Spanish Nationality by Option: Requirements and Deadlines (2026)

Last updated: 4 October 2026.

Spanish nationality by option is a route to citizenship for people who meet specific legal conditions. Eligibility often depends on a Spanish parent, parental authority, adoption or the legal determination of parentage.

The first step is identifying the applicable legal ground and its deadline. Your age, family history and the date when a parent became Spanish can make a significant difference.

This guide explains the ordinary Civil Code route, the documents commonly requested and the position of applications under the Democratic Memory Law in 2026.

What is Spanish nationality by option?

Nationality by option allows eligible foreign nationals to acquire Spanish citizenship through a formal declaration and registration procedure.

The main rules appear in Article 20 of the Spanish Civil Code, with related provisions in Articles 17 and 19.

The Ministry of Justice’s guidance on nationality by option explains the principal eligibility categories and who can make the declaration.

Who qualifies, and what are the deadlines?

For the Article 17.2 category, the underlying circumstances must support Spanish nationality under Article 17. This is not a general entitlement for everyone born in Spain.

The age-20 rule also has exceptions. For example, Article 20 provides an extension where the applicant was not emancipated at 18 under their personal law. Other provisions address support measures that prevented an earlier exercise of the right.

Check your exact deadline before waiting for certificates or an appointment.

Which situations require a different analysis?

Several family circumstances should be distinguished carefully:

• A Spanish parent at birth: you may already be Spanish by origin under Article 17. The relevant task may be registering and documenting that nationality.
• Adoption before age 18: Article 19 provides acquisition of Spanish nationality by origin from the adoption, rather than the adult adoption option procedure.
• Guardianship, foster care or birth in Spain: certain circumstances can support reduced residence periods under Article 22. They do not create a general right to nationality by option.
• A Spanish grandparent: ancestry alone does not establish the ordinary Article 20.1(b) entitlement, which concerns a father or mother who was Spanish by origin and born in Spain.

For example, a parent who became Spanish while their child was still under their parental authority may create an option entitlement for that child. The relevant dates and legal relationship must be established.

An adult whose mother was Spanish by origin and born in Spain may qualify under a different category, with no age limit.

How do minors make the declaration?

The applicant’s age affects participation in the procedure:

• Under 14: the legal representative makes the declaration.
• Aged 14 to 17, unless emancipated: the young person participates with assistance from their legal representative.
• Adults and emancipated applicants: they make the declaration personally.

Applicants with disabilities can exercise the right with the support and procedural adjustments they need.

For a minor, check which representatives must attend and what consent or supporting documents are required if a parent cannot appear. Custody orders, sole parental authority and disagreements between representatives require individual assessment.

Which documents should you prepare?

The exact checklist depends on the legal ground and the receiving office. Commonly requested documents include:

• The option application and birth-registration forms supplied by the Civil Registry or consulate.
• The applicant’s full birth certificate.
• A valid passport or identity document.
• The Spanish parent’s full Spanish birth certificate, including relevant nationality annotations.
• Evidence of the relationship, adoption or legal determination supporting the application.
• Identification and representation documents for a minor’s legal representatives.
• Proof of residence where needed to establish the appropriate office.

Where eligibility depends on a parent becoming Spanish while the applicant was a minor, documents must establish the relevant nationality and family timeline.

Foreign certificates may require an apostille or legalisation and an official translation. Exemptions and accepted languages can apply, so check the receiving office’s requirements.

Certificate freshness requirements also vary. Obtain the checklist before ordering replacement documents.

How does the application procedure work?

Step 1: Confirm the legal ground and deadline

Identify the precise Civil Code provision supporting your application.

Check birth dates, parental authority, the parent’s nationality history and any adoption or court decision. General statements about Spanish ancestry should be supported by the appropriate civil records.

Step 2: Contact the appropriate Civil Registry or consulate

If you live in Spain, start by contacting the Civil Registry serving your residence. If you live abroad, consult the Spanish consular Civil Registry for your area.

The office should confirm its role, the submission arrangements and the required forms. Some offices review documents before arranging the personal declaration.

You can locate the relevant office through the official Spanish embassy and consulate directory.

Step 3: Submit the documents and complete the declarations

Follow the office’s submission instructions and respond to requests for additional evidence.

Complete the personal declarations applicable to your age and circumstances. These can include the oath or pledge required by Article 23 and a declaration concerning your previous nationality.

An appointment request and the formal exercise of the option are distinct steps. Check what must be completed before your particular deadline.

Step 4: Complete registration and obtain your certificate

Acquisition must be recorded in the Spanish Civil Registry.

Follow the office’s instructions for obtaining the Spanish birth certificate documenting the acquisition. Once registration is complete, you can arrange the appropriate Spanish identity or passport procedures.

What is the position of the Democratic Memory Law in 2026?

The special application window under the Democratic Memory Law closed on 22 October 2025.

However, some applications can still progress after that date. The Instruction of 5 November 2024 allows later personal presentation where a qualifying consular appointment request was made within the legal period through the designated system and generated the required proof.

Keep the official receipt establishing timely submission and follow the consulate’s instructions. A generic email requesting information should not be assumed to meet those conditions.

The Instruction of 9 January 2026 also addresses which consular office receives these pending applications.

The closure of the extraordinary window does not remove the ordinary Civil Code option categories described above.

How much does the procedure cost, and how long does it take?

Spanish Civil Registry procedures are generally free, as explained in the Ministry of Justice’s Civil Registry information.

Separate expenses may arise for foreign certificates, apostilles, translations, professional assistance or subsequent passport applications.

Processing time depends on the office, document completeness and any additional checks. Keep submission receipts and case references, and monitor the contact details used for notifications.

Frequently asked questions

Can I apply if I am over 20?

Possibly. Article 20.1(b) has no age limit, while adult adoption and certain later legal determinations have their own two-year periods. Eligibility depends on the category and relevant dates.

Do I have to live in Spain?

The ordinary option route does not impose a general qualifying period of residence in Spain. Eligible applicants living abroad can use the appropriate consular procedure.

Can I keep my current nationality?

Article 23 requires a declaration of renunciation in applicable cases, with exceptions.

Check both the Spanish requirements and the law of your current nationality. The effect of acquiring Spanish citizenship on another nationality cannot be answered uniformly for every country.

Legal review: Francisco Javier Theuer Carmona, immigration lawyer and member of the Granada Bar Association (ICAGR 7984).

Last reviewed: 4 October 2026

Need help assessing your eligibility?

Nodisea can review your family records, identify the relevant nationality route and help prepare the documentation.

Our guide to choosing an immigration lawyer in Spain explains what to check when selecting professional assistance.

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