Ireland has introduced a formal foreign investment screening regime. The legislation, which entered into force in early 2025, ends the country's previous position as one of the few EU member states without a dedicated national screening mechanism. For non-EU investors holding or seeking to acquire interests in Irish businesses, the consequences of non-compliance are significant: transactions completed without the required notification can be unwound, and penalties apply. International companies should treat this change as a live compliance obligation – not a future risk to monitor.
Ireland's new foreign investment screening regime requires non-EU investors to notify the Minister for Enterprise, Trade and Employment before completing certain acquisitions in designated sectors. The notification obligation is triggered by ownership thresholds set out in investment legislation, and the review period following notification can extend to several months. Transactions closed without prior clearance are at risk of being voided.
This alert explains what changed, which businesses are in scope, and what international companies must do now to manage the compliance risk.
What changed and when it takes effect
Ireland transposed the EU's foreign direct investment screening regulation into domestic law through dedicated investment screening legislation. The regime is now fully operational.
Under Irish investment legislation, the screening authority is the Minister for Enterprise, Trade and Employment, supported by a dedicated screening unit. The regime applies to investments that grant a non-EU investor a meaningful degree of control or influence over an Irish target. The law draws on the EU regulation's architecture, incorporating a coordinated review mechanism that can involve other EU member states and the European Commission in transactions with cross-border relevance.
Several features distinguish the Irish regime from those of neighbouring jurisdictions. First, Ireland opted for a broad sectoral scope rather than a narrow critical infrastructure list. Second, the regime applies both to greenfield investments and to acquisitions of existing businesses. Third, the notification obligation is mandatory – not voluntary – for transactions that meet the threshold criteria. Investors accustomed to the UK's National Security and Investment Act or Germany's investment screening rules will recognise the general structure, but the Irish thresholds and procedures differ in important respects.
The parallel development of investment screening rules in Portugal illustrates a broader EU-wide trend: member states that previously lacked screening mechanisms have moved quickly to implement them. Creating a more complex compliance environment for cross-border capital flows within the single market.
Who is affected: scope, sectors, and thresholds
The screening regime targets foreign direct investment from non-EU and non-EEA investors. Investments by EU or EEA-domiciled entities are not subject to mandatory notification, although the regime includes look-through provisions that can capture transactions structured through EU holding vehicles where the ultimate beneficial owner is non-EU.
The sectors subject to mandatory notification are broad. They include critical infrastructure – energy, transport, water, health, and communications networks – as well as critical technologies such as semiconductors, artificial intelligence, cybersecurity tools, and advanced manufacturing. Defence and dual-use goods, financial infrastructure including payment systems and securities clearing, and media businesses with significant audiences are also in scope. The regime also covers businesses involved in sensitive data processing, including data relating to public health or national security.
The ownership thresholds that trigger mandatory notification are tiered. An acquisition that results in a non-EU investor holding at least a defined minority interest in a qualifying Irish business must be notified. Further notification is required when subsequent acquisitions bring the investor's holding above higher threshold levels. The legislation also captures acquisitions of assets – not just shares – where those assets form part of a qualifying business.
Companies in the affected sectors should map their Irish holdings and pipeline transactions against the threshold criteria without delay. A non-obvious risk exists for investment funds: where a fund acquires a stake in an Irish business that is itself held by a larger fund structure. The look-through analysis can result in notification obligations that were not apparent from the face of the transaction documents. A lawyer in Ireland with experience in cross-border fund structures can assist in identifying whether a notification obligation arises at the fund or portfolio level.
For international businesses considering an IPO, a securities offering, or a capital markets transaction involving an Irish-listed entity, the screening regime adds a layer of pre-transaction disclosure obligations that must be integrated into deal timetables. Prospectus preparation and listing requirements under Irish capital markets legislation must now account for the possibility that a screening review will run in parallel with the listing process.
To receive an expert assessment of your transaction's notification obligations in Ireland, contact us at info@ferrazwhitmore.com.
Immediate actions required
Companies with existing or planned investments in Irish businesses should take the following steps without delay.
- Audit existing holdings. Map all direct and indirect interests in Irish businesses against the sectoral scope and ownership thresholds. Include fund-level and holding-company structures in the analysis.
- Screen pipeline transactions. Any acquisition that has not yet closed should be assessed for notification obligations before signing or closing – not after. Retroactive notifications are not available under the mandatory regime.
- Build screening timelines into deal schedules. The review period following notification can run for several months, including potential extensions where the transaction is referred for detailed assessment. Failure to account for this in deal timetables is a frequent source of delay.
- Apply look-through analysis to fund structures. Identify the ultimate beneficial owner of the acquiring entity and confirm whether the look-through provisions of Irish investment legislation bring the transaction within scope.
- Engage specialist counsel before signing. The consequences of non-notification are severe. Transactions closed without clearance can be unwound by ministerial order. Civil penalties also apply. Engaging a law firm in Ireland with investment screening expertise at the earliest stage of a transaction reduces the risk of a compliance failure.
Companies with banking or financial services operations in Ireland should also consider the interaction between the investment screening regime and existing regulatory obligations under Irish banking and finance legislation. Our team advises on both dimensions. For guidance on the financial services regulatory dimension, see our analysis of banking and finance law in Ireland.
For a tailored strategy on investment screening notification in Ireland, reach out to info@ferrazwhitmore.com.
About Ferraz & Whitmore
Ferraz & Whitmore is an international law firm based in Lisbon, advising business clients across 46 jurisdictions. Our capital markets and investment screening practice covers transactions across Europe, the Americas, and Asia, supporting international investors who need to manage regulatory clearance obligations across multiple legal systems simultaneously. Engaging a lawyer in Ireland through our network gives clients direct access to local screening expertise combined with the cross-border perspective that multi-jurisdictional transactions require. As a law firm in Ireland-facing matters, we advise on notification obligations, deal structuring, and regulatory engagement at every stage of the investment process. The firm's attorneys have experience before Irish regulatory authorities and have advised on investment fund structures, securities offerings, and capital markets transactions subject to disclosure obligations and listing requirements under Irish law. To discuss your transaction and its screening implications, contact us at info@ferrazwhitmore.com.
Disclaimer: This publication is provided for informational purposes only and does not constitute legal advice. The information herein should not be relied upon as a substitute for professional legal counsel tailored to your specific circumstances. Ferraz & Whitmore assumes no liability for actions taken or not taken based on the contents of this material. For advice regarding your particular situation, please contact info@ferrazwhitmore.com.