The Treasury OIG publishes semiannual reports to Congress, detailing its oversight activities, audits, and evaluations for the periods ending March 31 and September 30. These reports, mandated by the Inspector General Act of 1978, highlight significant issues and concerns identified, along with recommendations for corrective actions.

These reports serve as a key mechanism for congressional oversight of the Department of the Treasury's operations and programs. While they do not impose new regulatory requirements, they provide critical insights into potential fraud, waste, and abuse, guiding compliance efforts and internal controls within the department and its associated entities.