26 U.S.C. § 860C: Taxation of residual interests

In determining the tax under this chapter of any holder of a residual interest in a REMIC, such holder shall take into account his daily portion of the taxable income or net loss of such REMIC for each day during the taxable year on which such holder held such interest. by allocating to each day in any calendar quarter its ratable portion of the taxable income (or net loss) for such quarter, and by allocating the amount so allocated to any day among the holders (on such day) of residual interests in proportion to their respective holdings on such day. regular interests in such REMIC (if not otherwise debt instruments) shall be treated as indebtedness of such REMIC, market discount on any market discount bond shall be included in gross income for the taxable years to which it is attributable as determined under the rules of section 1276(b)(2) (and sections 1276(a) and 1277 shall not apply), there shall not be taken into account any item of income, gain, loss, or deduction allocable to a prohibited transaction, the deductions referred to in section 703(a)(2) (other than any deduction under section 212) shall not be allowed, and the amount of the net income from foreclosure property (if any) shall be reduced by the amount of the tax imposed by section 860G(c). the deductions allowable in computing the taxable income of such REMIC, over its gross income. shall not be included in gross income to the extent it does not exceed the adjusted basis of the interest, and to the extent it exceeds the adjusted basis of the interest, shall be treated as gain from the sale or exchange of such interest. The basis of any person’s residual interest in a REMIC shall be increased by the amount of the taxable income of such REMIC taken into account under subsection (a) by such person with respect to such interest. any distributions to such person with respect to such interest, and any net loss of such REMIC taken into account under subsection (a) by such person with respect to such interest. Any amount taken into account under subsection (a) by any holder of a residual interest in a REMIC shall be treated as ordinary income or ordinary loss, as the case may be. The amount of the net loss of any REMIC taken into account by a holder under subsection (a) with respect to any calendar quarter shall not exceed the adjusted basis of such holder’s residual interest in such REMIC as of the close of such calendar quarter (determined without regard to the adjustment under subsection (d)(2)(B) for such calendar quarter). Any loss disallowed by reason of subparagraph (A) shall be treated as incurred by the REMIC in the succeeding calendar quarter with respect to such holder. For special treatment of income in excess of daily accruals, see section 860E.