What if U.S. partners collectively own exactly 50%?

The threshold is more than 50%, not 50% or more. If U.S. persons collectively own exactly 50%, the partnership is not U.S.-controlled and Category 2 does not apply.

How is ownership measured?

Ownership is measured by interests in capital, profits, losses, or deductions. Direct, indirect, and constructive ownership rules all apply, similar to Category 1.

Form 8865 Foreign Partnerships

Form 8865 Category 2: Acquisitions and Dispositions

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Key Takeaways

Category 2: you own 10%+ in a foreign partnership that is collectively U.S.-controlled (>50%)
U.S. control is measured collectively across all U.S. person owners
Mutually exclusive with Category 1 — if a Category 1 filer exists, no one files Category 2
Common scenario: multiple U.S. partners each owning 10-50% of a foreign partnership
Same penalties as Category 1: $10,000 for failure to file

Form 8865 Category 2: U.S.-Controlled Foreign Partnership

Category 2 applies when a foreign partnership is collectively controlled by U.S. persons who together own more than 50% of the partnership, and you individually own 10% or more. The key distinction from Category 1 is that no single U.S. person controls the partnership — it is U.S.-controlled collectively.

Mutual Exclusivity with Category 1

Category 1 and Category 2 are mutually exclusive for a given tax year. If any U.S. person qualifies as a Category 1 filer (controlling more than 50% individually) at any time during the year, no one is a Category 2 filer for that year. Category 2 only applies when U.S. control is collective, not individual.

For example, if four U.S. business partners each own 25% of a Singapore partnership, each owns more than 10% in a U.S.-controlled partnership (4 × 25% = 100% U.S. controlled). All four are Category 2 filers.

form 8865foreign partnershipinternational tax