(a) Member contributions pursuant to Sections 22901, 22901.3, and 22901.7, employer contributions pursuant to Section 22903 or 22904, and member contributions made by an employer pursuant to Section 22909 shall be credited to the member’s individual account under the Defined Benefit Program or the Defined Benefit Supplement Program, whichever is applicable pursuant to the provisions of this part.

(b) Except as provided in subdivision (e), member and employer contributions, exclusive of contributions pursuant to Sections 22901.7, 22950.5, and 22951, on a member’s compensation under the following circumstances shall be credited to the member’s Defined Benefit Supplement account:

(1) Compensation for creditable service that exceeds one year in a school year shall be credited effective on the July 1 immediately following the period for which the compensation is earned.

(2) Compensation that is determined by the system to have been paid to enhance a member’s benefits pursuant to subdivision (b) of Section 22119.2 or to not reflect sound principles that support the integrity of the retirement fund pursuant to subdivision (f) of Section 22119.2 shall be credited effective as of the earliest day contributions are due in the office pursuant to Section 23002.

(3) Compensation that is paid for a limited number of times as specified by law, a collective bargaining agreement, or an employment agreement shall be credited effective as of the earliest day contributions are due in the office pursuant to Section 23002.

(c) A member shall not make voluntary pretax or posttax contributions under the Defined Benefit Supplement Program nor may a member redeposit amounts previously distributed based on the balance in the member’s Defined Benefit Supplement account.

(d) Any contributions on compensation that is creditable to the Defined Benefit Supplement account shall be limited to the contributions made pursuant to Sections 22901, 22901.3, 22950, and 22951. Any excess member contributions, as determined by the system, shall be returned to the member through the employer and any excess employer contributions shall be returned to the employer.

(e) Paragraphs (2) and (3) of subdivision (b) shall not apply to a member subject to the California Public Employees’ Pension Reform Act of 2013.

(f) This section shall become operative on July 1, 2018.

(Repealed (in Sec. 24) and added by Stats. 2016, Ch. 218, Sec. 25. (SB 1352) Effective January 1, 2017. Section operative July 1, 2018, by its own provisions.)