NDA in Belgium: Template, Key Clauses and Local Law (2026)

The short answer A non-disclosure agreement (NDA) in Belgium is a contract in which one or both parties agree to keep shared information confidential and use it only for an agreed purpose. Belgium has no standalone NDA statute. It rests on freedom of contract under the new Civil Code, and it is reinforced by the trade-secret protection in the Code of Economic Law, which Belgium uses to implement the EU Trade Secrets Directive (2016/943). A well drafted NDA binds the other side contractually and, just as importantly, helps show the reasonable measures to keep information secret that the law requires before trade-secret protection applies. ## What law governs an NDA There are two layers. The contractual layer is the NDA itself, enforceable like any Civil Code contract, so breach can lead to damages or an agreed penalty before the commercial courts. The statutory layer is the trade-secret regime in the Code of Economic Law, which protects a trade secret independently of any contract. A trade secret must be secret, have commercial value because it is secret, and be subject to reasonable steps by the holder to keep it secret. That last element is why the NDA matters beyond its wording: it is evidence of reasonable measures. Remedies for trade-secret infringement include an injunction to stop the use or disclosure and a claim for damages. For employees, the Act of 3 July 1978 already imposes a duty not to disclose business or manufacturing secrets during and, to a degree, after employment, but broad post-employment restraints are limited by the rules on non-compete clauses. ## The clauses that matter most Definition of confidential information. Say what is covered. A common approach protects all non-public information disclosed for the purpose, marked or not, with clear examples. Avoid definitions that are either too narrow or impossibly broad. Purpose. State why the information is shared, for example to assess a possible deal or to run a project. Use beyond that purpose is a breach. Exclusions. Carve out information that is public, already known, independently developed, or lawfully obtained from a third party, and disclosures required by law or a court. Obligations. Keep the information secret, limit access to those who need it and are bound by equivalent duties, and use it only for the purpose. Term and survival. Set how long the duty lasts, and let confidentiality survive the end of the main relationship. Genuine trade secrets can be protected for as long as they stay secret. Return or destruction. On request or at the end, return or destroy the material and copies, with written confirmation. Remedies. Confirm the right to an injunction and damages, and consider an agreed penalty. Governing law and jurisdiction. For a Belgian deal, choose Belgian law and a Belgian court, and use the appropriate language. ## One-way or mutual Use a one-way NDA where only one side discloses, and a mutual NDA where both will share. Match the structure to the real flow of information so neither side is left unprotected. ## A simple template outline A sound Belgian NDA runs in this order: parties; recitals and purpose; definition of confidential information; obligations of the recipient; exclusions; permitted disclosures; term and survival; return or destruction; remedies, including injunction and any agreed penalty; no grant of rights beyond the purpose; and governing law and jurisdiction. ## Common mistakes and red flags The most common weakness is signing the NDA and taking no further steps, so the holder cannot show the reasonable measures the law expects, such as limiting access and marking sensitive material. A vague purpose clause is a second problem, because it lets almost any use be argued as permitted. Forgetting a survival clause is a third, so the duty lapses with the main contract. For employee NDAs, trying to restrain information indefinitely after the job can run into the limits on post-employment restraints. Keep the definition precise, the purpose tight and the survival explicit, and back the paper with real security habits. ## Where NDAs matter most, and the residuals trap In Belgium, as elsewhere, NDAs do the most work in two settings: corporate transactions and procurement. In a sale or investment, the parties exchange sensitive figures and plans long before any deal is certain, often through a data room, and the NDA both limits use to evaluating the transaction and restricts who inside each side may see the material. In procurement and supplier onboarding, an NDA protects specifications, pricing and roadmaps shared so a provider can scope its work. Tailoring the purpose clause to the actual setting, rather than reusing a generic one, is what makes the agreement bite. One clause to watch is the residual knowledge clause, which some recipients ask for. It typically says the recipient may freely use information retained in the unaided memory of its staff. For the disclosing party this can quietly swallow the protection it thought it had, because almost anything can be described as a memory. If you are disclosing, resist or tightly limit a residuals clause; if you are receiving, understand that a broad one shifts real risk onto the other side. Being deliberate about this single clause often matters more than the length of the rest of the NDA. This page is general information, not legal advice. Laws change and the right answer depends on your facts, so confirm the current position with a qualified lawyer in the relevant jurisdiction before you sign. ## Keeping confidentiality in one place Underneath the wording sits a practical problem. An NDA is only as strong as the records around it. Which version did each party sign, what was the purpose, when does the duty expire, and did the other side return or destroy the material. When signed PDFs and drafts live across inboxes and drives, those answers get hard to find, and the law here rewards the party that can show reasonable steps to keep information secret. Drafting the NDA, reviewing its scope and carve-outs, keeping versions straight and tracking its survival period are the same job, and it is easier when it lives in one workspace rather than across five disconnected tools. That single-workspace idea is what Adira is built around: draft, understand, edit, track and govern a contract in one place, tuned to how your company works. Adira is India-first today, with other jurisdictions on its roadmap, so for Belgian-specific confidentiality and trade-secret law you should still rely on local counsel and local templates. The point worth taking from this page is the direction: confidentiality you can rely on is confidentiality you can prove, from one place, with its dates in view.