California Code, Revenue and Taxation Code - RTC § 61030

(a) The Franchise Tax Board may, in consultation with the Exchange, adopt regulations that are necessary and appropriate to implement this part.

(b) It is the intent of the Legislature that, in construing this part, the regulations promulgated by under  1Section 5000A of the Internal Revenue Code 2 as of December 15, 2017, notwithstanding the specified date in paragraph (1) of subdivision (a) of Section 17024.5, shall apply to the extent that those regulations do not conflict with this part or regulations promulgated by the Franchise Tax Board pursuant to subdivision (a) in consultation with the Exchange.

(c) Until January 1, 2022, the Administrative Procedure Act (Chapter 3.5 (commencing with Section 11340) of Part 1 of Division 3 of Title 2 of the Government Code) shall not apply to any regulation, standard, criterion, procedure, determination, rule, notice, guideline, or any other guidance established or issued by the Franchise Tax Board pursuant to this part.