SECTION 1. PURPOSE

This notice announces that the Department of the Treasury (Treasury Department) and the Internal Revenue Service (IRS) intend to propose regulations (forthcoming proposed regulations) addressing the clean fuel production credit determined under § 45Z of the Internal Reve

5 For example, the safe harbor incremental cost of a model year 2023 vehicle is determined by reference to Notice 2023-9, and the safe harbor incremental cost of a model year 2024 vehicle is determined by reference to Notice 2024-5.

February 3, 2025 682 Bulletin No. 2025–6

nue Code (§ 45Z credit), ¹ which applies to eligible transportation fuel produced domestically after December 31, 2024, that is sold by December 31, 2027. In addition to providing background on the § 45Z credit, this notice explains the rules that the Treasury Department and the IRS intend to propose in the forthcoming proposed regulations and requests public comments on the draft text of the forthcoming proposed regulations contained in the appendix to this notice. Notice 202511, this Bulletin, provides additional guidance on fuel emissions rates for purposes of the § 45Z credit and contains the initial emissions rate table described in § 45Z(b) (1)(B)(i).

The Treasury Department and the IRS developed this notice and Notice 2025-11 in consultation with the Department of Energy (DOE), the Environmental Protection Agency (EPA), the United States Department of Agriculture, and other Federal agencies.