Dispute resolution and arbitration law firms in Belgium

Cost breaks down into four items. The court registration fee, due to enter the case on the roll, which varies with the court and the value of the claim. The procedural indemnity, a statutory lump sum under the Judicial Code, scaled to the amount claimed and borne by the losing party: it covers only part of the winner's fees. Your own lawyer's fees, which are free and not tariffed. And ancillary costs: bailiff, court-appointed expert, translations. The expert appraisal is often the heaviest and most underestimated item, particularly in construction. Always ask for a written estimate of these four items before starting an action.

Timing depends above all on the court and the complexity. Summary proceedings run in weeks. Proceedings on the merits before the enterprise court run closer to one to two years at first instance, longer if a court expert is appointed, which frequently adds one to two years. Appeal roughly doubles the calendar. These orders of magnitude explain why significant commercial disputes often move towards arbitration.

Three main routes. Direct negotiation assisted by counsel, the cheapest, which often works where the parties share an interest in continuing the relationship. Mediation, where a neutral third party facilitates agreement without imposing it, and whose settlement can be given enforceable force by court approval. Arbitration, which produces a binding award, faster and confidential, but with a higher entry cost than litigation. The choice depends on the amount at stake, urgency, and whether you want to preserve the relationship.

Preparation starts with the arbitration clause itself: chosen institution, seat, number of arbitrators, language, governing law. It continues with the choice of arbitrator, a decision at least as important as the choice of counsel, and with assembling the evidence, bearing in mind that arbitral procedure generally gives more room to witnesses and experts than Belgian court procedure does. Budget for arbitration costs, arbitrators' fees and the institution's administrative fees, which the parties advance.

Only in part. The Belgian system provides a fixed procedural indemnity, set by Royal Decree in bands linked to the amount claimed, and borne by the losing party. That lump sum is generally lower than the fees actually incurred, particularly in complex cases. The judge can adjust it between a minimum and a maximum in limited circumstances. So budget for a residual cost of your own even on a complete win.

Disputes between undertakings fall in principle to the enterprise court. Territorial jurisdiction follows the Judicial Code, unless a valid jurisdiction clause applies. The language of proceedings is determined by the defendant's location or by the rules applicable to the district concerned, which has real practical consequences for choosing counsel. For cross-border disputes within the Union, the Brussels I bis Regulation prevails.

These disputes are technical before they are legal, and the court-appointed expert plays a decisive role. Look for a team used to steering an expert, drafting technical submissions and working with your own engineers. Ask how many court expert appraisals they have run in the sector over the last three years: a more reliable indicator than the size of the firm.

Technology litigation plays out on unusual ground: the subject matter is often intangible and judges have no daily experience of it. The typical files are a failed integration project, a service-level dispute, ownership of bespoke developments, and post-acquisition claims over undisclosed technical debt. The difficulty is evidential rather than legal: you have to establish what was promised, delivered and accepted from tickets, steering committee minutes and acceptance reports rarely written with that purpose in mind. Look for a team that has already run a court expert appraisal on an information system and knows how the original contract should have organised the evidence — which is also what will serve you on the next contract.

Legal 500, not us. The tiers shown on this page are the ones Legal 500 publishes for Belgium in Dispute resolution, reproduced as they stand, with no change to their order or composition. We have not run the practitioner and client interviews that would let us rank firms ourselves: rather than invent an in-house scale that would look like an assessment without being one, we cite the publication that did the work.

By us, on a single criterion: the number of Belgian practice areas in which Legal 500 lists the firm. That figure appears on every card and anyone can recount it. Legal 500 draws no distinction between firms in the same tier; we introduce this order to make the list readable, knowing what it is worth. It measures the breadth of a practice, not the quality of its work: within the same tier, a boutique and a full-service firm are treated as equals by the ranking, and it is the ranking that counts.

They are the two most widely used references on the Belgian market, and they have real value: their teams interview practitioners and clients, year after year, about concrete matters. Their limit lies in how they collect. Listing starts from a submission by the firm: a practice that does not file does not appear, which mechanically under-represents boutiques and firms that do no business development. A Tier 1 tells you a firm is recognised by its peers and clients across a whole area; it does not tell you it is the right one for your matter.

From the Legal 500 index for Belgium, worked through area by area for the 2026 edition: a firm appears here in Dispute resolution if it is ranked there, at its tier. The direct and accepted consequence: a firm absent from Legal 500 is absent from here, which says nothing about its quality. If you know one that belongs here, write to us. Neither Legal 500 nor Chambers is a partner of this site, and neither endorses its content.