Article-by-article overview of the most-applied provisions: permanent establishment, dividends, royalties, capital gains, pensions, employment income.
Published: 2026-03-20 · Last verified: 2026-03-20 · 9 min
The treaty in force The Italy-USA Tax Treaty was signed in 1984, ratified by the US Senate in 1985, and amended by Protocol in 1999. It is the legal backbone of every cross-border tax position between the two countries. Article 5 — Permanent Establishment A PE is a fixed place of business — office, branch, warehouse, factory — through which an enterprise carries on its business. A construction site lasting more than 12 months is also a PE. Most importantly: a dependent agent in the other country with authority to conclude contracts in the company's name creates a PE. For Italian companies operating in the US, the PE risk is the most underestimated. A solo Florida-based salesperson concluding deals can create a PE. Article 7 — Business Profits Profits of an Italian company are US-taxable only if attributable to a US PE. Without a PE, no US tax on business profits. Article 10 — Dividends US dividends to an Italian recipient: maximum 15% withholding (5% if the recipient owns ≥25% of the US payer). Treaty rate requires Form W-8BEN/-E filed with the US payer. Article 11 — Interest US interest to an Italian recipient: maximum 10% withholding. Some categories (e.g., interest on certain US government obligations) are exempt. Article 12 — Royalties Royalties for use of copyright, patents, know-how: maximum 8% (5% in some cases for software and scientific literature). Article 13 — Capital Gains Capital gains on US shares by an Italian: taxable only in Italy unless the seller has or had a US PE. Real-estate-rich US shares (USRPHC under FIRPTA) are an exception — taxed in both countries. Article 15 — Employment Income Italian employee working in the US: US-taxable on income from US-performed work if more than 183 days, OR if the Italian employer has a US PE bearing the cost. Below 183 days and no US PE: Italian-taxable only. Article 18 — Pensions Private-sector pensions follow residence: an Italian pension paid to a US resident is generally US-taxable only. Public-sector pensions remain in the source country (Italian INPDAP stays Italian-taxable). US Social Security received by an Italian resident: generally Italian-taxable only. Article 22 — Tax Credits The mechanism that prevents double taxation. The US grants Foreign Tax Credit on Italian taxes (Form 1116). Italy grants credit on US taxes (art. 165 TUIR). Both have proportional limits and timing rules. Article 25 — Mutual Agreement Procedure When double taxation cannot be resolved domestically, taxpayers can request the competent authorities (Agenzia delle Entrate and IRS) to negotiate a resolution. MAP is slow (often 2-4 years) but effective for material disputes. [LAST VERIFIED: 2026]
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IIILEX International Consulting LLC is the Florida-based practice of Avv. Dott. Massimo Leonardi — Italian Attorney (Avvocato), Certified Public Accountant (Dottore Commercialista) and Statutory Auditor (Revisore Legale) with 30+ years of Italian practice. We work exclusively on cross-border matters between Italy and the United States.
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