of an estate or trust, $12,700. (C) Inflation adjustment In the case of any taxable year beginning after 2018, each of the dollar amounts in subparagraphs (A) and (B) shall be increased by an amount equal to— (i) such dollar amount, multiplied by (ii) the cost-of-living adjustment determined under subsection (c)(2)(A) for the calendar year in which the taxable year begins, determined by substituting calendar year 2017 for calendar year 2016 in clause (ii) thereof. . (c) Application of section 15 (1) In general Subsection (a) of section 15 is amended by striking by this chapter and inserting by section 11 (or by reference to any such rates) . (2) Conforming amendments (A) Section 15 is amended by striking subsections (d) and (f) and by redesignating subsection (e) as subsection (d). (B) Section 15(d), as redesignated by subparagraph (A), is amended by striking section 1 or 11(b) and inserting section 11(b) . (C) Section 6013(c) is amended by striking sections 15, 443, and 7851(a)(1)(A) and inserting sections 443 and 7851(a)(1)(A) . (3) Application to this Act Section 15 of the Internal Revenue Code of 1986 shall not apply to any change in a rate of tax imposed by chapter 1 of such Code which occurs by reason of any amendment made by this Act (other than the amendments made by section 3001). (d) Effective date (1) In general The amendments made by this section shall apply to taxable years beginning after December 31, 2017. (2) Subsection (c) The amendments made by subsection (c) shall take effect on the date of the enactment of this Act. 1002. Enhancement of standard deduction (a) Increase in standard deduction Section 63(c) is amended to read as follows: (c) Standard deduction For purposes of this subtitle— (1) In general Except as otherwise provided in this subsection, the term standard deduction means— (A) $24,400, in the case of a joint return (or a surviving spouse (as defined in section 2(a)), (B) three-quarters of the amount in effect under subparagraph (A) for the taxable year, in the case of the head of a