What Are the Downsides of Dual Citizenship?

Dual citizenship offers major benefits—but it also carries responsibilities that applicants should understand before committing.

1. Double Legal Obligations

Dual citizens must follow the laws of both countries. This may include:

• Tax filing requirements

• Military obligations (not applicable for most dual nationals unless residing long-term in Greece)

• Legal responsibilities while within a country’s borders

2. Tax Considerations

The U.S. taxes citizens on worldwide income, regardless of where they live.

Dual citizenship does not exempt you from U.S. tax filing, though treaties and credits often reduce double taxation.

3. Paperwork & Renewals

Managing two passports means:

• Two renewal schedules

• Two sets of identification rules

• Potential extra paperwork during international travel

4. Potential Bureaucracy

Some government processes—like inheritance, property transfers, or residency rules—may involve navigating both legal systems.

5. Limited Consular Protection

When you’re in Greece, the U.S. cannot intervene if Greek law applies to you, and vice versa.

When Dual Citizenship Is Still Worth It

Despite the downsides, the benefits (EU mobility, travel freedom, generational advantages) overwhelmingly outweigh the drawbacks for most applicants.

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3. Does Greece Allow Dual Citizenship With the US?

Yes—Greece fully allows dual citizenship with the United States, and the two systems are completely compatible.

Greece’s Position

Greece strongly supports dual nationality, especially for members of the Greek diaspora. You do not need to renounce your U.S. citizenship to become Greek.

The United States’ Position

The U.S. also allows dual citizenship. Americans may hold multiple nationalities as long as they continue to:

• Use their U.S. passport when entering/exiting the USA,

• File U.S. taxes if required,

• Maintain legal obligations under U.S. law.

There is no restriction against having Greek nationality.

Why This Combination is Popular

• Huge Greek-American community

• Strong travel benefits from a Greek passport

• Full EU freedom of movement

• Ability to keep U.S. citizenship without limitation

• Intergenerational benefits for children and grandchildren

Paths That Americans Commonly Use

• Ancestry (fastest and simplest)

• Marriage

• Residency (7 years + exams)

Bottom Line

Greece and the U.S. both allow dual citizenship, making this one of the strongest dual-passport combinations available.

Use CitizenGR to streamline your application.

Download the CitizenGR app for ancestry verification, document guidance, and expert support.