Competition Law in Belgium

A European manufacturer acquires a long-standing supplier in Belgium and, within months, receives a dawn raid notice from the national competition authority. The files are sealed. Emails are frozen. The clock is running. What happens next depends almost entirely on decisions that should have been made before the transaction closed.

Competition law in Belgium is enforced by the Belgische Mededingingsautoriteit / Autorité belge de la Concurrence (Belgian Competition Authority. BCA), operating under a body of competition legislation aligned with EU rules but with distinct national procedures. Businesses meeting defined turnover thresholds must notify concentrations before implementation. Conduct involving market dominance or cartel activity can trigger fines, behavioural remedies, and follow-on civil claims without prior warning.

This page sets out the primary instruments, procedural timelines, common pitfalls for international clients, and the cross-border strategy considerations that apply when Belgian competition law intersects with EU and Portuguese dimensions.

The Belgian competition regulatory system and why it matters for international businesses

Belgian competition legislation mirrors the substantive provisions of EU competition rules on agreements restricting competition and on abuse of market dominance. However, the BCA operates as a fully independent authority with its own investigative powers, separate from the European Commission. A business facing parallel investigations – one at EU level and one before the BCA – confronts two distinct procedural regimes simultaneously.

The BCA is structured in two separate bodies. The College of Competition Prosecutors handles investigations. The Competition College acts as the decision-making body. This separation matters in practice: the investigation phase and the adjudication phase are conducted by different officials, which gives the procedure a quasi-judicial character that international clients trained in common law systems may find unfamiliar.

Belgian competition legislation covers four main categories of concern. First, prohibited agreements – cartels and other arrangements that restrict competition. Second, abuse of a dominant position by a single undertaking. Third, merger control – the pre-notification of concentrations that meet Belgian turnover thresholds. Fourth, market inquiries, which the BCA may open on its own initiative to assess structural conditions in a given sector.

Enforcement risk is not evenly distributed. Cartel cases draw the heaviest sanctions. Market dominance cases are increasingly active in digital markets and platform sectors. Merger control is procedurally demanding but generally predictable if the notification is prepared correctly. For an international business operating in Belgium, understanding which category applies to its conduct – and when – is the starting point for any meaningful risk assessment.

The BCA may open an investigation on the basis of a complaint, a leniency application, a sector inquiry, or its own initiative. Dawn raids – unannounced inspections of business premises – can be conducted with judicial authorisation. During a raid, investigators may seize physical and electronic documents and interview personnel. The window for a meaningful legal response begins before any such action takes place, not after it.

Key legal instruments: merger notification, cartel rules, and dominance enforcement

Belgian competition law provides three principal instruments through which the BCA intervenes in market conduct. Each instrument carries its own triggering conditions, procedural sequence, and consequence set.

Merger notification. A concentration must be notified to the BCA when both parties meet Belgian turnover thresholds set out in competition legislation. The notification must be filed before implementation. Standstill obligations apply: the parties may not complete the transaction until clearance is granted or the review period expires without a decision. Failure to notify – or implementing the transaction in breach of the standstill – constitutes a separate infringement. The BCA has power to impose fines for gun-jumping independently of the substantive assessment of the merger itself.

Phase I review takes up to 40 working days. If the BCA raises concerns that cannot be resolved in Phase I, the case moves to a more detailed Phase II review, which extends the timeline by a further period set under competition legislation. In practice, straightforward notified concentrations with no horizontal overlaps are cleared in Phase I without remedies. Cases involving significant market shares or vertical concerns require careful pre-notification dialogue with the BCA.

A non-obvious pitfall arises at the threshold stage. International clients often assess only global or EU turnover when evaluating notification requirements. Belgian thresholds apply to turnover generated in Belgium. A transaction that falls below EU merger regulation thresholds may still require Belgian notification, particularly where both parties have meaningful Belgian revenues. Overlooking this leads to a post-completion notification – which is itself a reportable infringement.

Cartel rules and prohibited agreements. Under Belgian competition legislation, agreements between undertakings that appreciably restrict competition are prohibited. This applies to both horizontal agreements – between competitors – and vertical agreements, such as resale price maintenance or exclusive dealing arrangements. The prohibition applies regardless of whether the agreement was formalised in writing. Informal understandings, coordinated pricing calls, and information-sharing between sales representatives can all constitute infringement.

The BCA's investigative tools are broad. It may request information from undertakings, conduct dawn raids, and interview individuals. Individuals – including employees and officers – can face personal consequences in some circumstances, though the primary enforcement mechanism targets the undertaking. Fines are calculated as a percentage of relevant turnover, capped under competition legislation, and can reach significant amounts for sustained or serious infringements.

The leniency programme offers a structured route to reduced or eliminated fines for cartel participants who come forward with information before or during an investigation. A first applicant who provides qualifying evidence before the BCA has sufficient information to conduct a dawn raid may receive full immunity from fines. Subsequent applicants receive graduated reductions. The leniency programme is a critical strategic tool – but timing is decisive. A business that waits while others apply loses its priority position entirely.

