US taxes and social security for Americans in Italy
Moving abroad does not end your relationship with the IRS. Facts verified ; orientation, not tax advice — cross-border tax is genuinely one of the places where paying a professional pays for itself, and this page is written to make you a better client, not to replace one.
The rule that does not bend
"If you are a U.S. citizen or resident alien, your worldwide income is generally subject to U.S. income tax, regardless of where you are living" — and the same filing requirements apply as if you had never left. This covers green-card holders too, via the green card test. Self-employment of $400 or more requires a return by itself.
The trap in the filing threshold: for deciding whether you must file, gross income includes the income you intend to exclude. So "the exclusion wipes out my tax, therefore I need not file" is wrong twice over — the exclusion only exists if you claim it on a return, and the threshold is measured before it.
Your American calendar, from Italy
- 15 April — the ordinary deadline. Interest runs from here no matter which extension you use.
- 15 June — automatic two-month extension if you live outside the US and your main place of business is outside the US. Unusually, this extends the time to file and pay; claim it by attaching a statement. Late-payment penalties run from this date rather than April.
- 15 October — file Form 4868 before 15 June, ticking the "out of the country" box. Time to file only, not to pay.
- 15 December — a discretionary further two months, requested by letter. You hear back only if refused.
A separate form, 2350, exists for a different problem: you need more time not to prepare the return but to qualify for the residence tests below.
Two ways not to pay twice — and you cannot use both on the same income
The foreign earned income exclusion (Form 2555) is $132,900 for 2026, indexed annually. It reaches earned income only: wages and self-employment for services. Pensions, Social Security, dividends, interest, rent and capital gains are all outside it. Qualifying needs a foreign tax home plus either bona fide residence for an uninterrupted period covering a whole calendar year, or physical presence for 330 full days in any twelve consecutive months.
The foreign tax credit (Form 1116) instead credits the Italian tax you actually paid, limited to the US tax on that foreign income, with unused credit carried back one year and forward ten. You may not claim the credit for foreign tax on income you chose to exclude — and doing it anyway can be treated as revoking the exclusion election, after which re-electing within five years needs an IRS ruling. Claiming the exclusion also disqualifies you from the additional child tax credit and the earned income credit for that year.
Two reports that have nothing to do with how much you owe
| Report | Threshold | Filed where | Due |
|---|---|---|---|
| FBAR — FinCEN Form 114 | $10,000 aggregate across all foreign accounts, at any moment in the year | FinCEN, not the IRS — filed through the BSA E-Filing System, never with your return | 15 April, automatic extension to 15 October (no request needed) |
| FATCA — Form 8938 | Living abroad: over $200,000 at year end or $300,000 at any time (single); $400,000 / $600,000 filing jointly | Attached to your income tax return | Return due date, including extensions |
They are different forms, filed with different agencies, and many Americans in Italy owe both. Two details catch people: the FBAR test is the aggregate maximum at any moment in the year, not the year-end balance — an account that peaked at €12,000 in July and emptied by December still counts. And whether the account earned anything is irrelevant.
What the treaty does — and what it does not
The US–Italy convention was signed in Washington on 25 August 1999 and entered into force 16 December 2009. It does not stop the US taxing you. Article 1(2) is a saving clause: each state may tax "its citizens by reason of citizenship — as if there were no convention." Article 4 has a residence tie-breaker (permanent home → centre of vital interests → habitual abode → nationality), but a US citizen cannot use it to escape the saving clause.
What the treaty actually provides is credit ordering: under Article 23(4) Italy credits up to the tax that would be due to the US if you were not a US citizen, the US then credits the Italian tax paid, and the income is re-sourced to Italy as far as needed to relieve the overlap.
On US Social Security, Article 18(2) says only the state of residence may tax it — but the saving clause's carve-out is written for residents of Italy who are Italian nationals. The Technical Explanation spells out the clean "only Italy taxes it" result for a dual US/Italian national. For a US-citizen-only retiree in Italy we found no official source stating the end result, so this page does not assert one: the mechanism is Article 23(4), and the answer is a question for a cross-border adviser rather than a web page.
Social security contributions: Italy is the odd one out
Most US totalization agreements use a detached-worker rule. The Italian one, in force since 1978, has none. Coverage turns instead on nationality: a US citizen working or self-employed in Italy who would be covered by US Social Security absent the agreement stays in the US system and is exempt from Italian contributions. The widely repeated "five-year detached worker" limit belongs to other countries' agreements, not this one.
Exemption is not automatic — you must hold a certificate of coverage (from SSA on the US side; in Italy, form IT/USA 4 from the provincial INPS office). The self-employed must attach a copy of the foreign certificate to the US return every year. Neither you nor an employer may simply choose a system; SSA calls that a general misconception.
Your benefit cheque, and the health cover that does not travel
Social Security benefits continue to be paid to US citizens living in Italy. Non-citizens generally stop after six calendar months abroad, but Italy is on SSA's continuation list; a non-citizen leaving for 30 days or more files form SSA-21. Up to 85% of the benefit remains taxable for citizens and green-card holders.
