Irish Citizenship by Descent for Americans: 2026 Guide

Irish citizenship by descent is open to many Americans. If a parent was born on the island of Ireland, you are already an Irish citizen and can apply straight for a passport. If a grandparent was born there and you and your parent were born abroad, you register on the Foreign Births Register (FBR). The FBR costs €278 for adults and takes about 12 months as of November 2026.

This guide covers each step for someone applying from the United States. It explains who qualifies, which US birth, marriage and death certificates you need, the apostille question, and the full cost. It also covers what to expect while you wait for your Irish passport.

Key facts at a glance

Question	Short answer (as of November 2026)
Parent born on the island of Ireland	You are automatically Irish. Skip the FBR and apply for a passport.
Grandparent born on the island of Ireland	You can apply to be entered on the Foreign Births Register.
Great-grandparent born in Ireland	Only possible if your parent was entered on the FBR before you were born.
Where to apply	Online at fbr.dfa.ie, then post the signed form and original documents to Dublin.
FBR fee	€278 for adults, €153 for children under 18 (includes €8 non-refundable postage).
Processing time	About 12 months from receipt of a complete application.
Passport after registration	€75 online plus a €15 postal fee if you live outside Ireland.
Dual citizenship	Both Ireland and the US allow it.

How do you qualify for Irish citizenship by descent?

You qualify through an Irish-born parent or an Irish-born grandparent. Citizenship can pass further down only if each generation registered on the Foreign Births Register before the next generation was born, according to Citizens Information.

If your parent was born in Ireland

An American whose mother or father was born on the island of Ireland is an Irish citizen from birth and does not register on the FBR. You can apply directly for an Irish passport, as explained by Citizens Information. Check this before you pay for anything.

Irish citizenship through grandparent (the most common US case)

If your grandparent was born on the island of Ireland, and both your parent and you were born abroad, you apply to enter the Foreign Births Register. This is the usual case for Americans whose grandparents emigrated in the mid-20th century.

Your parent does not need to have registered first. The claim runs from the Irish-born grandparent through your parent to you, and your parent's birth certificate is one link in the chain of documents.

Can I get Irish citizenship through a great-grandparent?

Usually not. Some websites suggest great-grandparent claims are open, but official guidance says citizenship passes on only when each generation registered before the next was born. If your great-grandparent was Irish-born, your path exists only if your parent was entered on the FBR before your birth.

The same timing rule applies to any parent who is Irish only through FBR registration. According to financetool.ie, citing DFA guidance checked on 28 October 2026, a child born before the parent's registration is not eligible through that parent.

Worked example: Your great-grandmother was born in County Cork. Your grandfather was born in Boston and was Irish from birth through her. Your mother registered on the FBR in 2001 through your grandfather. You were born in 1998, so you cannot claim through her. Your brother, born in 2003, can register through her. Neither your parents nor your grandparents were born in Ireland, so you have no other descent route.

Irish citizenship by descent requirements: the US documents you need

The Department of Foreign Affairs and Trade (DFA) requires original civil birth certificates that show parental details, and it does not accept photocopies or short-form certificates, according to the Department of Foreign Affairs and Trade. For a grandparent claim, you need records for three generations, plus proof of address and ID, as listed by Citizens Information.

Person	Documents usually needed	Where an American typically gets them
You (the applicant)	Original long-form civil birth certificate; marriage certificate if your surname changed; certified copies of your ID; two original proofs of address (not photocopies)	Vital records office of your birth state; your bank or utility company for address proofs
Your parent (born abroad)	Original long-form civil birth certificate; marriage certificate if the surname changed; certified copy of current photo ID if living, or death certificate if deceased	Vital records office of the state (or country) of birth
Irish-born grandparent	Original Irish civil birth certificate; marriage certificate; certified copy of current photo ID if living, or death certificate if deceased	Irish civil registration for the birth record; US state records for a US marriage or death

The short "abstract" birth certificate many Americans carry is exactly the short-form version the DFA rejects. Order the long-form certificate that lists both parents' names. You also need four passport photos, two of which your witness signs.

Getting your grandparent's Irish birth certificate

Irish civil birth certificates are ordered from the General Register Office in Ireland, or from GRONI (the General Register Office for Northern Ireland) if your grandparent was born in Northern Ireland. Free online record images, such as those on irishgenealogy.ie, help you find the right entry, but they are not certified civil certificates. Send the certified copy.

When names or spellings differ

Americanized names, maiden names and spelling changes are common in Irish-American families. Every difference between records should be explained by a document: a marriage certificate, a deed poll or another official name-change record. If your grandmother appears as "Bridget Sweeney" on her Irish birth record and "Bridget Kelly" on your mother's birth certificate, her marriage record is the link the DFA needs.

Do you need apostilles on US documents for the Foreign Births Register?

The DFA's published checklist for the Foreign Births Register asks for original civil certificates and witnessed ID. It does not list an apostille requirement for US documents. Apostille companies often say apostilles are required, while legal guides such as FedLaws say they may be needed. Follow the current Department of Foreign Affairs and Trade page and any request the DFA sends you about your file.

