(D) of section 62(a)(2) is amended by striking $250 and inserting $250 ($500 in the case of taxable years 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. V Deductions and exclusions 11041. Suspension of deduction for personal exemptions (a) In general Subsection (d) of section 151 is amended— (1) by striking In the case of in paragraph (4) and inserting Except as provided in paragraph (5), in the case of , and (2) by adding at the end the following new paragraph: (5) Special rules for taxable years 2018 through 2025 In the case of a taxable year beginning after December 31, 2017, and before January 1, 2026— (A) Exemption amount The term exemption amount means zero. (B) References For purposes of any other provision of this title, the reduction of the exemption amount to zero under subparagraph (A) shall not be taken into account in determining whether a deduction is allowed or allowable, or whether a taxpayer is entitled to a deduction, under this section. . (b) Application to estates and trusts Section 642(b)(2)(C) is amended by adding at the end the following new clause: (iii) Years when personal exemption amount is zero (I) In general In the case of any taxable year in which the exemption amount under section 151(d) is zero, clause (i) shall be applied by substituting $4,150 for the exemption amount under section 151(d) . (II) Inflation adjustment In the case of any calendar year beginning after 2018, the $4,150 amount in subparagraph (A) shall be increased by an amount equal to— (aa) such dollar amount, multiplied by (bb) the cost-of-living adjustment determined under section 1(f)(3) for the calendar year in which the taxable year begins, determined by substituting 2017 for 2016 in subparagraph (A)(ii) thereof. If any increase determined under the preceding sentence is not a multiple of $100, such increase shall be rounded to the next lowest multiple of $100. . (c) Exception