What the flat tax regime actually is
Article 24-bis of the Italian Tax Code (Testo Unico Imposte sui Redditi, TUIR) — introduced in 2017 and known informally as the regime dei neo-residenti or simply "il forfettario per ricchi" — lets newly-arrived Italian tax residents pay a fixed €100,000 per year on all foreign-source income, regardless of how much that income actually is. Italian-source income is taxed under ordinary rules.
It was designed explicitly to compete with the UK's old "non-dom" regime, with Portugal's NHR, and with Switzerland's lump-sum taxation. The intent is to attract high-net-worth individuals to Italian residency — and on the income side, it works very, very well.
I've spoken with dozens of Americans who moved to Italy under the €100,000 flat tax scheme since it launched in 2017. The pattern I see most: people focus entirely on the tax savings and don't factor in the Italian wealth reporting requirements (the RW form) and the IVIE/IVAFE levies on foreign assets. The flat tax doesn't eliminate those. A commercialista fluent in both US and Italian tax law is non-negotiable here — not optional.
The Italian flat tax regime can produce severe double-taxation effects for US citizens if structured naively. The IRS does not recognize the flat tax as a tax on the underlying income — meaning Foreign Tax Credit treatment is limited. Anyone considering this regime as a US citizen must engage both an Italian commercialista and a US international tax CPA before signing the election.
Who qualifies
To elect the regime, you must:
- Become an Italian tax resident under Article 2 of TUIR (typically: 183+ days in Italy, OR center of vital interests in Italy, OR registered in the anagrafe).
- Have not been an Italian tax resident in 9 of the 10 years preceding your move.
- File the election with your first ordinary Italian tax return (Modello Redditi PF) after becoming resident.
The "9 of 10" rule is strict. A single year of Italian residency in the past decade can disqualify you — including residency by AIRE de-registration triggers. If you are uncertain about your historical Italian residency status, request a Certificato di Residenza Storica from your former comune before applying.
The math: when does the flat tax actually help?
The break-even depends on the type of foreign income and your alternative Italian tax. As a rough rule:
| Foreign income (annual) | Ordinary IRPEF (approx.) | Flat tax | Savings vs flat |
|---|---|---|---|
| €200,000 | ~€78,000 | €100,000 | Negative — don't elect |
| €300,000 | ~€120,000 | €100,000 | €20,000 |
| €500,000 | ~€205,000 | €100,000 | €105,000 |
| €1,000,000 | ~€420,000 | €100,000 | €320,000 |
| €2,000,000 | ~€850,000 | €100,000 | €750,000 |
The regime begins to pay for itself somewhere around €240,000–€280,000 of foreign-source income per year. Below that, ordinary IRPEF tends to produce a similar or lower tax bill, and you preserve more flexibility.
For Americans with substantial portfolios — annual investment income above €500,000 — the savings can run into the hundreds of thousands per year, every year, for fifteen years. That is, in raw Italian-tax-savings terms, a life-changing opportunity.
The IRS interaction (the part nobody warns you about)
Here is the issue that destroys many flat-tax elections for American citizens:
Under US tax rules, you may claim a Foreign Tax Credit (FTC) for foreign income tax actually paid. The IRS analyzes the flat tax as a substitute tax — not a tax on income — and Tax Court precedent suggests it is not generally creditable against US tax on the same income.
If you pay €100,000 to Italy under the flat tax, you cannot generally use that €100,000 to offset US federal tax on the same foreign income. You may end up paying €100,000 to Italy plus full US federal tax. For most Americans this is the deal-breaker.
The narrow path that works
The flat tax can still make sense for US citizens in narrow situations:
- The foreign income is not US-sourced and is also not subject to US tax through the saving clause (rare for most asset types).
- The taxpayer renounces US citizenship before electing — a major step, and one with its own expatriation tax consequences.
- The income consists predominantly of foreign earned income that qualifies for the FEIE — but the FEIE is capped (~$130,000 in 2025) and the flat tax math doesn't begin to make sense below €240k.
- The taxpayer has a domicile structure that makes them resident-but-not-domiciled under treaty — extremely unusual for Americans.
For US citizens with truly enormous foreign income — eight-figure portfolios producing eight-figure annual yields — even paying full US tax plus €100k to Italy may be cheaper than paying ordinary IRPEF on the lot. This is the population for whom the regime really exists. It is a small population.
Adding family members
The regime allows you to add family members at €25,000 per person per year. Eligible family members include:
- Spouse
- Registered civil partner (unione civile)
- Children (any age, including adult, with limits)
- Parents (in some cases, with certain conditions)
- Siblings (with certain conditions)
Each family member added must themselves meet the 9-of-10 non-residency requirement. A couple electing the regime together therefore pays €125,000 per year combined — €100,000 for the principal, €25,000 for the spouse.
How to apply
Step 1 — Become an Italian tax resident
This typically means moving to Italy, registering at the anagrafe of your comune, and crossing the 183-day threshold in a calendar year. The flat tax election cannot be made before you become a tax resident.
Step 2 — File the election
The election is made on the ordinary Italian tax return (Modello Redditi PF) for the year in which you became tax resident. The first return is filed in the year following the first year of residency — so a person who becomes resident in 2025 files (and elects) in mid-2026.
Step 3 — Optional ruling request
You may request an advance ruling (interpello) from the Agenzia delle Entrate confirming your eligibility. This is highly recommended for Americans. The ruling provides legal certainty but is not strictly required.
Step 4 — Annual maintenance
Each year you remain in the regime, you reaffirm the election on that year's tax return and pay the €100,000 by June 30. Italian-source income is reported and taxed separately under ordinary IRPEF.
Duration and exit
The regime lasts for a maximum of 15 consecutive tax years. You may exit voluntarily at any time. You may not return — once you exit, the regime is closed to you permanently.
If you cease to be Italian-tax-resident before the 15 years are up, the regime ends automatically and prior years remain valid.
Alternatives worth considering
- Impatriati regime — A 50% reduction in taxable Italian-source income for new residents who work in Italy. Excellent for high earners with active income.
- Southern Italy 7% pension regime — Move to a town under 20,000 in the South and pay 7% on foreign pension income for 9 years. Far better than the flat tax for most retirees.
- Ordinary IRPEF with FTC — For Americans, ordinary Italian taxation paired with US FTC often produces the best after-tax outcome, despite higher headline rates.
- Forfettario (small business) — 15% flat rate on Italian self-employment income up to €85,000.
Red flags — situations where the flat tax fails
- You are a US citizen with substantial US-source income (treaty saving clause).
- Your foreign income is below ~€250,000.
- You expect to sell US property within 10 years (capital gains complications).
- You hold significant retirement accounts (401k, IRA) — Italian treatment of distributions interacts oddly with the regime.
- You have not yet engaged dual US/Italian tax counsel.
The flat tax regime is one of the most generous tax provisions in Europe — but it is also one of the most easily misapplied. For Americans, the difference between a well-structured election and a naive one can run to seven figures over fifteen years. Get the right professionals on it before you sign.