Dual Citizenship: Benefits and Complications for American Expats

Introduction

A US citizen who also holds an Italian passport cannot simply flash the Italian one at JFK and skip the immigration line reserved for foreign visitors. Under 22 CFR 53.1, US law requires citizens — including dual nationals — to enter and depart the United States on a valid US passport, full stop. It's a small technical rule, but it captures the broader reality of dual citizenship: the benefits are real, but they come bundled with obligations most new dual nationals don't see coming until the first tax season or airport line makes it obvious.

Nobody knows exactly how many Americans hold a second passport, because the US doesn't require citizens to report a second nationality anywhere. What is tracked, and published every quarter in the Federal Register, is the number of Americans who go the other direction and give up US citizenship entirely — a figure that says a lot about how these tradeoffs actually play out for people living abroad long-term ([Federal Register](https://www.federalregister.gov/documents/2025/07/23/2025-13831/quarterly-publication-of-individuals-who-have-chosen-to-expatriate)).

This article walks through what dual citizenship legally means for US citizens, where it helps, where it creates friction with US tax and travel rules, and what to check before acquiring — or giving up — a second nationality.

What Dual Citizenship Actually Means Under US Law

The State Department's position is narrower than most people assume: the US government does not require a citizen to choose between US citizenship and a foreign one, and US law does not prevent citizens from acquiring a second nationality. A dual national is simply someone who is a national of two countries at the same time and is, in the State Department's words, expected to obey the laws of both ([Bureau of Consular Affairs, Dual Nationality](https://travel.state.gov/content/travel/en/legal/travel-legal-considerations/Relinquishing-US-Nationality/Dual-Nationality.html)).

There are three common paths to holding dual citizenship as an American:

1. **Birth in the US to a foreign national parent** — the child is a US citizen by birthright (14th Amendment) and may simultaneously acquire the parent's nationality, depending on that country's laws.
2. **Birth abroad to one or two US citizen parents** — governed by Immigration and Nationality Act sections 301 and 309, which set residency and physical-presence requirements the citizen parent must meet before the birth.
3. **Naturalizing in a second country as an adult** — the Oath of Allegiance taken during US naturalization does not, by itself, strip a US-born citizen of citizenship elsewhere, and acquiring a foreign citizenship as an adult does not automatically forfeit US citizenship either, per State Department guidance.

One consular detail matters more than people expect: when a dual national is inside the country of their other nationality, the US government's ability to provide consular protection is limited. A US-Iranian dual national arrested in Iran, for example, may find that Iran treats them exclusively as an Iranian citizen and denies the US embassy access — a pattern the State Department has flagged repeatedly for dual nationals traveling to their other country of citizenship.

The Benefits: Why Expats Pursue a Second Passport

For Americans already living abroad, a second passport typically solves problems that a US passport alone can't:

• **Visa-free residency and work rights.** An American who qualifies for Italian, Irish, German, or Polish citizenship by descent gains the automatic right to live and work anywhere in the EU's 27 member states — no employer sponsorship, no visa renewals, no five-year wait for permanent residency.
• **Property and business ownership.** Countries like Mexico and Vietnam restrict foreign ownership of land near coastlines or borders; a local second citizenship removes that restriction entirely.
• **Travel document flexibility.** A second passport from a country with strong visa-free access can eliminate visa costs and processing time on trips a US passport alone would require paperwork for.
• **Lower education costs.** EU citizenship typically qualifies a student for in-state or EU-resident tuition rates — a fraction of the international-student rate charged to US passport holders at the same university.
• **Inheritance and estate simplicity.** Local citizenship can simplify probate and property transfer under a country's civil code, particularly in EU states where non-citizen inheritance rules are more restrictive.

The Tax Complication Washington Won't Let You Escape

The biggest misconception about dual citizenship is that it changes your US tax obligations. It doesn't. The United States is one of only two countries in the world (Eritrea is the other) that taxes based on citizenship rather than residency, so acquiring a second passport changes nothing about the IRS's claim on worldwide income.

