Gov. Code, § 11357

(a) The Department of Finance shall adopt and update, as necessary, instructions for inclusion in the State Administrative Manual prescribing the methods that an agency subject to this chapter shall use in making the determinations and the estimates of fiscal or economic impact required by Sections 11346.2, 11346.3, and 11346.5. The instructions shall include, but need not be limited to, the following:

(1) Guidelines governing the types of data or assumptions, or both, that may be used, and the methods that shall be used, to calculate the estimate of the cost or savings to public agencies mandated by the regulation for which the estimate is being prepared.

(2) The types of direct or indirect costs and savings that should be taken into account in preparing the estimate.

(3) The criteria that shall be used in determining whether the cost of a regulation must be funded by the state pursuant to Section 6 of Article XIII B of the California Constitution and Part 7 (commencing with Section 17500) of Division 4.

(4) The format the agency preparing the estimate shall follow in summarizing and reporting its estimate of the cost or savings to state and local agencies, school districts, and in federal funding of state programs that will result from the regulation and its estimate of the economic impact that will result from the regulation.

(b) An action by the Department of Finance to adopt and update, as necessary, instructions to any state or local agency for the preparation, development, or administration of the state budget, or instructions to a state agency on the preparation of an economic impact estimate or assessment of a proposed regulation, including any instructions included in the State Administrative Manual, shall be exempt from this chapter.

(c) The Department of Finance may review an estimate prepared pursuant to this section for content including, but not limited to, the data and assumptions used in its preparation.