account such amendments) on the basis of the information provided by the taxpayer on such return, and (2) to the extent that such redetermination results in an overpayment of tax, credit or refund such overpayment as expeditiously as possible. II American Innovation and Growth 201. Deduction for domestic research and experimental expenditures (a) Delay of amortization of domestic research and experimental expenditures Section 174 is amended by adding at the end the following new subsection: (e) Suspension of application of section to domestic research and experimental expenditures In the case of any domestic research or experimental expenditures (as defined in section 174A(b)), this section— (1) shall apply to such expenditures paid or incurred in taxable years beginning after December 31, 2025, and (2) shall not apply to such expenditures paid or incurred in taxable years beginning on or before such date. . (b) Reinstatement of expensing for domestic research and experimental expenditures Part VI of subchapter B of chapter 1 is amended by inserting after section 174 the following new section: 174A. Temporary rules for domestic research and experimental expenditures (a) Treatment as expenses Notwithstanding section 263, there shall be allowed as a deduction any domestic research or experimental expenditures which are paid or incurred by the taxpayer during the taxable year. (b) Domestic research or experimental expenditures For purposes of this section, the term domestic research or experimental expenditures means research or experimental expenditures paid or incurred by the taxpayer in connection with the taxpayer’s trade or business other than such expenditures which are attributable to foreign research (within the meaning of section 41(d)(4)(F)). (c) Amortization of certain domestic research and experimental expenditures (1) In general At the election of the taxpayer, made in accordance with regulations or other guidance provided by the Secretary, in the case of domestic research or experimental expenditures