Yes, Argentina allows dual citizenship with the United States, and so does the U.S. You can hold both nationalities at once, keep both passports, and pass through both borders as a citizen. Argentina’s Nationality Law never asks foreign applicants to give up their original citizenship, and the U.S. Supreme Court has called dual nationality “a status long recognized in the law.”1Cornell Law Institute. Tomoya Kawakita v. United States There is one wrinkle worth knowing before you go any further: Argentine citizenship is effectively for life. Neither Law 346 nor the Constitution gives you a way to renounce it.2Constitute Project. Argentina 1853 (reinst. 1983, rev. 1994)
What Each Country’s Law Actually Says
Argentina’s Nationality Law (Ley de Ciudadanía No. 346) sets the requirements for naturalization but contains no requirement to renounce a prior nationality.3Argentina.gob.ar. Ley 346 – Ciudadanía It also contains no renunciation procedure at all. If you’re born Argentine or acquire the nationality through a parent, you stay Argentine regardless of what other citizenships you take on or what oaths you swear elsewhere.
The United States takes a more ambivalent position. It doesn’t promote dual nationality, but it doesn’t forbid it. The State Department’s Foreign Affairs Manual acknowledges that “a person may have and exercise rights of nationality in two countries and be subject to the responsibilities of both.”4U.S. Department of State Foreign Affairs Manual. 7 FAM 080 Dual Nationality The naturalization oath requires new U.S. citizens to “renounce and abjure absolutely and entirely all allegiance and fidelity to any foreign prince, potentate, state, or sovereignty,”5Office of the Law Revision Counsel. 8 U.S. Code 1448 – Oath of Renunciation and Allegiance but courts have not read that language as actually stripping foreign citizenship. Whether you lose your other nationality depends on what that other country’s law says. Argentina’s law says you don’t.
Naturalizing in Argentina as a US Citizen
You can become Argentine without giving up your U.S. passport. Law 346 sets the core threshold at age 18 and two years of continuous, legal residence in Argentina.3Argentina.gob.ar. Ley 346 – Ciudadanía Those two years must be on a valid temporary or permanent visa; tourist entries don’t count. The residence needs to be genuinely continuous, though there is some administrative flexibility in practice.
Beyond the residence requirement, you’ll need a criminal background check from Argentina’s National Recidivism Registry, an FBI fingerprint-based check (apostilled through the U.S. Department of State, since Argentina is a Hague Apostille Convention member), proof that you can support yourself financially, and current identity and residency documents. Anything not in Spanish typically needs a certified translation, and the FBI check usually has to have been issued within three to six months of submission.
Law 346 also allows an accelerated path for foreigners who make a qualifying investment in the country, without the two-year residence requirement.3Argentina.gob.ar. Ley 346 – Ciudadanía
Citizenship by Descent
Before starting a naturalization file, check whether you’re already Argentine. If one of your parents is a native-born Argentine citizen, you can register for nationality through any Argentine consulate, at any age.6Consulate General of Argentina in Miami. How to Obtain Argentine Citizenship by Descent This is registration, not naturalization: the citizenship is already yours by right of parentage. You avoid the two-year residence requirement entirely.
Adults need their own apostilled birth certificate (with a certified Spanish translation if required), a current ID, and the original birth certificate of the Argentine parent. Minors follow a similar process but need both parents present with identification. The detail that trips people up is name matching. If your Argentine parent’s name appears one way on their national ID and another way on your birth certificate — an abbreviated middle name, a dropped maiden name — the registration stalls until the discrepancy is fixed.6Consulate General of Argentina in Miami. How to Obtain Argentine Citizenship by Descent
Naturalizing in the US as an Argentine Citizen
Argentines can naturalize in the United States and keep their Argentine nationality. Because Argentine law provides no way to renounce it, the U.S. naturalization oath has no operative effect on your status back home.
The standard path requires five years as a lawful permanent resident. During those five years you must have been physically present in the U.S. for at least 30 months and maintained continuous residence, meaning you didn’t abandon your U.S. home even during travel. You must be at least 18 when you file, demonstrate good moral character, and pass a basic English test and a civics exam.7U.S. Citizenship and Immigration Services. I Am a Lawful Permanent Resident of 5 Years
If you’re married to a U.S. citizen, the timeline shortens to three years of continuous residence with at least 18 months of physical presence, and you must be living in marital union with your U.S. citizen spouse throughout.8U.S. Citizenship and Immigration Services. USCIS Policy Manual – Chapter 3 – Spouses of U.S. Citizens Residing in the United States Filing is on Form N-400 with a filing fee; USCIS updates its fee schedule periodically, most recently in March 2026, so check the current Form G-1055 before filing.9U.S. Citizenship and Immigration Services. G-1055, Fee Schedule
Taxes Are the Complicated Part
The most important practical consequence of holding both citizenships is tax. Both countries tax residents on worldwide income, and there is no bilateral tax treaty between them to coordinate the overlap.10Internal Revenue Service. United States Income Tax Treaties – A to Z Relief has to come from each country’s unilateral rules.
