Any increase determined under the preceding sentence shall be rounded to the nearest multiple of $50. . (b) Effective date The amendment made by this section shall apply to taxable years beginning after December 31, 2017. XV Earned Income Tax Credit 1501. Expansion of Earned Income Credit (a) Credit percentages for individuals with no qualifying children The item in the table in section 32(b)(1) of the Internal Revenue Code of 1986 under the column relating to the credit percentage is amended by striking 7.65 and inserting 15.3 . (b) Phaseout percentage for individuals with no qualifying children The item in the table in section 32(b)(1) of the Internal Revenue Code of 1986 under the column relating to the phaseout percentage is amended by striking 7.65 and inserting 15.3 . (c) Phaseout amount (1) In general The item in the table in section 32(b)(2)(A) of the Internal Revenue Code of 1986 under the column relating to the phaseout amount is amended by striking $5,280 and inserting $11,500 . (2) Inflation adjustment (A) In general Section 32(j) of the Internal Revenue Code of 1986 is amended by redesignating paragraph (2) as paragraph (3) and by inserting after paragraph (1) the following new paragraph: (2) Exception In the case of the amount in subsection (b)(2)(A) under the column relating to the phaseout amount for taxable years beginning after 2018, paragraph (1)(B)(i) shall be applied by substituting calendar year 2017 for calendar year 1995 and paragraph (1) shall not apply to such amount for taxable years beginning in 2016. . (B) Conforming amendments Section 32(j) of the Internal Revenue Code of 1986 is amended— (i) in paragraph (1)(B)(i) by inserting except as provided in paragraph (2) before in the case of , and (ii) in paragraph (2)(A) by inserting or (2) after paragraph (1) . (d) Expansion of age range of eligible individuals Section 32(c)(1)(A)(ii)(II) of the Internal Revenue Code of 1986 is amended by striking age 25 but not attained age 65 and inserting age 21 but not attained retirement age (as