Irish dual citizenship by descent or naturalisation: what happens to your first passport
Ireland never makes you give up your first passport. But a naturalisation certificate can be revoked, a register entry cannot, and after Form 13 only the island-born simply return.
In short
- Ireland accepts two passports on every route. Neither naturalisation nor the Foreign Births Register asks you to give up the first one; only the law of the country that issued it can.
- Only a naturalisation certificate can be revoked. The grounds include a citizenship you take later by your own act and seven years abroad without the yearly Form 5, though by official figures the power was used seven times in 10 years.
- A register entry is still your own act. India's law names registration among the acts that end Indian citizenship, so the check on your first country comes before either route.
- Renouncing works only from abroad. Form 13 is closed to anyone living in Ireland, and only people born on the island can return with Form 1.
- State fees: naturalisation costs $1,300 (1,125 euros), or $430 (375 euros) for a child; a register entry costs $320 (278 euros), or $180 (153 euros) under 18. The 2026 bill, with eight years instead of five, is still a draft.
In detail
Irish dual citizenship is open on every route: Ireland never asks you to give up your first passport. The 1956 citizenship act has no renunciation condition, and the declaration new citizens make says nothing about any other passport. The real split runs between the two main routes. A naturalisation certificate is a grant the Minister for Justice can revoke, including over a citizenship you take later. An entry in the Foreign Births Register is a record of descent, which can be changed or deleted only if it was wrong. And anyone not born on the island who gives Irish citizenship up has no simple way back.
Two routes with different consequences
Both routes end with the same Irish passport, but the legal footing behind it differs for life.
| Naturalisation | Foreign Births Register | |
|---|---|---|
| Who it is for | People with five years of qualifying residence: one continuous year plus four of the previous eight. Three for the spouse of an Irish citizen, married for three years | People with a grandparent born on the island of Ireland, or a parent already Irish at their birth |
| Irish from | The date of the certificate | The date of the entry, not your birth |
| Who decides | The Minister, at "absolute discretion" | Officials checking documents in strict date order; the queue runs 12 months |
| Your home afterwards | You state that you intend to keep living in Ireland. A later move abroad brings Form 5 every year | Anywhere |
| What can take it away | Revocation on the five grounds of section 19 | Only the amendment or deletion of an incorrect entry, after three months' notice |
| State fees, adult | $1,300 (1,125 euros): certificate $1,100 (950 euros), application $200 (175 euros) | $320 (278 euros) |
| State fees, child | $430 (375 euros): certificate $230 (200 euros), application $200 (175 euros) | $180 (153 euros) |
| Children born later | A child born abroad after the certificate can enter the register | A child born after your entry can enter the register; one born before it cannot, so expectant parents mark this on the application |
A third group needs neither route. If your parent was born on the island and was an Irish citizen when you were born, you have been Irish since birth, and all you apply for is a passport.
The condition behind a naturalisation certificate
A naturalised person stays Irish only while the certificate stands, and section 19 lists five grounds for revoking it: fraud or misrepresentation in the application, an open act against loyalty to the State, seven years abroad without the yearly declaration, citizenship of a country at war with Ireland, and acquiring another citizenship "by any voluntary act, other than marriage or entry into a civil partnership". Two of them matter most to people with more than one passport.
The first is a later citizenship. The passport you hold when you naturalise is not the issue, because Ireland accepts it in writing. The exposure begins with a new citizenship you apply for afterwards. Irish guidance says a citizen need not renounce to take one, yet the Minister's power over the certificate stays in the act.
The second is distance. A naturalised citizen who lives outside Ireland for seven years in a row, with no reasonable excuse and no yearly Form 5, the declaration of intent to stay Irish, gives the Minister a ground to act. Certificates issued on Irish descent or associations are exempt, and so is time abroad in the public service.
Revocation is rare. By official figures, the power was used seven times in the 10 years to November 2025, and the Minister ties it to fraud and serious threats to the State. That count has a gap: a Supreme Court ruling struck down the procedure in February 2021, and it restarted only on April 7, 2025. It now begins with a notice and 28 days to object in writing; after a decision to revoke, you have 14 days to ask for an independent inquiry chaired by a retired judge. The moment for a closer look comes before a naturalised citizen applies for a third, or stops filing Form 5 after a move.
Only your first country can force a choice
Ireland will not ask you to choose, but the country that issued your first passport can, and each one does it differently. Their laws turn on one idea, a citizenship taken voluntarily, and that idea decides more than the Irish route does.
| First passport | What its own law does | What that means for an Irish applicant |
|---|---|---|
| India | Section 9 of the Citizenship Act 1955 ends citizenship when another is acquired voluntarily, by naturalisation, registration or otherwise | A register entry counts as much as a certificate, and the Indian passport goes back. India's overseas citizen card is what remains |
| China | Articles 3 and 9 of the Nationality Law: no dual nationality, and a national settled abroad who voluntarily takes a foreign one loses Chinese nationality automatically | The test is settlement abroad and your own choice, not the Irish route |
| Japan | Article 11 of the Nationality Act: nationality ends when another is acquired by your own choice | The loss falls on the date you become Irish. Those with two from childhood follow Japan's separate choice rules |
| Singapore | Article 134 of the Constitution lets the government deprive a citizen who takes another citizenship by registration, naturalisation or another voluntary and formal act | The loss comes by order, from the date of that order |
| Austria | Citizenship ends automatically when another is acquired by application, declaration or consent, unless permission to keep it was granted first | The permission has to come before the Irish date. Afterwards it is too late to ask |
The trap is the Foreign Births Register. It feels like paperwork about ancestors, yet you apply for it yourself, and India and Singapore name registration outright. A person Irish from birth through an island-born parent made no such application, which is a stronger position, but not everywhere: India treats a foreign passport as conclusive proof that the citizenship was acquired voluntarily. A British passport is the easy case: UK law lets you take another citizenship and stay British, as our guide to a second passport for UK citizens explains.
