United States ↔ Italy · Estate & Succession
Estate and inheritance tax across two systems.
How the 1955 treaty coordinates domicile, asset situs and double-tax relief in 2026.
Yes. The 1955 U.S.–Italy estate tax treaty still applies in 2026. It does not make a cross-border inheritance tax-free. It coordinates two different systems by using domicile and asset-situs rules and by allowing relief from double taxation. The actual result depends on the decedent’s citizenship and estate-tax domicile, Italian residence, the location and legal form of each asset, and the relationship between the decedent and each beneficiary.
Decision first: which country can tax the estate?
A U.S.–Italy succession should never begin with the beneficiary’s passport or with the question “where is the will?” The tax analysis starts with the decedent and then moves asset by asset.
| Question | United States | Italy | Why it matters |
|---|---|---|---|
| Was the decedent a U.S. citizen? | Worldwide estate may be within the U.S. estate-tax base. | Citizenship alone is not the Italian scope test. | A U.S. citizen living permanently in Italy can remain exposed to both systems. |
| Where was the decedent domiciled? | Estate-tax residence is based on domicile, not the income-tax green-card or substantial-presence tests. | The treaty uses domicile to coordinate taxing rights. | Intent and facts can matter more than the address on a return. |
| Was the decedent resident in Italy? | Not determinative by itself. | Article 2 of Legislative Decree 346/1990 generally taxes worldwide transfers if the decedent was Italian-resident; otherwise it generally reaches Italian-situs assets. | This determines the territorial reach of Italian inheritance tax. |
| Where is each asset situated? | Critical for a nonresident noncitizen. | Critical when the decedent was not Italian-resident. | Real estate, shares, bank deposits, partnership or LLC interests and insurance do not all follow the same rule. |
Does the U.S.–Italy estate tax treaty of 1955 still apply?
Yes. Current IRS instructions list Italy among the countries with a death-tax treaty in force. The convention was signed in 1955 and remains the bilateral instrument for coordinating U.S. federal estate tax and Italian succession tax.
The treaty is not the U.S.–Italy income tax treaty. It does not govern salary, pensions or investment income, and it does not automatically eliminate estate tax. Its practical functions are to coordinate domicile and situs, allocate primary taxing jurisdiction for categories of property, and provide a credit mechanism where both countries tax the same transfer.
A treaty-based position may require a disclosure statement with Form 706 or Form 706-NA under Treasury Regulation §301.6114-1. The treaty therefore belongs inside the return analysis, not as a sentence added after two domestic calculations have already been completed.
How Italian inheritance tax applies
Italy taxes the transfer, but the rate and exemption are determined separately for each beneficiary. Under Article 2 of the Italian Inheritance and Gift Tax Code (Legislative Decree 346/1990), the estate of an Italian-resident decedent is generally exposed on worldwide assets. If the decedent was not resident in Italy, the Italian charge is generally limited to assets situated in Italy.
| Beneficiary | Rate | Exemption |
|---|---|---|
| Spouse and direct descendants or ascendants | 4% | €1,000,000 per beneficiary |
| Siblings | 6% | €100,000 per beneficiary |
| Other relatives up to the fourth degree and specified in-laws | 6% | No general exemption |
| Other beneficiaries | 8% | No general exemption |
| Qualifying beneficiary with a severe disability | Applicable relationship rate | €1,500,000 |
Italian real estate can also trigger mortgage and cadastral taxes. Those charges must be modelled separately from inheritance tax. The declaration, valuation and payment process also should not be confused with the civil-law question of which succession law governs the estate.
How U.S. estate tax applies
A U.S. citizen is potentially subject to federal estate tax on worldwide property even after moving to Italy. A noncitizen domiciled in the United States is also generally within the worldwide estate-tax system. For deaths in 2026, the federal basic exclusion amount is $15,000,000, subject to prior taxable gifts and other adjustments.
A decedent who was neither a U.S. citizen nor U.S.-domiciled generally files Form 706-NA when U.S.-situated gross assets exceed $60,000. That low filing threshold is not a statement of the final tax: treaty relief, deductions and credits can change the result, but they must be claimed correctly.
| Decedent profile | Potential U.S. tax base | Primary return |
|---|---|---|
| U.S. citizen living in Italy | Worldwide estate | Form 706 if filing threshold or an election applies |
| Noncitizen domiciled in the United States | Worldwide estate | Form 706 |
| Italian citizen domiciled in Italy, not a U.S. person | Generally U.S.-situs assets | Form 706-NA if applicable |
Asset situs: the classification that changes the answer
Cross-border estates fail when the balance sheet is classified only by custodian. An account held at an Italian bank can contain U.S. corporate stock; a U.S. brokerage can contain non-U.S. securities. Legal ownership and the treaty situs rule must be tested asset by asset.
