneficial owner and, if the 25% threshold or any control test is met, the UBO who must be entered on the RBO.
The practical consequence is that filing the correct shareholder details with the CRO does not satisfy the RBO. A company using a nominee must look through the nominee to the real controller and file that natural person as the beneficial owner. Our nominee company shareholder service is structured around this distinction, and our explainer on nominee directors and shareholders in Ireland sets out how the arrangement works in practice.
Ownership should also not be confused with directorship. A director manages the company but need not own it, and an owner need not be a director. Non-EU founders frequently meet Ireland’s director-residency rule with an EEA-resident director while remaining the beneficial owner themselves, a point covered in our guide to the Section 137 director-residency requirement.
RBO filing in practice: deadlines, who files, and breach
Every relevant entity, meaning a company or industrial and provident society incorporated in Ireland, must keep its own internal beneficial ownership register and file its beneficial ownership details with the Central RBO. A company listed on a regulated market with equivalent disclosure obligations is exempt, but its Irish subsidiaries are not.
A newly incorporated entity has five months from incorporation to make its first RBO filing, under Regulation 20(2) of SI 110/2019. After that, any change to the beneficial ownership details must be kept current on the register. Responsibility rests with the company’s officers, meaning its directors and secretary, not with the beneficial owners personally.
Failure to keep the internal register or to file with the RBO is a breach of statutory duty and a criminal offence under SI 110/2019. Providing information that is false in a material particular, knowing it to be false or being reckless as to whether it is false, is an offence liable on summary conviction to a class A fine (a fine of up to EUR 5,000 under the Fines Act 2010) or up to 12 months’ imprisonment or both, and on conviction on indictment to a fine of up to EUR 500,000 or up to 12 months’ imprisonment or both. Beyond the penalty, an incomplete or inaccurate RBO record commonly stalls bank account openings, payment-provider onboarding and investor due diligence, because those parties check the register as part of their own anti-money laundering checks.
Who can see RBO data in 2026
Access to the RBO changed after the Court of Justice of the European Union ruling of 22 November 2022 (the Sovim case), which struck down unrestricted public access to beneficial ownership data on privacy and data-protection grounds. Access is now tiered. Competent authorities and the Financial Intelligence Unit of An Garda Siochana have full access; designated persons, such as banks and other obliged entities, have restricted access for anti-money laundering due diligence; and general public access to the personal details of beneficial owners remains limited. The beneficial ownership details of minors are withheld from designated-person access until they turn 18.
How this differs from the UK PSC register
Readers arriving from the United Kingdom should note that the UK operates a separate People with Significant Control (PSC) register, maintained through Companies House under UK company law. The 25% threshold looks broadly similar, but the PSC regime is a distinct UK system with its own rules and access arrangements. It does not apply to Irish companies, and it should not be blended with Ireland’s RBO. An Irish company’s obligations are governed only by SI 110/2019.
Frequently asked questions
Is a shareholder always a beneficial owner?
No. A shareholder is a beneficial owner only where they own or control more than 25% of the shares, voting rights or ownership interest, or control the company by other means. A shareholder holding a smaller stake, or holding shares as a nominee for someone else, is not the beneficial owner.
Can a company have a UBO who owns no shares?
Yes. Control can arise through voting rights, an ownership interest, or control by other means such as a shareholders’ agreement or the power to appoint senior management. A person exercising that control is a UBO even if they hold no shares directly.
What is the deadline to file beneficial ownership with the RBO?
A newly incorporated Irish company has five months from its date of incorporation to make its first RBO filing, under Regulation 20(2) of SI 110/2019. Any later change to the beneficial ownership details must be kept up to date on the register.
Who can see RBO beneficial ownership data in 2026?
Following the CJEU Sovim ruling, access is tiered. Competent authorities have full access, designated persons such as banks have restricted access for due diligence, and general public access to beneficial owners’ personal details is limited.
What happens if a company does not file its RBO details?
Failure to file is a breach of statutory duty and a criminal offence under SI 110/2019, with the company and its officers liable to prosecution. Filing information that is false in a material particular can attract, on conviction on indictment, a fine of up to EUR 500,000. In practice, a missing or inaccurate record also delays banking and investor checks.
Getting your ownership structure right from day one
Founders who map their shareholders and their beneficial owners at the point of incorporation avoid the most common cause of banking and investor delays later. If you are forming an Irish company as a non-resident, our non-resident company formation package includes the RBO filing alongside the CRO incorporation, or you can contact us to talk through your ownership structure first. For the full formation checklist, see our non-resident company formation requirements guide.
Written by Olha Bespalova, CoSec and Legal Officer at Chern & Co. Reviewed by Alex Chernenko, CEO and Founder, Chern & Co. Content accurate as of July 2026 under SI 110/2019 and the Companies Act 2014.
Disclaimer: this article is general guidance only and is not legal or tax advice.
