Original research

FY2025 federal contract spending by NAICS code, sector and agency

Name: FY2025 Federal Contract Obligations by NAICS Code
Creator: Outrider

The government spent $793B on contracts in FY2025. Here is where $602.0B of it went, across 120 industry codes.

By Outrider Editorial Team

Published August 21, 2026 · USAspending data pulled August 20, 2026

Biggest of the 120 codes, FY2025

336411Aircraft Manufacturing$61.2B
541330Engineering Services$52.3B
541715Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)$48.5B
561210Facilities Support Services$38.3B
336611Ship Building and Repairing$37.2B

See the top 25

Where did the federal government spend its FY2025 contract dollars?

The federal government spent $793B on contracts in FY2025. Aircraft Manufacturing (NAICS 336411) alone took $61.2B, the most of any code in this report. The Department of Defense was the biggest buyer by far, with $396.2B in these 120 codes alone.

The 25 biggest of the 120 NAICS codes, by FY2025 obligations

These 25 codes took $507.6B of the $602.0B. Shares are of that $602.0B.

FY2025 federal contract obligations, USAspending.gov. Pulled August 20, 2026.
Rank	Code	Industry	Obligations	Share
1	336411	Aircraft Manufacturing	$61.2B	10.2%
2	541330	Engineering Services	$52.3B	8.7%
3	541715	Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$48.5B	8.1%
4	561210	Facilities Support Services	$38.3B	6.4%
5	336611	Ship Building and Repairing	$37.2B	6.2%
6	336414	Guided Missile and Space Vehicle Manufacturing	$33.1B	5.5%
7	541512	Computer Systems Design Services	$32.1B	5.3%
8	236220	Commercial and Institutional Building Construction	$30.6B	5.1%
9	541519	Other Computer Related Services	$25.0B	4.2%
10	336413	Other Aircraft Parts and Auxiliary Equipment Manufacturing	$19.8B	3.3%
11	334511	Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing	$18.6B	3.1%
12	336412	Aircraft Engine and Engine Parts Manufacturing	$12.0B	2.0%
13	541990	All Other Professional, Scientific, and Technical Services	$12.0B	2.0%
14	541611	Administrative Management and General Management Consulting Services	$11.3B	1.9%
15	541511	Custom Computer Programming Services	$10.4B	1.7%
16	332993	Ammunition (except Small Arms) Manufacturing	$9.1B	1.5%
17	541712	Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)	$9.1B	1.5%
18	541710	Research and Development in the Physical, Engineering, and Life Sciences	$8.6B	1.4%
19	562910	Remediation Services	$7.0B	1.2%
20	336992	Military Armored Vehicle, Tank, and Tank Component Manufacturing	$6.5B	1.1%
21	561612	Security Guards and Patrol Services	$6.2B	1.0%
22	511210	Software Publishers	$6.0B	1.0%
23	334220	Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing	$4.5B	0.7%
24	339999	All Other Miscellaneous Manufacturing	$4.3B	0.7%
25	562119	Other Waste Collection	$4.0B	0.7%

Spending by sector

Manufacturing and Professional, Scientific, and Technical Services hold 78.8% of the $602.0B between them.

FY2025 federal contract obligations, USAspending.gov, rolled up by 2-digit NAICS sector. The sectors sum to the $602.0B in this report.
Code	Sector	Obligations	Share
31-33	Manufacturing	$246.3B	40.9%
54	Professional, Scientific, and Technical Services	$228.0B	37.9%
56	Administrative and Support and Waste Management and Remediation Services	$68.1B	11.3%
23	Construction	$32.7B	5.4%
51	Information	$17.0B	2.8%
61	Educational Services	$4.6B	0.8%
81	Other Services (except Public Administration)	$3.8B	0.6%
62	Health Care and Social Assistance	$1.2B	0.2%
92	Public Administration	$340.5M	0.1%
42	Wholesale Trade	$88.0M	0.0%

Spending by buying agency

The Department of Defense bought $396.2B in these codes, 65.8% of the dollars in this report.

The 10 biggest of 25 buying agencies.
Agency	Obligations
Department of Defense	$396.2B
Department of Energy	$46.4B
Department of Homeland Security	$25.1B
General Services Administration	$19.0B
Department of Veterans Affairs	$17.9B
National Aeronautics and Space Administration	$17.1B
Department of Health and Human Services	$16.1B
Department of Transportation	$5.7B
Department of State	$5.5B
Department of the Treasury	$4.6B

How this report was built

Source: USAspending.gov prime award contract obligations for FY2025 (October 1, 2024 through September 30, 2025), pulled August 20, 2026. Obligations are net of deobligations. Grants, loans, and direct payments are excluded.
Coverage: The report tracks 120 NAICS codes, $602.0B in total, 75.9% of the $793B government-wide figure reported by GAO's FY2025 contracting snapshot. Codes are stated in NAICS 2022; legacy codes that still carry award dollars keep the title USAspending reports for them.
Agency sums are floors: Summing each code's top five buyers can only undercount an agency, never overcount it, so every agency figure is a minimum.
Rounding: Dollar figures are rounded for display; ranks, shares, and totals are computed on the unrounded data.

Questions about FY2025 contract spending

How much does the federal government spend on contracts?

The federal government obligated $793B on contracts in FY2025 (October 1, 2024 through September 30, 2025), per government-wide USAspending.gov data. The 120 NAICS codes in this report account for $602.0B of it, 75.9% of all contract dollars.

Which NAICS code gets the most federal spending?

Aircraft Manufacturing, NAICS 336411: $61.2B in FY2025, the most of any code in this report and 10.2% of its dollars.

Which federal agency spends the most on contracts?

The Department of Defense, by far: $396.2B in this report's codes alone, 65.8% of the dollars it covers.

Where does this data come from?

USAspending.gov FY2025 prime award contract obligations, pulled August 20, 2026 and classified under NAICS 2022. The government-wide total comes from GAO's FY2025 contracting snapshot, which is built on the same USAspending data.

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