Two passports also change what an Irish consul can do. If you are detained in the country of your other citizenship, or travel on the other passport, Irish consular guidance warns that the consul may not be able to help.
Ireland allows both, but it cannot bring back a first passport lost the day you become Irish
Three mistakes cost the most here: filing in Ireland before reading what your first country's law does to new dual citizens, treating a register entry as family paperwork instead of a voluntary act, and asking for permission to keep a first citizenship after the Irish date has passed. None of them can be repaired from the Irish side. Murblz starts with the law of your first country, chooses the route and the order of dates for the family, then prepares the file and stays with you until the passport arrives. We guarantee professional work and a transparent process.
The cost of support depends on your route, your first country and the size of your family; a manager will calculate it in the chat.
Form 13 works only from abroad, and the way back is narrow
A demand to choose can also arrive later, from a new country: Japan and Singapore ask new citizens to drop what they hold, and Austrian naturalisation gives them two years to do it. For an Irish citizen, that means Form 13, the formal declaration that gives Irish citizenship up.
Section 21 sets three conditions: you are an adult, you live outside Ireland, and you hold or are about to take another citizenship. A person living in Ireland cannot file it, however firmly another country insists. You sign before an Irish diplomat or consul, a notary or a commissioner for oaths, and post it with your current Irish passport and the original register or naturalisation certificate. Citizenship ends when the declaration is lodged, or when the other citizenship arrives if you do not hold it yet.
| How you became Irish | Way back after Form 13 | What it takes |
|---|---|---|
| Born on the island of Ireland | A declaration on Form 1 | Irish again from the date of the declaration |
| By descent | A new application | For a register entry, the queue again and $320 (278 euros) |
| By naturalisation | A new application | The residence test, the Minister's discretion and $1,300 (1,125 euros) again |
Section 22 protects your spouse and the children you already have. A child born after the declaration is in a different position: Irish citizenship passes through a parent who was a citizen at the birth, and you no longer are.
What the 2026 bill would change
On September 9, 2026, the government approved a general scheme, the outline of a bill to amend the 1956 act. It is not law: by November 2 the bill had not been introduced in the Oireachtas, Ireland's parliament, and review by its justice committee comes first. As drafted, naturalisation would take eight years instead of five (two continuous years plus six of the previous ten) and spouses five instead of three, with new tests of language and civic knowledge, plus a minimum income. A sixth revocation ground would cover public policy, public order and national security.
Your first passport is not in the draft. It keeps the voluntary act ground and leaves descent, Form 13 and the register untouched, so the gap between the two routes would widen. Only one line protects applications already filed, and it covers which permissions count as residence, not the longer period itself. Anyone near the five-year mark should watch the bill's next steps.
What to check before the first form goes in
You can try this alone: the forms are public. It is more reliable with professionals, because errors here surface years later, when the first passport has gone, a child has been born on the wrong side of a date, or a yearly Form 5 has been missed. Murblz works through a clear and transparent process. We read your first country's law before any Irish form, choose the route and the order of entries for the family, prepare the file, and set out what Form 5 and Form 13 would mean for you before either comes up. The cost is available on request from a manager.
Irish naturalisation
Residence, documents, fees and the path from application to ceremony.
Learn more →Irish citizenship by descent
Grandparents, the Foreign Births Register and the order of dates for children.
Learn more →Ireland overview
Citizenship, residence, taxes and visas in one place.
Learn more →FAQ
Does Ireland allow dual citizenship?
Will registering in the Foreign Births Register cost me my first passport?
Can a naturalised Irish citizen take a third citizenship?
Can I renounce Irish citizenship while living in Ireland?
How do I get Irish citizenship back after renouncing it?
Will the 2026 bill make me give up my other passport?
Services
Murblz services in Ireland
A passport or residence permit opens the door, but life behind it is awkward without a bank account and a roof over your head. Murblz specialists help with the account, property and company in the same country. The quote is fixed in writing before work starts.
Don’t want to figure this out alone?
We handle the whole process end to end: we check your documents, match a program to your situation and give you honest timelines and costs. Ask your question in the chat: the free consultation starts right here. Legal representation before authorities and courts is handled by Murblz specialists together with locally licensed partners.
The Murblz consultant replies straight away in the chat on this page. Describe your situation and we will work it out together.
Get a free review of my caseWhat happens next
- An expert reviews your situation and goal.
- We contact you the way you prefer and answer your questions.
- You get matching programs, honest timelines and a written quote.
Our step-by-step guide explains how to send money to Ireland in 2026, and we can help with the transfer itself: ask in the chat.
Programs
Programs in Ireland
Ireland: taxes and start-up residence permit.