Expat Tax Residency in Ireland Confirm the cited source.

Ireland taxes individuals based on three overlapping but distinct concepts: residence, ordinary residence, and domicile. Each concept is determined independently and each carries different tax consequences under the Taxes Consolidation Act 1997 (TCA 1997). Understanding the interaction of all three is the starting point for any expat moving to or from Ireland.

01How does Ireland determine whether you are tax resident?

Residence is tested annually against a calendar-year period (1 January to 31 December). Under Section 819 TCA 1997 as administered by Revenue, an individual is resident in Ireland for a tax year if they meet either of two tests [1]:

The 183-day test. If you are physically present in Ireland for 183 or more days in that tax year you are resident. A day counts if you are present in Ireland at any part of that day; it is not necessary to be present at midnight [1].

The 280-day look-back test. If the total of days present in the current tax year and the immediately preceding tax year reaches 280 or more, you are resident for the current year. A safeguard applies: the look-back test does not create residency unless you were present for at least 30 days in each of the two years. If you spent only 25 days in Ireland in the prior year, the combined total cannot trigger residency regardless of how many days you accumulate in the current year [1, 2].

A person who arrives in Ireland intending to remain can also elect to be treated as resident in the year of arrival, even before the day-count tests are met, by notifying Revenue in writing. This election is typically beneficial because Irish residents gain access to the full set of personal tax credits (EUR 2,000 single / EUR 4,000 married in 2026).

Days counted. Revenue confirms that a day spent entirely in an Irish airport transit zone does not count as a day in Ireland. Similarly, a day on which a person intended to leave but was prevented by severe weather or aircraft breakdown does not count [1].

PPS number. Before engaging with Revenue, every individual must hold a Personal Public Service (PPS) number. The PPS number is issued by the Department of Social Protection and is required for all tax registrations, employer payroll (PAYE), and self-assessment (Form 11) filings. Applications are made via MyWelfare.ie online or in person at an Intreo Centre [3].

02What changes after three consecutive years of residence?

Once an individual has been tax resident in Ireland for three consecutive tax years, they become ordinarily resident from the start of the fourth year (Section 820 TCA 1997). Ordinary residence is not an accelerated or superior form of residence; it is a separate status that extends certain Irish tax obligations beyond the period of physical presence [1].

Key practical consequence: if you leave Ireland and become non-resident, you remain ordinarily resident until you have been non-resident for three consecutive years. During that three-year window you continue to owe Irish income tax on worldwide income subject to three exceptions - trading or professional income wholly earned outside Ireland, employment income for duties performed wholly outside Ireland, and the first EUR 3,810 of foreign investment income (amounts above that threshold remain fully taxable) [1].

Ordinary residence therefore creates a three-year Irish tax tail for long-term residents who depart. It also interacts with capital gains tax: disposals of foreign assets during the ordinarily-resident tail period remain within the charge to Irish CGT. Individuals approaching the three-year departure point should be aware that the tail does not end on day one of year four of non-residence; it ends only once three complete consecutive non-resident years have elapsed.

03What is domicile and how does it differ from residence?

Domicile is a common-law concept distinct from residence or nationality. It broadly means the country an individual regards as their permanent home. Everyone acquires a domicile of origin at birth (ordinarily the domicile of their father), and that domicile persists unless replaced by a domicile of choice [4].

Acquiring a domicile of choice in Ireland requires two elements: factual residence in Ireland AND a settled intention to live in Ireland permanently with no present intention to leave. Courts have consistently found that domicile of choice is difficult to establish and to change. An expat who relocates to Ireland for work, however long the stay, will generally retain their domicile of origin unless they take deliberate steps to sever their connection to their home country and clearly intend Ireland to be their permanent home.

The tax consequence of domicile is binary:

• An individual who is resident and domiciled in Ireland is liable to Irish income tax on their worldwide income.
• An individual who is resident but not domiciled in Ireland may qualify for the remittance basis of assessment.

04How does the non-domicile remittance basis work?

Under Sections 71 and 73 TCA 1997, an Irish-resident individual who is not domiciled in Ireland is charged to income tax on foreign income only to the extent that income is remitted to Ireland [4]. Foreign income kept outside Ireland and never brought in escapes Irish income tax entirely.

A remittance is any act by which the foreign income or gain is brought within the charge to Irish tax: a wire transfer to an Irish bank account, bringing cash into Ireland, using foreign income to acquire Irish assets, or applying foreign income to discharge a debt in Ireland. Revenue applies a mixed-fund ordering rule where a commingled account containing both capital and income is treated as remitting income first unless the account holder can demonstrate segregation [4].

The remittance basis under Irish law has no annual flat charge. Unlike the former United Kingdom non-domicile regime (which required a Remittance Basis Charge of GBP 30,000 to GBP 90,000 per year for long-term users), Ireland imposes no equivalent fee. The UK abolished its non-dom regime from 6 April 2025. The Irish non-dom remittance basis remains in full force as of mid-2026 with no announced change.

The remittance basis applies to foreign investment income such as overseas rental income and dividends, and to employment income relating to duties performed outside Ireland. It does not apply to Irish-source income or to foreign employment income where duties are performed in Ireland.

05What rates of tax apply to Irish residents?

A resident (and domiciled) individual is subject to three parallel levies on income: income tax, the Universal Social Charge (USC), and Pay Related Social Insurance (PRSI).

Income tax is assessed at a standard rate of 20% up to a threshold (the standard rate cut-off point) and at 40% above it. For 2026 the cut-off point for a single individual is EUR 44,000 [5].

USC applies in addition to income tax on gross income (no double taxation relief). The 2026 USC bands are:

Individuals whose total income does not exceed EUR 13,000 in a year are exempt from USC. A reduced rate of 2% applies to individuals aged 70 or over, or to holders of a full medical card, where total income does not exceed EUR 60,000 [5, 6].

PRSI is levied at 4.2% for employees (Class A1) from 1 January 2026, rising to 4.35% from 1 October 2026. Self-employed individuals pay Class S at the same rate. Employees earning EUR 352 or less per week are exempt [5].

Non-Irish-domiciled residents pay income tax, USC, and PRSI on Irish-source income at the rates above. On foreign income that is remitted, the same rates apply to the remitted amount. On foreign income not remitted, no Irish charge arises.

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06What are the filing obligations for expats?

A resident individual with non-PAYE income exceeding EUR 5,000, or whose total income exceeds EUR 30,000 where some income is not under PAYE, must file a Form 11 self-assessment return by 31 October (mid-November for ROS electronic filing) for the prior calendar year. An individual commencing residence in Ireland should register with Revenue promptly to obtain their tax registration number and, if employed, to ensure their employer receives an up-to-date Revenue Payroll Notification (RPN) to apply correct PAYE credits and cut-off points.

For individuals arriving mid-year, split-year treatment under Section 822 TCA 1997 may apply: in the year of arrival a resident can elect to be taxed as resident only from the date of arrival, excluding pre-arrival foreign employment income from the Irish charge for that part of the year. A symmetric split-year election is available in the year of departure.

Full details of treaty-based relief from double taxation, including tie-breaker provisions under Ireland's double tax agreements, are covered in the Ireland country overview. Individuals facing complex cross-border situations involving employment in multiple jurisdictions, remittance-basis tracking, or CGT on foreign assets should consult a qualified Chartered Accountant (ACA/FCA), a CTA-qualified Irish tax practitioner, or a CPA Ireland member before filing.