For a tailored strategy on cartel risk or leniency positioning in Belgium, reach out to info@ferrazwhitmore.com.

Abuse of market dominance. A business holding a dominant position in a relevant market bears special responsibilities under Belgian competition legislation. Conduct that would be lawful for a non-dominant player may constitute an abuse when adopted by a dominant undertaking. Common examples include predatory pricing, refusal to supply essential inputs, exclusive dealing arrangements that foreclose competitors, and loyalty rebate schemes. The BCA assesses dominance by reference to market share, barriers to entry, buyer power, and other structural factors.

Dominance cases are frequently complex. They require both a market definition exercise – identifying the relevant product and geographic market – and a conduct analysis. International clients in platform businesses, pharma, infrastructure, and telecommunications face heightened scrutiny. A business with market share above a certain level in its sector should conduct a periodic internal audit of its commercial practices, before the BCA does it for them.

The BCA may impose interim measures in urgent cases. It may also accept commitments offered by the investigated party. Commitment decisions avoid a formal finding of infringement but bind the undertaking going forward. Violation of commitments is itself an infringement. For businesses seeking to manage reputational and financial risk, commitment procedures can be an attractive alternative to contested proceedings – provided the commitments are carefully drafted.

Companies involved in related corporate disputes in Belgium should also consider how competition findings can interact with shareholder or contractual liability. Our corporate disputes practice in Belgium addresses that intersection directly.

Practical insights: what international clients frequently get wrong

Belgian competition enforcement produces a recurring set of errors by international clients. These errors are not the result of bad faith. They arise from applying the practices of other jurisdictions – or internal compliance templates designed for larger markets – to Belgian conditions.

Treating Belgian notification as automatic if EU thresholds are missed. The analysis must be done from the bottom up: Belgian thresholds first, then EU. Many M&A teams route the competition review through Brussels-level counsel without separately assessing Belgian domestic thresholds. The consequence is a failure to notify in time or at all.

Inadequate dawn raid protocols. International groups often have global dawn raid policies that assume a single legal system. In Belgium, the specific rules on access, legal privilege, and the right to request legal advice during a raid have particular procedural characteristics. Employees who have never received specific training are the most significant risk. A poorly managed first hour of a raid can limit the firm's ability to contest the investigation later.

Underestimating information exchange risks. Trade associations in Belgium, as in other EU member states, are a significant source of competition risk. Discussions of pricing, output, customer allocation, or market conditions at association meetings – even informally – can give rise to liability. International clients who participate in Belgian trade bodies without local competition counsel involvement routinely underestimate this exposure.

Failing to assess vertical arrangements. Distribution agreements, exclusivity clauses, and pricing policies imposed on Belgian distributors or retailers are subject to Belgian and EU competition law. A global template distribution agreement that has been cleared by headquarters counsel in another jurisdiction may contain provisions that are problematic under Belgian conditions. The most common issue is pricing coordination – particularly when digital platforms are used to monitor and enforce resale pricing.

Missing the follow-on civil exposure. A BCA infringement decision creates a strong presumption in subsequent civil proceedings before Belgian courts. Claimants – typically direct or indirect purchasers who suffered loss from cartel overcharges – can rely on the infringement finding to establish liability. The civil litigation that follows an administrative decision often exceeds the fine in its total cost to the infringing undertaking. Businesses that settle or do not contest BCA proceedings without considering civil exposure can face a second, larger financial consequence.

Cross-border and strategic considerations: EU dimension and Portuguese nexus

Belgian competition law does not operate in isolation. The relationship between BCA enforcement and European Commission jurisdiction is governed by EU rules on the allocation of cases between national and EU authorities. Where a cartel or dominance case affects trade between EU member states to a significant degree, the European Commission may assert jurisdiction. The BCA and the Commission may also cooperate within the European Competition Network, sharing information and coordinating parallel investigations.

For businesses with operations across multiple EU markets, a BCA investigation frequently signals the possibility of Commission interest. The reverse is also true: a Commission investigation into a cartel with Belgian participants may prompt the BCA to open its own inquiry into conduct with purely Belgian effects. International groups must manage these proceedings as a coordinated matter, not as separate national issues handled by separate national counsel.

The EU dimension also affects leniency strategy. A leniency application made to the BCA does not automatically confer protection before the Commission or other national authorities. Businesses considering a leniency application in Belgium must evaluate whether parallel applications are required in other jurisdictions where the conduct had effects. The timing of applications across jurisdictions is a matter requiring careful coordination.

The Belgian nexus is relevant for Portuguese businesses expanding into Belgium or acquiring Belgian assets. Belgian and Portuguese competition legislation both derive from the EU competition law acquis, but procedural features differ. A Portuguese group entering Belgium through acquisition should expect a more formal investigative culture at the BCA, greater procedural formality in merger review, and a well-developed follow-on damages litigation environment. The substantive standards are broadly familiar; the procedural demands are not.

