How Spanish citizenship by descent works
The eligibility rules for Spanish 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 jure sanguinis 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 spanish 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:
- spanish
Primary sources
- § Código Civil, Art. 17 — Spanish nationality by origin (child of a Spanish citizen)
- § Código Civil, Art. 24 — second-generation-born-abroad must declare retention (ages 18-21) or lose citizenship; chain-break must be recorded as citizenship_held.lost_at (see NEEDS-PRIMITIVE note)
A qualifying path — via the jure sanguinis route
Requirements
ALL of the following
the applicant has a qualifying adoption (was finalized). If this fact is absent, the rule treats it as not applying (rather than asking for more information).
- was finalized:
- true
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 spanish citizenship at the time of the adoption, and the adoption finalized before the applicant turned 18.
- required citizenship:
- spanish
- adoption before age:
- 18
Primary sources
- § Código Civil, Art. 19.1 — a foreign child under 18 adopted by a Spanish national acquires Spanish nationality BY ORIGIN from the adoption (full adoption / adopción plena only; the adopting parent need only be Spanish at the adoption)
A qualifying path — via the declaration route
Requirements
ALL of the following
the qualifying ancestor has a qualifying originally spanish and born in spain (confirmed).
- confirmed:
- true
the qualifying ancestor must have held spanish 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:
- spanish
Primary sources
- § Código Civil, Art. 20.1.b — option for nationality where a parent was ORIGINALLY Spanish (Spanish by origin, not by naturalization) and born in Spain (no age deadline)
A qualifying path — via the declaration route
Date keying
- In force from 2025-10-23 onward — keyed on the assessment date, not on anyone's birth.
Requirements
ALL of the following
the applicant must have documented spanish_civil_war_descendant heritage, backed by a formal attestation document (e.g. a community-committee certificate).
- heritage type:
- spanish_civil_war_descendant
- attestation required:
- yes
the applicant has a recorded ethnicity such that attestation = lmd_filed_before_2025-10-22. If this fact is absent, the rule treats it as not applying (rather than asking for more information).
- attestation:
- lmd_filed_before_2025-10-22
Primary sources
- § Ley 20/2022 de Memoria Democrática — Disposición adicional octava; the 22 Oct 2025 deadline was not extended, but applications lodged before it (with a CSV receipt) continue to be processed
A qualifying path — via the residency naturalization route
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 originally spanish (confirmed).
- confirmed:
- true
the applicant must have been physically present in spain for at least 1 years.
- country:
- spain
- years of presence required:
- 1
the applicant has a recorded language certificate such that certificate = dele_a2.
- certificate:
- dele_a2
the applicant has a recorded civics test such that test = ccse, confirmed = true.
- test:
- ccse
- confirmed:
- true
Primary sources
- § Código Civil, Art. 22.2.f — reduced 1-year residency for a person whose father, mother, grandfather, or grandmother was originally Spanish
- § Requires DELE A2 language certificate + CCSE civics test (Instituto Cervantes) — modeled as fact-kind gates
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 declaration route
Closed 2025-10-23
Date keying
- In force until 2025-10-23 (exclusive) — keyed on the assessment date, not on anyone's birth.
Requirements
the applicant must have documented spanish_civil_war_descendant heritage, backed by a formal attestation document (e.g. a community-committee certificate).
- heritage type:
- spanish_civil_war_descendant
- attestation required:
- yes
Primary sources
- § Ley 20/2022 de Memoria Democrática — Disposición adicional octava ('Ley de Nietos', Grandchildren Law); deadline 22 Oct 2025 (no extension; applications with a CSV continue processing)
See how these rules apply to your family
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