Ireland — Immigration Service Delivery / Citizens Information
Ireland citizenship & Stamp 4 date calculator
Enter your route and the date your reckonable residence began to see your earliest Stamp 4 date and your earliest Irish citizenship (naturalisation) date. The qualifying periods come from Immigration Service Delivery and Citizens Information; the dates are indicative planning estimates, not a decision.
Earliest Stamp 4
15 October 2025
21 months after 15 January 2024
Earliest citizenship
15 January 2029
5 years of reckonable residence
- • Critical Skills Employment Permit holders may apply for a Stamp 4 support letter after 21 months of employment. Naturalisation needs 5 years of reckonable residence.
- • Stamp 4: eligible after 21 months of qualifying employment.
- • Naturalisation counts only RECKONABLE residence — Stamp 1 and Stamp 4 count; student Stamp 2 and Stamp 0 do not. The final year before applying must be continuous (no more than about 70 days absent, 100 in exceptional cases).
- • You must also be of good character and satisfy the Minister; the decision is discretionary. These are indicative planning dates only — confirm with the official Naturalisation Residency Calculator and Citizens Information before relying on a date.
Worked examples
Typical profiles run through the same calculator above.
| Profile | Route & start | Stamp 4 | Citizenship |
|---|---|---|---|
| Critical Skills permit, started 15 Jan 2024 | Critical Skills Employment Permit · 15 January 2024 | 15 October 2025 | 15 January 2029 |
| General Employment Permit, started 1 Mar 2023 | General Employment Permit · 1 March 2023 | 1 December 2027 | 1 March 2028 |
| Spouse of an Irish citizen, reckonable residence from 10 Jun 2022 | Spouse / civil partner of an Irish citizen · 10 June 2022 | Already on Stamp 4 | 10 June 2025 |
| Refugee status from 30 Sep 2021 | Refugee / subsidiary protection · 30 September 2021 | Already on Stamp 4 | 30 September 2024 |
| Other Stamp 4 route, reckonable residence from 29 Feb 2020 | Already on Stamp 4 (other route) · 29 February 2020 | Already on Stamp 4 | 28 February 2025 |
| Critical Skills permit, started 29 Feb 2024 (leap day) | Critical Skills Employment Permit · 29 February 2024 | 29 November 2025 | 28 February 2029 |
Dates are produced by the calculator above from the published periods. They assume continuous, reckonable residence within the absence limits — they do not by themselves grant Stamp 4 or citizenship.
About this calculator
Ireland’s path runs from an employment permit (Stamp 1), to long-term residence (Stamp 4), to citizenship by naturalisation. Critical Skills permit holders can move to Stamp 4 after 21 months; General Employment permit holders after 57 months. Naturalisation needs 5 years of reckonable residence (3 for the spouse of an Irish citizen or for refugees), including a continuous final year. This tool does the date arithmetic over those periods; it does not assess which stamps are reckonable, your absences, or good character.
Primary source
Citizens Information — Becoming an Irish citizen through naturalisation
https://www.citizensinformation.ie/en/moving-country/irish-citizenship/becoming-an-irish-citizen-through-naturalisation/
Last checked: 2026-06-05.
FAQs
When can I apply for Irish citizenship by naturalisation?
After 5 years (1,825 days) of reckonable residence out of the last 9 years, including 1 continuous year immediately before you apply. The spouse or civil partner of an Irish citizen can apply after 3 years, as can people with refugee status.
How long until I can get Stamp 4?
Critical Skills Employment Permit holders can apply for a Stamp 4 support letter after 21 months of employment. General Employment Permit holders can apply after 57 months. Some routes (spouse of an Irish citizen, refugees) hold Stamp 4 already.
What counts as reckonable residence?
Time on Stamp 1 (employment permit) and Stamp 4 counts towards naturalisation. Student time on Stamp 2 and time on Stamp 0 do not count. The final year before you apply must be continuous, with no more than about 70 days outside Ireland (100 in exceptional circumstances).
Does this calculator confirm I will get citizenship?
No. It is date arithmetic over the published residence periods, not a decision. Naturalisation also requires good character and is granted at the Minister’s discretion. Always confirm with the official Naturalisation Residency Calculator and Citizens Information.