Our competition law practice in Portugal provides the corresponding analysis for businesses operating on the Iberian side of the same cross-border structure.

From a strategic standpoint, businesses with Belgian operations should conduct a competition compliance audit before any significant transaction, before entering a trade association, and before implementing any pricing or distribution policy that touches Belgian counterparties. Reactive compliance – triggered by a dawn raid or a complaint – costs multiples of what proactive compliance costs. The deterrent effect of Belgian competition enforcement is real: fines for sustained cartel conduct represent meaningful sums even for large groups, and the reputational cost of a public infringement decision is difficult to recover from.

For businesses managing Belgian and EU competition exposure in parallel, a coordinated strategy covering both the BCA and Commission dimensions – alongside civil litigation risk – is the most effective approach. To discuss how Belgian competition rules apply to your specific situation, contact us at info@ferrazwhitmore.com.

Self-assessment checklist for businesses operating in Belgium

Belgian competition law applies broadly. The following conditions indicate when a formal competition review is needed before proceeding.

Merger notification applies if:

• Both parties generate turnover in Belgium above the thresholds set in Belgian competition legislation, regardless of whether EU merger regulation thresholds are met
• The transaction involves a change of control over a Belgian-based undertaking or its assets
• The parties have horizontal overlaps in Belgian product or service markets

Cartel and agreement risk exists if:

• The business exchanges pricing, capacity, or customer information with Belgian competitors, directly or through associations
• Distribution agreements with Belgian counterparties contain resale price maintenance provisions or territorial restrictions
• Coordinated commercial behaviour with Belgian market participants can be inferred from pricing patterns or market outcomes

Dominance review is warranted if:

• The business holds a significant market share in any Belgian product or geographic market
• Commercial practices include rebate schemes, exclusivity, or refusal to supply to Belgian counterparties
• The business controls an infrastructure, platform, or technology that competing Belgian operators depend on

Before any BCA investigation or notification, verify:

• Dawn raid protocols are in place and staff have received recent, Belgium-specific training
• Legal privilege has been properly documented for correspondence with Belgian counsel
• A leniency evaluation has been completed if any past conduct may attract scrutiny
• The civil litigation exposure from any potential infringement has been assessed alongside administrative risk

For detailed guidance on Belgian company formation and related regulatory requirements, our guide to company formation in Belgium provides a structured entry-point for businesses establishing a Belgian presence.

Frequently asked questions

How long does a Belgian merger review typically take, and can a transaction close during the review period?

Phase I review takes up to 40 working days from the date the notification is declared complete. During this period, a standstill obligation applies: the transaction cannot be implemented. Closing before clearance constitutes gun-jumping and is itself an infringement, regardless of whether the underlying merger is ultimately approved. Where the BCA requires additional information, the clock may pause, extending the Phase I timeline. Transactions with no significant competition concerns are typically cleared within Phase I.

Does a leniency application in Belgium also protect the business before the European Commission?

No. A leniency application to the Belgian Competition Authority provides protection only in Belgian proceedings. It does not automatically extend to Commission proceedings or to proceedings before other national competition authorities. Businesses with multi-jurisdictional cartel exposure must evaluate and, where appropriate, file parallel leniency applications in each relevant jurisdiction. Coordinating the timing and content of those applications requires careful management, as inconsistencies between submissions can undermine the leniency position across jurisdictions.

Our company is not dominant in global terms. Can we still face abuse of dominance proceedings in Belgium?

Yes. Dominance under Belgian and EU competition legislation is assessed by reference to the relevant product and geographic market, which may be much narrower than a global or even European market. A business with a modest global position may hold a dominant position in a specific Belgian product segment, regional infrastructure market, or specialised service category. Practitioners in Belgium note that the BCA has become more active in sector-specific dominance cases, particularly in digital services and regulated industries. A market share analysis at the Belgian level is the starting point for any reliable assessment.

About Ferraz & Whitmore

Ferraz & Whitmore is an international law firm based in Lisbon, advising business clients across 46 jurisdictions. Our competition law practice supports international groups managing merger notification, cartel defence, dominance investigations, and follow-on civil exposure across European markets, including Belgium. The firm combines Portuguese civil law expertise with English common law tradition, giving clients a dual-perspective approach that is particularly valuable in cross-border competition matters involving both Belgian and EU dimensions. Our attorneys have advised on competition matters before national competition authorities and the European Commission, across both civil law and common law systems. The firm is a member of leading international legal associations with active participation in cross-border competition practice groups. As a law firm in Belgium and across the EU, Ferraz & Whitmore works with international entrepreneurs, institutional investors, and in-house legal teams who need results-oriented counsel. To discuss your competition law situation in Belgium, 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.