Are you a US citizen or green card holder who has recently moved or is planning to move to Ireland? Then, you likely have some questions about the tax obligations that accompany the move.
Understanding these requirements is essential to avoiding costly fines and penalties. This guide explains everything you need to know about filing your taxes as a US citizen in Ireland.
Filing Your US Tax Return: Key Questions Answered
Understanding when and how to file your tax return is necessary for compliance with US and Irish tax laws. Here are your most important questions answered:
Do I Have to File a Return If I’m an Irish Citizen with a Green Card or a US Citizen?
Yes.
If you’re a US citizen or green card holder (even if the Green card has expired) who has gained Irish citizenship, you must file a US tax return annually if your income meets the minimum threshold required by the IRS (outlined below).
This means that regardless of your tax residency in Ireland, your tax obligations in the US remain the same.
What Are the Income Thresholds That Require Me to File a Return?
The income thresholds that require you to file a US tax return depend on your filing status and age:
| Filing Status | Age | Income Threshold |
| Single | Under 65 | $13,850 |
| Single | 65 or older | $15,700 |
| Married (filing jointly) | Both under 65 | $27,700 |
| Married (filing jointly) | One under 65 | $29,200 |
| Married (filing jointly) | Both 65 or older | $30,700 |
| Married (filing separately) | All ages | $5 |
| Head of household | Under 65 | $20,800 |
| Head of household | 65 or older | $22,650 |
| Qualifying surviving spouse | Under 65 | $27,700 |
| Qualifying surviving spouse | 65 or older | $29,200 |
There are also specific income thresholds for certain types of income:
- Self-employment income: If you earn any self-employment income, you must file a tax return, no matter how much money you make.
- Foreign earned income: If you qualify for this, you can exclude some of your foreign income from US taxes. You still need to file a tax return to claim this exclusion.
Do I Have to File a US Tax Return Even If I’ve Never Been to the US?
Yes, you must file a US tax return even if you’ve never been to the US.
US tax obligations are based on citizenship and green card status, not physical presence.
What Income Do I Need to Pay Tax on?
You will need to pay tax on all your worldwide income, including:
- Wages and salaries
- Interest and dividends
- Rental income
- Business income
- Capital gains
- Retirement income
Do I Need to File If I’m Self-Employed?
You must pay tax on all your worldwide income, even if you are self-employed.
In addition to regular income tax, you must pay self-employment taxes (Social Security and Medicare) on your net self-employment income.
Using self-employed deductions, such as home office costs, business expenses, or health insurance premiums, can help reduce your taxable income.
This is the case even if your income is earned abroad or taxed by a foreign country.
Need help from a professional?
Filing a US Tax Return whilst living in Ireland can be difficult to do by yourself. Save yourself time, money, and energy by working with an expert who can guide you.
Request assistance from a Cross-border financial planner
How Does Irish Residency Affect My Taxes?
As mentioned earlier, if you’re a resident of Ireland, you’re still obligated to file a tax return to the IRS to report your worldwide income. This includes any income earned while residing in Ireland.
Your tax residence status in Ireland is determined by how many days you spend there during the tax year.
You’re a resident in Ireland for tax purposes if:
- You’re present for 183 days or more in a tax year.
OR
- You spend 280 days (or more) in Ireland over the current and previous tax years combined. But you won’t be considered a resident if you stay 30 days or less in one of the two tax years.
Managing Taxes Between the US and Ireland
Navigating tax obligations as a US citizen living in Ireland can be complex. But there are ways to minimise your tax burden:
Double Taxation Treaty
The US and Ireland have a Double Taxation Treaty (DTA) in place under which US citizens can claim credits or deductions for taxes paid to Ireland when filing their US tax return. The DTA ensures that tax is only paid once on these earnings, regardless of which tax authority they are paid to.
