As soon as practicable and not later than 1 year after the date of the enactment of this section, the Secretary shall establish a program for making advance payments of the credit allowed under section 24 by reason of subsection (h) thereof on a monthly basis, or as frequently as the Secretary determines to be administratively feasible, to taxpayers allowed such credit (determined without regard to section 24(h)(5)(A)). (b) Limitation The Secretary may make payments under subsection (a) only to the extent that the total amount of such payments made to any taxpayer during the taxable year does not exceed the amount determined under section 24(h) with respect to such taxpayer (determined without regard to subsections (b) and (f) of such section). Such program shall make reasonable efforts to apply the limitation of section 24(b) with respect to payments made under such program. . (c) Conforming amendments (1) Section 6211(b)(4)(A) of such Code is amended by inserting 24(h), after 24(d), . (2) Section 6402(m) of such Code is amended by inserting or (h) after subsection (d) . (3) The table of sections for chapter 77 of such Code is amended by inserting after the item relating to section 7527 the following new item: Sec. 7527A. Advance payment of young child tax credit. . (4) Section 1324(b)(2) of title 31, United States Code, is amended by inserting 24(h), before 25A, . (d) Effective date (1) In general The amendments made by this section shall apply to taxable years beginning after December 31, 2016. (2) Advance payment program The Secretary of the Treasury, or his designee, shall establish the program described in section 7527A of the Internal Revenue Code of 1986 (as added by this section) not later than such date. 4. Modifications of the child tax credit (a) Refundable portion Clause (i) of section 24(d)(1)(B) of the Internal Revenue Code of 1986 is amended to read as follows: (i) 45 percent of the taxpayer’s earned income (within the meaning of section 32) which is taken into account in computing taxable income