U.S. Taxes for Americans Living in Ireland: The 2026 Guide

Key takeaways

• US citizens and green card holders generally keep filing a US return every year after moving to Ireland, because the United States taxes on the basis of citizenship and the treaty's saving clause preserves that right.
• Ireland taxes residents on worldwide income, but individuals who are not Irish-domiciled can generally be taxed on foreign investment income and foreign-workday employment income only when it is remitted to Ireland.
• Because Irish rates are high, the foreign tax credit, not the Foreign Earned Income Exclusion, is often the better fit for Irish employment income, but the right choice depends on the reader's income mix.
• The US–Ireland totalization agreement, not the income tax treaty, decides whether you pay PRSI or US Social Security tax, and a certificate of coverage is how you prove the exemption.
• Irish and EU investment funds are generally PFICs for US purposes and are also subject to Ireland's exit-tax and eight-year deemed-disposal regime, which makes ordinary Irish retail investing unusually costly for Americans.

Do Americans living in Ireland still file US taxes?

Generally, yes. The United States taxes its citizens on worldwide income wherever they live, and Article 1(4) of the treaty lets the United States tax its citizens as if the treaty had not come into effect.

Filing thresholds, tax year 2026. The filing requirement is generally tied to the standard deduction. Under Rev. Proc. 2025-32, the 2026 standard deduction is $16,100 for single filers and married filing separately, $32,200 for married filing jointly, and $24,150 for heads of household. These amounts are indexed annually. Two exceptions matter abroad: a married person filing separately generally must file with gross income of $5 or more, and self-employed people generally must file once net self-employment earnings reach $400.

Deadlines for the 2026 return. The regular due date is April 15, 2027. A US citizen or resident who lives outside the United States and Puerto Rico, and whose main place of business is outside them, gets an automatic two-month extension to June 15, but interest still runs on unpaid tax from April 15, and a statement explaining the qualification must be attached. Form 4868 extends filing to October 15. The FBAR is due April 15 with an automatic extension to October 15.

When does Ireland treat you as a tax resident, and what does it tax?

Residence tests. Under section 819 of the Taxes Consolidation Act 1997 (TCA), you are resident for an Irish tax year if you are present 183 days or more in that year, or 280 days or more across that year and the previous one combined, with years of 30 days or fewer ignored for the 280-day count. Ireland's tax year is the calendar year, so there is no tax-year mismatch with the United States.

Ordinary residence and domicile. Under section 820 TCA, ordinary residence generally begins from the fourth year after three consecutive years of residence, based on Revenue's published guidance. Domicile is a common-law concept, separate from nationality; most Americans arrive with a non-Irish domicile of origin.

Immigration status is a separate question. An Irish immigration permission says nothing about tax residence, and tax residence grants no right to live or work in Ireland.

What Ireland taxes (confirmed in the statute). Schedule D in section 18 TCA charges tax on profits or gains accruing to "any person residing in the State" from any kind of property "whether situate in the State or elsewhere," and Case III covers income from securities and possessions outside the State. Section 71(1) computes that foreign income on the full amount arising "whether the income has been or will be received in the State or not." Section 71(2)–(3) switch this to the amounts actually received in Ireland for a person who is not domiciled in the State. The enacted text also covered Irish citizens who are not ordinarily resident; Revenue states that limb ceased for 2010 and later years.

So the accurate label is: worldwide taxation for residents, with a remittance basis for non-domiciled individuals on foreign investment income and gains. Since 1 January 2006, employment income attributable to duties performed in Ireland is taxable under Schedule E whether remitted or not; only the foreign-workday portion of a foreign employment can benefit from the remittance basis. Some practitioners note that certain offshore fund investments may not benefit from the remittance basis.

Rates, 2026. Income tax is 20% on the first €44,000 for a single person and 40% above; Budget 2026 made no change to rates, bands or credits. The Universal Social Charge (USC) is separate: 0.5% to €12,012, 2% to €28,700, 3% to €70,044, and 8% above, with an 11% rate on self-employed income above €100,000; income up to €13,000 is exempt. Employee PRSI is 4.2% from January to September 2026 and 4.35% from 1 October 2026. Budget 2027 proposes a €46,500 single standard-rate band and a €30,300 USC 2% band ceiling from 1 January 2027, not yet confirmed in enacted legislation.

Local filing. Self-assessed individuals (generally including anyone with material non-PAYE income) file Form 11 by 31 October of the following year, so the 2026 return is due 31 October 2027. Revenue typically announces a later date each year for taxpayers who both file and pay through its online ROS service.

