Should a US citizen take the Italian 300,000 euro flat tax?

Only after modelling it on both returns. The US-Italy treaty saving clause preserves full US taxation of citizens, and whether a fixed substitute tax is creditable in the US is contested. The regime can produce double cost rather than savings.

Can I keep my US brokerage account after moving to Italy?

Usually yes, and it is often preferable to European funds, which the IRS treats as PFICs with punitive taxation and reporting. Some brokers restrict non-resident accounts, so check before moving.

What reporting do Americans in Italy face?

Both sets. In Italy the RW section plus IVIE and IVAFE. In the United States FBAR, Form 8938, Form 8621 for PFICs, and reporting for foreign companies and trusts.

Do you work with US accountants?

Yes. Andrea Matera handles the Italian side and coordinates directly with your CPA or EA in English.

You can leave the United States. You cannot leave the IRS.

Q: Does the Foreign Earned Income Exclusion solve double taxation for Americans in Italy?

Only partially. It covers earned income up to an annual limit and does nothing for investment income, capital gains or pensions.

For Americans, moving to Italy is not a change of tax system but the addition of a second one. The planning question is how the two interact — and where they collide.

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Citizenship follows you

Almost every country taxes people who live there. The United States taxes people who are American, wherever they live. Moving to Italy does not switch that off, does not pause it, and does not reduce the filing obligation.

So the American arriving in Italy is not choosing between two tax systems. They are living inside both, simultaneously, for as long as they hold the passport. Everything then depends on how the two interlock: which country has the first claim on each type of income, what credit the other gives for it, and where the machinery simply fails to mesh.

The Italy-US double tax treaty manages much of this. But it contains a saving clause which expressly preserves the right of the United States to tax its own citizens as if the treaty did not exist. Most treaty benefits you might expect to shelter you, as an American, are switched off by that single provision.

The trap: why the flat tax can cost Americans twice

This is the point on which I most often see Americans given confident, wrong advice.

The neo-resident regime under art. 24-bis replaces Italian tax on all foreign income with a fixed 300,000 euro a year. For a wealthy European arriving from London or Frankfurt, that can be transformative. For a US citizen it can be the worst of both worlds, and here is why.

Because of the saving clause, the United States continues to tax your worldwide income in full.
Relief from double taxation then depends on the foreign tax credit — and whether a fixed substitute tax, unrelated to the amount of income and not levied on a specific income item, is creditable under US domestic rules is a genuinely contested question, not a settled one.
Sourcing, income category and the credit limitation all still have to be satisfied item by item. The assumption that "Italy charges 300,000 so the IRS credits 300,000" is not a plan.

An American can end up paying 300,000 euro in Italy and close to full US tax on the same income, with little or no relief between them.

That does not make the regime unusable for Americans. It makes it a decision that must be modelled on both returns before the residence is moved, not after.

What tends to work better

The impatriati regime, where the income is Italian-source employment or professional income. A 50% exemption (60% with a minor child) up to 600,000 euro of eligible income, for five years — and because it reduces Italian tax on income the US also taxes, the credit mechanics are far more conventional.
Treaty analysis article by article, rather than in the abstract: pensions, dividends, capital gains, real property and government service each behave differently, and the saving clause has exceptions worth knowing.
Foreign tax credit planning across baskets and years, including the timing of income recognition on either side of the move.
Avoiding the PFIC problem before it starts. European mutual funds and ETFs — the ordinary product an Italian bank will offer you — are treated as Passive Foreign Investment Companies by the IRS, with a punitive regime and heavy reporting. This is the single most common self-inflicted wound among Americans in Italy.

Reporting: two sets of forms, no overlap

Each country wants its own disclosure, on its own schedule, in its own format. Neither accepts the other.

Italy: the RW section for foreign assets, plus IVIE on foreign property and IVAFE on foreign financial assets.
United States: FBAR for foreign accounts, Form 8938 under FATCA, Form 8621 for each PFIC holding, plus the reporting attached to any foreign company, trust or partnership.

The penalties on both sides are assessed per form and per year, and they are not proportionate to the tax involved. This is where an American in Italy most often gets hurt — not on rates, on paperwork.

I hold both sides of the file: Italian compliance and direct coordination with your US CPA, in English.

Questions American clients ask

Should I take the 300,000 euro flat tax as a US citizen?

Only after modelling it on both returns. Because the treaty saving clause preserves full US taxation and the creditability of a fixed substitute tax is contested, the regime can produce double cost rather than savings. It is a case-by-case calculation, never a default.

Does the Foreign Earned Income Exclusion solve this?

Only partially. It applies to earned income, up to an annual limit, and does nothing for investment income, capital gains or pensions. For most people relocating with meaningful assets it is a small part of the answer.

Can I keep my US brokerage account?

Usually yes, and it is often preferable to buying European funds, which trigger PFIC treatment. Some US brokers restrict accounts for non-resident holders, so this is checked before you move rather than after.

What about renouncing citizenship?

It is a serious step with its own exit tax regime and consequences well beyond tax. It is not a planning shortcut and I would not present it as one.

Do you work with my US accountant?

Yes. I handle the Italian side and coordinate directly with your CPA or EA in English, so the two returns are built consistently rather than in isolation.

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