Project Information

Bid Title

Professional Audit Services (FY 2026, 2027 & 2028)

Issuing Agency

O'Fallon city

Location

Illinois

Published Date

Dec 3, 2025

Closing Date

Jan 14, 2026

Government Level

State & Local

Status

Closed

Original Source

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Bid Documents

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Project Description

Bid Title:	Professional Audit Services (FY 2026, 2027 & 2028)
Category:	Bids
Status:	Open

Description: PROFESSIONAL AUDIT SERVICES REQUEST FOR PROPOSALS Proposal #: Finance-2025-0002 DATE ISSUED:  December 3, 2025 CLOSING DATE: January 14, 2026 The City of O’Fallon, Illinois will receive sealed proposals from qualified firms of certified public accountants to audit its financial statements for fiscal years ending April 30, 2026, 2027, and 2028 with the option of auditing the financial statements for fiscal years 2029 and 2030 at the request of the City of O’Fallon. Please read this entire request for proposals and submit your proposal in accordance with these instructions. Proposals improperly prepared and submitted may be rejected. DESCRIPTION OF PROJECT: The City of O’Fallon (“City”), St. Clair County, Illinois, will receive sealed proposals for PROFESSIONAL AUDIT SERVICES until January 14, 2026, 4:30 P.M. at City Hall, 255 South Lincoln, O’Fallon, Illinois 62269. All proposals must be received prior to the date and time shown above. Proposals transmitted by facsimile and electronically submitted will not be accepted. No proposer may withdraw the submitted proposal for a period of thirty (30) days after the actual date of the opening thereof. The City of O’Fallon, Illinois, reserves the right to reject any or all proposals and to waive any informality or technicality in the proposal. All proposals should be addressed to: Finance Department RE: PROFESSIONAL AUDIT SERVICES O’Fallon City Hall 255 South Lincoln Avenue O’Fallon, Illinois 62269 Deadline for submissions is January 14, 2026, at 4:30 P.M. Bids will be evaluated beginning on January 20, 2026. Provisions:      The City of O’Fallon retains the right to reject any or all proposals, to waive technicalities, and accept the proposal which they believe to be the most advantageous to the City. Publication Date/Time: 12/3/2025 7:00 AM Closing Date/Time: 1/14/2026 4:30 PM Contact Person: City of O'Fallon Finance Department - Robin Costello Related Documents: 2026 Audit Services

Attachment Preview

REQUEST FOR PROPOSALS

PROFESSIONAL AUDIT SERVICES

FOR THE FISCAL YEARS ENDING APRIL 30, 2026, 2027, AND 2028

December 1, 2025

CITY OF O’FALLON, ILLINOIS

255 S. Lincoln Ave.

O’Fallon, Illinois 62269

1

O’FALLON, ILLINOIS

PROFESSIONAL AUDIT SERVICES REQUEST FOR PROPOSALS

Proposal #: Finance-2025-0002

DATE ISSUED: December 3, 2025

CLOSING DATE: January 14, 2026

The City of O’Fallon, Illinois will receive sealed proposals from qualified firms of certified public accountants to

audit its financial statements for fiscal years ending April 30, 2026, 2027, and 2028 with the option of auditing

the financial statements for fiscal years 2029 and 2030 at the request of the City of O’Fallon. Please read this

entire request for proposals and submit your proposal in accordance with these instructions. Proposals

improperly prepared and submitted may be rejected.

DESCRIPTION OF PROJECT: The City of O’Fallon (“City”), St. Clair County, Illinois, will receive sealed

proposals for PROFESSIONAL AUDIT SERVICES until January 14, 2026, 4:30 P.M. at City Hall, 255 South

Lincoln, O’Fallon, Illinois 62269. All proposals must be received prior to the date and time shown above.

Proposals transmitted by facsimile and electronically submitted will not be accepted.

No proposer may withdraw the submitted proposal for a period of thirty (30) days after the actual date of the

opening thereof. The City of O’Fallon, Illinois, reserves the right to reject any or all proposals and to waive any

informality or technicality in the proposal.

All proposals should be addressed to:

Finance Department

RE: PROFESSIONAL AUDIT SERVICES

O’Fallon City Hall

255 South Lincoln Avenue

O’Fallon, Illinois 62269

Deadline for submissions is January 14, 2026, at 4:30 P.M. Bids will be evaluated beginning on January 20,

2026.

Provisions: The City of O’Fallon retains the right to reject any or all proposals, to waive technicalities, and

accept the proposal which they believe to be the most advantageous to the City.

2

Section 1 – General Information and Background

A. Purpose and Invitation to Submit Proposal

The City of O’Fallon, Illinois is requesting proposals from qualified firms of certified public accountants to

audit the City’s financial statements for fiscal years ending April 30, 2026, 2027, and 2028. Periodically,

the city requests proposals from qualified firms to assure that the city is getting the best pricing and

services available.

A three-year contract is contemplated with the option of auditing the financial statements for fiscal years

2029 and 2030 at the request of the City of O’Fallon, subject to annual review, and the satisfactory

negotiation of terms, including a price acceptable, to both the City of O’Fallon and the selected firm.

