subparagraph, the unused renters credit carryover of a State for any calendar year is the excess (if any) of— (I) the unused State renters credit ceiling for the year preceding such year, over (II) the aggregate renters credit dollar amount allocated for such year. (iii) Formula for allocation of unused housing credit carryovers among qualified States The amount allocated under this subparagraph to a qualified State for any calendar year shall be the amount determined by the Secretary to bear the same ratio to the aggregate unused renters credit carryovers of all States for the preceding calendar year as such State’s population for the calendar year bears to the population of all qualified States for the calendar year. For purposes of the preceding sentence, population shall be determined in accordance with section 146(j). (iv) Qualified State For purposes of this subparagraph, the term qualified State means, with respect to a calendar year, any State— (I) which allocated its entire State renters credit ceiling for the preceding calendar year, and (II) for which a request is made (not later than May 1 of the calendar year) to receive an allocation under clause (iii). (E) Application of certain rules For purposes of this paragraph, rules similar to the rules of subparagraphs (E), (F), and (G) of section 42(h)(3) shall apply. (F) Inflation adjustment (i) In general In the case of a calendar year after 2017, the $20,000,000 and $17.50 amounts in subparagraph (C) shall each 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 such calendar year by substituting calendar year 2001 for calendar year 1992 in subparagraph (B) thereof. (ii) Rounding (I) In the case of the $20,000,000 amount, any increase under clause (i) which is not a multiple of $50,000 shall be rounded to the next lowest multiple of $50,000. (II) In the case of the $17.50 amount, any increase under clause (i) which is not a multiple of 50 cents shall be rounded