interest expense
(7) Interest expense The term “interest expense” means the aggregate amount allowable to the taxpayer as a deduction for interest (within the meaning of section 265(b)(4) ) for the taxable year (determined without regard to this subsection, section 265(b), and section 291).
Source
26 USC § 264(f)(7)
Scoping language
None identified, default scope is assumed to be the parent (part IX) of this section.