The abbreviations listed below provide a legend to the summary charts which follow:
| ARA | = | Administrative Review and Appeals (formerly EOIR & PA) |
| ATR | = | Antitrust Division |
| BATF | = | Bureau of Alcohol, Tobacco and Firearms |
| CIV | = | Civil Division |
| COPS | = | Community Oriented Policing Services |
| CRM | = | Criminal Division |
| CRS | = | Community Relations Service |
| CRT | = | Civil Rights Division |
| CTF | = | Counterterrorism Fund |
| DEA | = | Drug Enforcement Administration |
| DOJ TOT | = | Total Department of Justice |
| DOJ-OJP | = | Total Department of Justice Less Office of Justice Programs and Violent Crime Reduction Program |
| EOIR | = | Executive Office for Immigration Review |
| ENR-SF | = | Environment and Natural Resources (ENR) Division Less the SUPERFUND Allocation Account |
| ENR+SF | = | ENR Division Plus the SUPERFUND Allocation Account |
| EPA | = | Environmental Protection Agency |
| FBI | = | Federal Bureau of Investigation |
| FCSC | = | Foreign Claim Settlement Commission |
| FEWS | = | Fees and Expenses of Witnesses |
| FPD | = | Federal Prisoner Detention (Includes Cooperative Agreement Program) formerly Support of U.S. Prisoners (SOP) |
| FPS S&E | = | Federal Prison System (Salaries and Expenses) |
| FPS TOT | = | Total Federal Prison System (Salaries and Expenses and Buildings and Facilities |
| FRHB | = | Federal Retiree and Health Benefits Accruals |
| FTE | = | Full Time Equivalent |
| GA | = | General Administration (Department Leadership and Executive Support) |
| GSA | = | General Services Administration |
| HHS | = | Department of Health and Human Services |
| HIDTA | = | High Intensity Drug Trafficking |
| HUD | = | Department of Housing and Urban Development |
| IC | = | Indian Country |
| ICDE | = | Interagency Crime and Drug Enforcement |
| INS | = | Immigration and Naturalization Service |
| IRS CI | = | Crim. Invest. Section of Internal Revenue Service |
| ISI | = | Identification Systems Integration |
| JABS | = | Joint Automated Booking System |
| JB | = | Judicial Branch |
| JMD | = | Justice Management Division (Does not Include Working Capital Fund) |
| NASA | = | National Aeronautics and Space Administration |
| NDIC | = | National Drug Intelligence Center |
| NBC | = | NarrowBand Communications |
| OIG | = | Office of the Inspector General |
| OJP | = | Office of Justice Programs (Earlier Years Data Reflect Law Enforcement Assistance Administration thru Office of Justice Assistance, Research and Statistics) |
| OPM | = | Office of Personnel Management |
| PC | = | U.S. Parole Commission |
| RECTF | = | Radiation Exposure Compensation Trust Fund |
| RISS | = | Regional Information Sharing System |
| SBA | = | Small Business Administration |
| SS | = | Social Security |
| TAX | = | Tax Division |
| TCC | = | Telecommunications Carrier Compliance |
| USA | = | United States Attorneys |
| USCS | = | United States Customs Service |
| USG | = | United States Government, Total |
| USMS | = | United States Marshals Service |
| USSS | = | United States Secret Service |
| UST | = | United States Trustees |
| VCRP | = | Violent Crime Reduction Programs |
| WCF | = | Working Capital Fund |