Tax Credits or Exclusions
Certain tax credits and exclusions are also in place to reduce US tax liability on foreign-earned income (including money earned in Ireland). These are:
- Foreign Earned Income Exclusion (FEIE): Allows US expats to exclude a certain amount of Irish-earned income ($120,000+ for 2024) from US taxes once they meet Irish residency requirements. This exclusion doesn’t apply to income from self-employment or certain benefits like pensions.
- Foreign Tax Credit (FTC): Allows US expats to offset US taxes by claiming a credit for taxes paid in Ireland. The Foreign Tax Credit (FTC) can only reduce your US taxes up to the amount you’d owe on the same income in the US. So, if Ireland’s tax rate is higher than the US rate, you won’t get a refund for the extra taxes you paid in Ireland. However, you can save unused credits and apply them to future tax years.
You can choose between the FEIE and FTC or use both for different types of income.
FATCA and FBAR: What You Need to Know
The Foreign Account Tax Compliance Act (FATCA)
The Foreign Account Tax Compliance Act (FATCA) is a US federal law created to stop tax evasion by US taxpayers. US taxpayers with foreign financial assets above specific thresholds (e.g., $200,000 for single filers abroad) must file their tax return using IRS Form 8938 by April 15 to comply.
The penalty for failing to file Form 8938 or filing it late is $10,000. If you still don’t file after being notified by the IRS, you could face a fine of up to $50,000 and other penalties.
FBAR (Foreign Bank Account Report)
The FBAR requires US taxpayers to report foreign bank accounts to combat tax evasion. You’ll need to file an FBAR if the combined total of all your foreign accounts exceeds $10,000 at any point during the year.
FBAR uses FinCEN Form 114, which must be filed separately from your regular tax return. The deadline for filing is April 15, with an automatic extension to October 15.
Unlike FATCA, which the IRS manages, FBAR is managed by the Financial Crimes Enforcement Network (FinCEN).
Penalties for non-compliance with regulations include a fine of up to $10,000 per unintentional violation.
Intentional violations carry a harsher penalty of $100,000 or 50% of the account balance at the time of the breach.
Need help from a professional?
Filing a US Tax Return whilst living in Ireland can be difficult to do by yourself. Save yourself time, money, and energy by working with an expert who can guide you.
Request assistance from a Cross-border financial planner
Filing Your US Tax Return from Ireland
By now, you should have a better idea of whether or not you’ll need to file your US tax return while living in Ireland. If you do, here’s how.
How Do I File a US Tax Return?
You can file your US tax return by e-filing or paper filing, depending on your preferred method. Keep in mind that paper filing is a much slower process.
The essential forms you’ll need for filing your return are:
- Form 1040: The primary individual income tax return
- Form 2555: Used for claiming the Foreign Earned Income Exclusion
- Form 8938: Needed for reporting foreign financial assets under FATCA.
- FBAR (FinCEN Form 114): Essential for foreign bank accounts exceeding $10,000.
When filing, you must report income and taxes in US dollars. Don’t forget to keep records of all foreign income and taxes paid. This documentation is needed to claim tax credits or exclusions.
When Do I Need to File My Tax Return?
Although you must file your tax return by April 15, you automatically receive an extension until June 15 to give you extra time to get everything in order.
If you still aren’t ready, you can request a further extension to October 15.
However, interest charges will apply to taxes due on April 15.
Guide to Pensions and State Taxes
Here is a simple overview of your pension and state tax obligations while living in Ireland:
Are Pensions Taxed Differently?
Yes, US and Irish pensions are taxed differently.
Contributions to Irish pensions may not get the same tax benefits in the US as contributions to American retirement accounts.
At the same time, withdrawing from these pensions can lead to different tax treatment based on your residency status.
For more information on how this works, it’s helpful to consult a tax professional.
Will I Still Need to Pay State Taxes?
You might still need to pay state taxes even if you live abroad, as some states have rules for overseas residents.
These rules depend on your voting registration; whether you own property in the state and other ties, you might have to the state.
Irish Tax Obligations
Here’s an overview of your tax obligations as an Irish resident.