Recent guidance. Finance Act 2025 extended the Special Assignee Relief Programme (SARP) to 2030, with a €125,000 minimum base salary for arrivals from 2026; Revenue updated its manual on 10 March 2026.

Is there a US–Ireland tax treaty?

Yes. The convention was signed in Dublin on July 28, 1997, together with a protocol and exchange of notes, and has a general effective date of January 1, 1998 under Article 29; it was amended by a 1999 convention. The articles that matter most to individuals:

• Article 2 (taxes covered). On the US side it excludes social security taxes; on the Irish side it lists income tax, corporation tax and capital gains tax. USC and PRSI are not named.
• Article 1(4)–(5) (saving clause). The United States may tax its citizens as if the treaty did not exist, except for benefits listed in Article 1(5)(a), which include Article 18(1)(b) on social security, Article 24 (relief from double taxation), non-discrimination and mutual agreement.
• Article 4(3) (tie-breaker). Permanent home, then centre of vital interests, habitual abode, nationality, and finally competent-authority agreement. A US citizen tie-broken to Ireland remains taxable by the United States.
• Article 10 (dividends). Source-country tax on portfolio dividends is generally capped at 15%.
• Article 18 (pensions). Private pensions are generally taxable only in the residence country (18(1)(a)), but the saving clause preserves US tax on citizens. Social security benefits paid by one country to a resident of the other are taxable only in the residence country (18(1)(b)), and because this is excepted from the saving clause, the Technical Explanation says the United States cannot tax its citizens resident in Ireland on US Social Security.
• Article 24(3) (re-sourcing for citizens). For a US citizen resident in Ireland, Ireland credits only the US tax the treaty would allow on a non-citizen, and the United States then credits the remaining Irish tax, re-sourcing income to Ireland as needed.
• Article 24(6) and 18(6) (remittance basis). Where Ireland taxes only remitted amounts, treaty relief is limited to the amount remitted.

How do you avoid paying tax twice?

For the general mechanics of the FEIE, the Foreign Tax Credit and the stacking rule outside Ireland-specific figures, see our guide on FEIE vs. Foreign Tax Credit.

Foreign tax credit (Form 1116). You claim a dollar-for-dollar credit for Irish income tax, limited to the US tax on foreign-source income in each category (basket), mainly general (wages, business income) and passive (interest, dividends). Unused credits can generally be carried back one year and forward ten under IRC §904(c). Because Ireland's combined marginal rate on employment income can exceed 50%, the credit often eliminates US tax on Irish wages and leaves excess credits.

Foreign Earned Income Exclusion (Form 2555). For 2026 the maximum exclusion is $132,900. It applies only to earned income, requires the bona fide residence or physical presence test, does not reduce self-employment tax, and income excluded under it cannot also generate a credit.

When each tends to fit. The credit tends to fit employees taxed at Irish rates and people who want to keep contributing to an IRA. The exclusion can fit people whose Irish tax is unusually low, for example where SARP applies.

Is USC creditable? USC is not a "covered tax" under Article 2. Whether it qualifies as a creditable foreign income tax under the Code and the 2022 foreign tax credit regulations is a question on which practitioners take differing positions — get advice before assuming either answer. PRSI is generally not creditable: IRS Publication 514 lists social security taxes paid to a country with which the United States has a social security agreement among taxes that cannot be credited.

Social security: will you pay both?

Generally not, because of the US–Ireland totalization agreement, effective September 1, 1993. This is a separate instrument from the income tax treaty.

• Employees. The general rule is coverage where you work. An employee sent from the United States to Ireland by a US employer for an expected period of five years or less generally stays in US Social Security; someone hired in Ireland or working for an Irish employer generally pays PRSI.
• Self-employed. Coverage follows residence: self-employed people residing in Ireland are assigned Irish coverage. A self-employed US citizen covered only by Ireland still files a US return, notes the exemption on Schedule SE, and attaches a copy of the Irish certificate of coverage.
• Certificates. To be exempt from US tax, you or your employer request a certificate from Ireland (form IRL/USA 1 in SSA's pamphlet); to stay in US coverage and be exempt from PRSI, the certificate comes from SSA.
• Self-employed PRSI, 2026. Class S is 4.2% until 30 September 2026 and 4.35% from 1 October 2026, with a €650 annual minimum.
• Benefits. Credits in both systems can be combined to qualify for partial benefits.

Which US forms apply to accounts and assets in Ireland?

