Unrelated business activities.
(v) Unrelated business activities. The term net income from unrelated business activities in section 509(d)(3) includes (but is not limited to) an organization's unrelated business taxable income (UBTI) within the meaning of section 512. However, when calculating UBTI for purposes of determining support (within the meaning of this paragraph (f)(7)), section 512(a)(6) does not apply. Accordingly, in the case of an organization that derives gross income from the regular conduct of two or more unrelated business activities, support includes the aggregate of gross income from all such unrelated business activities less the aggregate of the deductions allowed with respect to all such unrelated business activities. Nonetheless, when determining support, such organization can use either its UBTI calculated under section 512(a)(6) or its UBTI calculated in the aggregate.