# Ordinary adult nationality declaration

The selected five-year residence route is a nationality declaration requiring language, social integration and economic participation, not discretionary parliamentary naturalisation.

Scope: Adult five-year declaration under Article 12bis(1)(2) of the Nationality Code; other declaration categories and exceptional naturalisation are distinguished, not merged into this route.

Jurisdiction: Belgium — federal nationality law, administered through the municipality of principal residence. Sources reviewed 2026-09-17; review due 2026-12-16.

General information, not legal advice or a finding of eligibility. Requirements depend on the route, applicant and filing date. Verify the official instructions before applying.

## Five years and qualifying status

An applicant must be at least 18 and have five years of principal residence in Belgium based on lawful stay. Unlimited residence or establishment permission is required at filing; the preceding period normally requires permission to stay for more than three months. Residence and lawful stay must be continuous. Temporary absences of at most six months do not interrupt the statutory period if their total is no more than one fifth of the required period.

Evidence: conditional. [Belgian Federal Public Service Justice: Declaration of acquisition](https://www.justice.belgium.be/en/themes_and_files/children_and_youth/citizenship/become_belgian/declaration_of_acquisition); [Belgian Federal Public Service Justice — Justel: Code de la nationalité belge — consolidated through 10 March 2026](https://www.ejustice.just.fgov.be/eli/loi/1984/06/28/1984900065/justel). Source location: Declaration of acquisition: general residence conditions and category 2; Nationality Code Articles 7bis(1)–(3) and 12bis(1)(2)(a)–(b).

## A2 national-language knowledge

Knowledge of one of the three national languages must meet CEFR A2 through accepted evidence. Proving social integration also proves language knowledge. A person certified by the competent Community authority as illiterate under the Code needs only A2 oral knowledge; this is a defined exception, not a general waiver.

Evidence: conditional. [Belgian Federal Public Service Justice — Justel: Code de la nationalité belge — consolidated through 10 March 2026](https://www.ejustice.just.fgov.be/eli/loi/1984/06/28/1984900065/justel); [Belgian Federal Public Service Justice: Déclaration de nationalité](https://www.justice.belgium.be/fr/themes_et_dossiers/personnes_et_familles/nationalite/devenir_belge/declaration_dacquisition/declaration_de_nationalite). Source location: Nationality Code Article 1(2)(5) and (10), including the 2024 amendment; declaration guidance, Remarque générale.

## Alternative social-integration evidence

Social integration can be shown by a qualifying upper-secondary-or-higher diploma or certificate; at least 400 hours of recognised vocational training; successful completion of the competent authority's integration or reception programme; or uninterrupted work throughout the preceding five years as an employee, appointed statutory civil servant or principally self-employed worker.

Evidence: conditional. [Belgian Federal Public Service Justice: Déclaration de nationalité](https://www.justice.belgium.be/fr/themes_et_dossiers/personnes_et_familles/nationalite/devenir_belge/declaration_dacquisition/declaration_de_nationalite). Source location: Qui peut faire une déclaration ?, category 2, social-integration alternatives.

## Separate economic-participation requirement

The ordinary route also requires at least 468 qualifying workdays in the preceding five years as an employee or statutory civil servant, or payment in Belgium of principally self-employed social contributions for at least six quarters in that period. The Code permits deduction of qualifying education or vocational-training duration completed within those five years from the required work duration; individual workday and training-credit calculations must be checked.

Evidence: conditional. [Belgian Federal Public Service Justice: Déclaration de nationalité](https://www.justice.belgium.be/fr/themes_et_dossiers/personnes_et_familles/nationalite/devenir_belge/declaration_dacquisition/declaration_de_nationalite); [Belgian Federal Public Service Justice — Justel: Code de la nationalité belge — consolidated through 10 March 2026](https://www.ejustice.just.fgov.be/eli/loi/1984/06/28/1984900065/justel). Source location: Declaration guidance, category 2, economic participation; Nationality Code Article 12bis(1)(2)(e) and its following education/training-credit paragraph.

## Belgium does not demand renunciation

Belgian authorities do not require an acquiring foreign national to renounce their existing nationality. Whether that nationality survives is governed by the other country's law; Belgium's allowance of multiple nationality does not guarantee retention elsewhere.

Evidence: conditional. [Belgian Federal Public Service Foreign Affairs — Embassy and Consulates in Canada: Plusieurs nationalités](https://canada.diplomatie.belgium.be/fr/services-consulaires/nationalite/plusieurs-nationalites). Source location: Plusieurs nationalités, paragraph beginning Si vous possédez une nationalité étrangère.

## Declaration is not exceptional naturalisation

A declaration is filed with the civil registrar of the applicant's principal-residence municipality and is subject to official examination. Separately, naturalisation is a favour granted by the Chamber of Representatives, generally requiring exceptional merits and an explanation of why declaration is virtually impossible; a separate recognised-stateless-person provision exists.

Evidence: conditional. [Belgian Federal Public Service Justice: Declaration of acquisition](https://www.justice.belgium.be/en/themes_and_files/children_and_youth/citizenship/become_belgian/declaration_of_acquisition); [Belgian Federal Public Service Justice: Naturalisation](https://www.justice.belgium.be/fr/themes_et_dossiers/personnes_et_familles/nationalite/devenir_belge/naturalisation). Source location: Declaration of acquisition, filing procedure; Naturalisation, conditions and Chambre des représentants decision.

## Scope and limitations

- Birth, Belgian-family, disability/pension and ten-year declaration categories have different conditions. This topic selects only the ordinary five-year social-and-economic-integration category.
- Residence-permit evidence, credited periods, language evidence, workday calculations and serious personal impediments require individual assessment. The residence threshold is not an approval or processing-time guarantee.
- No routeType is assigned because the schema has no declaration category; labelling this Belgian route naturalisation would conflate legally different procedures.

## Explore this passport

- [Passport rank and travel access](https://multipassrank.com/passport/belgium)
- [Tax residence & income](https://multipassrank.com/passport/belgium/taxes)
- [Country-profile JSON, including sources and scoped requirements](https://multipassrank.com/api/v1/country-profiles/BE)
- [Multiple-citizenship policy guide](https://multipassrank.com/dual-citizenship-countries)

[Canonical page](https://multipassrank.com/passport/belgium/citizenship)