Americans who move to Greece for retirement, a remote job, or family ties quickly discover that two governments are tracking their income: the AADE in Athens and the IRS back home. What sets Greece apart from most of Europe is the treaty meant to keep those two governments from taxing the same dollar twice: the US-Greece income tax agreement was signed in 1950, patched once by a 1953 protocol, and never revisited since, leaving it far too old to carry the weight a modern treaty would. Because Greece taxes its residents on worldwide income and the United States taxes its citizens and green card holders no matter where they live, an American living in Greece typically owes a filing obligation in both countries every year. With a treaty this narrow, the real planning work falls almost entirely to the Foreign Tax Credit and the Foreign Earned Income Exclusion rather than to any treaty article.
Do US Citizens Living in Greece Have to File Both Greek and US Tax Returns?
Yes, in almost every case. Greece taxes individuals who qualify as tax residents, generally based on where they spend their time or where their vital interests are centered, on their worldwide income through the AADE, the Independent Authority for Public Revenue. The United States separately taxes its citizens and green card holders on worldwide income no matter where they live, a rule tied to US citizenship or immigration status rather than Greek residency.
That means the two filing obligations run independently, and having an old treaty in place does not change that baseline requirement the way people sometimes assume. Filing and paying tax in Greece does not excuse you from filing a US Form 1040, and filing a US return does not excuse you from your Greek obligations. The Foreign Earned Income Exclusion and the Foreign Tax Credit carry most of the double-tax planning burden on the US side, because the treaty is too narrow to do much of that work on its own.
How Does Greece Tax Residents on Worldwide Income?
Greece applies its individual income tax on a worldwide basis to anyone who qualifies as a tax resident, using progressive rates that apply as income rises, and that is the starting point for figuring out what an American in Greece actually owes there before turning to the US return. Employers generally withhold tax from Greek payroll throughout the year, similar to US wage withholding.
Greece also offers special incentive regimes aimed at attracting new tax residents, including a reduced flat-tax regime for foreign pensioners and retirees who transfer their tax residence to Greece, and a separate non-dom lump-sum regime for individuals who invest in the country. These programs can materially change a retiree's or investor's Greek tax picture, but eligibility rules, application deadlines, and the interaction with your US filing are specific enough that you should confirm current eligibility and rules before assuming either one applies to your situation. The current-year Greek rates should always be confirmed as well, since a stale figure can throw off both the Greek calculation and the US Foreign Tax Credit that depends on it.
Should You Claim the FEIE or the Foreign Tax Credit on Greek Income?
For Americans earning income in Greece, the choice between the Foreign Tax Credit and the Foreign Earned Income Exclusion has to be made on the numbers each year, since the treaty offers little guidance to lean on the way modern treaties sometimes do. A year-by-year comparison is worth doing rather than defaulting to one election out of habit.
The Foreign Tax Credit on Form 1116 credits Greek income tax paid, computed by category under IRC Sections 901 and 904, dollar for dollar against US tax, and unused credit carries back one year and forward ten years on Schedule B. The Foreign Earned Income Exclusion on Form 2555 instead excludes foreign earned income up to an annually indexed maximum, for example $130,000 for 2025, under IRC Section 911. The FEIE does nothing for self-employment tax, which matters more in Greece than in a country with a totalization agreement, can disqualify the refundable Additional Child Tax Credit for a family with kids, and once revoked generally cannot be re-elected for five years without IRS consent, so the Foreign Tax Credit is often the more durable choice for a working expat in Greece. Our FEIE versus Foreign Tax Credit comparison walks through the decision in more detail.
What Does the US-Greece Tax Treaty Do for Double Taxation?
Less than most Americans assume, because the treaty is old. The United States and Greece signed their income tax treaty in 1950, updated it with a protocol in 1953, and have never renegotiated it since, which makes it one of the oldest US tax treaties still in force. That vintage matters in practice: the treaty is narrow and predates the comprehensive modern articles that current treaties routinely include, such as a modern pension article, clear tie-breaker residency rules for someone who could be considered a resident of both countries, and the modern saving-clause structure that defines exactly how far the United States can still tax its own citizens under the treaty.
For an American in Greece, the practical takeaway is not to assume the treaty behaves like a modern one. It cannot be relied on for the kind of pension deferral or residency tie-breaker planning that treaties with countries like Germany or the United Kingdom provide. In practice, most double-tax relief for a US person in Greece comes from domestic law, the Foreign Tax Credit under IRC Sections 901 and 904 and the Foreign Earned Income Exclusion under IRC Section 911, rather than from the treaty text itself, and any position that depends on a specific treaty article should be checked carefully against the actual 1950 and 1953 language before you rely on it.
Does a US-Greece Totalization Agreement Cover Social Security?
