Defense Studies Government Contracts
PSC B541 Service code
Code facts
- Spend category
- Professional Services Management Advisory Services
- Part of
-
-
B
- B5
-
B
- Contract obligations
- $586,928,429 In FY2025
PSC codes and definitions come from the GSA PSC Manual and contract spending from SAM.gov/FPDS.
Market summary
Top buying agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Air Force | $215,155,616 | |
| 2 | Office of the Secretary of Defense | $109,754,010 | |
| 3 | Department of the Navy | $84,762,032 | |
| 4 | Department of the Army | $23,457,512 | |
| 5 | Defense Advanced Research Projects Agency | $18,832,002 | |
| 6 | Defense Threat Reduction Agency | $8,541,037 | |
| 7 | Washington Headquarters Service | $1,638,931 | |
| 8 | Missile Defense Agency | $1,164,225 | |
| 9 | Defense Finance and Accounting Service | $123,626 | |
| 10 | US Special Operations Command | $9,000 |
Top contractors by obligations
| Rank | Contractor | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | The Johns Hopkins University Applied Physics Laboratory LLC | $128,443,628 | |
| 2 | Parsons Government Services Inc. | $123,344,658 | |
| 3 | The CNA Corporation | $72,634,922 | |
| 4 | The Rand Corporation | $45,515,421 | |
| 5 | Dzyne Technologies, LLC | $39,518,042 | |
| 6 | Booz Allen Hamilton Inc. | $10,176,901 | |
| 7 | Hart Technologies, Inc. | $9,180,734 | |
| 8 | Lockheed Martin Corp | $8,589,492 | |
| 9 | Leidos, Inc. | $5,711,780 | |
| 10 | A3 Technologies Inc. | $1,964,555 |
See the full FY2025 ranking of PSC B541 contractors, by parent company.
Open contract opportunities
| Notice | Posted | Due |
|---|---|---|
| DARPA's Commercial Solutions Opening (DCSO) for Commercial Strategy |
Recent contract awards
Latest 10 of 164 awarded in the last 12 months listed here. See the rest on GovTribe.
Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | $2,115,777 |
| FY2026 | $461,310,953 |
| FY2025 | $586,928,429 |
| FY2024 | $825,987,084 |
| FY2023 | $737,195,474 |
Top NAICS codes by obligations
| Rank | NAICS code | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) | $219,632,525 | |
| 2 | 541990 All Other Professional, Scientific, and Technical Services | $203,987,157 | |
| 3 | 541330 Engineering Services | $23,119,042 | |
| 4 | 336411 Aircraft Manufacturing | $8,589,492 | |
| 5 | 541611 Administrative Management and General Management Consulting Services | $1,166,021 | |
| 6 | 336414 Guided Missile and Space Vehicle Manufacturing | $949,920 | |
| 7 | 541519 Other Computer Related Services | $945,839 | |
| 8 | 541714 Research and Development in Biotechnology (except Nanobiotechnology) | $699,997 | |
| 9 | 541713 Research and Development in Nanotechnology | $684,009 | |
| 10 | 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services | $653,150 |
Contract obligations by state
| Rank | Place of performance | Obligated, last 12 months | Share |
|---|---|---|---|
| 1 | Virginia | $237,571,264 | |
| 2 | Maryland | $127,967,112 | |
| 3 | California | $76,890,647 | |
| 4 | Georgia | $8,599,491 | |
| 5 | Massachusetts | $3,511,738 | |
| 6 | Colorado | $2,144,976 | |
| 7 | Louisiana | $806,274 | |
| 8 | Michigan | $636,213 | |
| 9 | Missouri | $586,055 | |
| 10 | New Hampshire | $340,000 | |
| 11 | North Carolina | $325,791 | |
| 12 | Washington | $250,000 | |
| 13 | District of Columbia | $141,177 | |
| 14 | Florida | $99,730 | |
| 15 | Connecticut | $50,000 |
Show all 15
Shares are of everything obligated under PSC B541 in the last 12 months before deobligations, including work performed abroad or with no place of performance on record.
Quick answers
What is PSC B541?
PSC B541 is Defense Studies, a service code in PSC B, Special Studies/
How many government contracts for defense studies are there?
1 contract opportunity under PSC B541 is open now, and 2 notices were posted in the last 90 days. Federal agencies awarded 164 contracts under PSC B541 in the last 12 months, obligating $458,520,524.
How much do federal agencies spend under PSC B541?
Federal contracts under PSC B541 obligated $586,928,429 in fiscal year 2025 and $2,613,537,718 in fiscal years 2023 through 2027.
Who are the largest contractors under PSC B541?
The contractors with the most obligated under PSC B541 in fiscal years 2026 and 2027 are The Johns Hopkins University Applied Physics Laboratory LLC ($128,443,628), Parsons Government Services Inc. ($123,344,658) and The CNA Corporation ($72,634,922).
Which agencies buy the most under PSC B541?
The agencies that obligated the most under PSC B541 in fiscal years 2026 and 2027 are Air Force ($215,155,616), Office of the Secretary of Defense ($109,754,010) and Department of the Navy ($84,762,032).
Which NAICS codes are used with PSC B541?
The NAICS codes with the most obligated under PSC B541 in fiscal years 2026 and 2027 are 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology); 541990 All Other Professional, Scientific, and Technical Services; and 541330 Engineering Services.
Where is the work under PSC B541 performed?
By place of performance, the states with the most contract obligations under PSC B541 over the last 12 months are Virginia ($237,571,264), Maryland ($127,967,112) and California ($76,890,647).
What is the latest open contract opportunity under PSC B541?
The latest open contract opportunity under PSC B541 is DARPA's Commercial Solutions Opening (DCSO) for Commercial Strategy, solicitation from Defense Advanced Research Projects Agency, posted May 1, 2026.
On GovTribe
See everything under PSC B541
- Federal contract opportunities, awards and IDVs under this code
- Funding analysis by contractor, agency and set-aside
- Contacts who buy under this code
- Ask GovTribe AI about this code