To apply for Spanish citizenship by descent in 2026, you register or file at the Spanish consulate that covers where you live, using one of two routes in the Civil Code: citizenship by origin if a parent held Spanish nationality when you were born, or citizenship by option in a few narrower situations involving guardianship, late-established parentage, or adoption. The Democratic Memory Law route that covered grandchildren of exiles closed to new applications on October 22, 2025, and no further extension was granted. What follows walks through which route fits your situation, the documents Spanish authorities require, and how the filing works from appointment to oath.
Figure Out Which Route You Qualify For
The route depends on how the Spanish blood reaches you.
If one or both of your parents held Spanish nationality at the time of your birth, you are already a Spanish citizen by origin under Article 17 of the Civil Code, wherever you were born. You are not applying for citizenship in the ordinary sense; you are registering nationality you have held since birth. Your parents should have registered your birth at a Spanish consulate or the Civil Registry, and if they didn’t, you can do it yourself.
There is one catch that trips up people born abroad: if you were born abroad and your Spanish parent was also born abroad, you generally need to register before turning 21, or the direct-origin route may close and you’ll need a different path.
Citizenship by origin is the strongest form of Spanish nationality. It cannot be revoked the way nationality acquired through residence or marriage can, and it carries no language or civics test.
If your Spanish connection runs through a grandparent, or your situation falls outside the direct parent-child line, citizenship by origin isn’t yours to claim. What may be available is the right of option under Article 20 of the Civil Code, which covers three specific situations:
- Minors or dependent persons under the guardianship of a Spanish citizen.
- People whose Spanish parentage is established by a court after they turn 18. You have two years from that determination to opt.
- People adopted by a Spanish citizen after turning 18. You have two years from the adoption.
The option pathway requires an affirmative application within the time window. There is no automatic status to fall back on.
What the Democratic Memory Law No Longer Covers
Law 20/2022, sometimes called the Grandchildren’s Law, opened a route for descendants of Spaniards exiled during the Civil War and Franco’s dictatorship, and for children of Spanish women who lost nationality by marrying a foreigner before the 1978 Constitution.1Ministry of Foreign Affairs, European Union and Cooperation. The Government Extends the Deadline for Spanish Nationality Applications Set Out in the Democratic Memory Law by One Year The initial two-year window was extended once, to October 22, 2025. It has now closed. If you did not file or reserve a consulate appointment before that date, this route is no longer available regardless of eligibility. Applications submitted in time are still being processed, and many remain in the backlog well into 2026.
Documents You Need to Gather
Whichever route applies, the paper trail has to prove three things: who you are, who your Spanish ancestor was, and the legal chain of descent between you. Start gathering early, because pulling documents from multiple jurisdictions takes longer than most people expect.
- Your valid passport or national ID.
- Your birth certificate, in full or long-form version, not an abstract.
- Your Spanish parent’s or grandparent’s birth certificate.
- Marriage certificates in the chain of descent, where they establish the link.
- Proof of your ancestor’s Spanish nationality: a Spanish passport, DNI, or consular registration certificate.
Apostille Every Foreign Document
Every foreign public document going to Spanish authorities must be apostilled or legalized. Because the United States and Spain are both parties to the Hague Convention, U.S. documents need an apostille rather than full diplomatic legalization.2U.S. Department of State. Spain Judicial Assistance Information You get an apostille from the secretary of state’s office in whichever U.S. state issued the document. Fees are modest, typically a few dollars to around $20 per document. Documents from countries outside the Hague Convention require full legalization through the issuing country’s foreign ministry and the Spanish consulate, which takes longer.
Use a Sworn Translator
Any document not originally in Spanish must be translated by a sworn translator (Traductor Jurado) officially authorized by Spain’s Ministry of Foreign Affairs. Regular certified translations won’t be accepted. Costs vary, but a full application package typically runs €500 to €800, or roughly $20 to $100 per page depending on translator and language pair. Book the translator early. Wait times can be long, particularly in cities with large applicant populations.
