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.
Data protection authority:
Gegevensbeschermingsautoriteit
(GBA)
Requirements
3
country-specific rules
Guides
11
guides available
Specific requirements for 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.
Enforcement in 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.
Official resources
Guides for Belgium
GDPR Compliance Checklist for Belgian Businesses (2026)
35-point GDPR checklist for Belgian businesses. APD/GBA enforcement, Wet 30 juli 2018, KBO/BCE number, cookie consent rules, Brussels bilingual obligations.
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.
EAA for Belgian SMBs: Website Rules from June 2025
Practical EAA guide for Belgian SMBs under the Wet van 5 november 2023. Microenterprise exemption, KBO/BCE number, WCAG 2.1 AA explained.
AI-Built Website and GBA Complaint: Who Pays in Belgium?
Your builder used Cursor or Lovable. The cookie banner does not work. The GBA fines you, not OpenAI. What changes 9 December 2026.
AI-Generated Code and Open-Source Licences (Belgium)
Copilot or Cursor wrote GPL code into your site. The site owner distributes it, not the AI. What Doe v. GitHub decided and what you can do.
AI-Generated Images on Your Belgian Website (2026)
AI Act Article 50(4) takes effect 2 August 2026. The four risk layers for Belgian SMBs publishing AI images on their website, with the Getty ruling.
Product Liability Directive 2024/2853 in Belgium
Directive (EU) 2024/2853 makes software and AI 'products' for strict liability on 9 December 2026. What changes for your Belgian SMB.
The EU AI Act for Belgian Website Owners: 2 August 2026
Article 50 of the AI Act takes effect 2 August 2026. APD/GBA and BIPT supervise. What Belgian SMB sites really must label and what they need not.
Withdrawal Button for Belgian Webshops: 19 June 2026
From 19 June 2026 every EU webshop must show a withdrawal button. Belgium missed the deadline. WER Book VI, FOD Economie, practical checklist.
AI-Built Website Liability Under EU Law
Cursor, Lovable and ChatGPT helped build your site. The GDPR controller is still you. What the AI Act, EDPB and 9 Dec 2026 actually change.
AI-Generated Code and Open-Source Licences
Copilot or Cursor wrote GPL code into your site. The site operator distributes it, not the AI. What Doe v. GitHub decided and what you can actually do.
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