; (C) in paragraph (3)(A)(i), by striking October 1, 2022 and inserting October 1, 2018 ; and (D) in paragraph (5), by striking October 1, 2011 and inserting October 1, 2022 . (2) Amounts available for core program expenditures Section 9503 of the Internal Revenue Code of 1986 is amended by adding at the end the following: (g) Core programs financing rate For purposes of this section— (1) In general Except as provided in paragraph (2)— (A) in the case of gasoline and special motor fuels the tax rate of which is the rate specified in section 4081(a)(2)(A)(i), the core programs financing rate is— (i) after September 30, 2019, and before October 1, 2020, 18.3 cents per gallon, (ii) after September 30, 2020, and before October 1, 2021, 9.6 cents per gallon, (iii) after September 30, 2021, and before October 1, 2022, 6.4 cents per gallon, (iv) after September 30, 2022, and before October 1, 2023, 5.0 cents per gallon, and (v) after September 30, 2023, 3.7 cents per gallon, and (B) in the case of kerosene, diesel fuel, and special motor fuels the tax rate of which is the rate specified in section 4081(a)(2)(A)(iii), the core programs financing rate is— (i) after September 30, 2019, and before October 1, 2020, 24.3 cents per gallon, (ii) after September 30, 2020, and before October 1, 2021, 12.7 cents per gallon, (iii) after September 30, 2021, and before October 1, 2022, 8.5 cents per gallon, (iv) after September 30, 2022, and before October 1, 2023, 6.6 cents per gallon, and (v) after September 30, 2023, 5.0 cents per gallon. (2) Application of rate In the case of fuels used as described in paragraphs (3)(C) and (4)(B) of subsection (c), and aviation fuel described in paragraph (5) of subsection (c), the core programs financing rate is zero. . (c) Termination of Mass Transit Account Section 9503(e) of the Internal Revenue Code of 1986 is amended— (1) in the first sentence of paragraph (2), by inserting , and before October 1, 2018 after March 31, 1983