• FBAR (FinCEN Form 114). Required if the combined maximum value of your foreign financial accounts exceeds $10,000 at any time in the year. The threshold is not indexed.
• Form 8938. For taxpayers who meet the IRS "living abroad" test, filing is generally required above $200,000 on the last day of the year or $300,000 at any time (single or married filing separately), and $400,000 or $600,000 for joint filers. The two filings overlap but are both required when each threshold is met.
• FATCA. Ireland signed a Model 1 intergovernmental agreement with the United States on 21 December 2012, given effect by section 891E TCA and S.I. No. 292 of 2014; Irish financial institutions report US persons' accounts to Revenue, which exchanges them with the IRS. Expect Irish banks and brokers to ask for a US taxpayer identification number.
• CRS. Ireland implemented the Common Reporting Standard as an early adopter, with first exchanges in September 2017. The United States does not participate in CRS.

Local pensions, retirement accounts and investment funds

Contributions. Irish relief on pension contributions does not carry over to the US return. Article 18(5) allows cross-border deductibility only in narrow cases (contributions before arrival, five calendar years or less, competent-authority agreement), and under Article 1(5)(b) the United States does not grant it to its own citizens or green card holders. The US treatment of contributions and growth depends on how the Irish arrangement is classified under US law — a fact-specific question best reviewed plan by plan with a preparer.

Reporting. Many Irish occupational schemes are trusts. Rev. Proc. 2020-17 exempts eligible individuals from Forms 3520 and 3520-A for certain tax-favored foreign retirement trusts, subject to conditions including contribution limits and local reporting; it does not remove FBAR or Form 8938. Whether a particular Irish scheme, PRSA or Auto-Enrolment account meets those conditions should be checked plan by plan.

Distributions. Under Article 18(1)(a), Ireland taxes the pension of an Irish resident; the United States also taxes its citizens, with Article 24(3) re-sourcing to allow a credit.

Investment funds. A foreign fund that meets the passive income or passive asset test is a passive foreign investment company (PFIC) under IRC §1297, and Irish- and EU-domiciled UCITS funds and ETFs generally meet it. PFIC holdings generally require Form 8621 and, without a QEF or mark-to-market election, punitive excess-distribution rules. For the full mechanics of the default regime and the available elections, see our guide on PFICs. On the Irish side, gains on Irish and equivalent offshore funds are taxed under the exit-tax regime at 38% from 1 January 2026 (down from 41%), with a deemed disposal every eight years. Budget 2027 proposes 35% from 1 January 2027, pending legislation, with deemed disposal unchanged.

US-domiciled ETFs: the position is unsettled. Revenue's 2020 manual said US, EEA and OECD ETFs followed ordinary income tax and CGT treatment. Revenue later revised its guidance on "equivalent" offshore funds, and some advisers now say many US ETFs are taxed like Irish funds. Check the current TDM 27-04-01 before relying on either view.

Running a business or company in Ireland

Classification first. The Irish Public Limited Company is on the US per se corporation list and is always a corporation for US purposes. The common private company limited by shares (LTD) and the designated activity company (DAC) are not on the list, so they are eligible entities. A foreign eligible entity whose members all have limited liability defaults to corporate classification, but it can elect another classification on Form 8832.

If it is a corporation. A US person owning more than 50% of an Irish company by vote or value generally makes it a controlled foreign corporation (CFC). That brings Form 5471 and possible current inclusions under Subpart F and the net CFC tested income regime (the former GILTI, renamed and modified by the 2025 budget law for tax years beginning after December 31, 2025). Ireland's 12.5% trading rate is below the threshold usually needed for the high-tax exception, so individual owners often look at a §962 election; this needs professional modeling.

If it is disregarded or a sole trade. Profits flow onto your US return. US self-employment tax applies unless you hold an Irish certificate of coverage under the totalization agreement, and the FEIE does not change that.

Buying, renting and selling property

• Section 121. The US home-sale exclusion ($250,000, or $500,000 for qualifying joint filers) is not limited to US homes; an Irish principal residence can qualify if the ownership and use tests are met. Gain is measured in dollars, so currency movement can create a US gain even when there is no euro gain.
• Irish CGT. Ireland's principal private residence relief generally exempts the gain on your main home. On other assets, the standard CGT rate is 33% for disposals before 7 October 2026, with a €1,270 annual exemption. Budget 2027 cut the standard rate to 31% for disposals on or after 7 October 2026, excluding development land, pending enactment in the Finance Bill. CGT on disposals from 1 January to 30 November is generally payable by 15 December of the same year.
• Euro mortgage. Repaying a euro mortgage when the euro has weakened against the dollar can produce a US exchange gain under IRC §988, while an exchange loss on a personal-use loan is generally not deductible.
• Rental income. Ireland taxes Irish rents (Schedule D, Case V). The United States taxes them too, with credit for Irish tax. US depreciation on foreign residential rental property generally uses the alternative depreciation system, though the exact recovery period is worth confirming with a preparer.

