13206 of Public Law 115–97 is amended by striking subsection (b) (relating to change in method of accounting). (2) The table of sections for part VI of subchapter B of chapter 1 is amended by inserting after the item relating to section 174 the following new item: Sec. 174A. Temporary rules for domestic research and experimental expenditures. . (e) Effective date (1) In general Except as otherwise provided in this subsection, the amendments made by this section shall apply to amounts paid or incurred in taxable years beginning after December 31, 2021. (2) Coordination with research credit The amendment made by subsection (c)(1)(B) shall apply to taxable years beginning after December 31, 2022. (3) Repeal of superceded change in method of accounting rules The amendment made by subsection (d)(1) shall take effect as if included in Public Law 115–97 . (4) No inference with respect to coordination with research credit for prior periods The amendment made by subsection (c)(1)(B) shall not be construed to create any inference with respect to the proper application of section 280C(c) of the Internal Revenue Code of 1986 with respect to taxable years beginning before January 1, 2023. (f) Transition rules (1) In general Except as otherwise provided by the Secretary, an election made under subsection (c) or (d) of section 174A of the Internal Revenue Code of 1986 (as added by this section) for the taxpayer’s first taxable year beginning after December 31, 2021, shall not fail to be treated as timely made (or as made on the return) if made during the 1-year period beginning on the date of the enactment of this Act on an amended return for the taxpayer’s first taxable year beginning after December 31, 2021, or in such other manner as the Secretary may provide. (2) Election regarding treatment as change in method of accounting In the case of any taxpayer which (as of the date of the enactment of this Act) had adopted a method of accounting provided by section 174 of the Internal Revenue Code of 1986 (as in effect prior to