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 year 2017, (ii) 3.86 cents per gallon with respect to taxes imposed during calendar year 2018, (iii) 4.86 cents per gallon with respect to taxes imposed during calendar year 2019, and (iv) 5.86 cents per gallon with respect to taxes imposed after calendar year 2019, . (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 2019, the rate of tax contained in paragraph (2)(A)(iv) 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 2018 for calendar year 1992 in subparagraph (B) 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 fuels or liquids removed, entered, or sold after December 31, 2017. 4. Floor stocks tax (a) Imposition of tax In the case of any taxable liquid which is held on the floor stocks tax date by any person, there is hereby imposed a floor stocks tax equal to the excess of the tax which would be imposed on such liquid under section 4041 or 4081 of the Internal Revenue Code of 1986 had the taxable event occurred on the floor stocks tax date over the tax paid under any such section on such liquid. (b) Liability for tax and method of payment (1) Liability for tax A person holding a liquid on the floor stocks tax date to which the tax imposed by subsection (a) applies shall be liable for such tax. (2) Method of payment The tax imposed by subsection (a) shall be paid in such manner as the Secretary shall prescribe. (3) Time of payment The tax imposed by subsection (a) shall be paid on or before the date which is 6 months after the floor