Argentine nationality: routes, requirements and current legal criteria

Legal update on the competent authority

Decree 366/2025 amended Law 346, transferred to the National Directorate of Migration the power to decide naturalization applications, and created the legal framework for citizenship by investment. On 30 June 2026, the National Electoral Chamber declared the decree null, holding that the Executive had encroached on a matter linked to political rights and therefore barred from emergency decrees.

There is therefore a period of institutional transition that does not close the administrative route, but requires choosing, with judgment, the safest procedural path for each situation — and even preparing both in a coordinated way where the case justifies it.

Nationality as a human right

Nationality is the legal bond that integrates a person into the political community of a State. It affects identity, residence, the right to enter and remain in the country, personal documentation, international protection and the exercise of political rights.

Article 20 of the American Convention on Human Rights recognises three fundamental guarantees:

• everyone has the right to a nationality;
• statelessness must be prevented;
• no one may be arbitrarily deprived of their nationality or of the right to change it.

The regulation of nationality remains a State power, but can no longer be understood as fully discretionary. It must be exercised through objective, reasonable, non-discriminatory rules compatible with human-rights treaties.

Nationality and citizenship

In Argentine law, the words “nationality” and “citizenship” are often used as equivalents. Conceptually, however, they can be distinguished: nationality identifies the legal bond of belonging to the Argentine State, while citizenship, in the political sense, covers the possibility of taking part in electoral life and exercising political rights under the conditions set by the Constitution and the laws.

A minor can be Argentine even if they do not yet fully exercise electoral rights. Likewise, the temporary suspension of certain political rights does not necessarily entail loss of nationality.

Comparative table of the main routes

Route A · Nationality by birth and option

Argentine nationality by birth

As a general principle, everyone born within Argentine territory is a native Argentine, whatever their parents' nationality. This follows the ius soli principle. There are specific exceptions, such as certain children of foreign diplomatic representatives covered by international immunities. Native nationality has a constitutional basis and, under the prevailing doctrine and case law, cannot be lost by unilateral renunciation or by the voluntary acquisition of another nationality.

Argentine nationality by option

Option corresponds to persons born abroad who are children of an Argentine father or mother and fall within the applicable legal and registry regime. It is neither a naturalization nor a discretionary grant by the State: it is the exercise of a right derived from descent.

At present, the official RENAPER portal allows the procedure in Argentina for children born abroad of native or option Argentines. When the procedure is carried out directly at a consulate, the official information limits that consular route to the children of native Argentine citizens.

Who may exercise the option?

• children born abroad of a native Argentine father or mother;
• children of option Argentines, when the procedure is carried out in Argentina under RENAPER practice;
• minors or adults;
• persons who have never resided in Argentina.

There is no maximum age limit to exercise the right. If the applicant is a minor, the declaration is made through their parents or legal representatives.

Children of naturalized Argentines

Citizenship by option is not transmitted automatically to children born abroad of a person who acquired Argentine nationality by naturalization. In a 2022 ruling, the San Martín Federal Court rejected an application on behalf of an adolescent whose parents were naturalized Argentines: it held that Law 346 grants option to the children of native Argentines and that it was not appropriate to extend that regime judicially to a different situation. The precedent helps to anticipate whether an option route exists or whether a future naturalization must be assessed.

Usual documentation

• foreign birth certificate;
• apostille or consular legalization;
• sworn Spanish translation, where applicable;
• Argentine birth certificate of the parent;
• Argentine ID (DNI) of the father or mother;
• documentation of parental responsibility or representation;
• option form or record;
• additional documentation for differences in names or transliterations.

Certificates must be reviewed before apostille and translation. Spelling differences, the use of different surnames, or the transliteration of names from Chinese, Russian, Arabic or other languages may give rise to registry objections.

Route B · Naturalization by residence

Naturalization is the route for adult foreigners who have established residence in Argentina and express their will to join the national community in law. The traditional regime of the National Constitution and Law 346 contemplates:

• being of age;
• two years of continuous residence in Argentina;
• express declaration of the will to be Argentine;
• absence of legal impediments.

