🇧🇪 Belgium · Citizenship
Naturalization and citizenship-by-investment: residence years, language and civics tests, dual-citizenship rules, and multi-passport planning.
Belgian nationality for adults is mainly handled through declaration routes at the commune, with federal justice rules. Common five-year routes require legal residence plus language, social integration and economic-participation evidence; Belgium generally allows dual citizenship.
- FPS Justice lists declaration categories based on 5 years, 10 years or birth/residence facts.
- Language knowledge, social integration and economic participation are evidence-heavy and depend on the chosen route.
- Dual citizenship is generally allowed under Belgian law, but applicants should also check their other nationality law.
Official authorities
- FPS Justice — declaration of acquisition
Official adult Belgian-nationality declaration guide.
- FPS Justice — citizenship
Official nationality information hub.
Official-information aggregation, not legal advice. Always verify on the authority's own site.