If the DFA does ask for apostilles, the process is simple, because Ireland and the US are both members of the Hague Apostille Convention.

State records (birth, marriage and death certificates) get an apostille from the Secretary of State of the state that issued them. For example, the Illinois Secretary of State charges $2 per apostille, one per document. Fees and rules vary by state.
Federal records, such as a Consular Report of Birth Abroad (CRBA), are apostilled by the US Department of State. The fee is $50, with different rules if the CRBA was issued in the last 5 years. You send a notarized Form DS-5542, ID and payment.

Irish documents, such as your grandparent's Irish birth certificate, do not need a US apostille. Our guide to document legalization and apostilles explains how apostilles differ from full legalization.

How to apply for Irish citizenship by descent from the US

You apply online at fbr.dfa.ie, pay by card, then print, sign and post the form with your original documents to Dublin, as described by the Department of Foreign Affairs and Trade. All applications are posted to and processed in Dublin; Irish consulates in the US do not handle Foreign Birth Registrations. You do not need to live in Ireland, and there is no interview.

Confirm your route. Check where your parent and grandparent were born. If your parent was born on the island of Ireland, apply for a passport instead.
Order the documents. Request long-form originals for you, your parent and your Irish-born grandparent, plus marriage certificates. Add a certified copy of current photo ID for any living parent or grandparent in the chain, death certificates for those who have died, and two original proofs of your address.
Check names and dates. Lay the certificates side by side and trace each name change through a marriage or name-change record.
Get apostilles only if the DFA asks for them for your US documents.
Complete the online form at fbr.dfa.ie. Do not use Passport Online for this step. The department has changed its name over the years, but the site is still fbr.dfa.ie.
Pay the fee online by card: €278 for an adult or €153 for a child under 18.
Print the form and meet your witness. Sign in front of them. They sign the form and two of your four photos, certify copies of your ID and add their stamp.
Post everything to Dublin using a tracked courier, since you are sending originals.
Wait for your FBR certificate, then apply for your Irish passport separately.

Who can witness your Foreign Births Register application in the US?

The approved professions are listed on the application form. They include police officers, teachers and lecturers, clergy, doctors, nurses, pharmacists and dentists, lawyers, notaries public and commissioners for oaths, bank or credit union managers, accountants, elected representatives, vets and chartered engineers. Whoever you choose must be currently practicing and know you personally, and they cannot be related to you, according to the Department of Foreign Affairs and Trade.

A notary public is on the list, but only if they know you personally. A notary you met five minutes ago at a bank or UPS store does not qualify. If your witness has no official stamp, include their business card, and ask them to add a phone number and email when certifying documents.

Official practice changes, so confirm your own case with the DFA or a qualified Irish citizenship adviser before you send original documents.

How much does Irish citizenship by descent cost?

The Irish government fees are €278 for the FBR and €90 for a first adult passport ordered online from the US, so €368 in total. You also pay your state's fees for certified certificates, any apostilles, and tracked courier postage.

The dollar figures below use an illustrative rate of $1.15 per euro. Check the current rate on the day you pay.

Item	Official fee	Approx. in US dollars
FBR, adult (includes €8 non-refundable postage)	€278	$319.70
FBR, child under 18	€153	$175.95
First adult passport, Passport Online	€75	$86.25
Child passport (5-year), Passport Online	€20	$23.00
Postal fee for passport applicants outside Ireland	€15	$17.25
Passport Card (optional)	€35	$40.25
Passport and card bundle	€100	$115.00
Illinois apostille (example state, if requested)	$2 per document	$2
US State Department apostille on a CRBA	$50 (different rules apply if issued in the last 5 years; check travel.state.gov)	$50

Fee sources: Citizens Information for the FBR, and the DFA passport fees page for passports.

Worked example: a grandparent claim from Chicago

Say you are a 45-year-old in Chicago whose grandmother was born in County Mayo and married in Illinois. Your mother and you were both born in Illinois, and the DFA asks for apostilles on your US records.

FBR adult fee: €278
Passport Online plus overseas postal fee: €75 + €15 = €90
Apostilles on five Illinois records (your birth, your mother's birth, your parents' marriage, your grandmother's marriage, your grandmother's death certificate): 5 × $2 = $10

Your Irish fees total €368, about $423.20 at $1.15 per euro. With $10 in apostilles, that comes to about $433.20, before your Illinois certificate fees, your grandmother's Irish birth certificate and courier costs to Dublin. Her Irish birth certificate is an Irish document and needs no US apostille. There is no paid priority option.

How long does the Foreign Births Register take in 2026?

As of November 2026, the DFA says processing currently takes approximately 12 months and applications are handled in strict date order, according to the Department of Foreign Affairs and Trade. The clock starts when a complete application with all documents is received, as Citizens Information explains.

The stated wait rose to about 12 months in June 2026, up from roughly 9 to 10 months in early 2025, according to EasyPassport. Third-party sites quoting 9 months or 18 to 24 months are often out of date.

Timeline example

If your complete application reaches Dublin on 1 December 2026, a 12-month estimate puts your registration around December 2027. A first-time online passport then takes about 20 working days on average, plus postage time, so you might hold your passport in early 2028. A missing document pushes you back, because the clock runs from receipt of a complete file.

