Irish Citizenship by Descent / Foreign Births Registration
Irish citizenship by descent allows individuals with an Irish-born parent or grandparent to register as Irish citizens through the Foreign Births Register, administered by the Department of Foreign Affairs. This is not an application for naturalization but a registration of an existing entitlement. Once registered, the individual is a full Irish citizen with all rights, including the right to live and work in the EU and obtain an Irish (EU) passport. The generational limit is strict: grandchildren of Irish citizens may register, but great-grandchildren cannot unless a parent registered in the Foreign Births Register before the applicant's birth. Processing times have increased significantly due to high demand, particularly from the United Kingdom following Brexit.
Program Details
- Generation Limit
- Up to the second generation born abroad (grandchild of an Irish citizen); great-grandchildren are not eligible unless a parent registered in the Foreign Births Register before the applicant was born
- Estimated Cost
- $500–$3,000
- Processing Time
- 12–36 months
- Must Live in Country
- No
- Court Route Available
- No
Foreign Births Registration fee is approximately €278. Additional costs include document gathering, certified translations, and postage. Legal assistance is optional but commonly used.
Common Barriers
- ⚠Generational cutoff: only grandchildren of Irish citizens are eligible; great-grandchildren are excluded unless a parent registered first
- ⚠Parent born abroad must have registered in the Foreign Births Register before the applicant's birth — many parents are unaware of this requirement
- ⚠Long processing backlogs at the Department of Foreign Affairs (2–4 years as of recent years)
- ⚠Difficulty obtaining original Irish birth and marriage certificates for older generations
- ⚠Proof of Irish parent's or grandparent's birth registration in Ireland required
Documents Needed
- •Irish birth certificate of parent or grandparent born in Ireland
- •Marriage certificates linking each generation
- •Birth certificate of the qualifying Irish citizen ancestor
- •Applicant's own full birth certificate (long form)
- •Applicant's current passport
- •Evidence of parent's Foreign Births Registration entry (if claiming through a foreign-born parent)
- •Certified translations of non-English documents
Ancestry Records
General Register Office Ireland (GRO) & Irish Genealogy
MODERATEApplicants must obtain the full (long-form) birth certificate of the Irish-born parent or grandparent. Irish civil registration began in 1864; pre-1864 records are church-based (Catholic, Church of Ireland) and available at the National Archives and IrishGenealogy.ie. Apostilles are not required on Irish documents submitted to the DFA; however, foreign documents (e.g., applicant's own birth certificate) issued outside Ireland must be legalized according to the requirements of the issuing country. Certified translations are required for non-English documents. Current FBR processing time is approximately 30 months as of early 2025.
Recent Changes
The Department of Foreign Affairs (DFA) announced a new online Foreign Births Registration system to partially replace the paper-based process, aiming to reduce the processing backlog. As of early 2025, the backlog remains approximately 30 months.
source →Following Brexit, demand for Irish FBR surged significantly from British residents with Irish-born grandparents, contributing to the multi-year processing backlog.
source →
Programme FAQs
Can I claim Irish citizenship through a great-grandparent?
Sources: ireland.ie
How long does Foreign Births Registration take?
Sources: ireland.ie
Do I need to speak Irish (Gaelic) or pass a language test?
Sources: irishimmigration.ie
Does Ireland allow dual citizenship?
Sources: ireland.ie
Related Guides
Citizenship by descent: who actually qualifies
A plain-English map of which countries offer jus sanguinis, how many generations back they accept, which require court proceedings, and where recent reforms (UK, Germany, Italy, Portugal, Spain) opened or closed doors.
Fastest paths to an EU passport in 2025
A sourced comparison of the shortest EU naturalisation timelines, from 2-year descent fast-tracks to 5-year residency routes — plus the hidden requirements that extend them in practice.