(A)(ii) thereof. Any increase under the preceding sentence shall be rounded to the nearest 0.1 cents. . (d) Diesel-Water fuel emulsion Section 4081(a)(2)(D) of such Code is amended by striking 19.7 cents for 24.3 cents and inserting a rate equal to 71 percent of the rate in effect under such subparagraph (without regard to this subparagraph) . (e) Termination Section 4081(d)(1) of such Code is amended by striking September 30, 2022 and inserting December 31, 2029 . (f) Allocation in accounts in highway trust fund (1) In general Section 9503(e)(2)(A) of the Internal Revenue Code of 1986 is amended to read as follows: (A) except as otherwise provided in this sentence— (i) 2.86 cents per gallon with respect to taxes imposed during calendar years before 2020, (ii) 3.86 cents per gallon with respect to taxes imposed during calendar year 2020, (iii) 4.86 cents per gallon with respect to taxes imposed during calendar year 2021, (iv) 5.86 cents per gallon with respect to taxes imposed during calendar year 2022, (v) 6.86 cents per gallon with respect to taxes imposed during calendar year 2023, and (vi) 7.86 center per gallon with respect to taxes imposed after calendar year 2023, . (2) Adjustment for inflation Section 9503(e) of the Internal Revenue Code of 1986 is amended by adding at the end the following new paragraph: (6) Adjustment for inflation In the case of any calendar year beginning after 2024, the rate of tax contained in paragraph (2)(A) shall be increased by an amount equal to— (A) such rate, multiplied by (B) the cost of living adjustment determined under section 1(f)(3) for the calendar year, determined by substituting calendar year 2023 for calendar year 2016 in subparagraph (A)(ii) thereof. Any increase under the preceding sentence shall be rounded to the nearest 0.1 cents. . (g) Effective date The amendments made by this section shall apply to fuel removed, entered, or sold after December 31, 2018. 4. Floor stocks tax (a) Imposition of tax In the case of taxed fuel to which a qualified person holds