1. What Is Dual Citizenship and How Does It Arise?
Dual citizenship means a person simultaneously holds legal citizenship in two countries, with the full rights and obligations that each status carries.
Under US law, dual citizenship arises in one of three ways. A child born on US soil acquires citizenship automatically under the Fourteenth Amendment; if the parents' home country also grants citizenship by descent, the child holds both from birth. A child born abroad to at least one US citizen parent may acquire US citizenship at birth under 8 U.S.C. § 1401 while retaining the citizenship of the country of birth. Finally, a US permanent resident who naturalizes does not automatically lose their original citizenship. Whether that original citizenship continues is a question of the other country's law, not US law.
The Immigration and Nationality Act contains no provision that expressly authorizes or prohibits dual citizenship. The US government acknowledges it as a practical reality. For more detail on how our firm approaches these cases, see our Dual Citizenship practice page.
2. Does the Us Allow Dual Citizenship?
The US has no official policy that endorses or prohibits dual citizenship. Under 8 U.S.C. § 1481, a US citizen loses citizenship only by voluntarily performing certain acts with the specific intent to relinquish nationality. Naturalizing in a foreign country, without that intent, does not cause loss of US citizenship.
For foreign nationals pursuing naturalization, USCIS does not require applicants to renounce their original citizenship as part of the N-400 process. Whether the applicant retains their original citizenship depends entirely on that country's domestic law.
3. Benefits of Holding Dual Citizenship
Dual citizens can draw on rights and protections from both countries across travel, employment, property, and social services.
| Benefit | What it means in practice |
| Travel | Visa-free entry to both countries; use of either passport |
| Employment | Work authorization in both countries without separate permits |
| Education | Resident tuition rates and access to public universities in both countries |
| Property | Purchase and inherit real property under the laws of either country |
| Social services | Eligibility for healthcare, pensions, and public benefits where applicable |
Travel
- What it means in practiceVisa-free entry to both countries; use of either passport
Employment
- What it means in practiceWork authorization in both countries without separate permits
Education
- What it means in practiceResident tuition rates and access to public universities in both countries
Property
- What it means in practicePurchase and inherit real property under the laws of either country
Social services
- What it means in practiceEligibility for healthcare, pensions, and public benefits where applicable
For families with cross-border ties, dual citizenship also simplifies long-term estate and inheritance planning, particularly where one country applies favorable tax treatment to transfers between citizens.
4. Tax Obligations for Dual Citizens
Dual citizenship comes with real financial reporting obligations under US law, and these apply regardless of where a citizen actually lives. Two separate federal requirements govern foreign account disclosure, and failure to meet either can result in significant penalties.
Fatca and Fbar Reporting
The United States taxes its citizens on worldwide income regardless of where they live or hold additional citizenship. Under the Foreign Account Tax Compliance Act, US citizens with foreign financial assets exceeding $50,000 (or $100,000 for married couples filing jointly) must report those assets on Form 8938 with their annual federal return. The Bank Secrecy Act separately requires filing FinCEN Form 114, the FBAR, if foreign account balances exceed $10,000 in aggregate at any point during the year. Willful failure to file FBAR can result in penalties of up to the greater of $100,000 or 50% of the account balance per violation.
Tax Treaties
The United States maintains income tax treaties with many countries that can reduce or eliminate double taxation on specific income categories. These treaties do not remove the obligation to file a US tax return, and their provisions vary significantly by country. Our attorneys advise dual citizens on FBAR and FATCA compliance and treaty-based filing positions tailored to each client's second country.
5. Challenges and Restrictions to Plan for
Holding citizenship in two countries creates obligations that do not always align cleanly under US law. The issues below come up most often for New York clients managing dual status.
Military Service and Foreign Obligations
Some countries impose mandatory military service on their citizens regardless of where those citizens reside. A dual citizen may face service obligations in their second country that conflict with US employment, travel plans, or other commitments. The degree of risk depends on the specific country's laws and the individual's circumstances.
Security Clearances and Federal Employment
Federal security clearance investigations treat dual citizenship as a foreign preference indicator. It does not automatically disqualify an applicant, but it requires disclosure and typically prompts additional review. Certain federal positions, particularly those involving classified work, may also carry additional restrictions for dual citizens. Anyone considering a federal position while holding dual citizenship should obtain legal advice before applying.
Consular Protection Abroad
When a dual citizen travels to their second country, that country may treat them exclusively as its own national. In practice, this limits what the US government can do to intervene or provide consular assistance in that jurisdiction
6. The Naturalization Process in New York
For permanent residents in New York who want to formalize their US citizenship, naturalization runs through USCIS and follows a defined sequence. Understanding each stage helps applicants prepare realistic timelines and avoid avoidable delays.
Eligibility and Filing
Most applicants must have held a green card for at least five years, or three years if married to a US citizen, and must have maintained continuous residence in the United States. The process begins with Form N-400, the Application for Naturalization, filed with USCIS along with supporting documents and the applicable filing fee.
Interview and Decision
After processing, applicants attend a biometrics appointment and then a formal interview at a USCIS field office, where an officer reviews the application and administers English language and civics tests. USCIS then approves the application, requests additional evidence, or issues a denial.
Oath Ceremony
Approved applicants take the Oath of Allegiance at a naturalization ceremony, at which point US citizenship is conferred. For New York residents, interviews and oath ceremonies are typically conducted at the USCIS New York City Field Office in Lower Manhattan. Processing times vary; applicants should confirm current timelines directly with USCIS at the time of filing. Our Naturalization & Citizenship team assists New York applicants with document preparation, interview readiness, and USCIS representation.
7. Working with Our NYC Immigration Attorneys
Dual citizenship involves federal immigration law, international tax obligations, and in some cases coordination with foreign governments. Our firm's immigration attorneys in New York advise clients on naturalization strategy, N-400 preparation, USCIS proceedings, and cross-border compliance. Contact our US immigration law team to schedule a consultation.
23 Feb, 2026
