for any taxable year beginning after December 31, 2017, and before January 1, 2026. . (b) Effective date The amendment made by this section shall apply to taxable years beginning after December 31, 2017. 11046. Suspension of overall limitation on itemized deductions (a) In general Section 68 is amended by adding at the end the following new subsection: (f) Section not to apply This section shall not apply to any taxable year beginning after December 31, 2017, and before January 1, 2026. . (b) Effective date The amendment made by this section shall apply to taxable years beginning after December 31, 2017. 11047. Modification of exclusion of gain from sale of principal residence (a) In general Section 121 is amended by adding at the end the following new subsection: (h) Special rules for sales or exchanges in taxable years 2018 through 2025 (1) In general In applying this section with respect to sales or exchanges after December 31, 2017, and before January 1, 2026— (A) 8-year shall be substituted for 5-year each place it appears in subsections (a), (b)(5)(C)(ii)(I), and (c)(1)(B)(i)(I) and paragraphs (7), (9), (10), and (12) of subsection (d), (B) 5 years shall be substituted for 2 years each place it appears in subsections (a), (b)(3), (b)(4), (b)(5)(C)(ii)(III), and (c)(1)(B)(ii), and (C) 5-year shall be substituted for 2-year in subsection (b)(3). (2) Exception for binding contracts Paragraph (1) shall not apply to any sale or exchange with respect to which there was a written binding contract in effect before January 1, 2018, and at all times thereafter before the sale or exchange. . (b) Effective date The amendment made by this section shall apply to sales and exchanges after December 31, 2017. 11048. Suspension of exclusion for qualified bicycle commuting reimbursement (a) In general Section 132(f) is amended by adding at the end the following new paragraph: (8) Suspension of qualified bicycle commuting reimbursement exclusion Paragraph (1)(D) shall not apply to any taxable year beginning after December 31,