(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