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US estate tax: the Italian resident's case

What the Italy–US treaty changes, in practice, for an Italian resident holding US-listed ETFs.

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A 1955 treaty, of another generation

Italy and the United States are bound by an estate-tax treaty of 30 March 1955 — a so-called “situs” treaty, of a generation earlier than the domicile treaties. The difference is not cosmetic: a situs treaty does not remove any asset from US scope. It sets common rules to say WHERE each asset is located, organises a credit between the two States, and imposes a minimum exemption on each. The protection exists, but it works through arithmetic, not through attribution.

The fate of ETFs: they stay within US scope

This is the point that sets Italy apart from the countries seen so far in this series. Where the French, German, British, Dutch or Austrian treaties attribute securities to the State of domicile — and therefore remove them from estate tax — the 1955 treaty reasons by the situation of the assets: shares are deemed located where the company that issued them is incorporated. A US share or ETF held by an Italian resident therefore remains a US-situs asset, within the scope of estate tax, exactly as under ordinary law. Everything then rests on the numerical protection of the next section — which, in practice, changes everything.

Dual connections

US citizens domiciled in Italy, dual nationals and estates connected to both States are governed by their own rules — the 1955 treaty handles these situations with the tools of its era, less refined than modern tie-breakers. For them, this page is not enough.

The protection: the proportionate exemption

The treaty's central clause requires the State that taxes by situs to grant the exemption it would have granted had the deceased been domiciled there — prorated by the share of assets it actually taxes within what it would have taxed in the case of domicile. Applied to today's United States: an Italian resident's estate is entitled to a fraction of the $15 million federal allowance, proportional to the weight of its US sleeve within its worldwide estate. The treaty also bars taking foreign assets into account when setting the rate.

The arithmetic is the same as that of the prorated Franco-German credit — applied this time to the ETFs themselves, since they sit within the tax base. An example: an Italian resident leaves a worldwide estate of $4M, of which $800,000 is US ETFs. Their effective exemption is $15M × (0.8 / 4) = $3M — well above the taxable sleeve: no tax. And the general rule holds, identical: as long as the worldwide estate stays below the federal allowance, the proportionate exemption always covers the US sleeve. The difference with modern treaties is therefore not today's numerical result — it is the structure: here, the protection depends on the level of the US allowance, which Congress can lower; there, it rests on an attribution that only a renegotiation could undo.

The surviving spouse

The 1955 treaty contains no treaty-based marital deduction on the US side — that mechanism belongs to later generations. Transfers between spouses involving the US sleeve benefit from the proportionate exemption like everything else, then from the ordinary law for non-residents, markedly less favourable than that for citizens. Couples whose US sleeve is significant relative to their worldwide estate have a genuine structuring issue there.

The procedure, always

A proportionate exemption does not mean the absence of a filing — quite the opposite: to claim it, the estate files Form 706-NA, asserts the benefit of the treaty, and must DOCUMENT the worldwide estate (it is what sets the proration). The broker freeze until the transfer certificate, the months-long delays, the heirs' survival liquidity to be planned outside US accounts: everything described on the general page applies — with a heavier file than in the attribution countries, since the worldwide inventory is part of the demonstration.

The Italian side

Italy taxes a resident's estate on its worldwide assets — US ETFs included — but its imposta di successione is one of the gentlest in Europe: 4% for the spouse and direct descendants above a €1 million allowance per beneficiary, more for other relationships. The treaty coordinates the two taxes by credit. For many Italian families, the effective Italian tax on an ETF sleeve is low or nil — which makes it all the more visible that the core of the US issue is procedural.

Design responses

For the Italian resident, today's practical outcome closely resembles that of the “modern” countries: no US tax as long as the worldwide estate stays below the federal allowance, full procedural friction. But two design nuances are added. First, the protection is ARITHMETIC, not structural: it follows the level of the US allowance — a political parameter. Second, the 706-NA file is more demanding (worldwide inventory to document). The UCITS substitution therefore gains here an argument the attribution countries do not give it: it not only removes the procedure, it structurally removes from the tax base an asset that, by treaty, remains in it. A prepared file, heirs' liquidity outside US accounts, and — for estates close to the allowance or with dominant US sleeves — a genuine UCITS discussion with a professional.