No. The United States and Greece have never entered into a totalization agreement, unlike the arrangements the US has with many other European countries. Without one, there is no certificate of coverage process available to exempt a worker's earnings from one of the two social security systems.
The practical effect falls hardest on self-employed Americans in Greece, who can end up owing full US self-employment tax on their net earnings with no Greek offset and no way to obtain the coverage certificate that would apply in a totalization country. Anyone weighing whether to structure Greek work as employment or self-employment should factor this gap in directly; our guide to totalization agreements and self-employment tax abroad explains how the certificate process works in countries that do have an agreement, and by contrast why Greece offers no such relief.
How Are Greek Pensions and Retirement Accounts Taxed by the US?
Not automatically, and Greece is a harder case than most because its treaty predates the pension articles that make this question easier to answer in other countries. Under the default of IRC Sections 401(a) and 402(b), a US person generally owes tax each year on income that accumulates inside a foreign retirement plan, and only a specific treaty provision can defer it.
Because the 1950 treaty and its 1953 protocol were written before modern pension articles became standard, a Greek pension or retirement account cannot be assumed to receive the kind of treaty-based deferral that a comparable German or UK plan might. Each Greek retirement vehicle has to be analyzed on its own facts rather than assumed to be covered. Our foreign pension US tax treatment guide walks through the four questions that determine the answer for any foreign plan: whether growth is taxed as it accrues, whether a treaty defers it, what has to be reported, and how distributions are taxed.
Are Greek Investment Funds Taxed as PFICs?
Usually, yes, and it is a costly surprise for anyone who assumes a Greek brokerage account works the same way a US one does. IRC Section 1297 defines passive foreign investment company status, with Sections 1291 and 1298 setting the actual tax mechanics, and a typical Greek mutual fund or pooled vehicle lands inside that definition regardless of how the AADE taxes it locally. Nothing about the 1950 treaty changes this outcome: PFIC classification runs entirely off the Internal Revenue Code, not treaty text.
Left unaddressed, PFIC status turns into one of the harsher outcomes in the US tax code: without a timely election, gains and certain distributions get spread across your entire holding period, taxed year by year at the top rate then in effect, and layered with an interest charge for the deferral. Each PFIC generally requires its own Form 8621 filing, even in a year where no tax is actually due, which is why Americans in Greece are usually steered toward US-domiciled brokerage accounts and US-based index funds rather than a local mutual fund through a Greek bank.
What Else Do You Have to Report to the IRS?
The income tax return is not the end of it. Greek bank, brokerage, and pension-related accounts trigger their own separate reporting rules that apply no matter what the treaty says and no matter that Greece and the US have no totalization agreement to lean on, and those filings carry penalty exposure that dwarfs the underlying tax in most cases.
The Greece Reporting Stack
Reference- FBAR (FinCEN Form 114). Required when the combined balance of your Greek bank, brokerage, and pension-related accounts exceeds $10,000 at any point during the year. See our FBAR filing guide.
- Form 8938 (FATCA, IRC §6038D). A separate filing threshold, higher for Americans living abroad, that can require you to list the same Greek accounts directly on your federal tax return. See our Form 8938 guide.
- Form 8621 (PFIC). Generally required for each Greek mutual fund or other pooled fund that qualifies as a passive foreign investment company. See our PFIC and Form 8621 guide.
That still leaves open whether you count as a US tax resident in the first place, a separate question for anyone whose situation is not simple citizenship, such as a long visit that turned into a permanent move to Greece; the answer runs through the substantial presence test.
Bottom Line
Greece is not a place to file on autopilot, because the treaty your return would normally lean on has not been touched since the 1953 protocol, and it was already narrow back in 1950. The AADE and the IRS operate independently, the Foreign Tax Credit and the Foreign Earned Income Exclusion have to do most of the double-tax work on their own, and the missing totalization agreement leaves self-employed Americans exposed to full US self-employment tax. Pensions, Greek investment funds, and foreign accounts each carry their own reporting rules on top of the income tax analysis, and getting any one of them wrong tends to cost more in penalties than the underlying tax ever would have: the bottom line for Greece is that the 1950 treaty does almost nothing for you, so your planning has to rest on the Foreign Tax Credit and the Foreign Earned Income Exclusion instead.
Have questions about US expat taxes in Greece? Contact TS CPA for a free consultation. We respond within the same day.
Official IRS and Government Sources
- IRS, United States Greece Tax Treaty Documents
- IRS, United States Income Tax Treaties A to Z
- IRS, Foreign Earned Income Exclusion
- IRS, Foreign Tax Credit
- Social Security Administration, Totalization Agreements Overview
- FinCEN, Report of Foreign Bank and Financial Accounts (FBAR)
- IRS, About Form 8621
- IRC Section 911, Citizens or Residents Living Abroad