Obtaining Spanish citizenship depends primarily on the legal basis of the application: the length of lawful residence, a family relationship with a Spanish citizen, ancestry or other circumstances provided for by the Civil Code. For most foreign nationals, citizenship by residence remains the main route. The standard qualifying period is 10 years, although for certain applicants it is reduced to five, two or one year. The qualifying period must consist of lawful, continuous residence immediately before the application is submitted.
Citizenship changes a person’s legal status far more fundamentally than permanent residency. Once the process has been completed, a citizen can obtain a Spanish passport and identity card, is no longer dependent on an immigration permit and acquires the rights associated with Spanish and European Union citizenship. However, a favourable decision from the Ministry of Justice does not complete the process: the applicant must fulfil the formalities required by law, including taking an oath or making a pledge of allegiance, and then register the acquisition of citizenship.
Dual citizenship in Spain requires particular attention. The rules depend on the applicant’s original citizenship and Spain’s international agreements. Spanish law exempts certain categories from the requirement to declare that they renounce their previous citizenship, while Spain and France have a separate agreement allowing it to be retained. In other cases, a declaration of renunciation before the Spanish authorities does not necessarily mean that the previous citizenship has actually been lost: that issue is governed by the law of the relevant country.
The sections below cover the rules in force in 2026. The years of residence and required exams are only part of the picture: the chosen legal basis, the accuracy of the documents, compliance with deadlines after approval and the consequences of acquiring a second citizenship also matter.
Four legal routes to citizenship and who they are for
The Spanish Civil Code provides several routes for acquiring citizenship. For a foreign national, the distinction between citizenship by residence, citizenship by option and citizenship granted by a special decision of the state is crucial. The law also separately regulates the consolidation of a status already being used when a person has, for a prolonged period and in good faith, considered themselves Spanish on the basis of an entry in the civil registry. These legal grounds should not be confused: the residence requirements, evidence and procedures differ.
Citizenship by residence is available to a person who has completed the period of lawful residence established by law and meets the other requirements. Citizenship by option is primarily linked to family circumstances and ancestry. Citizenship granted by a special decision is conferred by Royal Decree in exceptional circumstances and is discretionary, so it cannot be treated as a standard alternative to the residence-based procedure.
There is also a rarely used mechanism provided for in Article 18 of the Civil Code. Continuous possession and use of Spanish citizenship for ten years, in good faith and on the basis of a status registered with the civil registry authorities, may result in citizenship being consolidated even if the original basis is subsequently annulled. This provision is intended for specific cases and does not provide a route to obtaining a passport after ten years of residence without the corresponding citizenship status.
How long you need to live in the country
The general rule under Article 22 of the Civil Code sets a ten-year qualifying period. Five years is sufficient for recognised refugees. The period is reduced to two years for nationals by origin of Ibero-American countries, Andorra, the Philippines, Equatorial Guinea and Portugal, as well as for people of Sephardic origin.
In certain circumstances, one year of residence is sufficient. This rule applies to people born in the country; those who did not exercise their right to opt for citizenship within the applicable period; certain people who were under the legally recognised guardianship, care, protection or foster care of a Spanish citizen or institution; spouses of Spanish citizens; widows and widowers who meet the established conditions; and people born abroad who are descendants within the category specified by law.
Marriage to a Spanish citizen does not grant citizenship automatically. To qualify for the reduced period, the applicant must, at the time of applying, have been married for at least one year and must not be legally or de facto separated. A similar rule applies to a widow or widower: the law takes into account whether the couple were separated at the time of the Spanish spouse’s death.
In all these cases, the period of residence must be lawful, continuous and immediately precede the application. Time spent in Spain as a tourist or years of irregular residence do not become part of the qualifying period simply because the person has lived in the country for a long time. Longer trips abroad are less straightforward: the Civil Code does not establish a single number of days of absence after which continuity is automatically broken, so travel history should be assessed in light of the circumstances of each individual case.
The right to opt for citizenship through family ties to Spain
The right to opt applies, among other cases, to a person who is or has been subject to the parental authority of a Spanish citizen, as well as to someone whose father or mother was originally Spanish and was born in Spain. The second category is particularly significant: the Civil Code does not impose on it the general age limit that applies to certain other grounds for opting for citizenship.
A separate rule applies to adoption. A child under the age of 18 who is adopted by a Spanish citizen acquires Spanish citizenship by origin from the moment of adoption. An adult adoptee has the right to opt for it within two years of the adoption becoming legally effective. A two-year period also applies in certain situations where descent from a Spanish parent or birth in the country is established after the person has reached adulthood.
