section 951(a)(1) by reason of this section shall, in lieu of the taxable year in which it would otherwise be included in gross income (for purposes of the computation of real estate investment trust taxable income under section 857(b)), be included in gross income as follows: (i) 8 percent of such amount in the case of each of the taxable years in the 5-taxable year period beginning with the taxable year in which such amount would otherwise be included. (ii) 15 percent of such amount in the case of the 1st taxable year following such period. (iii) 20 percent of such amount in the case of the 2nd taxable year following such period. (iv) 25 percent of such amount in the case of the 3rd taxable year following such period. (2) Rules for trusts electing deferred inclusion (A) Election Any election under paragraph (1)(B) shall be made not later than the due date for the first taxable year in the 5-taxable year period described in clause (i) of paragraph (1)(B) and shall be made in such manner as the Secretary shall provide. (B) Special rules If an election under paragraph (1)(B) is in effect with respect to any real estate investment trust, the following rules shall apply: (i) Application of participation exemption For purposes of subsection (c)(1)— (I) the aggregate amount to which subparagraph (A) or (B) of subsection (c)(1) applies shall be determined without regard to the election, (II) each such aggregate amount shall be allocated to each taxable year described in paragraph (1)(B) in the same proportion as the amount included in the gross income of such United States shareholder under section 951(a)(1) by reason of this section is allocated to each such taxable year. (III) No installment payments The real estate investment trust may not make an election under subsection (g) for any taxable year described in paragraph (1)(B). (ii) Acceleration of inclusion If there is a liquidation or sale of substantially all the assets of the real estate investment trust (including in a title 11 or similar case), a cessation of