How Portuguese citizenship by descent works
The eligibility rules for Portuguese citizenship by descent, in plain English — who may qualify, what disqualifies, and the legal regimes over time, each cited to its primary statute.
Who may qualify
A qualifying path — via the consular route
Requirements
ALL of the following
Must NOT be true
the applicant's link to the qualifying ancestor is by adoption (rather than by birth).
- tie is adoptive:
- yes
the applicant must be the parent of the qualifying ancestor.
- relationship:
- parent
the qualifying ancestor must have held portuguese citizenship at the moment the applicant was born, passing it down the line by descent. Where the claim runs through more than one generation, a later loss of that citizenship is measured against the birth of that ancestor's own child on the line — the point at which it would have passed down — rather than against the applicant's birth.
- required citizenship:
- portuguese
Primary sources
- § Lei da Nacionalidade (Law 37/81 of October 3, 1981), Article 1(1)(b) — child of a Portuguese citizen, as amended by Law 43/2013
- § Lei Orgânica n.º 1/2026 (in force 19 May 2026) — parent (1G) path unchanged
A qualifying path — via the consular route
Requirements
ALL of the following
Must NOT be true
the applicant's link to the qualifying ancestor is by adoption (rather than by birth).
- tie is adoptive:
- yes
the applicant must be the grandparent of the qualifying ancestor.
- relationship:
- grandparent
the qualifying ancestor must have held portuguese citizenship at the moment the applicant was born, passing it down the line by descent. Where the claim runs through more than one generation, a later loss of that citizenship is measured against the birth of that ancestor's own child on the line — the point at which it would have passed down — rather than against the applicant's birth.
- required citizenship:
- portuguese
Must NOT be true
ANY of the following
the qualifying ancestor has a recorded citizenship held such that country = portuguese, mode = naturalization.
- country:
- portuguese
- mode:
- naturalization
the qualifying ancestor has a recorded citizenship held such that country = portuguese, mode = marriage.
- country:
- portuguese
- mode:
- marriage
the applicant has a recorded language certificate such that certificate = ciple_a2.
- certificate:
- ciple_a2
the applicant has a qualifying effective connection (confirmed).
- confirmed:
- true
Primary sources
- § Lei da Nacionalidade (Law 37/81 of October 3, 1981), Article 1(1)(d) — grandchild of a Portuguese citizen, as amended
- § Lei Orgânica n.º 1/2026 (in force 19 May 2026) — grandchild path retained; requires CIPLE A2 + effective connection (ligação efetiva)
- § Portaria 1403-A/2006 — implementing regulation for effective connection (ligação efetiva)
A qualifying path — via the consular route
Requirements
ALL of the following
the applicant has a recorded adoption such that was finalized = true, adoption date = {"on_or_after":"1981-10-08"}. If this fact is absent, the rule treats it as not applying (rather than asking for more information).
- was finalized:
- true
- adoption date:
- {"on_or_after":"1981-10-08"}
the applicant has a recorded adoption such that adoption type = full. If this fact is absent, the rule treats it as not applying (rather than asking for more information).
- adoption type:
- full
Citizenship must have passed to the applicant through a finalized adoption, with the adoptive parent holding portuguese citizenship at the time of the adoption, and the adoption finalized before the applicant turned 18.
- required citizenship:
- portuguese
- adoption before age:
- 18
the applicant has a qualifying effective connection (confirmed).
- confirmed:
- true
Primary sources
- § Lei da Nacionalidade (Law 37/81 of October 3, 1981), Article 5 — full adoption (adopção plena) by a Portuguese national before the adoptee turns 18 transmits Portuguese nationality; post-1981 cohort requires proven effective connection (ligação efetiva). Lei Orgânica 1/2026 made the mechanism a formal declaration.
A qualifying path — via the naturalization great grandchild route
Date keying
- In force from 2026-05-19 onward — keyed on the assessment date, not on anyone's birth.
Requirements
ALL of the following
the applicant must be the great grandparent of the qualifying ancestor.
- relationship:
- great_grandparent
the qualifying ancestor must have held portuguese citizenship at the moment the applicant was born, passing it down the line by descent. Where the claim runs through more than one generation, a later loss of that citizenship is measured against the birth of that ancestor's own child on the line — the point at which it would have passed down — rather than against the applicant's birth.
- required citizenship:
- portuguese
Must NOT be true
ANY of the following
the qualifying ancestor has a recorded citizenship held such that country = portuguese, mode = naturalization.
- country:
- portuguese
- mode:
- naturalization
the qualifying ancestor has a recorded citizenship held such that country = portuguese, mode = marriage.
