Independent Auditing and Related Services for the County of Orange - fiscal years ending June 30, 2026, 2027, and 2028

The County of Orange, Auditor-Controller (hereinafter referred to as “County”), is soliciting proposals from qualified firms (hereinafter referred to as “Respondents”) for Independent Auditing and Related Services for the County of Orange for the fiscal years ending June 30 of 2026, 2027, and 2028 . Respondents must meet the minimum qualifications and requirements as set forth within the RFP and be capable of providing services identified in the Scope of Work herein.

The proposed schedule below is subject to change. Any changes to the schedule for the RFP process will be issued to all Respondents via addenda on the County's eProcurement Portal.

This is a fully electronic Request for Proposals (RFP). Respondents must submit their proposals online via the County’s online bidding system. Only electronic proposals will be accepted. Facsimile and e-mail proposals will NOT be allowed. For assistance on uploading proposals via County’s eProcurement Portal, please contact procurement-support@opengov.com or https://help.procurement.opengov.com/en/ .

All questions or requests for interpretations must be received within this solicitation by Monday, November 17, 2025 , before 4:00 pm as specified in the solicitation. Respondents are not to contact other County personnel with any questions or clarifications concerning this solicitation. Verbal clarifications or responses will not be considered binding.

Independent Auditing and Related Services for the County of Orange for the fiscal years ending June 30 of 2026, 2027, and 2028

Contractors Duties and Responsibilities:

A. Annual Comprehensive Financial Report (ACFR)

B. Audit of Investment Trust Funds

C. Audit of Pension and Other Postemployment Benefit Trust Fund

D. Single Audit Reports

E. Agreed-Upon Procedures for Attestation of Section 8 Cluster to HUD

F. Management Letter

G. Audit of John Wayne Airport, Orange County

H. Audit of John Wayne Airport Passenger Facility Charge (PFC) Revenue

I. Audit of the OC Waste & Recycling Department (OCWR)

J. Agreed-Upon Procedures of Tobacco Settlement Revenue (TSR) Fund

K. Agreed-Upon Procedures for Appropriations Limit Calculation of Orange County Flood Control District

L. Agreed-Upon Procedures for Appropriations Limit Calculation for Orange County

M. Subsequent Events Review of CalOptima and County’s Basic Financial Statements

N. Subsequent Events Review of OCERS and County’s Basic Financial Statements (Contingent on determination as a fiduciary component unit)

O. Subsequent Events Review of Orange County Housing Finance Trust (OCHFT) and County’s Basic Financial Statements (Contingent on determination as a fiduciary component unit)

P. Annual Financial Audit of the Treasurer’s Schedule of Assets

Q. Training

R. Consent Review (Optional Deliverable)

S. Communications

T. Project Progress

U. Guidance and Advice on New Authoritative Pronouncements

V. Unusual Discoveries/Extra Services

**See the Scope of Work for additional information**