California Code, Education Code - EDC § 25005

(a) Prior to July 1 of the initial plan year, and prior to the beginning of each plan year thereafter, the board shall adopt a plan amendment with respect to the Defined Benefit Supplement Program to declare the rate at which interest shall be credited to Defined Benefit Supplement accounts for the following plan year.

(b) The minimum interest rate declared annually by the board shall be in accordance with applicable federal laws and related regulations and shall not be less than the rate at which interest is credited under the Defined Benefit Program.

(c) Interest shall be credited to Defined Benefit Supplement accounts and shall be computed at the minimum interest rate on the balance of credits in a member's account and shall be compounded daily.

(d) Credited interest shall not be applied to the balance of credits in a member's Defined Benefit Supplement account that has been transferred to the Annuitant Reserve.