Citizenship Through Irish-Born Grandparent (Foreign Births Register)

You apply for Irish citizenship through an Irish-born grandparent by registering in the Foreign Births Register (FBR), an online system administered by the Department of Foreign Affairs and Trade. The process is entirely online and by post—no in-person interview is required. You cannot bring your application to the Department's office in person; applications must be sent by post to Dublin.

Step 1: Confirm Your Eligibility

Before gathering documents, verify you have a qualifying claim using the Department of Foreign Affairs' online eligibility questionnaire.

To qualify, you must meet all of these conditions:

• At least one grandparent was born on the island of Ireland (Republic or Northern Ireland)
• Neither of your parents was born in Ireland (if either parent was born in Ireland, you are automatically an Irish citizen and do not need the FBR—you can apply directly for an Irish passport)
• You were born outside Ireland
• Your grandparent was born in Ireland, not merely an Irish citizen by descent — this is critical. If your grandparent obtained Irish citizenship through their own parent but was not born in Ireland, you cannot claim through them.

Step 2: Gather Original Documents

You will need original state-issued documents for three generations: yourself, your Irish-citizen parent (the child of your Irish-born grandparent), and your Irish-born grandparent. Photocopies are not accepted. DNA results from AncestryDNA, 23andMe, or similar services are not accepted as proof of lineage.

For yourself:

• Completed, signed and witnessed application form
• Original civil birth certificate (showing parental details)
• Original civil marriage certificate (if applicable) or other change of name document (if applicable)
• Photocopy of current state-issued photographic ID document (passport, driver's licence, national identity card) certified as a true copy of the original by your witness
• 2 separate original proofs of address
• 4 colour photographs (2 of which to be witnessed) — do not attach these to the application form

For your Irish-citizen parent:

• Original civil birth certificate (showing parental details)
• Original civil marriage certificate (if applicable) or other change of name document (if applicable)
• Photocopy of current state-issued photographic ID document (passport, driver's licence, national identity card) certified as a true copy of the original by a professional witness, or original civil death certificate (if applicable)

For your Irish-born grandparent:

• Original civil birth certificate (showing parental details)
• Original civil marriage certificate (if applicable) or other change of name document (if applicable)
• Photocopy of current state-issued photographic ID document (passport, driver's licence, national identity card) certified as a true copy of the original by a professional witness, or original civil death certificate (if applicable)

Special cases:

• Grandparent born before 1864: If your grandparent was born before 1864 (when Irish civil birth registration began), a baptismal certificate can be accepted instead of a birth certificate.
• Adopted grandparent or parent: If you are applying through an adoptive grandparent or parent, you will require an adoption certificate issued by the central authority in the country in which the adoption took place, along with other required documents.

Apostille and translation:

• Documents issued outside Ireland may require apostille certification — a certificate issued by the authority that issued the original document, confirming its authenticity. Costs typically range from $5–30 per document in the United States, CAD $50 in Canada, and AUD $80 in Australia.
• Documents not in English or Irish must be translated by a certified translator. Translation costs typically range from €20–€50 per page.

Step 3: Find an Appropriate Witness

A professional witness must certify your identity documents and application form. The witness must be personally known to you but is not a relation, and must be currently practicing in their profession. Acceptable witnesses include:

Garda Síochána / Police Officer, School Principal / Vice Principal / Teacher / School Secretary / Pre-school Manager / Montessori Teacher / Lecturer, Member of Clergy, Medical Doctor, Nurse, Physiotherapist, Speech Therapist, Pharmacist, Dentist, Lawyer, Notary Public / Commissioner for Oaths, Peace Commissioner, Bank Manager / Assistant Bank Manager or Credit Union Manager or Assistant Manager, Accountant, Elected Public Representative, Vet, Chartered Engineer.

The witness must:

• Sign and date the application form and two of the four photographs
• Use their official stamp (or provide a business card if they do not have a stamp)
• Certify a photocopy of your state-issued photographic identity document as a true copy of the original

Step 4: Complete the Online Application

Access the application at the Department of Foreign Affairs FBR portal. Complete the application form with accurate information about you and your ancestry. Print the completed application for your records.

Step 5: Pay the Application Fee

Payment is made online when you enter your application. The fee must be paid at the time of application. Payment is accepted by credit or debit card.

For adults (18 years and over): €270 registration fee plus €8 postage and handling = €278 total

For applicants under 18 years: €145 registration fee plus €8 postage and handling = €153 total

Step 6: Prepare Your Mailing Package

Organize your documents in chronological order by generation. Ensure all original documents are included, the application form is signed and witnessed, and two of the four photographs are witnessed. Do not send a prepaid envelope; all documentation will be returned by recorded mail.

Step 7: Submit Your Application by Post

Mail your complete package to the Foreign Births Register Department. The address will be printed on your application form. It is advisable to send your application by recorded post so that you can track its delivery. The Department does not acknowledge receipt of post.

All applications are now processed in Dublin; embassies and consulates do not process Foreign Birth Registration applications.

Step 8: Wait for Processing

Applications are processed in strict date order. Processing time begins when all supporting documents are received. Current processing time is approximately 9 months from receipt of supporting documents. Applications requiring clarification or further documents take longer. If you require further documentation, the Passport Service will contact you.

Step 9: Receive Your FBR Certificate

Once your application has been successful, your details will be entered in the Foreign Births Register and you will be emailed your official Irish Birth Registration (FBR) certificate. All your original certificates will be returned by recorded mail—you will have to sign for the package.

Step 10: Apply for an Irish Passport

Once registered in the FBR, you are officially an Irish citizen and can apply for an Irish passport. You cannot apply for an Irish passport until you are an Irish citizen and have received your FBR certificate.

Item	Cost
Adult FBR registration and certificate (18+)	€270
Minor FBR registration and certificate (under 18)	€145
Postage and handling (all applicants)	€8
Adult total	€278
Minor total	€153

Additional typical costs (not included in the above):

• Obtaining birth and marriage certificates for yourself and relatives: €10–€50 per certificate (varies by country)
• Apostille certification: $5–30 per document (U.S.), CAD $50 (Canada), AUD $80 (Australia)
• Translation of documents not in English or Irish: €20–€50 per page
• Irish passport application: approximately €75 for adults, €20 for children (if applied for in Ireland; embassies abroad may charge different amounts)

Most applicants budget a few hundred euros in total for an FBR application beyond the registration fee itself.

Standard processing time: Approximately 9 months from receipt of all supporting documents (as of March 2026). This represents a significant improvement from 2023, when processing times exceeded 2.5 years.

Factors that affect speed:

• Incomplete applications delay processing. To avoid delays, ensure that all required original state-issued documentation, including birth, marriage and death certificates, are included with your application, and that the application fee is paid at the time of application.
• Applications requiring clarification or further documents take longer. If the Passport Service needs additional information, they will contact you.
• Current backlog: As of April 2025, approximately 45,000 FBR applications were in the system. Community reports from November 2025 confirm that approvals are returning to the 9-month average after severe pandemic backlogs.

End-to-end timeline: The typical timeline from application to receiving an Irish passport is 24 to 30 months, accounting for the 9-month FBR processing time plus the time required to gather documents and apply for a passport afterward.

Expectant parents: If an expectant parent is not on the Foreign Births Register when the child is born, the child will not be entitled to Irish citizenship. Expectant parents can contact the Foreign Birth Registration Customer Service Hub to request urgent processing. However, the Passport Service cannot give assurances that urgent requests will be accommodated in time.

Document validity: Once you are registered in the FBR, your Irish citizenship is effective from the date of registration, not from your date of birth. Your Irish citizenship status does not expire.