Income That Must Be Reported on an Irish Tax Return
- Local earnings: Salary or wages from your job in Ireland
- Foreign earnings: Income earned outside Ireland
- Rental income: Residential and commercial rental income
- Investment income: Dividends, interest from savings, and capital gains
- Pensions: Irish and overseas pensions
Deadlines for Filing Irish Taxes
The critical deadlines for filing taxes in Ireland are:
- Self-Assessed Tax Returns: October 31
- Online Filing Extension: You have until November 14 to submit your return through Revenue Online Service (ROS)
- Preliminary Tax Payments: October 31 (if filing online, you may have the opportunity for an extension)
Irish Tax Residency as a US Citizen
Remember, tax residency in Ireland is determined by how many days you spend in the country. Being a US citizen or green card holder doesn’t change these residency rules.
However, as a US citizen, you must report your global income to the IRS, regardless of where you live. It’s important to be aware of the reporting requirements so you don’t face penalties for non-compliance.
At the same time, your domicile (your permanent home) can impact your taxes.
While being a tax resident in Ireland mainly depends on how long you stay there, your domicile can change how some types of income — like capital gains and inheritance — are taxed.
Talk to a tax professional to ensure you’re following all tax rules in both countries.
Need help from a professional?
Filing a US Tax Return whilst living in Ireland can be difficult to do by yourself. Save yourself time, money, and energy by working with an expert who can guide you.
Request assistance from a Cross-border financial planner
Are There Tax Credits or Reliefs Available in Ireland for US Taxpayers?
Yes! Here’s a quick overview of each:
- Foreign Tax Credit: Offsets US tax liability with taxes paid to Ireland
- Double Taxation Agreement Relief: Reduced tax rates on certain income types taxed in different countries
- Tax Relief on Pensions drawdowns: Tax relief may be available on pensions for US expats living in Ireland
- Capital Gains Tax Relief: May apply to some US citizens e.g entreprenuer relief or retirement relief in Ireland
- Remittance basis of tax: Possibility for the remittance basis of tax for non-domiciled clients – meaning Irish tax on foreign income is payable only when the income is remitted to Ireland
Are US Social Security Benefits Taxable in Ireland?
Yes they are so you’ll need to report these benefits to the Irish tax authorities. It’s worth consulting with an Irish tax adviser to ensure you report this income correctly.
How Are Distributions from US Retirement Accounts like 401(k)s and IRAs Taxed in Ireland?
When you withdraw money from US retirement accounts like 401(k)s and IRAs while living in Ireland, you typically have to pay tax on those distributions. This can lead to double taxation, but the US-Ireland tax treaty can help reduce this tax burden. You might also qualify for other tax relief or credits based on your situation.
Closing Thoughts
Understanding your filing requirements is essential for avoiding penalties and fines as a US citizen or green card holder in Ireland.
You’ll need to file US tax returns and report your global income, regardless of your residency in Ireland. Consulting with a financial planner who is qualified and familiar with tax and investment requirements in both jurisdictions is worthwhile.
Familiarise yourself with key tax treaties and reliefs available to minimise double taxation — and keep more of your income.
DISCLAIMER: The material in this article is for general information purposes only and does not constitute legal or taxation advice. Specific legal, financial, investment and taxation advice should be sought before acting or refraining from acting. All information and taxation rules are subject to change without notice. Expats Taxes accept no liability whatsoever for any action taken based on the information in this article or any of the articles in our blog series. Expat Taxes Limited does not provide financial planning, investment, or mortgage advice, and this article is provided only for general information. We are not authorised/licensed to provide financial advice and this article should not be considered to constitute advice of this type in any respect.
Written by Stephanie Wickham, CTA, FCA
Known for her ability to simplify even the most complex tax matters, Stephanie has worked extensively across income tax, corporate taxes, capital gains, and inheritance taxes, with a deep understanding of cross-border tax implications and double tax treaties. Having experienced life as an expatriate herself, Stephanie understands the stress that can come with international moves — and how daunting tax compliance can feel. Her philosophy is simple: tax advice should be straightforward, clear, and tailored to each individual.
