Shares of FY2025 national defense outlays; total is US$916.1bn.
United States national defense outlays are split by OMB subfunction for FY2025. The composition uses three subfunctions, with each segment measured as a share of the US$916.1 billion national-defense total. DoD military outlays accounted for 94.8%, or US$868.4 billion. Atomic energy defense activities accounted for 4.0%, and other defense-related activities accounted for 1.2%.
| Rank | Entry | Value | Period |
|---|---|---|---|
| 1 | DoD military | 94.8% | FY2025 |
| 2 | Atomic energy | 4.0% | FY2025 |
| 3 | Other defense | 1.2% | FY2025 |
Source 1: U.S. Office of Management and Budget
Publisher: U.S. Office of Management and Budget
Dataset/table: Historical table index
Units: current US$
Date checked: 2026-05-26
Evidence: Provides the official Historical Tables source family and Table 3.2 link.
Source 2: U.S. Office of Management and Budget
Publisher: U.S. Office of Management and Budget
Dataset/table: Table 3.2
Units: millions of current US$
Date checked: 2026-05-26
Evidence: Provides FY2025 national defense subfunction outlays and the total national defense outlay row.
The OMB table uses federal budget function and subfunction categories, not NATO or SIPRI military-expenditure methodology.
Extract FY2025 values from OMB Historical Table 3.2 and divide millions by 1,000 to show current US$ billions.
All rows use the same OMB table, same fiscal year and same current-dollar unit.
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