OIG operating units work together to carry out the OIG's goals and objectives, and to promote the OIG's core values. OIG staff are located in Washington, DC; Atlanta, Georgia; Dallas, Texas; Chicago, Illinois.

The Office of Audits provides the FDIC with professional audit and related services covering the full range of its statutory and regulatory responsibility, including major programs and activities. These audits are designed to promote economy, efficiency, and effectiveness and to prevent fraud, waste, and abuse in corporate programs and operations. This office ensures the compliance of all OIG audit work with applicable audit standards, including those established by the Comptroller General of the United States. It may also conduct external peer reviews of other OIG offices, according to the cycle established by the PCIE.

The Office of Audits is organized into two primary Directorates: (1) Supervision, Insurance, and Receivership Management Audits and (2) Corporate Management and Security Audits.

The Office of Evaluations evaluates, reviews, studies, or analyzes FDIC programs and activities to provide independent, objective information to facilitate FDIC management decision-making and improve operations. Evaluation projects are conducted in accordance with the PCIE Quality Standards for Inspections. Evaluation projects are generally limited in scope and may be requested by the FDIC Board of Directors, FDIC management, or the Congress.

The Office of Investigations carries out a comprehensive nationwide program for the prevention, detection, and investigation of criminal or otherwise prohibited activity affecting the FDIC and its programs. The Office of Investigations coordinates with the U.S. Department of Justice, the Federal Bureau of Investigation, the Secret Service, the Internal Revenue Service, other OIGs, and state and local law enforcement authorities.

The Office of Management handles the OIG's business activities, including budgets and financial management, strategic planning and performance measurement, risk management, internal controls, contract administration, human resources and training, OIG policy development, and the OIG's information systems and web site.

The Office of Counsel The Office of Counsel provides independent legal services for the OIG that encompasses every facet of OIG operations. The Office of Counsel also handles the OIG’s Congressional Relations function.