(4) Definitions For purposes of this subsection— (A) Interest expense The term “interest expense” means the aggregate amount allowable to the taxpayer as a deduction for interest for the taxable year (determined without regard to this subsection, section 264, and section 291). For purposes of the preceding sentence, the term “interest” includes amounts (whether or not designated as interest) paid in respect of deposits, investment certificates, or withdrawable or repurchasable shares. (B) Tax-exempt obligation The term “tax-exempt obligation” means any obligation the interest on which is wholly exempt from taxes imposed by this subtitle. Such term includes shares of stock of a regulated investment company which during the taxable year of the holder thereof distributes exempt-interest dividends.