Spanish ancestry alone does not allow a person to choose whichever procedure is most convenient. It is necessary to establish which provision of the Civil Code applies to the particular family line, where and when the Spanish ancestor was born, which citizenship they held and whether a special temporary provision applied to the descendant. Particular care should be taken to distinguish the permanent right to opt for citizenship from the programme under the Democratic Memory Law, which has now ended.
The ‘Grandchildren Law’ is now closed to new applications
The Democratic Memory Law created a temporary right to opt for citizenship for several groups of descendants of Spanish citizens. In particular, the procedure covered children and grandchildren born outside Spain whose parents or grandparents were originally Spanish and had lost or renounced their citizenship as a result of exile for political, ideological or religious reasons, or because of persecution on the grounds of sexual orientation and identity. The provision also applied to certain other categories expressly listed in the law.
The application period ended on 22 October 2025. The extension provided for by law did not turn this temporary mechanism into an indefinite one, so in 2026 it is no longer possible to start a new application on this basis. A person who completed the registration procedure required by the relevant consulate before the deadline and received confirmation that the application had been made in time may continue the process later in accordance with the rules of their consular office.
The closure of this route did not repeal the standard provisions of the Civil Code for descendants of Spanish citizens. An individual applicant may still have the right to opt for citizenship or qualify for a reduced residence period, but the applicable legal basis must be determined separately. Simply stating ‘my grandfather or grandmother was Spanish’ is not enough to establish a right to a Spanish passport.
Citizenship exams: who needs the CCSE and DELE
For citizenship by residence, proof of integration is generally linked to two tests administered by the Cervantes Institute. The exam on Spain’s constitutional and sociocultural knowledge, officially known by the abbreviation CCSE, assesses knowledge of the country’s system of government, legislation, culture and society. The DELE language exam certifies Spanish proficiency at level A2 or above.
The exemptions from these tests differ. Minors and people within the category established by law whose legal capacity has been modified by a court are exempt from the exams. A separate exemption from the language test applies to nationals by origin of Spanish-speaking countries and territories. A previously obtained DELE diploma at the required or a higher level, or certain certificates issued by an official language school, may also provide evidence of the required level of Spanish.
Education certificates and the special exemption procedure
Spanish compulsory secondary education may provide grounds for exemption from the tests, but the original article described this mechanism too broadly as automatic. The position depends on the type of qualification and the applicable Ministry of Justice procedure. It is therefore advisable to check whether a Spanish qualification meets the current requirements for the individual case before registering for the exams.
For people who cannot read or write or who have learning difficulties, there is a procedure for requesting an exemption from the tests or adaptations to them. The Ministry of Justice makes the decision on the basis of the circumstances and documents submitted. This is not equivalent to a general rule allowing any applicant with a disability simply to skip both exams.
There is also a practical reason to clarify the testing requirements early in the preparation process. The CCSE exam is held according to the Cervantes Institute’s calendar, and its certificate has a limited period of validity. Establishing which tests are actually required at the outset can prevent unnecessary registration and avoid a missing result delaying an application that is otherwise ready to be submitted.
Documents: there is no universal application package
The documents required depend on the legal basis, the applicant’s age and individual circumstances. For an adult applying for citizenship by residence, the standard set of documents generally includes the application, birth certificate, a valid full passport from the country of origin, a criminal record certificate from the relevant country and proof of payment of the government fee. Foreign documents must meet the applicable legalisation or apostille and translation requirements.
The original list incorrectly gives the impression that every applicant must prove that they have sufficient financial resources. There is no such universal requirement in the general list of documents for acquiring citizenship by residence. The requirements for obtaining or renewing certain types of residence permits should not be confused with the separate citizenship procedure.
Additional documents depend on the particular ground for a reduced qualifying period. The spouse of a Spanish citizen will need documents proving the relevant family circumstances; a refugee must provide evidence of their status; and a person relying on a reduced residence period because of their ancestry must prove the relevant family relationship. It is therefore more reliable to build the application package around the specific provision of the law rather than a generic checklist found online.
Document validity and consistency
A foreign criminal record certificate must remain valid at the time of submission. If the certificate does not specify its own validity period, the Spanish rules governing citizenship by residence provide that it remains valid for six months from the date of issue. For other documents, the validity period established by the issuing authority and the requirements of international agreements must be taken into account.
Particular attention should be paid to the spelling of names and surnames, as well as the place and date of birth. Discrepancies between a passport, birth certificate and other documents may lead to a request for additional information or the need to correct records. In such a case, spending a few minutes checking the entire set before submission may prove more useful than having to correspond with the authorities afterwards.
Electronic applications are submitted through the official service of the Ministry of Justice. A draft application created there is stored for a limited period: if it is not signed and submitted within two months, the system will delete the unfinished application. It is therefore more convenient to open the electronic form once the main documents have been prepared rather than use it as a substitute for your own checklist of documents that still need to be obtained.