Employment, equity compensation and remote work for a US employer

Source. Pay for work physically performed in Ireland is Irish-source for US purposes, which supports a foreign tax credit. Equity awards such as RSUs are generally sourced by where you worked during the vesting period, so an award that vests after a move is often partly US-source and partly Irish-source.

Irish payroll. Income from a non-Irish employment attributable to Irish duties is within the Irish PAYE system, so a US employer may need to operate Irish payroll, with limited exceptions for short visits — the exact day threshold for those exceptions is worth confirming with a preparer.

US withholding. A US employer may keep withholding US income tax; employees expecting to claim the FEIE or credits generally adjust using Form W-4 or Form 673. Whether FICA or PRSI applies is decided by the totalization rules above.

State tax. Moving abroad does not automatically end US state tax residency — see our guide on state taxes after moving abroad.

Leaving Ireland

Irish side. Ireland has no general exit tax on individuals' unrealized gains. Ordinary residence continues for three years after you leave, so you can remain taxable on some foreign income, with an exemption for income from a trade, profession or employment exercised abroad and other foreign income up to €3,810. Split-year treatment can apply to employment income in the years of arrival and departure. Anti-avoidance rules under section 29A TCA can tax certain gains of people who are non-resident only briefly; the exact conditions are worth confirming with a preparer.

US side. Moving out of Ireland changes nothing about US filing for citizens. Renouncing citizenship, or a long-term green card holder giving up status, can trigger the §877A expatriation tax — see our guide on the US exit tax. For 2026 the covered-expatriate tax-liability test is $211,000 and the exclusion amount is $910,000, both indexed.

Mistakes Americans commonly make in Ireland

1. Buying Irish or EU funds or ETFs without realizing they are generally PFICs, then facing Form 8621 work and Irish deemed disposal on the same holding.
2. Assuming the treaty covers PRSI or USC. It does not name them. PRSI is handled by the totalization agreement, and USC creditability is unsettled.
3. Claiming the FEIE as a self-employed person and assuming it removes US self-employment tax. It does not; only an Irish certificate of coverage does.
4. Treating the remittance basis as a US benefit. Unremitted foreign income bears no Irish tax, so the full US tax applies to it.
5. Ignoring Irish payroll while working remotely for a US employer.
6. Forgetting that US Social Security is taxable only in Ireland under Article 18(1)(b), and paying US tax on it by mistake.
7. Assuming Irish pension contributions are tax-deductible in the United States because they are in Ireland.
8. Missing the FBAR because no single account exceeds $10,000, when the combined total does. If several years were missed, see our guide on the Streamlined Filing Compliance Procedures before filing anything.

Checklist

Before moving: document arrival dates and which Irish residence test you will meet; if transferring with a US employer, request a US certificate of coverage before the assignment starts; get advice before buying Irish or EU funds.

First 90 days: get a PPSN and register with Revenue's online services; confirm whether your employer operates Irish PAYE; keep a record of every foreign account.

Every year: US return (April 15, or June 15 abroad), FBAR, and Form 8938 if applicable; Irish Form 11 by 31 October if you are a chargeable person; CGT by 15 December or 31 January; track remitted versus unremitted foreign income if you claim the remittance basis.

Before leaving: time share or property disposals around both systems; check ordinary-residence and split-year rules for the departure year.

Frequently asked questions

Do I have to pay US taxes if I live in Ireland?

You generally must file; many employees taxed at Irish rates owe little or no US income tax after credits.

Does Ireland tax my US income?

If you are resident, Ireland generally taxes worldwide income. If you are not Irish-domiciled, foreign investment income and gains are generally taxed only when remitted.

Will I pay both PRSI and US Social Security?

Generally no. The 1993 totalization agreement assigns you to one system; get a certificate of coverage.

Is my US Social Security taxed in Ireland or the US?

Under Article 18(1)(b), only in Ireland if you are an Irish resident, and this applies to US citizens.

Can I buy Irish ETFs as an American?

You can, but they are generally PFICs for US tax and subject to Irish exit tax and deemed disposal.

Does the US tax my Irish pension?

Generally yes for citizens, with a foreign tax credit for Irish tax on distributions; treatment of contributions and growth depends on the plan.

