fiscal year which begins after the date of the determination. . (b) Effective date The amendment made by this section shall take effect on October 1, 2018. 8. Reduction in taxes on gasoline, diesel fuel, kerosene, and special fuels funding Highway Trust Fund (a) Reduction in tax rate (1) In general Section 4081(a)(2)(A) of the Internal Revenue Code of 1986 is amended— (A) in clause (i), by striking 18.3 cents and inserting 3.7 cents