Belgium';s mergers and acquisitions market entered the final quarter of the year with a sharper regulatory environment, tighter foreign investment screening and continued evolution in deal structuring practice. For international buyers, sellers and investors active in belgium m&a 2025, understanding these shifts is not optional - it is a prerequisite for closing transactions efficiently. This guide covers the most significant legal developments, enforcement signals, deal mechanics and practical implications for cross-border M&A activity in Belgium during the period.
The Belgian regulatory landscape for M&A has grown more layered in recent periods. Three overlapping frameworks now require attention on virtually every significant transaction: competition clearance, foreign direct investment screening and sector-specific licensing.
The Belgian Competition Authority (BCA) continued to apply its merger control rules under the Belgian Code of Economic Law with notable rigour. The BCA reviews concentrations that meet Belgian turnover thresholds, and it has shown a willingness to open Phase II investigations in sectors it considers sensitive, including digital infrastructure, healthcare and logistics. Parties that underestimate the BCA';s appetite for detailed market analysis risk delays of several months beyond the standard review period.
Foreign direct investment screening under the Belgian interfederal screening mechanism, introduced by the law of recent years and progressively refined, has become a material factor in deal timelines. The mechanism applies to investments by non-EU acquirers in critical sectors - energy, telecommunications, digital infrastructure, water, transport and defence-related activities. The screening committee, which coordinates across federal and regional authorities, can impose conditions or block transactions. In practice, many deals now require a parallel FDI filing alongside any competition notification, adding complexity to the pre-signing phase.
Sector regulators also remain active. The Financial Services and Markets Authority (FSMA) oversees public takeover bids and mandatory bid obligations under the Belgian Takeover Law. The National Bank of Belgium (NBB) plays a role in financial sector acquisitions. Buyers acquiring regulated entities must factor in the time and documentation burden of obtaining regulatory pre-approval, which can run from several weeks to several months depending on the sector.
Belgian M&A practice in the period reflected broader European trends while retaining distinctly Belgian characteristics rooted in the Companies and Associations Code (CAC), which governs the legal mechanics of share and asset transfers, mergers and demergers.
Locked-box pricing mechanisms continued to gain ground over traditional completion accounts, particularly in private equity-driven transactions. Sellers prefer the certainty of a fixed economic transfer date, while buyers have grown comfortable with the model provided that leak protections are tightly drafted. Belgian counsel increasingly negotiate detailed permitted leakage schedules that account for management fees, intercompany dividends and tax group settlements specific to Belgian corporate structures.
Warranty and indemnity (W&I) insurance penetration in Belgian mid-market deals has increased markedly. Insurers active in the Belgian market have become more familiar with Belgian-specific risks, including the liability regime under the CAC, environmental obligations under regional legislation and employment protections under the Act on Employment Contracts. This familiarity has reduced premium loading for Belgian-specific risks, making W&I a viable tool even on transactions below EUR 50 million in enterprise value.
Earn-out provisions have appeared more frequently in sectors where valuation uncertainty is high, particularly in technology, life sciences and professional services. Belgian courts have addressed earn-out disputes in recent case law, generally applying a strict contractual interpretation and placing the burden of proof on the party claiming that earn-out conditions were met. Practitioners should draft earn-out definitions with precision, specifying accounting standards, adjustment mechanisms and the obligations of the buyer to operate the target in a manner consistent with earn-out achievement.
A non-obvious requirement that catches foreign buyers is the Belgian notarial deed requirement for certain asset transfers and for statutory mergers under the CAC. Share transfers in a private limited company (BV/SRL) do not require notarisation, but statutory cross-border mergers and certain real estate-heavy asset deals do. Failing to account for notarial scheduling and fees in the transaction timeline is a common mistake among international teams unfamiliar with Belgian practice.
Employment law is one of the most consequential areas of Belgian M&A practice, and it generates a disproportionate share of post-closing disputes. Belgium';s labour framework is among the most protective in the EU, and its interaction with M&A transactions is governed by a combination of the Collective Bargaining Agreement No. 32bis (CBA 32bis) on the transfer of undertakings, sector-level collective agreements and the Act on Employment Contracts.
CBA 32bis implements the EU Acquired Rights Directive in Belgium and provides that employees automatically transfer to the buyer in an asset deal, with their existing terms and conditions preserved. In practice, this means buyers must conduct thorough due diligence on the target';s workforce, including headcount, individual contracts, applicable sector joint committees, bonus arrangements and any pending social disputes. Belgium';s joint committee system - which determines the applicable collective agreement based on the employer';s primary activity - can create complications when a buyer';s existing business falls under a different joint committee than the target.