Two reporting regimes apply regardless of where a dual citizen lives:

• **FBAR (FinCEN Form 114):** Required if the combined balance of all foreign financial accounts exceeds $10,000 at any point during the year. It's filed with FinCEN, not the IRS, and the deadline is April 15 with an automatic extension to October 15. Non-willful violations carry penalties up to $10,000 per violation; willful violations can reach $100,000 or 50% of the account balance, whichever is greater.
• **FATCA (Form 8938):** A separate filing with the IRS itself, triggered at higher thresholds for those living abroad — $200,000/$300,000 (year-end/any-time) for single filers, $400,000/$600,000 for married couples filing jointly, per IRS guidance ([IRS, Comparison of Form 8938 and FBAR Requirements](https://www.irs.gov/businesses/comparison-of-form-8938-and-fbar-requirements)).

The two filings are not redundant — a dual citizen with $150,000 in a single foreign account can trigger FBAR without coming close to the FATCA threshold, and both forms ask for overlapping but not identical information.

FATCA also has a side effect many dual citizens run into before they ever think about their own tax return: it requires foreign financial institutions to report US-citizen-held accounts to the IRS or face a 30% withholding penalty on their US-source income. Faced with that compliance burden, a number of banks in Europe and Asia simply decline to open accounts for US citizens at all — a practical friction point that predates any tax bill actually coming due.

The Passport Rule Every Dual National Forgets

Back to the JFK example: 22 CFR 53.1 makes it unlawful for a US citizen — dual national or not — to enter or depart the United States without presenting a valid US passport, and the limited exceptions in 22 CFR 53.2 don't cover ordinary dual nationals. Practically, this means:

• A US-French dual citizen flying into Paris uses their French passport for EU/EEA immigration lines, then must have a valid US passport ready when flying back into the US.
• Letting a US passport lapse while living abroad on a foreign passport doesn't just create an inconvenience — it puts a dual national in technical violation of federal law the next time they cross a US border.
• Complying with a second country's own exit/entry passport rules for its own nationals does not endanger US citizenship; the State Department is explicit that using the foreign passport for that country's own border control is expected, not a problem.

Countries That Don't Recognize Your Second Citizenship

Dual citizenship is a US-friendly policy, but it isn't a universal one. Roughly 30 countries either bar dual nationality outright or make it conditional:

• **China** does not recognize dual nationality; a Chinese citizen who naturalizes as a US citizen automatically loses Chinese citizenship under Chinese law, regardless of US policy.
• **India** does not permit dual citizenship at all; its Overseas Citizen of India (OCI) card grants long-term visa-free entry and most economic rights but explicitly is not citizenship.
• **Japan** requires citizens who hold a second nationality to elect one by age 22, though enforcement is inconsistent because Japan has no routine mechanism to detect or revoke dual status.
• **Singapore, Saudi Arabia, the UAE, Kuwait, Bahrain, Qatar, Oman, and Kazakhstan** all restrict or prohibit dual nationality for their own citizens, sometimes with automatic loss of citizenship on foreign naturalization.

The practical risk for an American pursuing a second citizenship is assuming reciprocity: acquiring an ancestry-based EU citizenship is generally uncomplicated, but naturalizing in a country that doesn't recognize dual nationality can mean unknowingly triggering the loss of that same new citizenship, or running afoul of local law by holding both.

Citizenship-by-Descent Windows Close Faster Than Expected

Ancestry-based citizenship — a common route for American expats targeting the EU — isn't static. Italy's Law 74/2025 (the "Tajani Decree"), in force since March 28, 2025, cut off the jure sanguinis line at grandparents: applicants whose closest Italian-born ancestor is a great-grandparent or earlier no longer qualify, reversing a rule that previously allowed unbroken-chain claims back multiple generations ([CNN coverage of Law 74/2025](https://www.cnn.com/2025/04/01/travel/italy-law-halts-citizenship-through-great-grandparents)). Anyone assuming an ancestry-based citizenship path stays open indefinitely should verify current eligibility before spending money on document retrieval and translation, since the rules can and do change with little notice.