| Asset | Typical issue | Planning question |
|---|---|---|
| U.S. real estate | Generally strong U.S.-situs exposure; Italian tax may also apply to an Italian-resident decedent. | Direct ownership, debt, entity classification and treaty credit. |
| Shares of a U.S. corporation | Can be U.S.-situs for an Italian-domiciled noncitizen even if held abroad. | Is the issuer U.S. or foreign, and does the treaty alter the domestic result? |
| Bank and brokerage cash | Deposit and custody labels are not enough; domestic exclusions and treaty rules differ by asset. | What is the legal instrument, debtor and location? |
| Italian real estate | Italian-situs and potentially included in the worldwide U.S. estate of a U.S. citizen. | Valuation, Italian taxes and foreign death-tax credit. |
| LLC or partnership interest | Entity classification and situs can be fact-sensitive. | What does the decedent own: property, shares or a partnership interest? |
| Life insurance, pensions and retirement accounts | Estate inclusion, beneficiary designation and income tax after death follow different rules. | Who owns the contract, who is insured, and who receives the proceeds? |
How double taxation relief works
Double taxation is not avoided by choosing one return and ignoring the other. Each country first applies its domestic law. The treaty then coordinates the result, principally through situs rules and credits. For a U.S. citizen or domiciliary, foreign death-tax relief is generally claimed on Schedule P to Form 706; treaty situs rules determine which property supports the credit. Italy has its own foreign-tax credit mechanism under Article 26 of Legislative Decree 346/1990.
The credit is limited. It cannot normally exceed the portion of the domestic tax attributable to the same property, and timing, proof of payment and final foreign assessments matter. A mismatch can remain when the countries value property differently, tax different persons, grant different exemptions or characterize an asset differently.
The non-U.S.-citizen spouse and the QDOT problem
The unlimited U.S. marital deduction is generally unavailable when the surviving spouse is not a U.S. citizen unless property passes through a qualifying domestic trust (QDOT) or treaty relief applies. This can be decisive for an American married to an Italian citizen.
A QDOT is not a generic family trust. It requires a timely election and ongoing U.S. administration, and distributions of principal can trigger tax. It must be coordinated with the Italian civil-law and tax treatment of the trust, the spouse’s forced-heirship rights, and the practical location of the assets. The correct decision is often made years before death, not during preparation of Form 706.
The EU Succession Regulation: which law governs the estate?
Regulation (EU) No 650/2012 applies to successions opened on or after 17 August 2015 in participating Member States, including Italy. Its general connecting factor is the deceased’s habitual residence at death. Article 22 permits a person to choose the law of a country whose nationality they possess to govern the succession as a whole.
This can be important for a U.S. citizen habitually resident in Italy: a properly drafted professio juris may select the law of the relevant U.S. nationality. For the United States, a multi-unit legal system, the applicable state law must also be identified under the Regulation’s rules. The choice should therefore name the intended law precisely and be coordinated across the U.S. and Italian wills.
The Regulation does not determine inheritance tax. Tax and public-law revenue matters are outside its scope. A choice of U.S. succession law does not remove Italian inheritance tax, U.S. estate tax, treaty situs rules or filing duties.
| Question | Primary instrument | What it decides |
|---|---|---|
| Which law governs heirs, reserved shares and administration? | EU Regulation 650/2012 and the chosen or default succession law | Civil-law devolution of the estate. |
| Can Italy tax the transfer? | Italian Inheritance and Gift Tax Code | Territorial scope, rates, exemptions and filing. |
| Can the United States impose estate tax? | Internal Revenue Code and the 1955 treaty | Worldwide or situs-based U.S. estate-tax exposure and credits. |
Italian forced heirship: who is entitled to the reserved share?
If Italian succession law governs, Articles 536 and following of the Italian Civil Code protect the spouse, children and their descendants and, where there are no children, ascendants. These forced heirs are entitled to a minimum portion of the estate. Lifetime gifts can also enter the calculation when determining whether the reserved share has been impaired.
| Family at death | Indicative reserved portion | Disposable portion |
|---|---|---|
| Spouse only | 1/2 to the spouse | 1/2 |
| One child, no spouse | 1/2 to the child | 1/2 |
| Two or more children, no spouse | 2/3 collectively to the children | 1/3 |
| Spouse and one child | 1/3 spouse and 1/3 child | 1/3 |
| Spouse and two or more children | 1/4 spouse and 1/2 collectively to children | 1/4 |
A will that infringes the reserved share is not automatically erased. The protected heir may need to bring an action to reduce excessive testamentary dispositions or gifts. Whether Italian forced-heirship rules apply at all must be answered through Regulation 650/2012 before calculating these fractions.
