Irish Citizenship Calculator
Irish naturalisation needs five years of reckonable residence in the last nine — including a continuous final year (up to 70 days of absence allowed) before your application date. Use this Irish residency calculator as a reckonable residence calculator for naturalisation: enter when your reckonable residence began, your trips outside Ireland, and a planned date, and the tool checks the final year's absences and the four years before it.
1 · Your trips outside Ireland
Add every trip outside Ireland in the 12 months before your application date. The days you leave and return count as days in Ireland — only whole days away count as absences.
2 · Your residence
3 · Where you stand
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Presence is necessary — reckonable is the real test
The statute counts reckonable residence — time in Ireland with the right immigration permission. This calculator counts it from the start date you enter, assuming unbroken permission. Before trusting the result:
- Check your stamps. Stamp 0, 1, 1G, 3, 4, and 5 time counts; Stamp 2 or 2A (student) time, time awaiting a protection decision, and any gap without permission don't.
- The structure is 1 + 4: the year before you apply must be continuous (≤70 absence days, up to 100 with exceptional circumstances), and four more reckonable years must fall in the 8 years before that year.
- Spouses and civil partners of Irish citizens must have been married or civil partners for at least 3 years and be living together; they need a continuous final year on the island of Ireland plus 2 years' residence there in the 4 years before it.
Frequently asked questions
Five years of reckonable residence out of the last nine: one year of continuous residence immediately before your application date, plus four years (1,460 days, or 1,461 when the period includes 29 February) in the 8 years before that. Spouses and civil partners of Irish citizens instead need to have been married or in a civil partnership for at least 3 years and to be living together, plus one year of continuous residence on the island of Ireland immediately before applying and 2 years' residence there in the 4 years before that.
Time with an immigration permission that counts toward naturalisation — for example Stamps 0, 1, 1G, 3, 4, and 5. Time as a student (Stamp 2 or 2A), time awaiting a protection decision, and any gap without permission don't count, so a passport full of Irish years can still contain few reckonable ones. EEA, Swiss, and UK nationals prove their residence with documents instead.
Since 31 July 2023, section 15C of the 1956 Act (inserted by the Courts and Civil Law (Miscellaneous Provisions) Act 2023) treats up to 70 days of absence in the final year as residence, plus up to 30 more days if the Minister is satisfied exceptional circumstances made them necessary. The final year runs from the same date a year before your application to the day before it. This calculator checks your absences against the 70 days and flags anything over 100, the legal maximum.
Only whole days outside Ireland count as absences — the days you fly out and back count as days in Ireland. Keep the trip log accurate: if you go over 70 days, you must list each absence and its reason in the application.
Yes — under Irish law you don't have to give up another citizenship to naturalise. Your other country's law may still require you to give up its citizenship, so check its rules.
Your entries are saved only in your own browser (localStorage). We do record usage events that aren't linked to your name, including the day total and the result category the calculator shows, but not the dates of your trips.
Keep the day record this rule needsin
Bounded
- Logs your days in each country automatically
- Exports a dated travel report when you need evidence
- Records border-crossing days in both countries
- Runs alongside your other visa, tax, and residency rules
Sources
- Irish Immigration Service — How to become an Irish citizen (naturalisation guide)
- Irish Nationality and Citizenship Act 1956, s.15A (revised) — spouses and civil partners
- Irish Nationality and Citizenship Act 1956, s.15 (revised)
- Irish Nationality and Citizenship Act 1956, s.15C (revised)
- Courts and Civil Law (Miscellaneous Provisions) Act 2023, s.8 — new s.15C (70 + 30 days)
For information only. This calculator is a planning aid based on publicly available rules, not tax, legal, or immigration advice. Border officers and tax authorities make the final call — always confirm with the official sources linked above and a qualified professional before acting.