The short answer
- When: after 5 years in the last 9, with the final year continuous and no more than 70 days away (100 with exceptional reasons).
- How: no calculator and no IRP cards: documents for each year, at least one strong one.
- Catch: you must have held your nationality for more than 5 years, or the non-EU rules apply.
- Spouse of an Irish citizen? 3 years can be enough.
- Cost: €175 to apply, €950 once approved.
Plan your application
EU and UK citizenship planner
Your rules, your earliest date, and the proof for each year.
To register for the first time
From ISD’s citizenship guide. Nothing you enter is sent or saved. Gaps in your time here, or long trips in earlier years, can change your date.
How it’s different for you
Most naturalisation rules are the same for everyone: age, good character, the absence rule and the intention to keep living here. What’s different is how you prove your residence.
| EU, EEA, Swiss and British citizens | Everyone else | |
|---|---|---|
| Residence calculator | Not needed | Required |
| IRP card copies | Not needed | Required |
| Proof of residence | Documents for each year | Documents for each year, plus permission dates |
| What counts | Living here | Living here with a valid permission |
If you’ve held your EU, EEA, Swiss or UK nationality for 5 years or less, you apply under the non-EU rules, with the calculator, and time here without a valid immigration permission doesn’t count. That matters if you got an EU passport recently, for example through a parent or grandparent.
Proof for each year
ISD wants proof for the 12 months before you apply and 4 other years in the 8 before that. For each year:
| Strong official documents (100 points) | Supporting documents (50 points) |
|---|---|
| Bank statement with regular transactions | Utility bills |
| Employment Detail Summary from Revenue | Tenancy agreement or rent letter |
| Social Protection contribution or payment record | Letter from your GP or school |
| Revenue letter showing your tax record | Credit card statement |
Each year needs 150 points, including at least one strong document: usually 2 or 3 documents. Strong documents must show your name, your Irish address and a date in that year.
Spouses and civil partners of Irish citizens
If you’re married to, or the civil partner of, an Irish citizen, you can apply after 3 years living on the island of Ireland (Northern Ireland included) in the last 5, with the final year continuous, if you’ve been married and living together for 3 years.
British citizens
British citizens follow the same rules, but many are entitled to Irish citizenship already: born in Northern Ireland, or with an Irish-born parent or grandparent.
Keeping your own citizenship
Ireland allows dual citizenship. Your own country’s law decides whether you keep its citizenship when you become Irish, so check first.
After you apply
The process is the same as for everyone: Garda vetting, a decision, the €950 certification fee and a citizenship ceremony.
Common mix-ups
Common questions
Can EU citizens become Irish citizens?
Yes. EU, EEA, Swiss and British citizens can apply to naturalise after 5 years living in Ireland in the last 9, with the final year continuous, if they meet the other conditions like good character.
Do I need to use ISD's residence calculator?
No, if you've held your EU, EEA, Swiss or UK nationality for more than 5 years. You prove your history in Ireland with documents instead. You don't need an IRP card either.
What documents prove each year?
2 to 3 documents a year, including at least one strong official one: a bank statement with regular transactions, an Employment Detail Summary, a Social Protection record or a Revenue letter. Utility bills, a tenancy agreement, or letters from your GP or school can support them. ISD scores them, and wants 150 points a year.
I became an EU citizen recently. Which rules apply?
If you've held your EU, EEA, Swiss or UK nationality for 5 years or less, you apply under the non-EU rules, with ISD's residence calculator. Time here without a valid immigration permission doesn't count.
I'm married to an Irish citizen. Is it quicker?
It can be: 3 years living on the island of Ireland in the last 5, the final year continuous, and 3 years married and living together.
How long can I be away in the year before I apply?
Up to 70 days, plus up to 30 more for exceptional reasons with evidence. Over 100 days, your application is ineligible.
Can I keep my own citizenship?
Ireland allows dual citizenship. Whether you keep your other citizenship depends on your own country's law, so check before applying.
How much does it cost?
€175 to apply, then a €950 certification fee once you're approved, before the citizenship ceremony.
What changes once I'm Irish?
You can vote in every election and referendum, including Dáil and presidential elections, and get an Irish passport.
Sources
All sources checked on 4 Oct 2026.
- How to become an Irish citizenImmigration Service Delivery
- Right to voteCitizens Information