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Ireland Tax Residency Guide

Ireland tax residency — 183-day presence test, 280-day ordinarily resident test (3-year carryover), split-year residence, and domicile levy for high-wealth individuals.

Ireland's tax residency rules determine whether an individual is subject to Irish tax on their worldwide income or only on Irish-source income. The system uses three interconnected concepts — residence, ordinary residence, and domicile — to create a nuanced framework that balances the right to tax with international competitiveness. See also our guides on Cross-Border Tax, Tax Filing, and Pension & Retirement.

183-Day Presence Test

The primary test for Irish tax residence is the 183-day rule. An individual is resident in Ireland for a tax year if they spend 183 days or more in Ireland during that year. A "day" counts if the individual is present in Ireland at any point during that day — there is no minimum number of hours required. Transit through Ireland (arriving and departing on the same day, spending less than 24 hours in transit) does not count as a day of presence. This 183-day test is straightforward: count the days physically present in Ireland and if the total reaches 183, the individual is tax resident for that full year.

For the year of arrival, an individual who spends 183 days or more in Ireland becomes resident from the date of arrival (subject to split-year treatment if applicable). For the year of departure, an individual who has been resident may cease to be resident from the date of departure if the split-year conditions are met. The Revenue Commissioners operate a "day-counting" approach that is generous — travel into Ireland (day of arrival) counts as a day, but travel out of Ireland (day of departure) does not count if the individual leaves the country.

280-Day Ordinarily Resident Test

Even if an individual does not meet the 183-day test in a single year, they may become resident under the 280-day test if they spend 280 days or more in Ireland over a 2-year period, with at least 30 days in each year. In this case, the individual is treated as resident for the second year of the 2-year period. For example, someone who spends 150 days in Ireland in Year 1 and 150 days in Ireland in Year 2 (total 300 days over 2 years) would become resident for Year 2, even though they were under the 183-day threshold in both individual years.

Ordinary residence is a separate and more enduring status. An individual who has been tax resident for three consecutive tax years becomes ordinarily resident from the beginning of the fourth year. Once ordinarily resident, this status persists even during periods of non-residence — it takes three consecutive years of non-residence to lose ordinary residence. This 3-year carryover rule means that an Irish emigrant remains within the Irish tax net for certain purposes (such as the remittance basis for capital gains) for up to 3 years after leaving. The concept of ordinary residence is unique to Ireland and the UK and has no direct equivalent in most other tax systems.

Split-Year Residence

Ireland operates a split-year residence rule that divides a tax year into a period of residence and a period of non-residence for individuals who move to or from Ireland during the year. For individuals arriving in Ireland: if they were not resident in the previous tax year and they become resident in the current year, the year is split at the date of arrival. For individuals leaving Ireland: if they are not resident in the following tax year and the departure is permanent, the year is split at the date of departure.

During the Irish-resident part of the year, the individual is subject to Irish tax on worldwide income. During the non-resident part, only Irish-source income is taxable. However, split-year treatment does not apply to income from an Irish trade or profession, or from an Irish employment — such income remains fully taxable in Ireland regardless of the split. The split-year treatment must be claimed by the individual in their tax return, and Revenue may require evidence of the permanent change in residence, such as proof of sale or rental of the Irish home, establishment of a home abroad, and the centre of vital interests shifting to the new country.

Domicile Levy for High-Wealth Individuals

Ireland imposes a Domicile Levy on certain high-wealth individuals who are Irish domiciled but not ordinarily resident in Ireland. The levy is €200,000 per year and applies to individuals whose worldwide income exceeds €1 million, whose Irish-located property exceeds €5 million in value, and whose Irish income tax liability (if any) is less than €200,000. The levy was introduced in 2010 to ensure that wealthy Irish-domiciled individuals who structure their affairs to minimise Irish tax still make a minimum contribution.

The Domicile Levy applies to individuals who are: (a) Irish domiciled, and (b) not ordinarily resident in Ireland for the tax year, and (c) have a net worldwide income of at least €1 million, and (d) have Irish-located property worth at least €5 million, and (e) have an Irish income tax liability (including the levy itself) of less than €200,000. Irish-located property includes land, buildings, shares in Irish companies, and certain other assets located in Ireland. The levy is payable by self-assessment and failure to pay can result in interest and penalties. It is a significant consideration for wealthy Irish emigrants who retain substantial property holdings in Ireland.

Practical Implications

Understanding the interaction between residence, ordinary residence, and domicile is critical for tax planning. A resident and domiciled individual is taxed on worldwide income and gains. A resident but non-domiciled individual can claim the remittance basis for foreign income and gains (but foreign employment income is now taxable on a worldwide basis if the employment is exercised in Ireland). A non-resident individual is taxed only on Irish-source income and gains, but an ordinarily resident non-domiciled individual remains subject to the remittance basis for capital gains for up to 3 years after departure.

Ireland does not have an exit tax for individuals emigrating, but the domicile levy and the 3-year ordinary residence carryover mean that full tax separation from Ireland can take several years. Proper planning — including consideration of double tax agreements, timing of property disposals, and structuring of investment portfolios — is essential to manage the transition effectively. Individuals who become non-resident should also review their Irish will, enduring power of attorney, and succession planning to ensure alignment with their new country of residence.