| Item | Obligations |
|---|---|
| General Services Administration | $2.5B |
| Department of Defense | $1.8B |
| Department of Health and Human Services | $388M |
| Department of Veterans Affairs | $293M |
| Department of Homeland Security | $122M |
| Department of Commerce | $110M |
| Department of Justice | $88.8M |
| Department of Energy | $60.7M |
| Department of the Interior | $57M |
| National Aeronautics and Space Administration | $55.6M |
General Services Administration is Booz Allen Hamilton's largest federal customer, with $2.5B obligated (44.6% of the company's federal obligations).