Registering your address in Belgium (commune registration & national number)
Registration at your local commune is the gateway to almost everything in Belgium — your residence card, national register number, banking, and healthcare. Here's how the process works and what to bring.
Why registration matters
Your commune registration produces a national register number (Rijksregisternummer / numéro de registre national) — the identifier used by banks, employers, health insurers, and tax authorities. Until you're registered, most administrative steps stall.
The residence check
After you declare your address, a neighbourhood police officer confirms you actually live there before you're entered in the population register. Make sure your name is on the mailbox and you're reachable at the address.
Step by step
- 1Book or visit your commune
Go to the commune (gemeente/commune) of your address; some require an appointment.
- 2Declare your address
Submit your arrival declaration with your passport, visa, and rental contract.
- 3Pass the residence check
Be available for the local officer's visit confirming you live at the address.
- 4Collect your card and number
Once confirmed, you're issued your residence card and national register number.
Documents you'll need
- Passport and visa/permitPlus EU registration certificate if applicable.
- Rental contract or proof of address
- Passport photosCommune-specified format.
- Birth certificateLegalised and translated where required.
- Marriage certificateIf registering family members.
Estimated costs
| Item | Low | Average | High |
|---|---|---|---|
| Residence card fee | €20 | €35 | €50 |
| Passport photos | €6 | €10 | €15 |
| Certified translations (per document) | €30 | €50 | €90 |
Estimates only — actual costs vary by city, provider, and personal circumstances.
Typical timelines
Official sources
Frequently asked questions
It identifies you to banks, employers, health insurers, and the tax office. You'll be asked for it constantly.
Some banks and fintechs allow it, but a local bank account is far easier once you have your national number.
This guide is informational and may change. It is not legal, tax, or immigration advice. Always confirm requirements with the official sources above or a licensed professional.