An Italian company can sell to U.S. customers without a U.S. subsidiary, but that does not mean no U.S. tax. How the U.S. trade or business and ECI tests interact with Articles 5 and 7 of the Italy–U.S. treaty, four operating models and the filings to consider.
Published: 2026-10-29 · Last verified: 2026-10-29 · 9 min
Quick answer: an Italian company can sell to U.S. customers without a U.S. subsidiary, but "no U.S. entity" is not the same as "no U.S. tax". The federal analysis has two layers: first, whether the activity is a U.S. trade or business (USTB) producing effectively connected income (ECI) under the Internal Revenue Code; second, for an enterprise eligible for treaty benefits, whether it has a permanent establishment (PE) under Articles 5 and 7 of the 1999 Italy–U.S. income tax convention. State taxes, sales tax and payroll sit outside the treaty.
By Massimo Leonardi, Avvocato, Dottore Commercialista and Revisore Legale (Italy). Information as of 16 October 2026; U.S. tax positions are coordinated with licensed U.S. professionals.
This article covers the company that sells from Italy. If you are deciding whether to open a U.S. company at all, start from do I need a U.S. LLC to sell in America?; for the treaty itself see the Italy–U.S. tax treaty service.
An Italian enterprise can enter the American market through direct exports, cross-border professional services, independent distributors, a sales representative or a U.S. entity. The right choice depends on commercial substance — employees, inventory, contractual authority, regulatory exposure — not on the assumption that every U.S. customer triggers U.S. federal income tax. Equally, not having a Delaware or Florida LLC does not, on its own, prove that no U.S. filing or liability exists.
Under the Internal Revenue Code, a foreign corporation may have a USTB when it conducts sufficiently substantive activities within the United States. U.S.-performed services and running a sales operation in the country are key indicators. The IRS explains that, where a foreign person is engaged in a USTB, U.S.-source operating income is generally treated as ECI, subject to technical exceptions and special sourcing rules.
The test is factual. A U.S. address, a bank account or a payment processor is not, by itself, the answer; nor is the place where invoices are issued. What matters is who performs the functions, where staff work, how inventory is handled, which agents act for the enterprise and where commercial risk sits. Services income and inventory sales follow different sourcing rules.
Where ECI is taxable, connected deductions may be allowed — but a foreign corporation must also evaluate its Form 1120-F obligations, including when a protective return is advisable.
Article 7 of the Italy–U.S. convention (signed 1999, in force since 16 December 2009) generally provides that business profits of an enterprise of one State are taxable only there, unless it carries on business in the other State through a PE situated there; in that case only profits attributable to the PE can be taxed.
Article 5 defines a PE as a fixed place of business through which the business is wholly or partly carried on — an office, branch, place of management, factory. It also covers an agent who habitually exercises authority to conclude contracts in the enterprise's name, with exceptions for genuinely independent agents and for certain preparatory or auxiliary activities.
USTB and PE are not interchangeable. Domestic taxable presence can be broader than treaty presence, and the treaty helps only an eligible claimant that meets the requirements, including limitation-on-benefits rules and any required disclosure.
Model — Typical facts — Main point to check
1. Direct sales from Italy — Orders accepted in Italy, goods shipped, no U.S. staff or premises — Customs, sales tax and state rules may still apply even without a PE
2. Dependent sales agent — U.S. representative habitually concludes contracts in the company's name — May create a PE; contract titles are not decisive if conduct differs
3. U.S. staff or office — Management, negotiation or service delivery from a U.S. location — Likely substantial USTB; PE depends on facts and treaty exceptions
4. U.S. warehouse / fulfillment — Storage and delivery in the U.S. — No automatic "warehouse exemption": check the treaty text against real activity
The treaty governs specified national income taxes. It is not an exemption from state or local taxes, sales and use tax collection, employment obligations, customs, licensing or state registration — each has its own connecting factors. An Italian company can have no PE and still face state-level obligations; see for example Florida sales tax for LLCs.
On the Italian side, profits taxed in the U.S. through a PE interact with the foreign tax credit (art. 165 TUIR) and with the Italian rules on foreign branches: the two positions should be designed together.
The practical output is a short operating memorandum — organization chart, contracting policy, travel and agent protocols, treaty-eligibility analysis and a compliance calendar — reviewed as sales, staff or logistics change. Tax treatment follows commercial reality, not the label on a corporate chart. If a U.S. company becomes the right answer, the next step is choosing the state and forming the LLC.
General information, not a legal opinion or fact-specific tax advice. U.S. federal and state positions are reviewed with licensed U.S. professionals.
Yes. Direct exports, cross-border services, independent distributors or a sales representative are possible. The absence of a U.S. LLC does not by itself mean that no U.S. tax filing or liability exists: the actual activities must be analyzed.
Under domestic law the first question is whether the activities amount to a U.S. trade or business (USTB); if so, the second is whether income is effectively connected with that business (ECI). Where a foreign person has a USTB, U.S.-source operating income is generally treated as ECI, subject to exceptions and sourcing rules.
Under Article 7, business profits of an Italian enterprise eligible for treaty benefits are taxable in the U.S. only if it carries on business through a U.S. permanent establishment, and only on profits attributable to it. Article 5 defines a PE as a fixed place of business or a dependent agent habitually concluding contracts in the enterprise's name.
No. The treaty primarily governs specified national income taxes. It is not a general exemption from state or local taxes, sales and use tax, employment obligations, customs, licensing or state registration.
Depending on the facts: Form 1120-F (including a protective return to preserve deductions), Form 8833 when a treaty-based position reduces or modifies U.S. tax, and Form W-8BEN-E or another appropriate form for payments subject to withholding.
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Massimo Leonardi is admitted to practice law in Italy and is not admitted to practice law in Florida or elsewhere in the United States. He is qualified in Italy as Dottore Commercialista and Revisore Legale and is not a U.S. Certified Public Accountant. IIILEX International Consulting LLC provides cross-border consulting and Italian legal and tax advisory services. Matters requiring advice on U.S. or Florida law are handled in coordination with appropriately licensed U.S. professionals.