OMB Circular A-123

OMB Circular A-123 is a US Office of Management and Budget (OMB) Government circular that defines the management responsibilities for internal financial controls in Federal agencies. It was issued by OMB's Office of Federal Financial Management on 21 December 2004 and addressed to all Federal Chief Financial Officers, Chief Information Officers, and Program Managers. The circular is signed by then-Controller Linda M. Combs.

Circular A-123 is a re-examination of the existing internal control requirements for Federal agencies and was initiated in light of the new internal control requirements for publicly-traded companies contained in the Sarbanes-Oxley Act of 2002. The Circular and the statute it implements, the Federal Managers’ Financial Integrity Act of 1982, are at the center of the existing Federal requirements to improve internal financial controls.