assistance under title XIX of such Act (or a waiver of the State plan approved under section 1115) who is covered, or whose spouse or dependent (as defined in section 152) is covered, by the Medicare Transition plan established under section 1002(a) of the Medicare for All Act of 2017 for all months in the taxable year, subparagraphs (A) and (B) shall be applied by substituting 0 percent for 100 percent each place it appears. . (B) Premium assistance amounts for taxpayers enrolled in Medicare Transition plan (i) In general Subparagraph (A) of section 36B(b)(3) of such Code is amended— (I) by redesignating clause (ii) as clause (iii), (II) by striking clause (ii) in clause (i) and inserting clauses (ii) and (iii) , and (III) by inserting after clause (i) the following new clause: (ii) Special rules for taxpayers enrolled in Medicare Transition plan In the case of a taxpayer who is covered, or whose spouse or dependent (as defined in section 152) is covered, by the Medicare Transition plan established under section 1002(a) of the Medicare for All Act of 2017 for all months in the taxable year, the applicable percentage for any taxable year shall be determined in the same manner as under clause (i), except that the following table shall apply in lieu of the table contained in such clause: In the case of household income (expressed as a percent of poverty line) within the following income tier: The initial premium percentage is— The final premium percentage is— Up to 100% 2% 2% 100% up to 138% 2.04% 2.04% 138% up to 150% 3.06% 4.08% 150% and above 4.08% 5%. . (ii) Conforming amendment Subclause (I) of clause (iii) of section 36B(b)(3) of such Code, as redesignated by subparagraph (A)(i), is amended by inserting , and determined after the application of clause (ii) after after application of this clause . (2) Cost-sharing subsidies Subsection (b) of section 1402 of the Patient Protection and Affordable Care Act ( 42 U.S.C. 18071(b) ) is amended— (A) by inserting , or in the Medicare Transition plan established under