U.S. taxes for Americans in Ireland: what to file, and how to catch up.
Many Americans in Ireland are dual citizens or came for work at a multinational in Dublin, and all of them still file a U.S. return every year. Irish tax is usually high enough to cover the U.S. bill. The details to get right are Irish funds and ETFs, pensions and PRSAs. Most people who fell behind can catch up under the Streamlined procedures, with no penalty if they qualify.
Sound familiar?
- You moved for a job at a multinational in Dublin and stayed.
- You were born in the U.S. and grew up in Ireland.
- Your employer pays into a pension scheme or PRSA for you.
- Your Irish bank asked you to confirm your U.S. tax status.
How does the IRS treat Irish pensions, funds and savings?
Every one of these goes on your FBAR. What differs is how the IRS taxes them.
| Account | U.S. treatment | |
|---|---|---|
| Occupational pensions and PRSAs | The treaty doesn’t shelter these for U.S. citizens. Contributions and growth could be taxable for the U.S., depending on the plan. | Check first |
| Irish State Pension | Ireland taxes it, and the U.S. can too, with a credit for the Irish tax. | Mostly friendly |
| Irish funds and ETFs | Usually PFICs (Form 8621), with complex reporting and tax rules. | Watch out |
| Bank deposits | Interest is taxable for the U.S. DIRT withheld in Ireland can count toward your foreign tax credit, and the accounts count toward your FBAR total. | Taxable |
| Employee shares | Shares and options from a U.S. multinational are taxed by both countries when they vest or are sold, with credits to avoid double tax; the timing can differ. | Check first |
| Selling your home | The U.S. can exclude up to $250,000 of gain on your main home ($500,000 for couples). Currency moves can create gains too. | Plan ahead |
Which Irish investments are PFICs?
Ireland is where most European ETFs are based, so nearly every fund and ETF an Irish platform sells is an Irish fund. For U.S. tax they’re passive foreign investment companies, or PFICs, with their own reporting and harsh default tax rules.
- Each fund needs its own Form 8621 in most years, and gains can be taxed at the top U.S. rate plus an interest charge, unless an election was made in time.
- Two systems at once. Ireland taxes funds under its own exit tax, including a deemed sale every eight years; the U.S. taxes them under the PFIC rules. The two rarely line up.
- Not PFICs: shares of individual companies, including your employer’s, Irish government bonds, and bank deposits.
What does the U.S.–Ireland tax treaty actually say?
The treaty was signed in 1997 and took effect in 1998. For Americans living in Ireland, these parts matter most:
- The saving clause. The U.S. can tax its citizens as if the treaty didn’t exist, except for the provisions the treaty lists.
- U.S. Social Security. Paid to someone living in Ireland, it’s taxed only by Ireland, even for U.S. citizens.
- Relief from double tax. The U.S. gives a credit for Irish income tax on the same income. The Universal Social Charge could count too, as a tax on income; PRSI doesn’t, because the social security agreement covers it.
- Pensions. The treaty doesn’t defer U.S. tax on Irish pensions and PRSAs for U.S. citizens while they grow, which is why they need checking.
PRSI and U.S. Social Security are covered by a separate U.S.–Ireland agreement, which generally means you pay into one system, not both. Read the U.S.–Ireland tax treaty on IRS.gov.
When are Irish and U.S. taxes due?
Both tax years run January to December, so each Irish year lines up with one U.S. return. Your employment detail summary from Revenue gives most of what the U.S. return needs.
| Ireland | United States | |
|---|---|---|
| Tax year | January to December | January to December |
| Annual return | October 31 for a self-assessed return, a little later online. Most PAYE employees don’t need to file one. | April 15, moved to June 15 automatically when you live abroad, or October 15 with an extension |
| Paying the tax | Through PAYE, or with the return for self-assessed income | April 15, even if you file later |
| Foreign accounts | Foreign income and certain foreign accounts are declared to Revenue | The FBAR, due October 15, filed online |
Foreign tax credit or exclusion: which wins in Ireland?
Usually the foreign tax credit. Irish income tax hits 40% at a fairly modest salary, so Irish tax on a salary is normally more than the U.S. tax on it, and the unused credit carries forward for up to 10 years.
- The exclusion, up to $130,000 for 2025, is rarely better in Ireland, and it gives up the refundable child tax credit.
- Families with children can get the refundable part of the U.S. child tax credit, up to $1,700 per child for 2025, by using the credit.
- Fund income taxed under the PFIC rules often isn’t matched by Irish tax in the same year, which can leave a U.S. bill.
We run your returns both ways before choosing. How we compare the exclusion and the credit.
A worked example: a software engineer in Dublin
Aoife was born in Boston and grew up in Cork. She works at a U.S. tech company’s Dublin office on €75,000, with company shares vesting each year, a PRSA her employer pays into, and an Irish ETF she buys monthly. She didn’t know she had to file.
| Item | How it’s handled |
|---|---|
| Salary and vesting shares | Irish tax is higher than the U.S. tax on them, so with the foreign tax credit her U.S. tax on them is $0. |
| PRSA | On the FBAR. Her employer’s contributions and the growth could be taxable for the U.S., depending on the plan, so we check it. |
| Irish ETF | A PFIC: a Form 8621 each year, with each monthly purchase tracked separately. |
| Catching up | Three years of returns and six FBARs under the Streamlined procedures, with no penalty if she qualifies. |
Catching up from Ireland
Most Americans in Ireland who fell behind without meaning to can catch up under the Streamlined Foreign Offshore Procedures: three years of returns, six years of FBARs and, if you qualify, no penalties. If only FBARs are missing, or you’ve moved back to the U.S., another route may fit better. See every IRS catch-up option for expats, compared.
Common questions
Do I pay U.S. Social Security tax in Ireland?
Generally not if you pay into the Irish PRSI system. The U.S.-Ireland totalization agreement prevents paying into both systems for the same work in most cases.
Will the U.S. tax my U.S. Social Security if I retire in Ireland?
No. Under the U.S.-Ireland tax treaty, only Ireland can tax it while you live there, even though you’re a U.S. citizen.
Should I sell my Irish funds?
Maybe, but not before getting advice. Selling has tax consequences in both countries. We’ll show you the U.S. cost of keeping versus selling.
Is my PRSA tax-free for the U.S.?
Not necessarily. The treaty doesn’t shelter Irish pensions and PRSAs for U.S. citizens, so contributions and growth could be taxable for the U.S., depending on the plan. We check yours before filing.
Does DIRT count as a foreign tax?
Yes, generally. DIRT withheld on Irish deposit interest can count toward the U.S. foreign tax credit on that interest.
I was born in the U.S. but grew up in Ireland. Do I have to file?
Yes, if you’re still a U.S. citizen and your income is over the filing threshold. Many people in that position catch up under Streamlined, and some then renounce. Help for accidental Americans.
American in Ireland? Let's get you caught up.
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