ARTICLE 3
U.S. Income Tax Treaty — Italy Technical Explanation - 1984 · 2026-10-03 edition · updated 2026-10-04 · United States
General Definitions
Paragraph 1
Paragraph 1 defines a number of basic terms used in the Convention. Certain others are defined in other articles of the Convention. For example, the term "resident of a Contracting State" is defined in Article 4 (Resident). The term "permanent establishment" is defined in Article 5 (Permanent Establishment). The terms "dividends," "interest" and "royalties" are defined in Articles 10, 11 and 12, respectively. The introduction to paragraph 1 makes clear that these definitions apply for all purposes of the Convention, unless the context requires otherwise. This latter condition allows flexibility in the interpretation of the treaty in order to avoid unintended results. Terms that are not defined in the Convention are dealt with in paragraph 2.
Subparagraph 1(a) defines the term "person" to include an individual, a trust, a partnership, a company and any other body of persons. The definition is significant for a variety of reasons. For example, under Article 4, only a "person" can be a "resident" and therefore eligible for most benefits under the treaty. Also, all "persons" are eligible to claim relief under Article 25 (Mutual Agreement Procedure).
The term "company" is defined in subparagraph 1(b) as a body corporate or an entity treated as a body corporate for tax purposes. Although the Convention does not add “in the State in which it is organized,” as does the U.S. Model, the result should be the same, as the Commentaries to the OECD Model interpret language identical to that of the Convention in a manner consistent with the U.S. Model.
The terms "enterprise of a Contracting State" and "enterprise of the other Contracting State" are defined in subparagraph 1(c) as an enterprise carried on by a resident of a Contracting State and an enterprise carried on by a resident of the other Contracting State. The term "enterprise" is not defined in the Convention, nor is it defined in the OECD Model or its Commentaries. Despite the absence of a clear, generally accepted meaning for the term "enterprise," the term is understood to refer to any activity or set of activities that constitute a trade or business.
Although subparagraph 1(c) does not include the U.S. Model’s explicit reference to fiscally transparent enterprises, the negotiators understood that the terms “enterprise of a Contracting State” and “enterprise of the other Contracting State” encompass an enterprise conducted through an entity (such as a partnership) that is treated as fiscally transparent in the Contracting State where the entity’s owner is resident. In accordance with Article 4 (Resident), entities that are fiscally transparent in the country in which their owners are resident are not considered to be residents of a Contracting State (although income derived by such entities may be taxed as the income of a resident, if taxed in the hands of resident partners or other owners). This treatment ensures that an enterprise conducted by such an entity will be treated as carried on by a resident of a Contracting State to the extent its partners or other owners are residents. This approach is consistent with the Code, which under section 875 attributes a trade or business conducted by a partnership to its partners and a trade or business conducted by an estate or trust to its beneficiaries.
An enterprise of a Contracting State need not be carried on in that State. It may be carried
on in the other Contracting State or a third state (e.g., a U.S. corporation doing all of its business in Italy would still be a U.S. enterprise).
Subparagraph 1(d) defines the term "international traffic." The term means any transport by a ship or aircraft except when the transport is solely between places within a Contracting State. This definition is applicable principally in the context of Article 8 (Shipping and Air Transport). The definition in the OECD Model refers to the operator of the ship or aircraft having its place of effective management in a Contracting State (i.e., being a resident of that State). The U.S. Model does not include this limitation. The broader definition combines with paragraph 1 of Article 8 and paragraph 7 of Article 1 of the Protocol to exempt from tax by the source State income from the rental of containers that is earned both by lessors that are operators of ships and aircraft and by those lessors that are not (e.g., banks or container leasing companies).
