The Defense Contract Audit Agency (DCAA) provides audit and financial advisory services to Department of Defense (DoD) and other federal entities responsible for acquisition and contract administration. DCAA operates under the authority, direction, and control of the Under Secretary of Defense (Comptroller)/Chief Financial Officer.

Dedicated professionals working together to deliver top-quality audit services to support the Department and the warfighter, and to protect the taxpayer's interest.

Defense Contract Audit Agency (DCAA), while serving the public interest as its primary customer, shall perform all necessary contract audits for the Department of Defense (DoD) and provide accounting and financial advisory services regarding contracts and subcontracts to all DoD components responsible for procurement and contract administration. These services shall be provided in connection with negotiation, administration, and settlement of contracts and subcontracts to ensure taxpayer dollars are spent on fair and reasonable contract prices. DCAA shall provide contract audit services to other Federal agencies as appropriate.

DCAA is committed to the core values of teamwork, excellence, accountability, mutual respect, integrity, and trust.

Prior to 1965, each U.S. military branch had separate contract audit functions and regulations. Contractors and government personnel recognized the need for consistency, and Secretary of Defense Robert S. McNamara instituted "Project 60" in May, 1962, to examine whether it was feasible to centrally manage contract administration and audit activities. An outcome of this study was the decision to establish a single contract audit capability - the "Defense Contract Audit Agency." DCAA began providing audit and financial advisory services to Government contracting officials on July 1, 1965.