and inserting $2,500 . (3) Inflation adjustment Section 24(d) of such Code is amended by inserting after paragraph (3) the following new paragraph: (4) Adjustment for inflation (A) In general In the case of a taxable year beginning after 2018, the $1,400 amount in paragraph (1)(A)(i) shall be increased by an amount equal to— (i) such dollar amount, multiplied by (ii) 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. (B) Rounding If any increase under subparagraph (A) is not a multiple of $100, such increase shall be rounded to the next lowest multiple of $100. (C) Limitation The amount of any increase under subparagraph (A) (after the application of subparagraph (B)) shall not exceed $600. . (4) Conforming amendments (A) Section 24(e) of such Code is amended to read as follows: (e) Taxpayer identification requirement No credit shall be allowed under this section if the identifying number of the taxpayer was issued after the due date for filing the return of tax for the taxable year. . (B) Section 24 of such Code is amended by striking subsection (h). (c) Effective date The amendments made by this section shall apply to taxable years beginning after December 31, 2017. 3. Elimination of deduction for personal exemptions (a) In general Section 151(d)(5) of the Internal Revenue Code of 1986 is amended by striking , and before January 1, 2026 . (b) Conforming amendments (1) Section 152(d)(1)(B) is amended by inserting after section 151(d)) the following: or, in the case of a taxable year for which the exemption amount is zero, the dollar amount in effect for the taxable year under section 6334(d)(4)(B) . (2) The heading of section 151(d)(5) of such Code is amended by striking 2018 through 2025 and inserting after 2017 . (3) The second sentence of section 6334(d)(4)(C) is amended by striking $100 each place it appears and inserting $50 . (c) Effective date The amendments made