Specifications included in this packet are based on current available information and are not binding. It

will be the responsibility of the successful proposer to verify all information with the City before issuing

the contract and providing services.

B. Description of the City of O’Fallon, Illinois

The City of O’Fallon was incorporated in 1854. The city has a population over 30,000. O’Fallon’s rich

history of trade and industry, and its solid foundation for continued growth and prosperity make it one of

the area’s most popular communities in which to live and work.

The City’s fiscal year begins on May 1 and ends on April 30. City services and functions are divided into

the following departments: Administration, Community Development, Economic Development, EMS,

Fire, Information Technology, Parks and Recreation, Police, Public Works, and Library

(Component Unit).

The City of O’Fallon gained home-rule status in 2006. It is governed by a mayor and a fourteen-member

City Council. The City’s outstanding general obligation bond rating is AA+ from Standard & Poor’s

Investors Service.

Additional information, including the most recent Audited Financial Statement, can be found online at

www.ofallon.org.

Pension Plans

The City of O’Fallon participates in the Illinois Municipal Retirement Fund. The city has defined benefit

pension plans for the police department and fire department.

Budget

The City of O’Fallon prepares its annual budget on a cash basis. The annual expenditure budget for

Fiscal Year 2026 is over $108 million ($28 million in the General Fund, $33 million in the Enterprise

Fund, and $9 million in inter-fund transfers) and can be found on our website at www.ofallon.org.

Magnitude of Finance Operations

The Finance Department is directed by Sandy Evans, Director of Finance, and consists of four (4) full-

time employees. The principal functions performed are as follows:

3

Position

Director of Finance

Accounting Manager

Staff Accountant

Accounting Generalist

Number of Years

with the City

18

12

3

18

The City of O’Fallon has an annual payroll (paid bi-weekly) of approximately $ 20 million, covering

full-time and regular part-time employee positions. The number of seasonal part-time and temporary

employees varies with as many as 200 during the summer.

Federal and State Grants

The City of O’Fallon has at times received grants for various projects. The city has met the

threshold for a single audit in 2023, 2024, and 2025 and is likely to meet this threshold in future

years.

C. Organization

This Request for Proposals is divided into the following parts:

Section 1 – Introduction and Background ...................................................................................... Pg. 3

Section 2 – General Specifications ………….……………………….………………………………… Pg. 5

Section 3 – Response Submission Information ………………………………….……………………. Pg. 9

Section 4 – Proposal Evaluation ……………………………………………………………………...… Pg. 11

Attachment A – Audit Proposal Form ……...….…………………………………...………………...… Pg. 14

Attachment B – Auditor Qualifications Questionnaire ………………………………………………… Pg. 15

D. RFP Schedule:

DATE

December 3, 2025

January 14, 2026

January 22, 2026

January 26, 2026

April 30, 2026

TIME

8:30 A.M.

4:30 P.M.

N/A

5:30 P.M.

N/A

ACTION

Distribution of RFP

Sealed responses due to City Hall

Initial Evaluations Complete

Recommendation of Award to Finance Committee

Implementation Date of Contract

E. Submitted Questions

Requests for clarification or additional information from potential proposers must be submitted via e-mail

to Robin Costello, Accounting Manager at finance@ofallon.org .

4

F. Amendments

The City reserves the right to officially modify or cancel the RFP after issuance. In the event of a

material modification, all known and/or potential proposers will be notified of an amendment to this

RFP.

Section 2 – General Specifications

A. Scope

The City of O’Fallon, Illinois is requesting proposals from qualified firms of certified public accountants to

audit the City’s financial statements for fiscal years ending April 30, 2026, 2027, and 2028. A three-year

contract is contemplated with the option of auditing the financial statements for fiscal years 2029 and

2030 at the request of the City of O’Fallon, subject to annual review, and the satisfactory negotiation of

terms, including a price acceptable, to both the City of O’Fallon and the selected firm.

The City of O’Fallon desires the auditor to express an opinion on the fair presentation of its financial

statements in conformity with accounting principles generally accepted in the United States of America.

The auditor is to provide an opinion on the respective financial position of the governmental activities,

the business-type activities, each major fund, and the aggregate remaining fund information of the City

based on the auditing procedures applied during the audit of the financial statements.

The auditor shall also be responsible for performing certain limited procedures involving required

supplementary information (RSI) required by the Governmental Accounting Standards Board as

mandated by generally accepted auditing standards.

As a part of the contract, the auditors shall also complete on a timely basis the State of Illinois

Comptroller Report.

In addition, the firm shall respond to the reasonable inquiries of successor auditors and allow successor

auditors to review working papers relating to matters of continuing accounting significance.

B. Funds to be Audited

The City of O’Fallon has five major governmental funds, two major business-type activities (water and

sewer) and manages four Tax Increment Financial districts. The following fund types are currently used

in the City’s financial reporting:

Fund Type

Government

Debt Service

Capital

Enterprise

Fiduciary

Component Unit

Special Revenue

# of Funds

9

7

5

4

4

3

19

# Funds Approved Budget

6

7

5

4

4

2

19

5

Commodity Codes

• NAICS 541211Offices of Certified Public Accountants
• NAICS 541219Other Accounting Services
• NAICS 541611Administrative Management and General Management Consulting Services

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