Processing time: the one-year legal limit does not guarantee a decision within a year
A maximum processing period of one year is established for citizenship by residence applications. The period starts when the application is received by the competent authority. If the applicant has not received an express decision within that period, negative administrative silence applies: the application is deemed to have been rejected for the purposes of a subsequent appeal. Citizenship itself is not acquired merely because the deadline has expired.
The legal significance of this rule becomes particularly important when processing is delayed. A presumed rejection allows the applicant to use the appeal procedures provided by law, including bringing the matter before the administrative courts. However, exceeding the one-year period does not require the person to begin court proceedings immediately: the application may continue to be processed even after administrative silence has taken effect.
The status of the case can be checked through the Ministry of Justice’s online services. The information shown in the system helps applicants track the progress of their application, but it does not replace formal notification of the decision. If the authorities request additional documents, the applicant must respond within the stated period and follow the requirements set out in the official notice.
After approval, a critical countdown begins
A favourable decision must still be followed through to registration. For citizenship by residence, the regulations establish a period of 180 days from the day following notification to the applicant or their representative. During this period, the steps required for the grant of citizenship to take legal effect must be completed.
For a person over the age of 14 who is capable of making the relevant declaration independently, the Civil Code requires an oath or promise of allegiance to the King and obedience to the Constitution and laws. Where required by law, the person must also declare that they renounce their previous citizenship. The acquisition process is completed by registration in the Spanish Civil Registry.
These steps should not be postponed until the end of the permitted period. Appointment arrangements depend on the applicant’s place of residence and the competent authority, so after receiving the decision, a sensible first step is to establish the available procedure for taking the oath and completing the registration. The details that will appear in the registry entry should also be checked carefully: correcting discrepancies after the process has been completed can be more difficult.
Dual citizenship: the Spanish declaration and the laws of the first country
Understanding dual citizenship in Spain requires distinguishing between two legal systems. As a general rule, Article 23 of the Civil Code requires an adult applicant acquiring citizenship by option, special grant or residence to declare that they renounce their previous citizenship. Nationals by origin of the countries listed in Article 24 and Sephardic people of Spanish origin are exempt from this requirement.
The exceptions include Ibero-American countries, Andorra, the Philippines, Equatorial Guinea and Portugal. France is covered by a separate bilateral agreement that entered into force in 2022: Spanish and French citizens may acquire the other country’s citizenship while retaining their previous one. As a result, in 2026 a commonly cited list limited solely to the categories in the Civil Code no longer provides the complete picture.
Nationals of other countries need to establish separately what consequences a declaration of renunciation has under the law of their country. A declaration made before the Spanish authorities and the actual loss of the first citizenship are not legally identical. One country may require a separate application to its competent authority, another may link loss of citizenship to the acquisition of a foreign citizenship, while a third may allow both citizenships to be retained.
This leads to a practical rule: before taking the oath, applicants should check the law of their first country if retaining its citizenship is important to them. Spanish law determines which steps a person must take before the Spanish authorities. The status of their previous citizenship is also governed by the law of the country that granted it.
What this means for Ukrainian citizens
This issue is particularly important for Ukrainian citizens. Ukraine is not among the countries whose nationals are exempt under Article 23 of the Spanish Civil Code from declaring that they renounce their previous citizenship. Consequently, when acquiring Spanish citizenship by residence, an adult Ukrainian applicant who is subject to this requirement must complete the Spanish procedure for declaring renunciation.
However, the consequences of such a declaration for Ukrainian citizenship cannot be determined solely under Spanish law. Spain does not make a decision on behalf of Ukraine to terminate Ukrainian citizenship. The Ukrainian legislation in force at the time of the procedure and the process it establishes for the termination of citizenship must be considered separately.
Given the possibility of changes to national legislation, relying on older articles about a ‘ban on dual citizenship’ or treating the Spanish declaration as automatic confirmation of the loss of a Ukrainian passport is risky. Before completing the procedure, applicants should check the current version of Ukrainian legislation and official guidance from the competent authorities. This is particularly important for people who continue to use documents from both countries or plan to live outside Spain for an extended period.
Loss of acquired citizenship: where the real risk arises
For Spanish citizens who acquired their citizenship other than by origin, Article 25 of the Civil Code establishes specific grounds for loss of citizenship. One of these arises when a person exclusively uses for three years the citizenship that they declared they were renouncing when acquiring Spanish citizenship. The law refers to exclusive use, so it would be incorrect to reduce this provision to a single occasion on which another passport is presented.
