(a) Except as limited pursuant to Section 22008:

1. (1) All amounts that have been overpaid due to inaccurate information, untimely submission, nonsubmission of information, or on the basis of fraud or intentional misrepresentation by, or on behalf of, a recipient of a benefit, annuity, or refund shall be recovered, as applicable, from the member, participant, former member, former participant, or beneficiary. This paragraph excludes amounts overpaid pursuant to paragraph (2), (3), or (4).
2. (2) All amounts that have been overpaid due to inaccurate information, untimely submission, or nonsubmission of information by an employer that reports directly to the system shall be recovered, as applicable, from that employer.

3. (3) All amounts that have been overpaid due to inaccurate information, untimely submission, or nonsubmission of information by a county superintendent of schools that reports directly to the system on behalf of an employer shall be recovered, as applicable, from that county superintendent of schools. If the overpayment resulted from an error of an employer, the county superintendent of schools may recover the amounts required from that employer pursuant to Section 23012.

   1. (A) If the county superintendent of schools provided notice to, and received consent from, an employer to submit that employer’s monthly report, inclusive of any modifications by the county superintendent of schools on behalf of the employer, an overpayment due to inaccurate information shall be considered an error of that employer.
   2. (B) If the untimely submission or nonsubmission of information was the result of the employer’s untimely submission or nonsubmission of information, the overpayment shall be considered an error of the employer.

4. (4)

   1. (A) All amounts that have been overpaid due to an error by the system shall be recovered, with interest as specified in subparagraph (B), as follows:

      1. (i) Commencing July 1, 2024, 85 percent of this amount resulting from benefit adjustments that take place within the fiscal year ending in the immediately preceding calendar year, the specific amount of which shall be determined by the board, shall be made as a continuous appropriation from the General Fund to the Controller each July 1 for transfer to the Teachers’ Retirement Fund. If July 1 falls on a weekend or holiday, the funds shall be transferred the next business day.
      2. (ii) Commencing July 1, 2024, 15 percent of this amount resulting from benefit adjustments that take place within the fiscal year ending in the immediately preceding calendar year, the specific amount of which shall be determined by the board, shall be recovered from all employers that report directly to the system in amounts proportionate to their share of contributions for that fiscal year, including the contributions of those employers for whom a county superintendent of schools reports. A county superintendent of schools that reports directly to the system on behalf of employers may recover amounts proportionate to each employer’s share of contributions for that fiscal year from those employers pursuant to Section 23012.
   2. (B) The amount to be recovered in accordance with subparagraph (A) shall be calculated to include regular interest from the date of the overpayment to the date of recovery.

(b)

1. (1) An employer shall remit any amount required to be paid to the system pursuant to this section within 30 days of the date of the invoice. If the system does not receive payment within 30 days, the amount owed to the system shall be recalculated to include regular interest from the initial due date.
2. (2) If a payment pursuant to paragraph (1) is not received within 30 days of the date of invoice, the Controller shall, upon the order of the board, reduce subsequent payments from the State School Fund to the county for deposit in the county school service fund by the amount owed or, upon the request of a county superintendent of schools to the county auditor, the Controller shall reduce payments to a school district for deposit in the district general fund by the amount owed. The Controller shall then pay to the system the amount owed for deposit in the Teachers’ Retirement Fund.