Single audit firm directory · Illinois

Grant Thornton LLP

Single audit CPA firm in Chicago, IL

Grant Thornton LLP signed 85 single audits filed with the Federal Audit Clearinghouse for audit years 2022 to 2025 from its offices in Illinois and Oklahoma.

Single audits by audit year

2022: 20
2023: 20
2024: 20
2025: 25

2025 is still coming in, since many audits for that year aren't due until 2026.

Types of organizations audited

Nonprofit: 80
Higher education: 5

States of the organizations audited

Illinois: 52
Michigan: 13
Missouri: 5
Indiana: 5
Minnesota: 4
Oklahoma: 2
Wisconsin: 2
Nebraska: 1
California: 1

Offices that signed these audits

Chicago, IL: 83
Oklahoma City, OK: 2

An office that signed only one of these audits isn't listed.

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Data from the public Federal Audit Clearinghouse, single audits for audit years 2022 to 2025, as of November 11, 2026. Counts are by the office that signed each audit. This directory is not an endorsement of any firm. Firms can request corrections through the RFP notice list page.

Other single audit firms in Illinois →