Where and How to File
If you live outside Spain, you file in person at the Spanish consulate whose jurisdiction covers your address. Each consulate has a defined territory, and you’ll usually need a driver’s license or state ID showing you live within it. If you live in Spain with legal residency, you file directly with the Central Civil Registry in Madrid.
Most consulates require an appointment, and nationality appointments are handled separately from passport or visa slots. Ask specifically for the nationality queue. Some consulates have backlogs stretching months, so start the appointment process before your paperwork is complete.
Bring every original document plus copies, all apostilles, and all sworn translations to your appointment. Consular staff will review the package for completeness and flag missing items on the spot. Registration of applications at Spanish consulates is free.3Ministry of Foreign Affairs, European Union and Cooperation. Registration of Applications and Briefs Your real costs sit in document procurement, apostilles, and translations.
Timelines, the Oath, and What Comes Next
Processing depends on the route. Clean citizenship-by-origin registrations can resolve in a few months. Anything involving older records or the Democratic Memory Law backlog routinely takes a year or more. Spanish authorities may write during that period asking for additional documents or clarification, so keep copies of everything and watch both email and postal mail.
Once your application is approved, you have 180 calendar days to complete the oath of allegiance to the Spanish Constitution and the King. Missing that window can void the approval entirely, so treat it as a hard cutoff. If you’re abroad, you take the oath at your consulate. The oath itself is brief and ceremonial.
After the oath, your citizenship is inscribed in the Spanish Civil Registry. With that registration complete, you can apply for a Spanish DNI and passport. The passport gives visa-free travel throughout the European Union and Schengen Area, and the right to live and work in any EU member state.4Punto de Acceso General. Acquiring Nationality – Residence – Citizens – Your Rights and Obligations in the EU
Dual Citizenship and the Renunciation Question
Spain’s general rule is that adults acquiring Spanish nationality by option, residence, or naturalization must formally renounce their previous nationality during the Spanish process. Nationals of Latin American countries, Andorra, the Philippines, Equatorial Guinea, and Portugal are exempt. U.S. citizens are not on that list, so if you’re going through the option pathway, you’ll be asked to make a formal declaration renouncing your U.S. citizenship in the Spanish proceeding.
In practice, the United States does not recognize that Spanish renunciation as legally effective. Under U.S. law, Americans can only lose citizenship through a specific voluntary act performed before a U.S. consular officer or by other narrowly defined means. A renunciation statement made inside a Spanish proceeding has no effect on U.S. citizenship.5U.S. Department of State. Dual Nationality Most Americans who acquire Spanish nationality end up holding both passports.
If you are claiming citizenship by origin because a parent was Spanish, the renunciation question generally doesn’t come up the same way. You are not acquiring a new nationality; you are registering one you have held since birth. Confirm with your consulate which process applies to you.
Keeping Your Spanish Citizenship After You Get It
Spanish law contains retention requirements that can catch people out years later, especially those living permanently abroad.
If you are a Spanish citizen living abroad and you voluntarily acquire a third country’s nationality, you lose your Spanish citizenship unless one of two things is true: the new nationality is from a country on Spain’s exempt list (the same Latin American countries, Andorra, the Philippines, Equatorial Guinea, and Portugal), or you formally declare your wish to retain Spanish nationality within three years of acquiring the foreign citizenship. For Americans who already held U.S. citizenship before becoming Spanish, this typically comes into play only if you later add a third nationality.
A separate rule applies to people born abroad to a Spanish parent who was also born abroad. You must affirmatively declare your wish to retain Spanish nationality within three years of reaching the age of majority or legal independence. Miss that window without making the declaration and you risk losing your nationality.
People who acquired Spanish nationality through residence or marriage face one more exposure: if you resume using the nationality you formally renounced during the Spanish process, and you do so for three consecutive years, your Spanish nationality can be revoked.