Belgium's linguistic complexity is famous, and it is not merely a cultural curiosity — it has direct practical consequences for expats. Your experience of Belgian bureaucracy depends significantly on where you live, because the administration operates in the language of its region: French in Wallonia and most of Brussels, Dutch in Flanders, and German in a small eastern strip.
This post covers registration at the commune (French) / gemeente (Dutch) — your first and most foundational administrative step. The vocabulary is presented in both languages, because Belgium genuinely requires both.
Note: Brussels is officially bilingual (French and Dutch), but in practice the majority of Brussels communes operate primarily in French.
The Registration Step
Inscription / Inschrijving — registration.
Commune / Gemeente — the local municipal authority where you register. Your commune is determined by your address.
Service Population / Dienst Bevolking — the population services department within the commune that handles registrations.
Registre des étrangers / Vreemdelingenregister — the foreigners' register. Where non-Belgian, non-EU residents are initially registered, pending a residence permit.
Registre des Belges de l'étranger / Register van Belgen in het buitenland — register of Belgians abroad. Not relevant for expats moving to Belgium, but encountered in context.
What You Need to Bring
Passeport / Paspoort — passport.
Preuve de domicile / Bewijs van woonst — proof of address: a rental contract (bail / huurcontract) or a letter from the person you're staying with.
Contrat de bail / Huurcontract — rental contract.
Photos d'identité / Identiteitsfoto's — identity photos (required for the residence card).
Formulaire de déclaration d'arrivée / Aankomstverklaring — declaration of arrival form, completed at the commune.
After submitting your registration, a garde civile or wijkagent — a local community police officer — will visit your address to verify that you actually live there. This step is unique to Belgium and surprises many newcomers. It is routine; answer the door and confirm your presence.
The Cards
Carte d'identité des étrangers (CEE) / Bewijs van inschrijving in het vreemdelingenregister — for EU/EEA nationals: proof of registration in the foreigners' register. Issued after your visit is verified.
Carte de séjour / Verblijfskaart — residence card issued to EU nationals once the registration process is complete.
Carte de séjour d'étranger (type A, B, C...) / Verblijfstitel — for non-EU nationals: the various categories of residence permit. The type determines duration and conditions:
- Type A — limited duration (up to one year)
- Type B — unlimited duration (permanent)
- Type C — long-term resident
- Type D — EU long-term resident
- Type E — EU/EEA citizen (registration certificate)
- Type F — family member of EU/EEA citizen
Renouvellement / Vernieuwing — renewal. Most temporary permits must be renewed; the timeline and requirements depend on the type.
Office des étrangers / Dienst Vreemdelingenzaken (DVZ) — the Belgian immigration office, which handles residence permits for non-EU nationals and certain decisions affecting EU nationals.
The Numéro de Registre National / Rijksregisternummer
Numéro de registre national / Rijksregisternummer — national register number. An eleven-digit personal identifier assigned to every person registered in Belgium. Encodes your birth date, gender, and a check digit. Used across all Belgian government services, healthcare, taxation, and banking. You will receive this number after your registration is processed.
Carte SIS / SIS-kaart — the old healthcare chip card. Replaced since 2014 by the standard carte d'identité for Belgian citizens and the carte de séjour for foreign residents. Still referenced in older documents.
eID — the Belgian electronic identity card. Contains your biometric data, a digital certificate, and your national register number. Used for online authentication with government services and increasingly accepted by banks and private organisations. EU citizens receive a card with limited electronic functions; Belgian citizens receive full eID.
Taxes and Obligations
Contributions / Bijdragen — contributions. Belgium's social security system requires contributions from residents; the Office National de Sécurité Sociale (ONSS) / Rijksdienst voor Sociale Zekerheid (RSZ) manages this.
Précompte professionnel / Bedrijfsvoorheffing — professional withholding tax, deducted from salaries at source. The Belgian equivalent of Germany's Lohnsteuer.
Déclaration fiscale / Belastingaangifte — annual tax return. Required from all Belgian residents.
SPF Finances / FOD Financiën — the Belgian federal public service for finance (tax authority).
A Note on Brussels
Brussels deserves a specific mention. Officially bilingual, its nineteen communes each have their own administration. The language of your commune's services can determine which forms you receive, which language official correspondence arrives in, and occasionally which staff member serves you. The French vocabulary in this article is most relevant in Brussels and Wallonia; the Dutch vocabulary in Flanders. In practice, most Brussels commune staff handle basic requests in English if necessary, though formal documents will always be in one or both official languages.
The administrative vocabulary of Belgium rewards learning both languages, at least at a basic level — even if your primary language of daily life is one or the other. A document that arrives in Dutch when you've been learning French, or vice versa, is much less alarming if you've built vocabulary in both directions.
Belgium's linguistic split affects everything from your commune registration to your mail. Vokabulo helps you build vocabulary in both French and Dutch — and over 100 other languages. Available on iPhone and iPad.