Another ground concerns voluntarily serving in the armed forces of a foreign state or holding political office there contrary to an express prohibition by the Spanish Government. Fraud during naturalisation is regulated separately. A final court judgment establishing falsehood, concealment or fraud in the acquisition of citizenship renders that acquisition invalid; the period for bringing the corresponding action is fifteen years.
A different regime applies to Spanish citizens by origin. An emancipated citizen who habitually lives abroad and voluntarily acquires another citizenship, or exclusively uses a foreign citizenship held before emancipation, may lose Spanish citizenship after three years. Loss can be prevented by declaring within the prescribed period an intention to retain Spanish citizenship. Acquiring the citizenship of an Ibero-American country, Andorra, the Philippines, Equatorial Guinea or Portugal does not in itself produce this consequence.
Recovering citizenship after its loss
Loss of status is not always permanent. Article 26 of the Civil Code allows Spanish citizenship to be recovered when the established conditions are met: lawful residence in Spain, a declaration of the intention to recover citizenship and registration of the recovery in the Civil Registry.
The residence requirement does not apply to emigrants and their children. In other circumstances, the Minister of Justice may waive it where exceptional reasons exist. Some people who lost their citizenship on the grounds set out in Article 25 must also obtain prior authorisation from the Government.
Recovery therefore cannot be treated as a single administrative procedure applicable to every former citizen. The basis on which citizenship was originally acquired and the reason for its loss must first be established, after which it can be determined whether the standard registration procedure is sufficient or additional authorisation is required.
A passport does not determine tax residency
Naturalisation does not in itself make a person a Spanish tax resident. These matters are governed by tax law rather than citizenship rules. One of the main criteria for an individual is spending more than 183 days in the country during a calendar year; the law also provides for other grounds, including having the main centre of economic activities or interests in Spain.
A foreign citizen can therefore become a Spanish tax resident long before obtaining a Spanish passport. The reverse situation is also possible: a Spanish citizen may live abroad and, provided the relevant conditions are met, not be considered a Spanish tax resident. When moving between countries, double taxation agreements may also be relevant.
Citizens of countries that tax their nationals regardless of where they live require a separate assessment of their obligations in both jurisdictions. This issue falls outside the naturalisation procedure: holding two passports, tax residency and the obligation to file tax returns are separate legal categories.
What can complicate an application or lead to refusal
Problems can arise long before the Ministry of Justice reaches a decision if the applicant has calculated the qualifying residence period incorrectly. A break in lawful status may call the required continuity of residence into question. Lengthy absences also need to be assessed, although Article 22 of the Civil Code contains no universal rule under which any trip of a particular duration automatically resets the entire qualifying period.
Documents create another group of risks. Errors in legalisation, the absence of a required translation, discrepancies in personal details or an unsuitable criminal record certificate may result in a request for additional documentation. A straightforward check before submission can help: every document should correspond to a specific requirement of the chosen legal basis and be in a form that the Spanish authority is entitled to accept.
A criminal record does not amount to an automatic lifelong bar to citizenship, but the requirement of good civic conduct has independent significance. In a complex case, the authorities assess circumstances that may affect their decision. Attempting to conceal material information creates a considerably more serious risk because the accuracy of the information provided remains relevant even after a favourable decision has been issued.
- Check the exact legal basis for acquiring citizenship and the required residence period before preparing the application package.
- Reconstruct your history of residence permits and travel outside the country during the qualifying period.
- Check the spelling of your name and surnames, as well as dates and place of birth, across all documents before legalisation and translation.
- Establish whether you need to take both exams or whether a statutory exemption applies.
- Check that foreign documents will still be valid on the date of submission.
- After submitting the application, monitor official notifications rather than relying solely on the informational status of the case.
- After a favourable decision, immediately arrange the steps that must be completed within the 180-day period.
Following this sequence does not guarantee that citizenship will be granted, as the authorities assess compliance with all legal requirements. It does, however, help distinguish document-related errors that can be corrected from circumstances that genuinely require legal analysis.
In complex cases, identifying the problem before applying matters most
Applying independently is entirely realistic for an applicant with a clear legal basis, a continuous residence history and consistent documentation. Professional assistance becomes particularly useful in cases involving lengthy absences, gaps in legal status, a criminal record, a previous refusal, disputed ancestry, discrepancies in civil registry records or prolonged processing followed by consideration of a court appeal.
Retaining previous citizenship requires particular care. Reading the Spanish rules alone is not enough: they must be considered alongside the law of the other country. For the Spanish side of the procedure, the official materials published by Spain’s Ministry of Justice provide a useful primary reference, while current legislation and its amended versions can be checked through Spain’s Official State Gazette.
Once your legal status has been established, the practical questions of moving and living in the country remain. On Flagma, you can look for housing, jobs, services and other listings related to settling in Spain, while keeping this search separate from the official citizenship procedure.