Medicare, however, essentially stops at the border. It "won't pay for health care or supplies you get outside the U.S." except in three narrow situations, all of which assume you are in or living in the US, and it never covers prescriptions bought abroad. Americans also have no S1 form — the route by which an EU pensioner exports their home country's cover to the Italian SSN. Budget for voluntary SSN enrolment or private insurance, and treat this as a pre-departure decision rather than an afterthought.
And then Italy taxes you too
Once you are Italian tax-resident, Italy taxes all income possessed wherever produced. Residence is not the "183 days" the internet repeats: the statute says the greater part of the tax period, expressly counting part-days since 2024, and is met by civil-law residence, by domicilio (defined as where your personal and family relations principally develop), or by mere presence. Registration at the anagrafe creates a rebuttable presumption, not an independent test — and deregistering does not by itself end residence.
Italy offers three elective regimes a US citizen should price carefully.
- Neo-residenti: a flat substitute tax of €300,000 a year on foreign income, plus €50,000 per family member, requiring an advance ruling.
- Impatriati: 50% of Italian employment income taxed, up to €600,000.
- The 7% regime for foreign pensions, in southern comuni under a population ceiling — see the note below, which has just moved.
Two warnings. The Revenue Agency's own English pages still show the neo-residenti figure as €100,000 — stale; the statute in force says €300,000. And whether Italy's flat substitute taxes are creditable against US tax is exactly the kind of question this page will not guess at.
Coming on 1 January 2027: Italy renumbers its tax code
D.lgs 19 giugno 2026, n. 117 approves a new consolidated income tax code and repeals articles 1 to 191 of the TUIR from 1 January 2027. The residence and worldwide-taxation wording carries over unchanged, but every article number a guide cites will move — art. 2 stays art. 2, while the new-residents regime moves from art. 24-bis to art. 246. Expect a wave of stale citations across the web from January.
One divergence is now confirmed rather than suspected, and it is worth money. The 7% pensioners' regime is open only in a comune under a population ceiling. TUIR art. 24-ter has read 30,000 since 7 April 2026. The consolidated text — approved on 19 June and published on 3 July, both after that date — reproduces the article as art. 247 carrying the pre-amendment 20,000.
So unless a corrective decree intervenes, the ceiling falls back to 20,000 on 1 January 2027, and comuni between the two figures stop qualifying. Read both texts before counting on one: art. 24-ter is on Normattiva, art. 247 only in the Gazzetta annex (Supplemento ordinario n. 26/L to GU n. 152 of 3 July 2026, p. 210) — Normattiva publishes the approving decree, not the code annexed to it.
Sources
Primary, official sources this page is based on — each fetched and checked on 3 August 2026, except the Gazzetta annex, added and checked on 9 August 2026.
- IRS — Publication 54, Tax Guide for U.S. Citizens and Resident Aliens Abroad (rev. Dec 2025)
- IRS — U.S. citizens and resident aliens abroad (filing duty, extensions)
- IRS — Revenue Procedure 2025-32, §3.39 (2026 foreign earned income exclusion: $132,900)
- IRS — Instructions for Form 2555 (bona fide residence, 330-day physical presence, housing)
- IRS — Instructions for Form 1116 (foreign tax credit, limitation, carryover)
- FinCEN — Report Foreign Bank and Financial Accounts (FBAR, $10,000 aggregate)
- IRS — Report of Foreign Bank and Financial Accounts (FBAR) deadlines and filing channel
- IRS — Comparison of Form 8938 and FBAR requirements
- IRS — Instructions for Form 8938 (thresholds for taxpayers living abroad)
- US Treasury — US–Italy income tax Convention and Protocol (signed 25 August 1999)
- US Treasury — Technical Explanation of the US–Italy Convention
- MEF / Dipartimento delle Finanze — conventions in force (US: in vigore dal 16.12.2009)
- SSA — U.S. International Social Security Agreements (Italy has no detached-worker rule)
- SSA — Totalization Agreement with Italy (nationality-based coverage, certificate of coverage)
- SSA — Publication 05-10137, Your Payments While You Are Outside the United States
- Medicare.gov — Travel outside the U.S.
- Normattiva — TUIR (DPR 917/1986), artt. 2 e 3 (residence; worldwide taxation of residents)
- Normattiva — TUIR art. 24-bis (neo-residenti: €300,000 substitute tax, in force from 1-1-2026)
- Normattiva — D.lgs 19 giugno 2026, n. 117 (approving decree; the code itself is the annex, not on Normattiva)
- Gazzetta Ufficiale — Supplemento ordinario n. 26/L to GU n. 152 of 3 July 2026: the annexed consolidated code (art. 246 neo-residenti, art. 247 pensioners at 20,000)
- Normattiva — TUIR art. 24-ter (7% pensioners regime; population ceiling 30,000 since 7 April 2026)