RSM US
RSM US LLP is a professional services firm headquartered in Chicago, Illinois, providing audit, tax, and consulting services primarily to middle-market companies in the United States.[1][2]
The firm traces its origins to 1926, when Ira B. McGladrey established an accounting practice in Cedar Rapids, Iowa, and it operated as McGladrey LLP until rebranding to RSM US in 2015 to align with the global RSM network.[3][4]
As the U.S. member of RSM International, a network spanning over 120 countries with more than 65,000 professionals, RSM US employs over 10,000 people across numerous offices and emphasizes tailored advisory solutions for growth-oriented clients navigating complex regulatory and economic environments.[5][2]
RSM US has achieved recognition as the fifth-largest accounting firm in the U.S. by Accounting Today for 2025 and has been named to Fortune's 100 Best Companies to Work For list, reflecting its focus on employee experience and client service in assurance, risk advisory, and transaction services.[6][7]
Notable controversies include SEC charges in 2019 for auditor independence violations resulting in a $950,000 fine and in 2022 for improper professional conduct in client audits, leading to a $3.75 million penalty and sanctions against senior employees.[8][9][10]