Information and consultation obligations with works councils and trade union delegations are mandatory before closing in transactions that qualify as a transfer of undertaking or a significant restructuring. The timing of these consultations must be built into the deal timetable. Failure to comply can expose the buyer to criminal liability and civil claims, not merely procedural delay. In practice, founders and management teams often underestimate the time required to complete meaningful consultation, particularly where the workforce is unionised and the relevant joint committee is active.
Pension and supplementary benefits due diligence has grown in importance. Belgian group insurance arrangements, which are common vehicles for supplementary pensions, carry minimum guaranteed return obligations under the Law on Supplementary Pensions (WAP/LPC). Buyers must assess whether the target';s group insurance policy meets these obligations and whether any shortfall exists. A funding gap in a group insurance arrangement can represent a material undisclosed liability.
If you are structuring an acquisition that involves a Belgian workforce, early engagement with specialist counsel is advisable. We can assist with employment due diligence, consultation strategy and post-closing integration planning. Contact us at info@vlolawfirm.com.
The BCA';s enforcement posture during the period reinforced its position as an active and independent authority. Beyond merger control, the BCA continued to pursue cartel investigations and abuse of dominance cases, some of which have implications for M&A activity where a target is under investigation or where a proposed concentration raises horizontal overlap concerns.
In merger control, the BCA applies the substantive test of whether a concentration would significantly impede effective competition in the Belgian market or a substantial part of it. The authority has shown particular interest in transactions involving digital platforms, data-rich businesses and markets with high concentration ratios. Parties to such transactions should prepare detailed competitive analysis and consider whether remedies - structural or behavioural - may be required to obtain clearance.
The interaction between Belgian merger control and EU merger control under the EU Merger Regulation requires careful analysis. Where a transaction meets EU thresholds, the European Commission has exclusive jurisdiction and Belgian filing is not required. However, the Commission may refer a case to the BCA where the concentration primarily affects Belgian markets. Parties should assess jurisdictional thresholds at an early stage to avoid parallel filings or missed notifications.
A common mistake among foreign acquirers is to assume that a transaction below EU thresholds does not require Belgian filing. The Belgian thresholds are set at a level that captures a significant number of mid-market transactions, and failure to notify a notifiable concentration is a serious infringement that can result in fines and, in theory, the unwinding of the transaction. Pre-notification contacts with the BCA are available and are strongly recommended for complex cases.
Recent BCA decisions have also addressed gun-jumping - the implementation of a concentration before clearance is obtained. Belgian law prohibits gun-jumping, and the BCA has signalled that it will pursue cases where parties have exchanged commercially sensitive information or integrated operations prematurely. Deal teams should implement robust information barriers and hold-separate arrangements from signing until clearance is received.
Tax considerations remain central to deal structuring in Belgium, and the fiscal environment has continued to evolve. Belgium';s participation exemption regime, which exempts qualifying dividends and capital gains on shares from corporate income tax subject to conditions, is a key driver of deal structure. Most Belgian M&A transactions are structured as share deals rather than asset deals, partly because of the participation exemption and partly because asset deals trigger transfer taxes and VAT on certain asset categories.
The Belgian tax authorities (SPF Finances / FOD Financiën) have increased scrutiny of M&A-related tax structures, particularly those involving holding companies, intercompany financing and step-up arrangements. The general anti-abuse provision in the Belgian Income Tax Code allows the tax authorities to recharacterise transactions that lack genuine economic substance. Buyers relying on complex holding structures to optimise the tax treatment of an acquisition should obtain a binding ruling from the Ruling Commission (Service des Décisions Anticipées / Dienst Voorafgaande Beslissingen) where possible.
Transfer pricing is a significant area of risk in cross-border Belgian acquisitions. Belgium has adopted the OECD Transfer Pricing Guidelines and requires arm';s-length pricing for intercompany transactions. Post-acquisition integration often involves restructuring intercompany arrangements, and buyers should assess whether existing transfer pricing documentation is adequate and whether post-closing changes will trigger transfer pricing exposure.
Real estate-heavy transactions require attention to the Belgian registration tax (droits d';enregistrement / registratierechten), which applies to transfers of Belgian real property. The rate varies by region - Brussels, Flanders and Wallonia each set their own rates - and the applicable rate can have a material impact on deal economics in asset deals or in transactions structured to include real property transfers. Many underestimate the regional variation in real estate transfer costs when modelling deal economics.
