May a shop ask for my BSN (Dutch citizen number)?
No. BSN use is legally restricted to government, healthcare, education, and tax purposes. A normal shop or webshop may NEVER ask for your BSN.
The BSN (Dutch Citizen Service Number) is a unique identifier under strict regulation. Dutch BSN Act (Wabb) Art. 10: only organisations specifically designated by law may use the BSN — government, municipality, Belastingdienst (tax), UWV (employment), SVB (social insurance), pension funds, hospitals, GPs, health insurers, schools, employers (only for payroll administration). Who may NOT ask? Webshops, hotels, gyms, volunteer organisations, dating apps, housing corporations (excluding specific situations), banks (only under Dutch AML for identification — and then via ID document, not separately noted), lotteries, insurers (excluding health insurance). Employers may only for payroll tax, not for other processes. What to do if they ask? (1) Refuse. (2) Ask for legal basis. (3) If they insist: AP complaint (fine up to €820,000 for BSN misuse). (4) Showing ID document? Cover the BSN with a sticker — photo + name + expiry date suffice for identification. Online sending of ID: AP and Dutch government recommend the KopieID app that auto-redacts BSN + photo. Fines 2023-2025: multiple AP fines for unlawful BSN use — e.g. gyms, hotels, online dating platforms. Our complete list of who may/may not.
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