The Single Audit Report, also known as the OMB A-133 audit, is a rigorous, organization-wide audit or examination of an entity that expends $750,000 or more of Federal assistance (commonly known as Federal funds, Federal grants, or Federal awards) received for its operations.
This report is typically performed annually with the objective of providing assurance to the U.S. federal government as to the management and use of such funds by recipients such as states, cities, universities, and non-profit organizations.