Fiscal due diligence should also cover Belgian VAT grouping arrangements, which allow related entities to be treated as a single VAT taxpayer. Acquiring a member of a VAT group without understanding the group';s VAT position can expose the buyer to joint and several liability for VAT debts of other group members.
Cross-border transactions involving Belgian targets or Belgian buyers present a distinct set of practical challenges that go beyond the legal framework. Understanding these challenges in advance reduces the risk of delays, cost overruns and post-closing disputes.
Due diligence scope in Belgian transactions should be broader than in some comparable jurisdictions. Belgian corporate law, employment law, environmental law (which is largely regionalised between Brussels, Flanders and Wallonia), and real estate law each require specialist input. Environmental liability in particular can be significant: Flemish, Walloon and Brussels environmental legislation each impose different obligations on landowners and operators, and soil contamination liability can attach to a buyer even where contamination predates the acquisition.
Language is a practical consideration that international teams sometimes overlook. Belgium has three official languages - French, Dutch and German - and the language of corporate documents, employment contracts and regulatory filings depends on the region in which the entity is established. Due diligence on a Flemish company will involve Dutch-language documents; a Walloon target will involve French. Ensuring that the deal team has appropriate language coverage is a basic but important step.
Timing expectations should be calibrated carefully. A straightforward private share deal with no regulatory filings can close in four to eight weeks from signing if due diligence is complete. Add a BCA merger control filing and the timeline extends by at least four to six weeks for a Phase I clearance. Add an FDI screening notification and the timeline may extend further. Add employment consultation obligations and the timetable must accommodate the consultation period, which varies by workforce size and union activity.
In practice, founders should consider that Belgian sellers - particularly family-owned businesses, which remain a significant segment of the Belgian M&A market - often have strong preferences regarding deal structure, employee treatment and continuity of the business. Addressing these preferences early in negotiations can prevent late-stage complications.
For international buyers navigating Belgian regulatory filings, employment consultations and tax structuring simultaneously, coordinated legal advice is essential. We can help structure the acquisition process correctly from the outset. Contact us at info@vlolawfirm.com.
What are the main regulatory approvals required for a significant M&A transaction in Belgium?
Most significant transactions require analysis of at least three regulatory tracks: Belgian competition clearance from the BCA if turnover thresholds are met, FDI screening if the buyer is non-EU and the target operates in a critical sector, and sector-specific approval if the target is a regulated entity supervised by the FSMA or NBB. Each track has its own timeline and documentation requirements. Parties should map all applicable filings at the term sheet stage to avoid surprises. Coordinating parallel filings requires careful project management, as the slowest approval typically determines the overall closing timeline.
How long does a typical Belgian M&A transaction take from signing to closing?
A private share deal with no regulatory filings can close in four to eight weeks from signing, assuming due diligence is substantially complete before signing. A transaction requiring BCA merger control clearance adds at least four to six weeks for a Phase I review, with Phase II potentially extending the process by several months. FDI screening adds further time. Employment consultation obligations, where applicable, must be completed before closing and can add several weeks depending on the workforce and union dynamics. Buyers should build realistic timelines into their transaction documents, including long-stop dates that account for regulatory risk.
Should a Belgian acquisition be structured as a share deal or an asset deal?
The answer depends on the specific circumstances, but share deals are more common in Belgium for several reasons. The participation exemption can shelter capital gains on qualifying shares from Belgian corporate income tax, making a share exit attractive for sellers. Asset deals trigger registration duties on real property and VAT on certain asset categories, increasing transaction costs. However, asset deals allow buyers to cherry-pick assets and liabilities and avoid inheriting unknown liabilities. In regulated sectors, an asset deal may avoid the need for a change-of-control approval. Tax, legal and commercial considerations must be weighed together, and the preferred structure often emerges from negotiation between the parties.
Belgium';s M&A environment in the final quarter of the year was defined by active regulatory oversight, evolving deal practice and a demanding employment law framework. Buyers and sellers who engage with these dynamics early - mapping regulatory filings, structuring employment consultations and stress-testing tax assumptions - are better positioned to close transactions on time and on terms.
VLO Law Firms advises international clients on M&A matters in Belgium. We can assist with regulatory filings, due diligence coordination, deal structuring, employment consultation strategy and post-closing integration. To request a consultation, contact: info@vlolawfirm.com