Ireland: how residence and citizenship work

Residence tests, reporting duties, social security, living base and citizenship for Ireland, with the official source for each.

Short answer

Ireland decides tax residence by days present: 183 days or more in a tax year, or 280 days or more across the current and preceding tax years, and any part of a day counts. Residence, ordinary residence and domicile are separate tests, and Revenue describes a remittance basis for foreign income of a person who is tax resident but not ordinarily resident and not domiciled in Ireland.

Key facts

Tax basisResidence, remittance basis for some
Tax year1 January to 31 December
Taxes citizens abroadNot as a general rule
Residence tests recorded3
RegionEurope

How Ireland decides tax residence

Each test is recorded separately with its own ID. Meeting or missing one test does not settle residence on its own.

IE-RES-01Day count183 days ยท Tax yearNot professionally reviewed

183 days in one tax year

A person is resident for a tax year if present in Ireland for 183 days or more in that year. Revenue counts a day if the person is in Ireland for any part of it, with exceptions such as staying airside at an airport or port, or being unavoidably delayed on a planned departure day.

Source: How to know if you are resident for tax purposesDay method: Any part of a dayChecked: November 8, 2026
IE-RES-02Day count280 days ยท Several yearsNot professionally reviewed

280 days across two tax years

A person is also resident if present for 280 days or more in total over the current and the preceding tax year. Revenue states that a person is not resident under this test in a tax year with 30 days or less in Ireland.

Source: How to know if you are resident for tax purposesDay method: Any part of a dayChecked: November 8, 2026
IE-RES-03Registration, domicile or statusNot professionally reviewed

Ordinary residence and domicile

After three consecutive tax years of residence, a person becomes ordinarily resident from the start of the fourth year, and after leaving stays ordinarily resident for three more consecutive tax years. Domicile is a separate legal concept, broadly living in a country with the intention of living there permanently, and a domicile of origin continues unless clear evidence shows a new one. These statuses change which income is chargeable to Irish tax.

Arriving, leaving and part years

Revenue describes split-year treatment for the year a person comes to live in Ireland and for the year a person leaves permanently to take up employment abroad; the conditions are on separate Revenue pages. A person arriving with the intention of being resident the following year can elect to be resident in the arrival year by informing Revenue in writing (relates to IE-RES-01 and IE-RES-02).

Reporting duties to check

  • Election to be resident. Revenue states that a person who chooses to be tax resident in Ireland in a tax year must inform Revenue in writing. Source
  • Domicile levy. An annual levy of โ‚ฌ200,000 may apply to Irish-domiciled individuals whose worldwide income exceeds โ‚ฌ1m, whose Irish property is worth more than โ‚ฌ5m and whose Irish income tax for the year was less than โ‚ฌ200,000. Irish income tax paid in the year can be offset against it. Source

Social security

Within the EU, a person is covered by one country's social security system at a time, and which one depends on work situation and residence, not nationality. Check the EU coordination rules and any bilateral agreement for work involving non-EU countries.

Living base

EU citizens can move to Ireland under EU free movement rules, with permanent residence after a continuous 5-year period of legal residence. Others generally need an immigration permission, and the type of permission affects whether time counts toward naturalisation. An immigration permission does not decide tax residence, which follows Revenue's day tests.

How visas, permits and tax residence differ

Citizenship

Naturalisation is at the Minister's discretion and is based on reckonable residence; Immigration Service Delivery describes five years of reckonable residence that include one year of continuous residence immediately before the application, with a shorter route for spouses of Irish citizens. Immigration Service Delivery states that Irish law does not require giving up another citizenship to become Irish, although the other country's law may differ.

Read the citizenship guide

Questions to take to a professional

  1. How should my days in Ireland be counted under the 183-day and 280-day tests, including travel days?
  2. Am I ordinarily resident, and when would that status start or end for me?
  3. Where am I domiciled, and does the remittance basis described by Revenue apply to any of my foreign income?
  4. Does split-year treatment apply to my year of arrival or departure, and what are its conditions?
  5. Would an election to be resident in my arrival year change my position?
  6. If another country also treats me as resident, how does the relevant tax treaty tie-breaker apply?
  7. Does my immigration permission count as reckonable residence for naturalisation?

Official authorities

Sources

Guides that mention Ireland

Other countries in Europe

Countries covered
Ireland
Sources
9 sources listed above
Tax year
Current rules as checked
Review
Not professionally reviewed
Sources checked November 8, 2026