lending or finance business
(5) Special rules for banks and lending or finance companies With respect to any corporation which is a bank (as defined in section 581 ) or is primarily engaged in a lending or finance business— (A) in determining under paragraph (2) the ratio of debt to equity of such corporation (or of the affiliated group of which such corporation is a member), the total indebtedness of such corporation (and the assets of such corporation) shall be reduced by an amount equal to the total indebtedness owed to such corporation which arises out of the banking business of such corporation, or out of the lending or finance business of such corporation, as the case may be; (B) in determining under paragraph (4) the annual interest to be paid or incurred by such corporation (or by the issuing and acquired corporations referred to in paragraph (4)(B) or by the affiliated group of which such corporation is a member) the amount of such interest (determined without regard to this paragraph) shall be reduced by an amount which bears the same ratio to the amount of such interest as the amount of the reduction for the taxable year under subparagraph (A) bears to the total indebtedness of such corporation; and (C) in determining under paragraph (3)(B) the average annual earnings, the amount of the earnings and profits for the 3-year period shall be reduced by the sum of the reductions under subparagraph (B) for such period. For purposes of this paragraph, the term “lending or finance business” means a business of making loans or purchasing or discounting accounts receivable, notes, or installment obligations.