- country:
- portuguese
- mode:
- marriage
the applicant must have been physically present in portugal for at least 5 years.
- country:
- portugal
- years of presence required:
- 5
Primary sources
- § Lei da Nacionalidade (Law 37/81), Art. 6(8) as republished in Lei Orgânica n.º 1/2026 (Diário da República, Série I, N.º 95, 18 May 2026, in force 19 May 2026) — naturalization path for 3rd-degree direct-line descendants (bisnetos) of original Portuguese nationals; requires 5 years legal residence in Portugal (waives the standard 7/10-year threshold of Art. 6(1)(b)) but all other Art. 6(1) naturalization requirements apply, including the language-and-culture competence test (Art. 6(1)(c))
- § NOTE: this is a NATURALIZATION path, not a jus-sanguinis attribution path. Art. 1(1)(d) of the republished Lei 37/81 caps the attribution chapter at the 2nd degree (grandchildren). Great-grandchildren receive no standalone descent/attribution route.
- § NEEDS-VERIFICATION (Regulamento): the specific CIPLE level required by Art. 6(1)(c) for Art. 6(8) applicants is set in Decreto-Lei n.º 237-A/2006 (Regulamento da Nacionalidade Portuguesa). Lei Orgânica 1/2026 Art. 4 mandates a Regulamento amendment within 90 days of publication (deadline ~16 August 2026). That amendment was NOT published as of 28 May 2026. Do NOT assume CIPLE B1 or any specific level until the amended Regulamento is published.
Cases that need individual review
Needs individual review
Requirements
ALL of the following
ANY of the following
the applicant must be the parent of the qualifying ancestor.
- relationship:
- parent
the applicant must be the grandparent of the qualifying ancestor.
- relationship:
- grandparent
the qualifying ancestor has a qualifying portuguese loss recorded (confirmed). If this fact is absent, the rule treats it as not applying (rather than asking for more information).
- confirmed:
- true
Primary sources
- § Lei da Nacionalidade (Lei 37/81), Art. 1(1)(d) — the grandparent must not have lost Portuguese nationality ('que não tenha perdido essa nacionalidade'); the condition attaches to the PERSON, and Reg. Art. 10.º-A(1) places it in the subject description rather than the applicant's cumulative requisites
- § Lei 37/81, Art. 8 — the only loss ground since the Act came into force (a positive declaration of not wishing to be Portuguese); Art. 40 repealed Lei 2098/1959
- § Lei 37/81, Arts. 30 and 31 — reacquisition after a pre-1981 loss, automatic where no definitive loss registration was entered and by declaration where one was, both with retroactive effect (Arts. 30(3), 31(3)). Art. 30 is the married-woman case; voluntary foreign naturalisation is Art. 31
- § Lei 37/81, Art. 22(1) — loss is proved by the civil register, hence the requirement for the grandparent's birth certificate in cópia integral (IRN Modelo 1D)
Historical regimes — no longer in force
These rules governed applications made before the dates shown. They are listed because they are often what people are looking for when researching an older claim — but none of them applies to an application made today.
A qualifying path that has closed — the sephardic route
Closed 2026-05-19
Date keying
- In force during the window 2024-04-01 up to (but not including) 2026-05-19 — keyed on the assessment date, not on anyone's birth.
Requirements
ALL of the following
the applicant must have documented sephardic heritage, backed by a formal attestation document (e.g. a community-committee certificate).
- heritage type:
- sephardic
- attestation required:
- yes
the applicant must have been physically present in portugal for at least 3 years.
- country:
- portugal
- years of presence required:
- 3
Primary sources
- § Organic Law 1/2024 (in force 1 April 2024) — Sephardic naturalization reform (3-year residence + ministerial committee)
- § Lei Orgânica n.º 1/2026 (in force 19 May 2026) — terminates the Sephardic naturalization track; pending applications filed ≤18 May 2026 protected by transitional Art. 7(2)
- § Law 37/81 art. 6(7) (as amended) — Sephardic naturalization framework
A qualifying path that has closed — the sephardic route
Closed 2024-04-01
Date keying
- In force until 2024-04-01 (exclusive) — keyed on the assessment date, not on anyone's birth.
Requirements
the applicant must have documented sephardic heritage, backed by a formal attestation document (e.g. a community-committee certificate).
- heritage type:
- sephardic
- attestation required:
- yes
Primary sources
- § Law 30-E/2015 (original Sephardic naturalization track)
- § Decreto-Lei 30-A/2015, Art. 24-A — implementing regulation (pre-Organic Law 1/2024 regime; requisitos: legal age + no serious criminal conviction + proof of Sephardic origin; NO residence period)
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