excess taxable income
(4) Application to partnerships, etc. (A) In general In the case of any partnership— (i) this subsection shall be applied at the partnership level and any deduction for business interest shall be taken into account in determining the non-separately stated taxable income or loss of the partnership, and (ii) the adjusted taxable income of each partner of such partnership— (I) shall be determined without regard to such partner’s distributive share of any items of income, gain, deduction, or loss of such partnership, and (II) shall be increased by such partner’s distributive share of such partnership’s excess taxable income. For purposes of clause (ii)(II), a partner’s distributive share of partnership excess taxable income shall be determined in the same manner as the partner’s distributive share of nonseparately stated taxable income or loss of the partnership. (B) Special rules for carryforwards (i) In general The amount of any business interest not allowed as a deduction to a partnership for any taxable year by reason of paragraph (1) for any taxable year— (I) shall not be treated under paragraph (2) as business interest paid or accrued by the partnership in the succeeding taxable year, and (II) shall, subject to clause (ii), be treated as excess business interest which is allocated to each partner in the same manner as the non-separately stated taxable income or loss of the partnership. (ii) Treatment of excess business interest allocated to partners If a partner is allocated any excess business interest from a partnership under clause (i) for any taxable year— (I) such excess business interest shall be treated as business interest paid or accrued by the partner in the next succeeding taxable year in which the partner is allocated excess taxable income from such partnership, but only to the extent of such excess taxable income, and (II) any portion of such excess business interest remaining after the application of subclause (I) shall, subject to the limitations of subclause (I), be treated as business interest paid or accrued in succeeding taxable years. For purposes of applying this paragraph, excess taxable income allocated to a partner from a partnership for any taxable year shall not be taken into account under paragraph (1)(A) with respect to any business interest other than excess business interest from the partnership until all such excess business interest for such taxable year and all preceding taxable years has been treated as paid or accrued under clause (ii). (iii) Basis adjustments (I) In general The adjusted basis of a partner in a partnership interest shall be reduced (but not below zero) by the amount of excess business interest allocated to the partner under clause (i)(II). (II) Special rule for dispositions If a partner disposes of a partnership interest, the adjusted basis of the partner in the partnership interest shall be increased immediately before the disposition by the amount of the excess (if any) of the amount of the basis reduction under subclause (I) over the portion of any excess business interest allocated to the partner under clause (i)(II) which has previously been treated under clause (ii) as business interest paid or accrued by the partner. The preceding sentence shall also apply to transfers of the partnership interest (including by reason of death) in a transaction in which gain is not recognized in whole or in part. No deduction shall be allowed to the transferor or transferee under this chapter for any excess business interest resulting in a basis increase under this subclause. (C) Excess taxable income The term “excess taxable income” means, with respect to any partnership, the amount which bears the same ratio to the partnership’s adjusted taxable income as— (i) the excess (if any) of— (I) the amount determined for the partnership under paragraph (1)(B), over (II) the amount (if any) by which the business interest of the partnership, reduced by the floor plan financing interest, exceeds the business interest income of the partnership, bears to (ii) the amount determined for the partnership under paragraph (1)(B). (D) Application to S corporations Rules similar to the rules of subparagraphs (A) and (C) shall apply with respect to any S corporation and its shareholders.
26 USC § 163(j)(4)
None identified, default scope is assumed to be the parent (part VI) of this section.