When to hire a professional

• US enrolled agent or CPA with expatriate experience: for routine returns with Irish wages and US accounts.
• Irish chartered tax adviser: for residence, domicile, the remittance basis, SARP or Form 11.
• Both together: for PFICs, Irish pensions, equity that vests across a move, or an Irish company you control.
• US international tax attorney: for unfiled FBARs or returns, or renunciation.

Sources

Source	URL	Used for	Page date
IRS — Ireland tax treaty documents	https://www.irs.gov/businesses/international-businesses/ireland-tax-treaty-documents	Treaty document list	Accessed 17-Oct-2026
US–Ireland Income Tax Convention (1997) and Protocol	https://www.irs.gov/pub/irs-trty/ireland.pdf	Treaty articles 1–29	Signed 28-Jul-1997
Treasury Technical Explanation (1997)	https://www.irs.gov/pub/irs-trty/iretech.pdf	Saving clause, Article 18 analysis	1997
IRS — Automatic 2-month extension for citizens abroad	https://www.irs.gov/node/2470	June 15 deadline rule	Accessed 17-Oct-2026
IRS — Form 3520-A guidance referencing Rev. Proc. 2020-17	https://www.irs.gov/node/40536	Foreign retirement trust exemption	Accessed 17-Oct-2026
26 CFR §301.7701-2 (per se list)	https://www.ecfr.gov/current/title-26/chapter-I/subchapter-F/part-301/subpart-ECFR5ffaf3310af6b61/section-301.7701-2	Irish PLC per se corporation	Accessed 17-Oct-2026
SSA — Totalization Agreement with Ireland	https://www.ssa.gov/international/Agreement_Pamphlets/ireland.html	Agreement overview	Accessed 17-Oct-2026
SSA POMS GN 01735.105	https://secure.ssa.gov/poms.NSF/LNX/0201735105	Effective date, 1-Sep-1993	Accessed 17-Oct-2026
SSA POMS RS 02001.825	https://secure.ssa.gov/poms.nsf/lnX/0302001825	Schedule SE exemption procedure	Accessed 17-Oct-2026
Taxes Consolidation Act 1997, s.18 and s.71 (as enacted)	https://www.irishstatutebook.ie/eli/1997/act/39/section/18/enacted/en/html	Charging provisions, remittance basis	1997
Revenue TDM 34-00-01	https://www.revenue.ie/en/tax-professionals/tdm/income-tax-capital-gains-tax-corporation-tax/part-34/34-00-01.pdf	183/280-day residence test	Accessed 17-Oct-2026
Revenue TDM 05-01-21 / 05-01-21a	https://revenue.ie/en/tax-professionals/tdm/income-tax-capital-gains-tax-corporation-tax/part-05/05-01-21-20180820150311.pdf	Remittance basis, 2006 workday rule	Accessed 17-Oct-2026
Revenue, Budget 2026 summary	https://universityofgalway.ie/media/pensionsandinvestments/Budget-Summary-2026.pdf	2026 income tax rates and bands	2025
Revenue eBrief 88/2014 (via Chartered Accountants Ireland)	https://www.charteredaccountants.ie/taxsource/1997/en/act/pub/0039/eb/sec0891E-1-eb.html	FATCA IGA, 21-Dec-2012	2014
Oireachtas parliamentary answer on CRS	https://www.oireachtas.ie/en/debates/question/2018-01-17/58/	CRS first exchanges, Sept 2017	17-Jan-2018
Revenue eBrief 046/26	https://www.revenue.ie/en/tax-professionals/ebrief/2026/no-0462026.aspx	SARP manual update	10-Mar-2026
Revenue TDM 27-01A-03 (2020) and eBrief 081/23	https://www.revenue.ie/en/tax-professionals/tdm/income-tax-capital-gains-tax-corporation-tax/part-27/27-01a-03-20201001155445.pdf	US ETF treatment, unsettled position	2020 / 2023
Law Society of Ireland, 2026 tax guide (secondary)	https://www.lawsociety.ie/Solicitors/knowledge-base/practice-areas/Taxation/tax-guide/capital-gains-tax/	USC, PRSI and CGT rates 2026	2026
KPMG Ireland, Budget 2027 (secondary)	https://kpmg.com/ie/en/insights/tax/budget-2027/tax-rates-and-credits.html	Proposed 2027 changes, pending enactment	2026

A note on scope: this guide is general information, not tax or legal advice. Whether a given fact pattern — a PFIC holding, an Irish pension scheme, equity vesting across a move — triggers the rules described here depends on your own situation, and several 2027 figures remain pending enactment. Get advice from a US preparer experienced with Forms 1116, 5471, 8621 and 8938 and an Irish chartered tax adviser before you rely on anything in this guide.