How to Apply for Dual Citizenship in the U.S. – Complete Guide
Applying for dual citizenship in the United States can open many opportunities, but it also comes with important responsibilities and potential challenges. While the U.S. allows individuals to hold citizenship in another country at the same time, navigating the process requires careful planning, knowledge of immigration law, and an understanding of both countries’ requirements.
At Green Card Link, its immigration attorneys provide step-by-step guidance to help you understand how dual citizenship works, whether it is the right choice for you, and how to successfully apply.
How to Apply for Dual Citizenship
If you are a foreign national who wants to become a U.S. citizen while keeping your current citizenship, there is no separate “dual citizenship application.” You simply need to apply for U.S. citizenship.
If you were born in the U.S. or abroad to a U.S. citizen parent, you are already a citizen and do not need to apply. For everyone else, U.S. citizenship is typically obtained through naturalization.
How to Become a U.S. Citizen
To apply for naturalization, you must:
- Be at least 18 years old
- Demonstrate good moral character
- Meet one of the following eligibility requirements:
- Hold a green card for at least 5 years
- Be married to a U.S. citizen for at least 3 years
- Serve or have served in the U.S. military
The process begins with filing Form N-400, Application for Naturalization, with USCIS. After filing, you will attend a biometrics appointment, complete a citizenship interview, and take the citizenship test. If approved, you will attend the oath ceremony and receive your Certificate of Naturalization.
This certificate allows you to apply for a U.S. passport, vote in elections, and fully enjoy the benefits of U.S. citizenship—all while keeping your original nationality if your home country permits it.
On average, the process takes between 1.5 to 2 years, depending on USCIS processing times and your personal background.
U.S. Citizenship Denials
In some cases, USCIS may deny your application. Common reasons include:
- Missing signatures on Form N-400
- Unpaid or missing filing fees
- Incomplete or missing supporting documents
If denied, USCIS will explain the reason. You may correct the issues and reapply or provide additional evidence if requested.
Advantages of Dual Citizenship
Dual citizenship provides significant benefits, including:
Travel Benefits
Dual citizens can travel freely between both countries and, as U.S. citizens, enjoy visa-free or visa-on-arrival access to over 180 countries.
Economic Benefits
Dual citizens can work in the U.S. without visas or permits, though certain security clearance jobs may be restricted.
Immigration Benefits
As a U.S. citizen, you can sponsor a wider range of family members—including parents and siblings—for green cards.
Costs of Dual Citizenship
To apply for naturalization, you must pay:
- Form N-400 filing fee: $640
- Biometrics fee: $85
- Total: $725
Military applicants are exempt from these fees. Additional costs may apply depending on your home country’s dual citizenship laws.
Countries That Allow Dual Citizenship
As of recent studies, over 75% of countries worldwide now permit some form of dual citizenship. Popular countries that allow dual nationality with the U.S. include Canada, Mexico, the United Kingdom, France, Italy, Australia, South Korea, and many others.
Each country has its own rules. Some, like Panama or El Salvador, place restrictions on who may qualify. Others, such as India, do not permit dual citizenship but may offer alternatives like the Overseas Citizenship of India (OCI) program.
Because laws frequently change, it is strongly recommended that you consult with an immigration attorney at Green Card Link before proceeding.
Dual Citizenship and Taxes
One of the main challenges of dual citizenship is taxation. U.S. citizens are required to file U.S. taxes regardless of where they live. Depending on your second country’s laws, you may be subject to double taxation.
Fortunately, the U.S. has Totalization Agreements with several countries—including Canada, the U.K., Germany, and Japan—that help prevent double taxation on Social Security and Medicare contributions.
It’s important to consult both a tax professional and an immigration attorney at Green Card Link to fully understand your obligations.
Risks of Losing U.S. Citizenship
While the U.S. allows dual citizenship, certain actions may put your U.S. citizenship at risk, including:
- Accepting a high-level policy position in a foreign government
- Serving as an officer in a foreign military hostile to the U.S.
- Voluntarily renouncing U.S. citizenship before a State Department official
If you are concerned about how employment or military service abroad may affect your U.S. citizenship, speak with an immigration attorney at Green Card Link for legal guidance.
How Green Card Link Immigration Attorneys Can Help
Applying for dual citizenship can be complex, with legal, tax, and international considerations at every step. At Green Card Link, its immigration attorneys have extensive experience assisting clients through the naturalization process, preparing Form N-400, and overcoming USCIS challenges.
With professional guidance, you can avoid costly mistakes, reduce delays, and maximize your chances of approval.
Contact Green Card Link today to schedule a consultation with an experienced immigration attorney and take the next step toward securing U.S. dual citizenship.