Cal. Rev. & Tax. Code § 17570
(b) In the case of any taxpayer required by the enactment of the act adding this subdivision, which act incorporated by reference the amendments made by Section 7003 of the Internal Revenue Service Restructuring and Reform Act of 1998 (Public Law 105-206) to Section 475 of the Internal Revenue Code, for taxable years beginning on or after January 1, 2002, to change its method of accounting on its first taxable year beginning on or after January 1, 2002, then each of the following shall apply for purposes of this part, Part 10.2 (commencing with Section 18401), and Part 11 (commencing with Section 23001):
(c)
(d)
(e)
(f)