(a) A member who requests to purchase additional service credit as provided in this chapter and Chapter 14.2 (commencing with Section 22820) shall pay, prior to retirement, all contributions with respect to that service at the contribution rate for additional service credit, adopted by the board as a plan amendment, in effect on the date of the request to purchase additional service credit. If the system is unable to inform the member or beneficiary of the amount required to purchase additional service credit prior to the effective date of the applicable allowance, the member or beneficiary may make the required payment within 30 working days after the date of mailing of the statement of contributions and interest required or the effective date of the appropriate allowance, whichever is later, except as provided in subdivision (i). The payment shall be paid in full before a member or beneficiary receives any adjustment in the appropriate allowance due because of that payment. Contributions shall be made in a lump sum, or in not more than 120 monthly installments, not to exceed ten years. No installment, except the final installment, shall be less than twenty-five dollars ($25).

(b) If the member is employed to perform creditable service subject to coverage by the Defined Benefit Program on the date of the request to purchase additional service credit, the contributions shall be based upon the compensation earnable in the current school year or either of the two immediately preceding school years, whichever is highest.

(c) If the member is not employed to perform creditable service subject to coverage by the Defined Benefit Program on the date of the request to purchase additional service credit, the contributions shall be based upon the compensation earnable in the last school year of credited service or either of the two immediately preceding school years, whichever is highest, and additional regular interest shall be added to the contributions from July 1 of the subsequent year in which the member last performed creditable service subject to coverage by the Defined Benefit Program to 20 days after the date of the request.

(d) The employer may pay the amount required as employer contributions for additional service credited under paragraphs (7), (8), (9), and (10) of subdivision (a) of Section 22803.

(e) The Public Employees’ Retirement System shall transfer the actuarial present value of the assets of a person who makes an election pursuant to paragraph (11) of subdivision (a) of Section 22803.

(f) Regular interest shall be charged on the monthly unpaid balance if the member pays in installments. Regular interest may not be charged or be payable for the period of a delay caused by the system’s inability or failure to determine and inform the member or beneficiary of the amount of contributions and interest that is payable. The period of delay shall commence on the 20th day following the day on which the member or beneficiary who wishes to make payment evidences in writing to the system that he or she is ready, willing, and able to make payment to the system. The period of delay shall cease on the first day of the month following the mailing of notification of contributions and interest payable.

(g) If the payment described in subdivision (a) is not received at the system’s headquarters office within 120 days of the due date, the election pursuant to this section shall be canceled. The member shall receive credit for additional service based on the payments that were made or the member may request a return of his or her payments.

(h) If the election to purchase additional service credit is canceled as described in subdivision (g), the member may, prior to the effective date of his or her retirement, elect to purchase additional service credit pursuant to this section.

(i) The measurement of time within which the purchase of additional service credit described in subdivision (a) shall be made is subject to Section 22337.

(Amended by Stats. 2014, Ch. 755, Sec. 20. (SB 1220) Effective January 1, 2015.)