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

3

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

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