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Office of the Inspector General


Office of Investigations

The Assistant Inspector General for Investigations (AIG/I) is responsible for the overall investigative and oversight activities of the OIG relating to the programs and operations of the Department of the Treasury, except for the Internal Revenue Service.

The Role of Investigations

The Office of Investigations' (OI) role within the OIG is to conduct investigations and oversight activities relating to programs and operations of the Department and its bureaus. OI is responsible for the prevention, detection, and investigation of fraud, waste, and abuse in connection with Treasury programs and operations.

Types of investigations conducted by OI include allegations of serious employee misconduct, procurement fraud, and other criminal or illegal acts commited by external parties against the Department of the Treasury. OI receives and investigates complaints and information from employees, contractors, members of the public, and Congress alleging criminal or other violations of laws, rules, or regulations.

Organizational Structure

OI is centrally located in Washington, D.C. Reporting directly to the AIG/I is the Deputy Assistant Inspector General for Investigations, who is responsible for the day-to-day operations of OI. The Special Agent in Charge supervises OI investigators who conduct OIG investigations.

The Senior Special Agent Desk Officers (DO) have the primary responsibility of providing liaison to and conducting oversight activities of all of the Department's bureaus, with the exception of the Internal Revenue Service. DOs are also responsible for the review and subsequent referral of all allegations to Treasury bureaus for investigation or management action, as appropriate.

The Complaint Management Unit (CMU) is responsible for the Treasury OIG Hotline. CMU also receives and processes all allegations and correspondence received by OI. CMU manages the Investigation Data Management System (IDMS), which tracks and monitors all activities relating to investigations and information data requests received within OI.


Last Updated: 4/24/2012 10:37 AM
OIG Hotline: Click Here
For information about whistleblowing and reprisal and about your rights and responsibilities as a Treasury employee or contractor, please contact the OIG Whistleblower Ombudsman Program at


The Council of Inspectors General on Financial Oversight was established by the Dodd–Frank Wall Street Reform and Consumer Protection Act (Pub.L. 111-203). Council members share information about their ongoing work, with a focus on concerns that may apply to the broader financial sector and ways to improve financial oversight. The Council is made of nine financial regulatory agency Inspectors General and is chaired by Eric Thorson, Inspector General, U.S. Department of Treasury.