Dual Citizenship in Ireland: Benefits, Eligibility, and How to Apply


Dual citizenship allows an individual to hold citizenship in more than one country. Ireland permits dual citizenship, meaning Irish citizens can legally hold citizenship in another country without needing to renounce their Irish nationality. This guide provides an overview of eligibility requirements, benefits, application processes, and key considerations for dual citizenship in Ireland.


1. What is Dual Citizenship?

Dual citizenship is the legal status in which an individual is recognized as a citizen of two or more countries. Dual citizens have rights and obligations in both nations, such as voting, working, and paying taxes, while also enjoying the travel benefits associated with both passports.

Key Points:

  • Ireland allows dual citizenship with no restrictions on how many nationalities you hold.
  • Irish citizens do not need to renounce their Irish citizenship to obtain another nationality.
  • Foreign nationals who acquire Irish citizenship are generally not required to renounce their original citizenship unless required by their home country.

2. Eligibility for Dual Citizenship in Ireland

Dual citizenship eligibility depends on how you are eligible to obtain Irish citizenship and the laws of your other country of nationality.

A. Irish Citizenship by Birth

People born on the island of Ireland before January 1, 2005, are generally Irish citizens by birth, and they retain this status regardless of other nationalities they acquire.

B. Irish Citizenship by Descent

You may be eligible for Irish citizenship if you have an Irish parent or grandparent. This process often involves registering in the Foreign Births Register if born outside of Ireland.

C. Irish Citizenship by Marriage

Spouses of Irish citizens may apply for Irish citizenship through naturalization after three years of marriage or civil partnership and legal residency in Ireland.

D. Irish Citizenship by Naturalization

Foreign nationals who have legally resided in Ireland for a specified period (usually 5 years) can apply for naturalization. Upon approval, they can hold Irish citizenship in addition to their original citizenship unless their home country requires renunciation.


3. Benefits of Dual Citizenship in Ireland

Holding dual citizenship in Ireland offers numerous benefits for Irish citizens and foreign nationals alike, including:

  • EU Freedom of Movement: As an Irish citizen, you gain the right to live, work, and study in any EU/EEA country without restrictions.
  • Access to Public Services: Dual citizens in Ireland can access healthcare, education, and other social services as any Irish citizen would.
  • Voting Rights: Irish citizens, including dual citizens, can vote in Irish national and local elections.
  • Ease of Travel: An Irish passport provides visa-free or visa-on-arrival access to over 180 countries, making it one of the most powerful passports globally.
  • Family Reunification: Dual citizenship can facilitate bringing family members to live in Ireland, as they may qualify for residence permits based on your citizenship.

4. How to Apply for Dual Citizenship in Ireland

The process of obtaining dual citizenship in Ireland depends on how you qualify for Irish citizenship.

A. Applying for Irish Citizenship by Descent (Foreign Births Register)

If you have an Irish parent or grandparent, you may be eligible for citizenship by descent. Here’s how to apply:

  1. Gather Documents: You will need birth certificates, marriage certificates, and other documents proving your relationship to your Irish ancestor.
  2. Register in the Foreign Births Register: Submit your application through the Foreign Births Register on the Department of Foreign Affairs website.
  3. Wait for Approval: Processing times vary but can take up to a year due to demand.
  4. Receive Certificate of Foreign Birth Registration: This certificate serves as proof of Irish citizenship.

B. Applying for Irish Citizenship by Naturalization

If you’ve lived in Ireland for at least five years, you can apply for naturalization, which will allow you to hold dual citizenship.

  1. Meet Residency Requirements: Typically, five years of legal residency is required, or three years if married to an Irish citizen.
  2. Submit Naturalization Application: Complete Form 8 for naturalization, submit required documents (passport, proof of residency), and pay the application fee.
  3. Attend the Citizenship Ceremony: If approved, you will attend a citizenship ceremony and receive your Irish certificate of naturalization.

5. Key Considerations for Dual Citizens in Ireland

Dual citizenship comes with unique responsibilities and potential challenges. Here are some key considerations:

  • Tax Obligations: Dual citizens may be subject to taxes in both Ireland and their other country of nationality. Ireland has double-taxation treaties with many countries to prevent double taxation.
  • Military Service: Some countries require citizens to perform mandatory military service, which could apply to dual citizens. Ireland does not have mandatory military service, but this could be a requirement in your other country of citizenship.
  • Passport Requirements: When entering or leaving Ireland, you must use your Irish passport if you are an Irish citizen. You may also need to carry your second passport when traveling to your other country of citizenship.
  • Legal Compliance: Dual citizens must abide by the laws of both Ireland and their other country. In some situations, such as in cases of consular assistance, one nationality may take precedence over the other.

6. Countries That May Not Allow Dual Citizenship

While Ireland allows dual citizenship, some countries do not permit dual nationality. Before applying, check the citizenship laws in your other country, as you may be required to renounce your original citizenship upon gaining Irish citizenship.

Common Examples:

  • China
  • India
  • Japan
  • Singapore

Citizens of these countries may lose their original nationality if they apply for and accept Irish citizenship.


7. Frequently Asked Questions (FAQs)

1. Do I have to give up my original citizenship to become an Irish citizen?
No, Ireland allows dual citizenship. However, your other country may have restrictions, so check their laws.

2. Can my children get dual citizenship if I am an Irish citizen?
Yes, children of Irish citizens may be eligible for citizenship by descent, allowing them to hold dual citizenship.

3. Does holding dual citizenship mean I have to pay taxes in both countries?
Not necessarily. Ireland has tax treaties with many countries to avoid double taxation. However, check with a tax advisor for specifics.

4. Can I vote in Irish elections if I am a dual citizen?
Yes, Irish citizens, including dual citizens, can vote in Irish national and local elections.

5. How long does it take to get Irish citizenship through the Foreign Births Register?
Processing can take several months to over a year due to demand.

6. Is there an official document showing dual citizenship status?
No specific “dual citizenship” document is issued. Once granted, your Irish passport and citizenship documents serve as proof.