Upstream partnership loan interest expense (UPL interest expense)
(E) Upstream partnership loan interest expense (UPL interest expense). The term upstream partnership loan interest expense, or UPL interest expense, means an item of interest expense paid or accrued with respect to an upstream partnership loan, without regard to whether the expense was currently deductible (for example, by reason of section 163(j) or the election to waive deductions pursuant to 1.59A-3(c)(6)). (F) Upstream partnership loan interest income (UPL interest income). The term upstream partnership loan interest income, or UPL interest income, means an item of gross interest income received or accrued with respect to an upstream partnership loan. (vi) Examples. The following examples illustrate the application of this paragraph (e)(9). (A) Example 1(1) Facts. US1, a domestic corporation, directly owns 60% of PRS, a foreign partnership that is not engaged in a U.S. trade or business. The remaining 40% of PRS is directly owned by US2, a domestic corporation that is unrelated to US1. US1, US2, and PRS all use the calendar year as their taxable year. In Year 1, PRS loans $1,000x to US1. For Year 1, US1 has $100x of interest expense with respect to the loan and PRS has $100x of interest income with respect to the loan. US1's distributive share of the interest income is $60x. Under paragraph (e)(2) of this section, $75x of US1's interest expense with respect to the loan is allocated and apportioned to U.S. source income and $25x is allocated and apportioned to foreign source foreign branch category income. Under paragraph (h)(4)(i) of this section, US1's share of the total value of the loan between US1 and PRS is $600x.