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US Tax Help for Americans in Ireland
Short answer: Americans in Ireland file a US return on worldwide income, whether they were sent by a US employer, hired locally, run a business or retired there. All State Tax Resolution, led by Sabih Shafi, an Enrolled Agent, prepares the US side. Ireland has both an income tax treaty and a Social Security agreement with the US, and the agreement changes depending on how you are employed.
Key takeaways
A US citizen or green card holder in Ireland files a US return on worldwide income, and the IRS says the rules are generally the same as at home.
Ireland and the US count days differently. Irish residency uses 183 days in a year or 280 days over two years. The US exclusion uses 330 full days abroad, or a full-year residence test.
The exclusion is up to $130,000 for 2025 and $132,900 for 2026, per person. It does not cover pensions or Social Security benefits.
Ireland is on the IRS treaty list and has a Social Security agreement with the US. Whether you stay in US coverage depends on who sent you and for how long.
If you missed US filings, the streamlined procedures may fit when the failure was not willful.
Do Americans in Ireland have to file a US return?
Yes, in most cases. The IRS says you are taxed on worldwide income from all sources, and the filing rules are generally the same abroad as at home. That applies in Dublin, Cork, Galway, Limerick or a village in the west, and it applies to a green card holder as well as a citizen.
The Irish tax year runs from 1 January to 31 December, the same as the US calendar year, so both returns cover the same period. The regular US due date is April 15. If you live outside the US and your main place of business or post of duty is outside the US on that date, you get an automatic two extra months, to June 15, by attaching a statement. Interest on tax you owe still runs from April 15. Form 4868 adds four more months, to October 15, for filing only.
Two residency tests that do not line up
Revenue, the Irish tax authority, says you are resident in Ireland for tax if you are present for 183 days or more in a tax year, or 280 days or more in total over the current and preceding tax years together. It also says someone who is resident and domiciled in Ireland is chargeable on worldwide income. Those are Irish rules, and we leave them to an Irish adviser.
The US tests are separate. The physical presence test needs at least 330 full days in foreign countries in any 12 months in a row, and time on or over international waters does not count. The bona fide residence test needs an uninterrupted stay in a foreign country that includes an entire tax year. Under either test you also need a tax home abroad. The IRS says you do not have one while your abode stays in the US. Meeting one country's test does not mean you meet the other's.
Treaty: what it does and does not do
The IRS list of US income tax treaties includes Ireland. The IRS also says most income tax treaties contain a saving clause that stops a US citizen or resident from using the treaty to avoid tax on US source income. So the treaty does not replace your US return. Specific articles can matter for specific income, and we read them for your facts instead of assuming.
Social Security: who stays in the US system
The Social Security Administration lists an agreement with Ireland, in force since 1993. Its purpose is to stop dual Social Security tax on the same earnings. For employees working in Ireland, it says:
If a US employer sent you to work in Ireland for five years or fewer, you stay in the US system.
If the US employer sent you for more than five years, you were hired in Ireland, or you work for a non-US employer, Irish coverage applies.
Whichever system covers you, you need a certificate of coverage from that country to prove the exemption in the other. For the self-employed, the agreement assigns coverage by where you live: self-employed workers who reside in Ireland are assigned Irish coverage, and those who reside in the US are assigned US coverage. A self-employed person under Irish coverage attaches a copy of the certificate to the US return every year. If US coverage applies, they owe US self-employment tax, and the exclusion does not reduce it.
Exclusion or credit
The foreign earned income exclusion, claimed on Form 2555, leaves up to $130,000 of foreign earnings out of US income tax for 2025, and up to $132,900 for 2026, per person. The IRS says foreign earned income does not include pension or annuity payments, including social security benefits, or pay from the US government. A retiree in Ireland cannot use the exclusion on that income.
The foreign tax credit, claimed on Form 1116, reduces US tax by qualifying foreign income taxes. The IRS says you cannot take a credit for tax on income you exclude. We run both ways and show you which comes out better.
Euros, bank accounts and FATCA
You must report amounts on a US return in US dollars. The IRS says you generally use the exchange rate in effect when you receive, pay or accrue the item, and it generally accepts any posted rate used consistently. The IRS yearly average rate table lists the euro.
FBAR (FinCEN Form 114). FinCEN says you must file if your foreign financial accounts together exceed $10,000 at any time in the calendar year. It is filed online with FinCEN, not with your return, and due April 15 with an automatic extension to October 15.
Form 8938. It is attached to your return. If you live abroad by the IRS definition, the thresholds are above $200,000 on the last day of the year or $300,000 at any time for a return that is not joint, and $400,000 or $600,000 for a joint return.
The US Treasury lists an intergovernmental agreement with Ireland as in force. The IRS says FATCA generally requires foreign financial institutions to report on assets held by their US account holders. Treat your Irish accounts as visible to the IRS.
Behind on US filing from Ireland?
The streamlined foreign offshore procedures are for people abroad whose failures were non-willful, meaning negligence, inadvertence, mistake or a good faith misunderstanding of the law. The IRS asks for returns for the most recent three years with a passed due date, FBARs for the most recent six years, all tax and interest paid with the returns, and Form 14653 certifying non-willful conduct. You need no US abode and at least 330 full days outside the US in one of the three years.
The IRS says a filer who qualifies and follows the instructions is not subject to failure-to-file, failure-to-pay, accuracy-related, information return or FBAR penalties, unless an exam finds fraud or a willful FBAR violation. A civil exam or criminal investigation already underway rules the procedures out. If your conduct may have been willful, talk to us before filing.
State taxes after you move
California's Franchise Tax Board treats you as a resident if you are domiciled in California but outside the state for a temporary or transitory purpose. Other states have their own tests. We check your last state's rules instead of guessing.
How we help
I am Sabih Shafi, an IRS Enrolled Agent, federally licensed to represent taxpayers before the IRS in all 50 states. We work by phone and video, in English or Spanish, with Americans anywhere in Ireland.
Your US return: Form 1040 with Form 2555 or Form 1116, run both ways.
Assignments and local hires: we check which Social Security system covers you and what certificate you need.
Foreign account reports: FBAR and Form 8938 checks.
Missed years: several unfiled years prepared, with a straight answer on whether streamlined fits.
A flat fee quoted in writing before work starts.
Frequently Asked Questions
Do I file a US return if I live in Ireland and pay Irish tax?
Yes, if you are a US citizen or green card holder with income above the filing threshold. Irish tax you paid may reduce your US tax through the credit.
Does Ireland have a tax treaty with the US?
Yes. Ireland is on the IRS list of US income tax treaties. Most treaties contain a saving clause, so we check the specific article for your income.
Does the US have a Social Security agreement with Ireland?
Yes, in force since 1993. If a US employer sent you for five years or fewer, you generally stay in the US system. Local hires and the self-employed are assigned by the agreement's rules.
Does my Irish residency mean I qualify for the US exclusion?
Not by itself. The US tests are separate: 330 full days in foreign countries, or a full tax year of bona fide residence, plus a foreign tax home.
Do I need an FBAR for my Irish bank account?
If all your foreign accounts together exceed $10,000 at any time in the year, yes. Balances are added across accounts.
Can you prepare my Irish tax return?
No. We prepare the US side only, and work with the figures your Irish preparer gives us.
General information, not tax advice for your situation.
Related Reading
Talk to an Enrolled Agent
This article is general information, not individual tax advice. If you want to talk through your own IRS or state balance, book a free 20-minute review or call or text us directly.
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