Renouncing Is Not a Tax Escape Hatch

Some American expats consider the inverse move: giving up US citizenship entirely to end the FBAR/FATCA filing burden. Two legal mechanisms make this less simple than it sounds.

First, the Reed Amendment (codified within the Immigration and Nationality Act's inadmissibility grounds) designates as inadmissible any former US citizen the Attorney General determines renounced citizenship specifically to avoid US taxation — meaning a renunciation motivated by tax avoidance can theoretically bar someone from ever legally returning to the US, even to visit ([8 U.S.C. § 1182](https://www.law.cornell.edu/uscode/text/8/1182)). In practice, enforcement has been essentially nonexistent: a 2015 DHS review found zero denials issued under the provision, partly because the IRS cannot legally share individual tax records with immigration officers to establish motive. The law remains on the books and unenforced rather than repealed.

Second, anyone who meets "covered expatriate" status under IRC 877A owes an exit tax at renunciation. As of 2026, that status is triggered by any one of three tests: net worth of $2 million or more (not inflation-indexed), average annual US tax liability exceeding $211,000 over the preceding five years, or failure to certify five years of federal tax compliance on Form 8854 ([IRS, Expatriation Tax](https://www.irs.gov/individuals/international-taxpayers/expatriation-tax)). A covered expatriate is treated as if they sold their entire worldwide asset portfolio the day before expatriating, with gains above a $910,000 exclusion (2026 figure) taxed at ordinary capital gains rates immediately — due before the passport is even relinquished.

The renunciation fee itself is $2,350, unchanged since 2014 and more than five times the pre-2010 fee, and the process still requires an in-person appearance before a consular officer and issuance of a Certificate of Loss of Nationality before it's final ([Bureau of Consular Affairs, Relinquishing US Nationality](https://travel.state.gov/content/travel/en/legal/travel-legal-considerations/Relinquishing-US-Nationality.html)). Renunciations climbed from a pre-2009 baseline of 200–400 a year to a peak of 6,705 in 2020, before settling to roughly 5,000 annually in 2023–2024 — a trend driven mainly by FATCA-era banking friction and filing costs rather than the exit tax itself ([Boundless, The Rise in U.S. Citizenship Renunciations](https://www.boundless.com/research-reports/rise-in-us-citizenship-renunciations-2025)).

Practical Takeaways

• **Keep your US passport current no matter what other passport you carry.** Letting it lapse creates a genuine legal problem at the US border, not just an inconvenience.
• **File FBAR and FATCA every year you're over the threshold, regardless of citizenship status changes.** These are separate filings with separate agencies (FinCEN vs. IRS) and separate penalty structures.
• **Check the second country's dual nationality policy before naturalizing, not after.** A country that revokes citizenship automatically on foreign naturalization can undo the second citizenship before it's fully in hand.
• **Verify ancestry-based citizenship eligibility against current law, not older guides.** Italy's 2025 rule change shows how fast these programs can tighten.
• **Before renouncing, run the covered-expatriate math with a cross-border tax professional.** The $2 million net worth threshold catches people who don't think of themselves as high net worth once a home and retirement accounts are counted together.
• **Register with the State Department's Smart Traveler Enrollment Program (STEP)** for consular updates, and understand that consular protection may be limited while inside your other country of nationality.

Conclusion

Dual citizenship for American expats is neither the loophole nor the liability it's sometimes portrayed as — it's closer to a rights expansion with a compliance bill attached. The benefits (EU work rights, property access, travel flexibility) are real and often substantial, but they don't touch the underlying US tax and reporting obligations, which follow citizenship rather than residency. Anyone actively pursuing a second passport should confirm current eligibility rules directly, budget for ongoing FBAR/FATCA filings as a permanent cost of the arrangement rather than a temporary hassle, and treat renunciation as a legal and financial decision requiring professional advice — not a form to fill out when the annual tax filing gets old.