Irish Citizenship by Descent Requirements

The concept of Irish citizenship means that an individual holding such status is formally recognised as a national of the country of Ireland and a citizen of the wider European Union. This designates the person various rights, including to live and work in Ireland and other EU states, and to carry an Irish passport for identification and travel. Citizens also hold the right to assistance from Irish embassies or consulates when they are abroad (or from the same facility of another EU state in a country where there isn’t Irish representation). With an Irish passport being ranked as one of the most valuable in the world, it’s no surprise that they are in great demand!

What it is to be a citizen of Ireland and the fundamental rights they hold are all included in the Irish Constitution (also known as the Bunreacht nah Eireann). Ratified by the Irish people in 1937, the Constitution is the law of the State and is written in both Irish Gaelic and English. It establishes the State’s courts and governmental institutions and forms part of the wider human rights framework of the country. It was changes to the Irish Constitution that took away the automatic birthright to citizenship for all born in the country.

Ireland’s history and relationship with Northern Ireland is complex, and has impacted on the right to citizenship for many. Since 1998’s Good Friday Agreement was signed, those born in Northern Ireland have been able to choose whether to claim British or Irish citizenship.

Page Contents

• Entitlement to Irish citizenship
• Documents needed for Irish citizenship by descent
• Irish Foreign Birth Registration and Irish Passports: Application forms
• Irish Foreign Birth Registration: Requirements for Citizenship Ceremony
• Irish Foreign Birth Registration and Irish Passports: Application fees
• How can Total Law help?
• Irish citizenship by descent: FAQs

Who is entitled to Irish citizenship by descent?

Irish citizenship by descent is not just as simple as having a relation who is Irish and undergoing an application process. As of 2026, the criteria for entitlement to Irish citizenship by descent is as follows:

• The applicant was born in Ireland before January 1st 2005 and have at least one parent who is an Irish or British citizen at the time of birth
• The applicant was born in Northern Ireland before January 1st 2005 and have at least one parent who is an Irish or British citizen at the time of birth and resided on the island of Ireland for at least 3 of the 4 years immediately before the applicant’s birth
• The applicant was born in Ireland or Northern Ireland and at least one of their parents holds refugee status in Ireland at the time of their birth
• The applicant was born outside of Ireland or Northern Ireland but has at least one grandparent who is an Irish citizen
• The applicant was born outside of Ireland or Northern Ireland but has at least one parent who holds a residency permit in Ireland or Northern Ireland.

There are also several routes to Irish citizenship that don’t necessarily involve having an Irish parent (or parent with permission to reside in Ireland). These include:

• Citizenship through marriage – where an applicant has been in a civil relationship or marriage with a partner who is an Irish citizen and has lived in Ireland for 3 years (including same-sex marriages)
• Citizenship through Irish naturalisation – where an applicant has resided in Ireland for at least 5 years of the 9 years preceding their application
• Citizenship through investment – where an applicant is part of the Irish Golden Visa Program and invests a minimum of €1 million in Irish business and has lived in Ireland for at least 5 years.

Ireland does allow dual citizenship for those entitled to citizenship of more than one country. However, not all countries do and so this should be double checked with any existing country of nationality before an application for Irish citizenship is made.

Where an Irish citizenship is granted due to descent or association, the Minister for Justice reserves the right to waive some of the conditions of becoming a citizen. This is at their discretion.

It should be noted that applications for Irish citizenship be descent are likely to be rejected where the family member is a great grandparent (or any further removed), and by ascent (for example, where the applicant is a parent or grandparent of an Irish citizen) are almost always declined.

Applications for Irish citizenship by descent aren’t processed in the same way as visas or travel permission documents, but there are various documents that may need to be supplied in order to prove eligibility criteria is met.

Where the individual was not born in Ireland, they must apply to register their birth with the Irish Foreign Births Register. While the exact documents required for submission is dependent on the application circumstances, the following may be requested in addition to the application form:

• Original birth certificate of applicant and Irish citizen family member
• Any further medical/hospital records from the time of birth
• Original marriage or civil partnership certificate of applicant and Irish citizen family member
• Photocopy of current state-issued ID document of applicant and Irish citizen family member; certified as a true copy by the witness from the application form
• 2 separate proofs of address
• 4 colour passport photographs; 2 of which to be witnessed
• Original death certificate where Irish citizen family member has passed away
• Original Irish Naturalisation Certificate where Irish citizen family member obtained citizenship through the naturalisation process
• Original adoption certificate and adoption order where an Irish citizen family member is an adoptive parent.

The immigration service may request further documentation upon processing of the application and will do so directly to the applicant.

Once a birth has been added to the Irish Foreign Births Register, the individual concerned is considered an Irish citizen. At this point they should apply for an Irish passport, which will grant them the full rights of citizenship. Further documentation may be requested as part of the Irish passport application process.

The application form for the Foreign Births Register is completed and submitted online through the Irish Department of Foreign Affairs (An Roinn Gnothai Eachtracha) website or in person at immigration authority offices in Dublin.

The application form can be paused and saved at any time to allow applicants to return to it.

While historically the form could be completed at Irish embassies and consulates in Great Britain, the USA, Canada and Australia, the team managing Foreign Births Register applications has now been centralised and so this is no longer the case. All applications are now processed in Dublin.

Once the applicant has received their Approval Certificate and confirmation that they have been added to the Foreign Births Register, they may apply for their first Irish passport. From within Ireland and several other countries, the Irish passport application form may be completed online through the Department of Foreign Affairs (An Roinn Gnothai Eachtracha) ‘Passport Online’ service. If the new citizen is currently resident in a country not offering this service, they may need to visit their local Embassy or Consulate for application assistance.

There is no requirement for an Irish citizen who has been granted this right by descent to attend a Citizenship Ceremony as they are already considered to be Irish and so are not thought of as needing to declare their intention of loyalty to the State.

However, such events do exist for those who have obtained Irish citizenship through naturalisation or investment. These ceremonies take place periodically several times a year and invites are issued directly to applicants. During an Irish citizenship ceremony, the applicant declares an Oath of Fidelity to the nation of Ireland. Once this declaration has been made, true citizenship will be awarded and a Certificate of Irish Naturalisation issued.

The application fee for the Irish Foreign Births Register must be paid at the same time as the application form is submitted. The amount payable is €278 per adult application and €153 per child application. This cost includes a postage and handling charge for the issue of the desired Approval Certificate.

If the application is incomplete and not completed accurately within a reasonable timeframe, or rejected with no appeals are upheld then this application fee is non-refundable.

The application fee for an Irish passport is €75 for an adult passport and €20 for a child passport, with passport cards available for €35. Further fees may be required for postage (particularly internationally outside of Ireland) and for expedited services. Again, the application fee should be paid upon submission of the application form; which will not be processed until the amount has been received.