Following the National Electoral Chamber's ruling of 30 June 2026, the most recent judicial criterion reaffirms the jurisdiction of the federal courts. As that decision is appealed by the Government and not final, Migration's administrative platform remains published and operative: therefore, naturalization may today proceed via the administrative or the judicial route, as best suits each file.

Residence must be real and provable

The historic case law of the Supreme Court distinguished between migratory status — which regulates the entry and stay of foreigners — and the residence required to acquire citizenship — which relates to effective stay and ties in Argentina. Migratory categories are not, by themselves, decisive.

How is residence proven?

Relevant items may include: entry and exit records, DNI and migratory certificates, lease agreements, utility bills, tax registration, work or commercial activity, bank movements, corporate documentation, medical care, schooling, birth certificates of Argentine children, proof of address, administrative or judicial proceedings, and testimony supported by objective documentation. No single piece of evidence can replace the whole history: the file must allow a consistent reconstruction of when residence began and how it was maintained.

Is speaking Spanish mandatory?

Law 346 does not set knowledge of Spanish as a requirement for naturalization. In Liu, Cairong it was held that judges cannot add as an implicit requirement a condition the legislator expressly removed. A lack of Spanish may complicate a hearing and require an interpreter, but should not in itself become a standalone legal barrier.

Irregular entry and expulsion orders

An irregular migratory situation is not automatically equivalent to a lack of residence. However, an expulsion order, a re-entry ban or an unchallenged proceeding may produce relevant consequences. Before starting naturalization, Migration measures, expulsion orders, criminal records and pending court proceedings must be checked.

Route C · Argentine citizenship by investment

Decree 366/2025 introduced the possibility of applying for citizenship without a minimum residence period where the foreigner has made a relevant investment in Argentina. Decree 524/2025 then set out a procedure covering: filing before the Citizenship by Investment Programmes Agency, assessment of the investment's relevance, security and intelligence reports, and the final decision of the National Directorate of Migration.

The Government publicly announced that the programme would target projects above USD 500,000. However, the text of Decree 524/2025 does not fix that figure as a legal threshold: it delegates to the Ministry of Economy the determination of which investments are considered relevant. And the thirty days set in the decree correspond only to the decision stage after receipt of the Agency's report: they do not cover the investment assessment, the analysis of the source of funds or due diligence.

Criteria that may decide the outcome

1. Evidence matters as much as the right invoked

Two people with seemingly similar histories may receive different decisions because of documentation quality, date contradictions, migratory movements, undisclosed background or final administrative orders.

2. Migratory irregularity does not produce an automatic solution

The distinction between migratory residence and residence for naturalization is not a general amnesty and does not remove the consequences of a final expulsion.

3. A declaration of unconstitutionality does not by itself grant citizenship

When a court declares a rule invalid or reverses a rejection, it may order the file to continue or a new decision to be issued, but it does not automatically grant nationality.

4. Judges cannot extend a category without limit

Courts have noted that they cannot replace Congress or create a new category judicially — a criterion especially relevant in the case of children of naturalized Argentines.

5. Historical records may be incomplete

In old naturalizations, records may prove citizen status without preserving the ruling or the exact date of acquisition. Procedures exist to determine a presumed date where there is a legitimate interest and sufficient documentation — useful for successions, genealogy or citizenship procedures in other countries.

How we assess an application

• Identify the applicable route (native, option, naturalization, historical-naturalization reconstruction or possible investment).
• Prior documentary audit of certificates, passports, apostilles, translations, DNI and background.
• Reconstruct residence and ties through a verifiable timeline.
• Risk analysis: expulsion orders, background, inconsistencies and documentation used in prior procedures.
• Define jurisdiction and procedure according to the current state of the administrative-versus-judicial controversy.
• Filing, follow-up and advancement of the file, with any appropriate remedies.
• Process the DNI and passport before RENAPER once nationality is recognised.

Frequently asked questions on Argentine nationality

The right route depends on each personal history

Argentine nationality may derive from a birth certificate, from descent, from effective residence or, eventually, from a relevant investment. But the existence of a legal route does not replace the need to prepare the case properly. Before starting any procedure it is advisable to determine the applicable category, the competent authority, the provable residence period, the documents to apostille or translate, any migratory background or orders, the risks to resolve and the safest procedure to reach registration, the DNI and the Argentine passport.