Cal. Rev. & Tax. Code § 24310.5

(a) For taxable years beginning on or after January 1, 2026, and before January 1, 2031, gross income does not include any payment made pursuant to Section 6417 of the Internal Revenue Code, as added by Public Law 117-169, relating to elective payment of applicable credits. Sections 6417(c)(1)(C) and 6417(c)(1)(D) of the Internal Revenue Code, as added by Public Law 117-169, shall apply.
(b) For taxable years beginning on or after January 1, 2026, and before January 1, 2031, gross income does not include any payment made pursuant to Section 6418 of the Internal Revenue Code, as added by Public Law 117-169, relating to transfer of certain credits.
1. (1) Sections 6418(c)(1)(A) and 6418(c)(1)(B) of the Internal Revenue Code, as added by Public Law 117-169, shall apply.
2. (2) No deduction shall be allowed for any amount paid in consideration of a transfer made as described in Section 6418 of the Internal Revenue Code, as added by Public Law 117-169.
(c) For purposes of this section, “payment made pursuant to Section 6418 of the Internal Revenue Code” includes the value of a credit received by a transferee pursuant to Section 6418 of the Internal Revenue Code, as added by Public Law 117-169.
(d) This section shall remain in effect only until December 1, 2031, and as of that date is repealed.