Website Rules in Belgium
Belgian websites must display their ondernemingsnummer (enterprise number) and comply with GDPR as enforced by the GBA. Bilingual requirements add extra complexity.
Autorité de protection des données :
Gegevensbeschermingsautoriteit
(GBA)
Exigences
3
règles spécifiques au pays
Guides
4
guides disponibles
Exigences spécifiques pour Belgium
Ondernemingsnummer
Belgian businesses must display their ondernemingsnummer (enterprise number) on their website. Format: BE 0XXX.XXX.XXX.
GBA enforcement
The GBA (Gegevensbeschermingsautoriteit) enforces GDPR in Belgium. They have been active in cookie consent enforcement, including a landmark case against IAB Europe.
Bilingual requirements
Businesses in Brussels or serving both Dutch and French-speaking communities may need to provide information in both languages.
Application en Belgium
The Belgian GBA's 2022 ruling against IAB Europe — fining them €250,000 for the Transparency and Consent Framework — sent shockwaves through the entire EU ad-tech industry. The GBA has also fined a Belgian company €50,000 for sending marketing emails without valid consent, and regularly publishes enforcement decisions to increase awareness.
Ressources officielles
Guides pour Belgium
GDPR Compliance Checklist for Your Website (2026)
A practical GDPR checklist for small business websites. Check cookies, privacy policy, consent forms, and tracking scripts.
Cookie Banner Requirements 2026: What Actually Counts
Most cookie banners fail basic GDPR requirements. Here is what yours actually needs: reject buttons, no dark patterns, real consent.
Does the European Accessibility Act Apply to Your Business?
The EAA became enforceable in June 2025. Find out if it applies to your business, what it requires and what happens if you don't comply.
KVK Number on Your Website: Is It Required?
Dutch businesses must display their KVK number on their website. Here is where to put it and what else is required.
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