Three illustrative cross-border scenarios
The following round figures are illustrations, not client calculations. They show why citizenship, domicile, situs and beneficiary relationship must be modelled together.
| Scenario | Initial exposure | Decision point |
|---|---|---|
| U.S. citizen domiciled in Italy. $18 million worldwide estate: €4 million Italian property, $10 million U.S. securities, balance in other foreign assets; spouse and two children. | Worldwide U.S. estate exceeds the $15 million 2026 basic exclusion before adjustments. Italy can also tax the worldwide transfer because of Italian residence. | Allocate assets by treaty situs, compute tax beneficiary by beneficiary in Italy, then test Schedule P credits and marital/QDOT treatment. |
| Italian entrepreneur, not a U.S. person. €6 million worldwide estate including $2 million of U.S. corporate shares and a $900,000 Florida property. | Italy taxes the worldwide succession if the decedent is Italian-resident. U.S.-situs assets exceed the $60,000 Form 706-NA threshold. | Classify shares and real estate under treaty situs rules, apportion deductions and claim treaty benefits rather than assuming the U.S. portfolio is protected by Italian residence. |
| U.S.–Italian couple. U.S.-citizen spouse owns $12 million; surviving spouse is an Italian citizen and not a U.S. citizen. | The estate may be below the 2026 filing threshold before prior gifts, but an outright transfer does not automatically receive the unlimited U.S. marital deduction. | Model portability filing, QDOT, Italian inheritance tax, asset liquidity and the surviving spouse’s future domicile before changing ownership. |
What a coordinated U.S.–Italy estate plan must contain
- A domicile memorandum. Record citizenship, immigration status, homes, family location, duration of stays and evidence of intent. Do not copy the income-tax residency conclusion.
- An asset-by-asset situs schedule. Identify issuer, debtor, legal owner, entity classification, location and beneficiary designation.
- Two tax computations. Calculate the U.S. and Italian systems independently before applying the treaty credit.
- A liquidity plan. Real estate-rich estates can owe tax before assets can be sold or transferred.
- Coordinated wills and trust analysis. EU succession law, Italian forced heirship, U.S. probate, trust taxation and tax situs are different questions.
- A post-death filing calendar. Form 706 or 706-NA, the Italian succession declaration, valuations, transfer certificates and treaty disclosures have different evidence and timing requirements.
Frequently asked questions
Does the U.S.–Italy estate tax treaty of 1955 still apply?
Yes. The IRS continues to list Italy among countries with a death-tax treaty in force. The treaty coordinates estate and inheritance taxation; it does not create a blanket exemption.
Does a U.S. citizen living in Italy pay estate tax in both countries?
Potentially. The United States can include worldwide assets because of citizenship, while Italy can include worldwide assets if the decedent was Italian-resident. Treaty and domestic credits may reduce double taxation, but separate filings or computations can remain necessary.
Can an Italian resident owe U.S. estate tax on U.S. investments?
Yes. A nonresident noncitizen can be exposed on U.S.-situs assets, and Form 706-NA generally becomes relevant above $60,000 of U.S.-situated gross assets. Shares, cash and fund interests must be classified rather than treated as one brokerage account.
Is U.S. estate-tax domicile the same as income-tax residence?
No. Estate-tax domicile is a facts-and-intent test. IRS instructions expressly note that a person can be a U.S. income-tax resident yet a nonresident for estate-tax purposes.
What are the Italian inheritance tax rates for close family?
Transfers to a spouse or direct descendants and ascendants are generally taxed at 4% above a €1 million exemption for each beneficiary. Other relationships have different rates and exemptions, and real estate can trigger additional mortgage and cadastral taxes.
Is property left to an Italian spouse automatically exempt from U.S. estate tax?
Not necessarily. If the surviving spouse is not a U.S. citizen, the unlimited marital deduction generally requires a QDOT or applicable treaty relief. Italian treatment and forced-heirship consequences must be tested separately.
Which country gives the credit for double taxation?
The answer depends on domicile, situs and the treaty allocation. A U.S. estate may claim foreign death-tax relief on Schedule P to Form 706, while Italian law also contains a foreign inheritance-tax credit. The credits are limited to tax attributable to the same property.
Is one will enough for assets in the United States and Italy?
Sometimes, but not automatically. The wills must be coordinated so that one does not revoke the other, and the plan must separately address governing succession law, probate, forced heirship, tax domicile, situs and beneficiary reporting.
Does the EU Succession Regulation determine inheritance tax?
No. Regulation 650/2012 determines jurisdiction and the law governing the civil succession, but tax and revenue matters are outside its scope. Italian and U.S. taxes remain governed by domestic tax law and the 1955 treaty.
Can a U.S. citizen living in Italy choose U.S. law and avoid Italian forced heirship?
Article 22 can permit a choice of the law of the person’s nationality, but the clause must be drafted precisely and coordinated with the applicable U.S. state law, matrimonial rights, public policy and the wills. It does not remove Italian tax.
Primary authorities and official guidance
- IRS — Estate and gift tax treaties (international)
- IRS — Instructions for Form 706
- IRS — Instructions for Form 706-NA
- IRS — Nonresidents with U.S. assets and estate tax returns
- Italian Inheritance and Gift Tax Code — Legislative Decree 346/1990
- EUR-Lex — Regulation (EU) No 650/2012
- European e-Justice Portal — Italian succession and reserved shares
Next step
Coordinate the succession before the estate is exposed.
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