Nationality
attribution, acquisition and recovery in Portugal.

Legal framework

The Portuguese Nationality Act is Law no. 37/81, which has been amended several times — most recently by Organic Law no. 1/2026 of 18 May, as corrected by Declaration of Rectification no. 17/2026/1, which raised the naturalisation periods to seven or ten years depending on nationality, reinforced the material requirements — including for grandchildren of Portuguese citizens — and repealed the Sephardic route and the routes connected with the former Portuguese territories for new applications. Administrative procedures pending on 18 May 2026 remain subject to the previous wording. Two practical notes:

For naturalisation purposes, the legal residence period is generally calculated from the issue of the first residence permit, with periods of legal residence aggregated within the statutory time windows.

The Sephardic naturalisation route has been repealed for new applications. Legal support is limited to administrative procedures already pending on 18 May 2026.

The four main routes

Portuguese nationality is, in practice, organised around four routes with dedicated matter pages:

By descent — original attribution to children and grandchildren of Portuguese citizens born abroad. For children, it depends on the registration of the birth in the Portuguese civil registry or on a declaration of will. For grandchildren, the 2026 law introduced material requirements of their own — sufficient knowledge of Portuguese and of Portuguese culture, history and national symbols, as legally required, knowledge of fundamental rights and duties, a solemn declaration of adherence to the principles of the democratic rule of law, and the absence of the applicable criminal and security impediments. Great-grandchildren may access naturalisation with a waiver of the general residence period, subject to five years of legal residence in Portugal and the remaining applicable requirements. As a rule, descent is the most direct route where the records are consistent.

By legal residence — naturalisation by legal residence: seven years for nationals of Portuguese-speaking countries and the European Union and ten years for other nationals, under Organic Law no. 1/2026; administrative procedures pending on 18 May 2026 remain subject to the previous regime. It is the route applicable to those who arrive on the D7, D8, D2, Golden Visa, family reunification or other residence routes. The period is generally counted from the issue of the first residence permit, with periods of legal residence aggregated within the statutory time windows. It requires sufficient knowledge of the Portuguese language and of Portuguese culture, history and national symbols, demonstrated under the applicable legal and regulatory rules, means of subsistence, and the absence of a final conviction carrying an effective prison sentence of more than three years, together with the statutory catalogue of criminal and security impediments.

By marriage or de facto union — derivative acquisition based on a marriage or de facto union (*união de facto*) subsisting for more than three years with a Portuguese citizen. For marriages performed abroad, prior transcription in the Portuguese civil registry is, as a rule, a precondition. For a de facto union, the law requires a court decision of recognition with final effect. The Public Prosecutor may oppose the acquisition under the Nationality Act — the period for the opposition action is now two years.

Pending Sephardic applications — the naturalisation route for descendants of Portuguese Sephardic Jews was repealed by Organic Law no. 1/2026 of 18 May, as corrected by Declaration of Rectification no. 17/2026/1; new applications cannot be filed on this ground. Support is limited to administrative procedures already pending on 18 May 2026.

Former Portuguese territories — the specific routes connected with the former territories were closed to new applications by Organic Law no. 1/2026; historical, documentary and transitional questions remain relevant, and Portuguese records from Goa, Daman and Diu and Macau may support the general routes, notably descent. See also the 2026 nationality law — which regime applies to you and our Portuguese birth certificate search service. On representation, see working with a Portuguese citizenship lawyer.

Reacquisition is also available to those who lost Portuguese nationality — not yet a dedicated matter page, but handled along the same lines.

How to choose the appropriate route

The choice between routes is based on concrete criteria:

• Family line. Where there are Portuguese parents or grandparents, the descent route tends to be the most direct. For grandchildren, the material requirements introduced in 2026 — language, culture and the absence of impediments — are the sensitive point.
• Time already spent in Portugal in legal residence. Those approaching the legal period — seven or ten years, depending on nationality — may consider the legal-residence route; administrative procedures pending on 18 May 2026 remain subject to the previous regime. The period is generally counted from the issue of the first residence permit.
• Civil status and origin of the spouse or partner. Marriage or de facto union of more than three years with a Portuguese citizen is an autonomous route, with its own preconditions of transcription or judicial recognition.
• Geographic and family origin. The Sephardic route has been repealed for new applications; only administrative procedures already pending on 18 May 2026 continue. Matters connected with the former Portuguese territories are today relevant mainly as documentary questions supporting the general routes.
• Documentary availability. The route that looks "fastest" on paper may not be so on the ground if certificates, transcriptions or documents with unresolved inconsistencies are missing.
• Contentious risk. Some routes have higher exposure to opposition from the Public Prosecutor (marriage or de facto union) or, in pending Sephardic procedures, to the evaluation commission; others carry more documentary than contentious risk.

The initial consultation exists precisely to map these criteria in concrete terms and produce a written assessment of the recommended route — with the alternatives and their respective trade-offs.

Documents, records and cross-cutting risks

Several elements appear on almost every route:

• Apostille or consular legalisation of foreign documents, depending on the country of issue;
• Certified translation into Portuguese of documents not issued in Portuguese;
• Prior transcriptions in the Portuguese civil registry — frequently a practical condition of the application (foreign marriages, the Portuguese parent's birth, relevant deaths);
• Criminal records issued by the Portuguese services and by those of the country of birth, the country of nationality and the countries where the applicant has lived after the legally relevant age — the required recency of each certificate must be confirmed for the relevant procedure;
• Documentary inconsistencies — name spelling variants, date discrepancies, place designations — common and typically resolvable, but requiring technical handling;
• Colonial records issued before 1975 in territories under Portuguese administration — these follow specific rules of location and proof;
• Contentious risk — opposition from the Public Prosecutor (particularly on the marriage or de facto union route), passage through the evaluation commission in pending Sephardic procedures, prolonged inaction at the Central Registry Office.

Careful document preparation before filing reduces the risk of requests for corrections, delays and additional costs.

How we work this area

Every eligibility assessment begins with an initial 25-minute consultation. We map out the family line, dates of residence in Portugal, civil status, children, criminal records in the relevant jurisdictions and the documentation available. After the consultation, the client receives a written assessment identifying the route considered most appropriate, the documents to be gathered, an estimate based on the processing times then observed at the Central Registry Office and, where applicable, a fee proposal.

From that point we handle documentary preparation — apostilles, certified translations, certificates from the Jewish communities in pending Sephardic procedures, Portuguese and foreign criminal records — and the filing of the matter. We follow the file at the Central Registry Office through to registration — which now has constitutive effect — and the issue of the record entry, including the collection of biometric data where required. Portuguese nationality remains subject to the statutory ten-year consolidation period. Where there is opposition from the Public Prosecutor, we lodge the response. Where a file is refused or there is extended inaction, we lodge the appeal and, where required, bring proceedings before the administrative courts.

We are bound by the Statute of the Portuguese Bar Association (Law 145/2015) and by Law no. 6/2024 on legal advertising. We do not publish results-based metrics, we do not make comparisons with other firms, and we do not promise outcomes.

Responsible author

Jorge Ferraz. Admitted to the Portuguese Bar since 2002. Leads DefesaLegal.pt. University lecturer in Portugal. Practises Portuguese nationality law, with experience across the routes and in parallel filings.