Adoption by Portuguese national — mediante declaração (Art 5) [RESTRUCTURED W7]

Lei Orgânica 1/2026 fundamentally restructured the adoption route to Portuguese nationality. Under the prior regime (W2-W6), Art 5 conferred nationality automatically by operation of law on a person adopted by a Portuguese national — this was a Section II acquisition (ipso jure, no act of will required). LO 1/2026 moved Art 5 from Section II to Section I of the Act, converting acquisition into a voluntary act: the adopted person (or their legal representative if a minor) must file a declaração de vontade with the IRN/CRC to acquire nationality.

** FATAL (PT-VC-004):** Acquisition under Art 5 is NO LONGER AUTOMATIC. This is the single most important change to the adoption route in the Act's history. Legal commentator Macedo Vitorino described this as a "retrocesso na lei" (step backward in the law).

Since LO 1/2026 placed Art 5 in Section I (acquisition by will), the adopted person's nationality declaration is now subject to the oposição regime under Art 9. The Ministério Público may oppose the acquisition within two years of registration on the ground of absence of effective community links (Art 9 n.1 a), measured using the Art 6(1)(c)-(i) yardstick). TC Acórdão 1133/2025 struck the "ostensiva rejection" second part of Art 9 n.1 a); the effective-links ground in the first part survives.

The Art 9 n.2 safe-harbour (which bars opposition after 6 years of marriage/união or for common Portuguese-national children) does NOT apply to adoptions — it applies only to marriage and união de facto routes (Art 3 n.1 and n.3). Adopted persons are not covered by the marriage/union safe-harbour.

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1. Adoption by a Portuguese national. The applicant must have been adopted, under a completed and final adoption order, by a Portuguese citizen. This includes full adoptions under Portuguese civil law (Código Civil Arts 1973 et seq.) and adoptions legally recognised in Portugal pursuant to private international law. The adoptive parent must hold Portuguese nationality at the time of the declaration.

2. Finalisation of adoption after 2026-05-19 (for this W7 route). Adoptions finalised before 2026-05-19 fall under the prior automatic regime (W2-W6) by virtue of LO 1/2026 Art 7 transitional — those adopted persons acquired nationality automatically and need not file a declaration unless they wish to have it formally registered.

3. Declaração de vontade filed by adoptee (or legal representative if minor). Unlike the prior automatic mechanism, a positive act of will is now required.

4. No express statutory bar on age of adoptee. Art 5 does not confine the route to minor adoptees. Adult adoptions under Portuguese civil law are recognised. However, the MP oposição regime operates regardless of age.

5. MP oposição risk: Unlike PT-MAR-01 (marriage) or PT-MAR-02 (união), there is no safe-harbour based on duration or common children. Every Art 5 declaration is potentially subject to MP effective-links opposition for 2 years from registration.

6. Dual nationality: Not required to renounce prior nationality.

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1. Step 1 — Finalise adoption: Ensure the adoption order is final and recognised in Portugal. For foreign adoptions, recognition under Portuguese private international law may require additional steps.

2. Step 2 — File declaração de vontade at IRN/CRC: File at the Conservatória dos Registos Centrais or at a Portuguese consulate abroad. The adoptive parent files on behalf of a minor adoptee; an adult adoptee files in their own name. Key documents: final adoption order (certified), adoptive parent's Portuguese identity document, applicant's identity document.

3. Step 3 — IRN registration: The declaration is registered in the RNI. Effects run from the date of registration (Art 12 Lei 37/81).

4. Step 4 — MP opposition window (2 years from registration): The Ministério Público receives notification and has 2 years from registration to oppose under Art 9 n.1 a) (absence of effective community links). There is no safe-harbour for adoptions. The MP evaluates the adoptee's links to Portugal using the Art 6(1)(c)-(i) yardstick. Opposition may be contested before the administrative courts.

5. Appeals: Refused declarations or successful MP oppositions may be challenged before administrative courts. The STA is the appellate court for nationality matters.

Primary authorities: IRN / Conservatória dos Registos Centrais (CRC) · Ministério Público (opposition) · Administrative courts / STA (appeals)

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Historical context (W2-W6, automatic attribution): From Lei 37/81's founding text (1981) through the pre-LO 1/2026 redação (up to 2026-05-18), Art 5 was in Section II (acquisition by operation of law — aquisição por efeito da lei). A foreigner adopted by a Portuguese national automatically acquired Portuguese nationality upon the finalisation of the adoption. No declaration was required. This automatic mechanism is wholly superseded for adoptions from 2026-05-19 onward; adoptions finalised before 2026-05-19 retain their automatic attribution (LO 1/2026 Art 7 transitional).

Art 9 n.1 a) (reformed, LO 1/2026): The MP may oppose the Art 5 declaration on the ground of inexistência de laços de efetiva ligação à comunidade nacional. The yardstick for assessing effective links is Art 6(1)(c)-(i): language, culture/history/symbols, civics knowledge, solemn democratic declaration, absence of criminal bar (conviction to effective imprisonment exceeding 3 years for enumerated crimes — Declaração de Retificação 17/2026), absence of security threat, absence of UN/EU restrictive measures, subsistence capacity. These are evaluative benchmarks, not independent thresholds the applicant must meet separately.

No safe-harbour for adoptions: The Art 9 n.2 safe-harbour that protects spouses/partners in marriages/uniões exceeding 6 years or with common PT-national children does not extend to adopted persons. There is no age or duration threshold that removes adopted persons from the MP opposition risk automatically.

Art 10 n.1: MP must file any opposition within TWO YEARS of registration in the RNI. TC Acórdão 768/2024 (Proc., confirmed by Acórdão 522/2025, DR Série I n.º 140 of 23-07-2025) and Decisão Sumária 78/2025 establish that a Regulation cannot override Art 10 on this timing — the deadline runs from the relevant declaração de vontade, not from the RNP registration date.

TC Ac. 768/2024 / 522/2025 / DS 78/2025: Confirm that the Regulamento (DL 237-A/2006) cannot displace Lei 37/81 Art 10 on the MP opposition-action time-limit start. The post-LO 1/2026 Regulamento update (~16 Aug 2026) is similarly constrained — it cannot override Art 10 on opposition timing for the new adoption declaração. TC Acórdão 1133/2025 struck the "ostensiva rejection" second sub-part of Art 9 n.1 a); the first sub-part (effective community links) is operative.

Effects: Acquisition produces effects from the date of registration (Art 12 Lei 37/81). It is acquired (concessão) nationality — the adopted person's children born after the nationality acquisition can claim Art 1(1)(a) jus sanguinis, but the adopted person themselves is not Portuguese "originário" (no retroactive effect to birth).

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