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 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.
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.
Profits of an Italian company are US-taxable only if attributable to a US PE. Without a PE, no US tax on business profits.
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.
US interest to an Italian recipient: maximum 10% withholding. Some categories (e.g., interest on certain US government obligations) are exempt.
Royalties for use of copyright, patents, know-how: maximum 8% (5% in some cases for software and scientific literature).
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.
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.
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.
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.
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]
The 1984 Italy-USA Tax Treaty: Guide to Key Provisions is handled from our Florida practice for Italian clients living in the United States and in Italy: office in St. Petersburg (Pinellas County, Tampa Bay), assistance across Florida — including Miami and South Florida — and remotely throughout Italy.
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IIILEX International Consulting LLC is the Florida-based practice of Avv. Dott. Massimo Leonardi — Italian-qualified Attorney (Avvocato), Dottore Commercialista and Statutory Auditor (Revisore Legale), qualified in Italy, with 30+ years of Italian practice. We work exclusively on cross-border matters between Italy and the United States, in coordination with licensed U.S. professionals for matters of U.S. law.
IIILEX International Consulting LLC · 7901 4th St N STE 300, St. Petersburg, FL 33702 · us@3lex.us · +1 (786) 604-8763 · +39 335 344 9660
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.