The U.S. taxes its citizens on worldwide income wherever they live. A U.S. citizen residing in Argentina still files a U.S. return every year. Two mechanisms limit double taxation. The foreign tax credit lets you offset U.S. tax by the income tax you paid to Argentina, claimed on Form 1116.11Internal Revenue Service. Foreign Tax Credit The foreign earned income exclusion lets qualifying taxpayers abroad exclude up to $132,900 in earned income for tax year 2026.12Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026 You can use either, but not both on the same income.
Argentina taxes residents on worldwide income and non-residents only on income earned inside Argentina. Foreign nationals become tax residents after 12 months of presence. Short trips abroad don’t interrupt the count, but a single absence longer than 90 consecutive days resets it. Once you’re a resident there and a citizen of the U.S., both countries claim your global income, and the foreign tax credit becomes essential.
Reporting Foreign Accounts
If you’re a U.S. citizen with financial accounts in Argentina, two separate reports can apply. If the combined value of your foreign accounts exceeds $10,000 at any point in the year, you file an FBAR (FinCEN Form 114) by April 15, with an automatic extension to October 15.13Internal Revenue Service. Report of Foreign Bank and Financial Accounts (FBAR) Separately, under FATCA, you may need to file Form 8938 with your tax return. Thresholds for filers in the U.S. start at $50,000 on the last day of the year or $75,000 at any point during it, doubled for joint filers; for U.S. citizens living abroad, thresholds rise to $200,000 on the last day of the year or $300,000 at any point for individual filers.14Internal Revenue Service. Do I Need to File Form 8938, Statement of Specified Foreign Financial Assets Coverage overlaps but the thresholds and filing channels differ, so you may owe both.
Which Passport at Which Border
Dual citizens need to keep both passports current and know which one to show where. U.S. law requires American citizens to use a U.S. passport when entering or leaving the United States.15eCFR. 22 CFR Part 53 – Passport Requirement and Exceptions Argentina has its own version: if an Argentine citizen enters on a foreign passport and stays longer than 180 consecutive days, they must exit on Argentine documentation. Shorter visits can end with the same foreign passport used on entry.16Consulate General in Atlanta. Frequently Asked Questions
The workable pattern is simple. Carry both. Show the U.S. passport at U.S. immigration and the Argentine passport at Argentine immigration. For a third country, use whichever one gives you better visa-free access.
Things That Sound Like Problems but Usually Aren’t
Military Service
Argentina abolished compulsory military service in 1994, and the Law on Voluntary Military Service (Law 24.429) took effect in January 1995. Service is voluntary. The law preserves a mechanism for reintroducing conscription with congressional approval if volunteers fall short, but that mechanism has never been used. The Constitution still contains older language about the duty to bear arms and a ten-year exemption for naturalized citizens,2Constitute Project. Argentina 1853 (reinst. 1983, rev. 1994) but with voluntary service in place for three decades that language has no current operational effect.
On the U.S. side, male dual citizens living in the United States register with the Selective Service System within 30 days of turning 18, on the same terms as any other male citizen or resident. Failing to register can affect federal financial aid, government employment, and eventually naturalization.
Consular Help Has Limits
When you’re inside Argentina, U.S. consular protection is constrained. Under a widely recognized principle of international law, the country where a dual national is physically present has the primary claim over that person. The State Department states plainly that consular officers may be unable to provide full assistance to dual nationals who run into legal trouble in their other country of citizenship.17U.S. Department of State. Dual Nationality The reverse applies inside the U.S. Consulates will try to help, but the host country is under no obligation to let them.
Security Clearances
Dual citizenship with Argentina does not automatically disqualify you from a U.S. federal security clearance. Under the current adjudicative guidelines (SEAD-4), reviewers look at conduct rather than applying blanket bars. Argentine citizenship held by birth, with no active exercise of foreign privileges, sits in the lowest-risk category and typically clears when documented. Complications appear when the dual citizenship becomes active — voting in Argentine elections, using an Argentine passport for travel, or receiving Argentine government benefits — each of which invites explanation and mitigation rather than automatic denial. Because Argentine citizenship can’t be renounced, adjudicators treat the citizenship itself as a fact, not a choice; what matters is whether behavior shows a foreign preference.