The exclusion from international traffic of transport solely between places within a Contracting State means, for example, that carriage of goods or passengers solely between New York and Chicago would not be treated as international traffic, whether carried by a U.S. or a foreign carrier. The substantive taxing rules of the Convention relating to the taxation of income from transport, principally Article 8 (Shipping and Air Transport), therefore, would not apply to income from such carriage. Thus, if the carrier engaged in internal U.S. traffic were a resident of Italy (assuming that were possible under U.S. law), the United States would not be required to exempt the income from that transport under Article 8. The income would, however, be treated as business profits under Article 7 (Business Profits), and therefore would be taxable in the United States only if attributable to a U.S. permanent establishment of the foreign carrier, and then only on a net basis. The gross basis U.S. tax imposed by section 887 would never apply under the circumstances described. If, however, goods or passengers are carried by a carrier resident in Italy from a non-U.S. port to, for example, New York, and some of the goods or passengers continue on to Chicago, the entire transport would be international traffic. This would be true if the international carrier transferred the goods at the U.S. port of entry from a ship to a land vehicle, from a ship to a lighter, or even if the overland portion of the trip in the United States was handled by an independent carrier under contract with the original international carrier, so long as both parts of the trip were reflected in original bills of lading. For this reason, the Convention refers, in the definition of "international traffic," to "such transport" being solely between places in the other Contracting State, while the OECD Model refers to the ship or aircraft being operated solely between such places. The Convention’s definition is intended to make clear that, as in the above example, even if the goods are carried on a different aircraft for the internal portion of the international voyage than is used for the overseas portion of the trip, the definition applies to that internal portion as well as the external portion.
Finally, a “cruise to nowhere,” i.e., a cruise beginning and ending in a port in the same Contracting State with no stops in a foreign port, would not constitute international traffic.
Subparagraphs 1(e)(i) and (ii) define the term "competent authority" for the United States and Italy, respectively. The U.S. competent authority is the Secretary of the Treasury or his delegate. The Secretary of the Treasury has delegated the competent authority function to the Commissioner of Internal Revenue, who in turn has delegated the authority to the Assistant
Commissioner (International). With respect to interpretative issues, the Assistant Commissioner acts with the concurrence of the Associate Chief Counsel (International) of the Internal Revenue Service. The Italian competent authority is the Ministry of Finance.
The term "United States" is defined in subparagraph 1(f) to mean the United States of America, including the states, the District of Columbia and the territorial sea of the United States. The term does not include Puerto Rico, the Virgin Islands, Guam or any other U.S. possession or territory. For certain purposes, the definition is extended to include the seabed, subsoil, and superjacent waters of undersea areas adjacent to the territorial sea of the United States. This extension applies to the extent that the United States exercises sovereignty in accordance with international law for the purpose of natural resource exploration and exploitation of such areas. This extension of the definition applies, however, only if the person, property or activity to which the Convention is being applied is connected with such natural resource exploration or exploitation. Thus, it would not include any activity involving the sea floor of an area over which the United States exercised sovereignty for natural resource purposes if that activity was unrelated to the exploration and exploitation of natural resources.
The term “Italy” is defined in subparagraph 1(g) to mean the Republic of Italy, including the territorial sea. As with the definition of United States, the definition of Italy is extended for certain purposes to include the sea bed, subsoil, and superjacent waters of undersea areas adjacent to the territorial sea of Italy to the extent that Italy exercises sovereignty in accordance with international law for the purpose of natural resource exploration and exploitation of such areas.
The term "national," as it relates to the United States and to Italy, is defined in subparagraphs 1(h)(i) and (ii). This term is relevant for purposes of Articles 19 (Government Service) and 24 (Non-Discrimination). A national of one of the Contracting States is
(1) an individual who is a citizen of that State, and (2) any legal person, partnership or association deriving its status as such from the law in force in the State where it is established. This definition is closely analogous to that found in the OECD Model.
The inclusion of juridical persons in the definition may have significance in relation to paragraph 1 of Article 24 (Non-Discrimination), which provides that nationals of one Contracting State may not be subject in the other to any taxes or connected requirements that are more burdensome than those applicable to nationals of that other State who are in the same circumstances.
Subparagraph 1(i) defines the term "qualified governmental entity". This definition is relevant for purposes of Articles 4 (Resident), 10 (Dividends), and 11 (Interest), and Article 2 of the Protocol, regarding limitation on benefits. The term means:
(i) the Government of a Contracting State or of a political subdivision or local authority of the Contracting State;
(ii) a person wholly owned by a governmental entity described in subparagraph (i), that satisfies certain organizational and funding standards; and
(iii) a pension fund of a person that meets the standards of subparagraphs (i) and (ii) and that provides government service pension benefits, described in
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