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National Number (Numéro National) & Tax Registration
Belgium
Last verified: 2026-02-20
Fees, fines, and deadlines are approximate. Always verify with official sources.
Key Registrations & Procedures
National Number (Numéro National) & Tax Registration
Deadline: National Number is assigned automatically. Tax registration happens when you file your first return or start employment.
Processing Time: National Number: immediate upon registration. Tax Number: within 2 weeks of employer notification.
Fees: Free
Appointment: No appointment needed — assigned automatically.
Required Documents:
- Municipal registration confirmation
- Employment contract (if applicable)
- For self-employed: BCE/KBO business registration number
Where to Do It:
The National Number is assigned by the National Register during municipal registration. For tax matters, contact your local SPF Finances office or use MyMinfin (tax.be) online portal.
If You Don't Do It:
Without a National Number you effectively may not be able to work, access healthcare, or interact with government services in Belgium.
Regional Variations: Same process nationwide. Online services available in FR, NL, and DE.
Visit Official Website