Add the permissions you have held and the time you spent outside Ireland. This works out how many of your days actually count, and the earliest date you could apply.
It counts. It does not decide. Nobody can tell you in advance that citizenship will be granted, and any tool that says otherwise is guessing.
Start counting
The rule in three parts
Tap a card to turn it over
The calculator
Tell it which permissions you have held and when you were out of the country. It counts the days that are reckonable, and gives you the earliest date you could apply for citizenship.
Which passport do you hold?
This decides whether the tool can help you at all, so it comes first.
Are you married to, or in a civil partnership with, an Irish citizen?
This is the only thing that shortens the wait.
Add every permission you have held.
Read the dates off your IRP cards rather than guessing. One row per stamp. If there was a gap between two permissions, leave it, and it will show on the timeline below.
When were you outside Ireland?
Only the final unbroken year is limited, so an old holiday will not hurt you. The day you flew out and the day you flew back both count as days here, not days away.
What counts
It is time spent in Ireland on a permission that counts. Choose the stamp from your card and find out.
Start with the one people get wrong, then check your own.
Before you rely on the number
None of this applies to you. You never registered an IRP, so your residence is not measured in stamps at all. All of your time in Ireland counts, not only stamped periods, and you prove it with documents rather than with a card. ISD says plainly that you should not use a residence calculator.
Refugee status, subsidiary protection and permission to remain are all counted differently. I do not advise on those cases. Speak to a solicitor or an organisation that specialises in protection, who will be able to look at the whole picture properly.
There are also separate provisions for applicants aged 18 to 23, for applications made on behalf of a child, and for anyone whose history includes an overstay. This tool does not handle any of those.
What people get wrong
The single most common one. Stamp 2 time does not count, however long you were here and however well you did. Someone who arrived as a student in 2018 and moved onto a work permit in 2021 does not have seven years of reckonable residence. They have four.
In the earlier years it costs you only those days. In the final twelve months it breaks the continuous year completely, and the year starts again from the day your permission was restored.
It is worth checking your card dates against your renewal dates before you rely on any number. Gaps happen more often than people realise, usually while a renewal is sitting in a queue.
It is a total across the whole final year. Three three-week holidays will put you over it. Up to thirty further days can be allowed where there was a serious reason, such as illness or a family situation, but that is decided case by case and is never something to count on in advance.
Your own dates are rarely as precise as you remember them. There is nothing to gain by being first in the queue on day one, and a great deal to lose if one date turns out to be a fortnight off.
Quick answers
Yes. You are lawfully here on the day your permission expires, so the tool counts it.
No. Only the final twelve months have to be unbroken. The other four years can be split into separate blocks, as long as they sit inside the eight years before that final year began.
Yes. The residence requirement is measured across the island of Ireland, so time spent in Northern Ireland counts the same as time in the State.
Then it is three years inside the last five, rather than five inside nine, and the same unbroken final year applies.
The marriage also has to be at least three years old when you apply. That is a separate requirement, and this tool does not check it.
No. There is no account and nothing is stored. If you use the share link, your dates travel inside the link itself.
No. Residence is one condition among several. Good character is assessed separately, and the Minister has full discretion even where every condition is met.
Old gaps, a mix of stamps, a permission nobody can categorise cleanly, a long absence you had a real reason for. None of that is arithmetic, and all of it changes what should go in an application.
Read next
The documents you will be asked for, and what each year of residence has to be proved with. Free to download.
That usually means a stamp did not count, or a year quietly broke. Both are worth understanding before you plan around the date, and both are the kind of thing an hour of proper attention sorts out.
Talk it through with meOn purpose. Each one is decided case by case, and a calculator that guessed at them would be worse than one that says so.
Meeting the residence condition does not mean citizenship will be granted. Good character is assessed separately, and the Minister has full discretion. Check the current rules at irishimmigration.ie before you apply.
Official source: Immigration Service Delivery, How to Become an Irish Citizen guide, and Citizens Information, becoming an Irish citizen through naturalisation. Both checked August 2026. Rules change, so confirm anything critical against the current version before you apply.