Can you speed it up?

Only in two situations: expectant parents whose child would otherwise not be entitled to Irish citizenship, and stateless applicants. They call +353 1 568 3331, 9:00am to 4:30pm Dublin time, Monday to Friday. Everyone else waits in date order.

Getting your Irish passport by descent after the Foreign Births Register

After registration you receive an FBR certificate, and then you apply separately for an Irish passport. A standard 10-year adult passport on Passport Online costs €75 plus a €15 postal fee for applicants living outside Ireland, according to the Department of Foreign Affairs and Trade.

First-time applicants abroad need an identity-verification witness. Ireland introduced a new passport and passport card design on 26 June 2026.

You cannot apply for the passport before you are on the register, because citizenship runs from the date your name is entered, never earlier, according to LibertyMundo. Before you book travel, check your dates with our passport validity checker. To compare other routes, see our guide to European passport requirements.

Irish dual citizenship for Americans and US taxes

Ireland and the United States both allow dual citizenship, so becoming Irish does not affect your US citizenship. It also does not change your US tax obligations, according to Irish law firm KOD Lyons.

A Senate bill, the Exclusive Citizenship Act of 2025 (S.3283), proposes ending US dual citizenship, but as of November 2026 it has only been introduced and referred to committee, according to Congress.gov. It is not law, and current US law fully allows dual citizenship.

The US taxes its citizens on worldwide income wherever they live. Ireland taxes based on residence, not citizenship, so an Irish passport alone creates no Irish tax bill. Ignore websites claiming Ireland requires prior approval or restricts naturalized US citizens.

If you later move to Europe and work remotely, run your numbers through our FEIE calculator, and read our guide on foreign tax credits on a US brokerage account. If you turn out not to qualify, a national visa such as the France long stay visa for Americans is the usual alternative.

Common mistakes Americans make with the Foreign Births Register

Most delays come from incomplete files and timing errors, not from eligibility itself.

Registering when you are already Irish. If your parent was born on the island of Ireland, you need a passport, not the FBR.
Sending short-form or photocopied certificates. Order long-form originals showing parental details.
Leaving out proof of address or ID. You need two original proofs of address, plus a certified copy of current photo ID for any living parent or grandparent in the chain.
Forgetting marriage certificates. They link maiden names on one record to married names on the next.
Choosing the wrong witness. They must be currently practicing in an approved profession, know you personally and not be related to you. A notary who has just met you does not count.
Assuming your existing kids are covered. Children born before your registration are not eligible through you.
Applying through Passport Online. The FBR form is only on fbr.dfa.ie.
Contacting an Irish consulate in the US. Irish consulates in New York, Chicago and other US cities do not handle Foreign Birth Registrations; all applications are processed in Dublin.
Trusting old wait times. Plan for about 12 months from a complete file.

Frequently asked questions

Can I get an Irish passport through my grandparents?

Yes, if one of your grandparents was born on the island of Ireland and you and your parent were born abroad. You first register on the Foreign Births Register, which costs €278 for adults and takes about 12 months as of November 2026. After you receive your FBR certificate, you apply for an Irish passport, which costs €75 online plus a €15 postal fee outside Ireland.

My parent never registered on the Foreign Births Register. Can I still claim through my grandparent?

Yes. If your grandparent was born on the island of Ireland and you and your parent were both born abroad, you apply to the Foreign Births Register yourself. Your parent does not need to register first, and their birth certificate becomes one of your supporting documents. Parental registration only matters when the Irish-born ancestor is a great-grandparent.

Will my children be Irish citizens?

Children born after your name is entered on the register can register through you (€153 each for under-18s). Children born before your registration cannot. If you are expecting, call +353 1 568 3331 about an urgent request. Once registered, a child's 5-year Irish passport costs €20 on Passport Online, plus a single €15 postal fee for children living outside Ireland.

Will the DFA return my original documents?

Yes. Original documents are normally returned to the address on your application once it has been checked and found in order, but confirm current practice on the DFA page. Keep your own copies and a list of what you sent. Watch your email during the wait, because the DFA may ask for extra documents and a missed request can delay your file.

How do I get my grandparent's Irish birth certificate?

Order a certified civil birth certificate from the General Register Office in Ireland, or from GRONI if your grandparent was born in Northern Ireland. Sites such as irishgenealogy.ie are useful for finding the right birth entry, but their online images are not certified certificates. The Irish certificate does not need a US apostille.

Can I live and work in the EU with an Irish passport, and do I need ETIAS?

Yes. As an Irish citizen you are an EU citizen, so an Irish passport gives you free movement rights to live and work across the EU. EU citizens do not need ETIAS, so you can travel in Europe on your Irish passport without it. US law requires US citizens to enter and leave the United States on their US passport, so carry both.

References

Filed under Visa & Immigration Citizenship & PR

Muhammad Sahil

Founder and editor of EU Info Hub. Digital marketer with over seven years of freelance experience, now studying economics and business in Europe. He has been through the residence permit process himself. This article is general information, not legal or financial advice. Always confirm details with the relevant consulate or authority.