Special Studies – Not R&D Government Contracts
PSC B5 Service group
Code facts
- Part of
-
- B
- Codes under it
- 46
- Contract obligations
- $2,998,037,398 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 | $501,927,308 | |
| 2 | Department of Health and Human Services | $348,670,273 | |
| 3 | Department of Homeland Security | $179,139,439 | |
| 4 | Department of Education | $162,946,912 | |
| 5 | Department of the Army | $148,133,590 | |
| 6 | Office of the Secretary of Defense | $126,541,028 | |
| 7 | Department of the Navy | $121,320,869 | |
| 8 | Department of the Interior | $87,438,158 | |
| 9 | National Aeronautics and Space Administration | $75,510,978 | |
| 10 | Department of Veterans Affairs | $68,715,596 |
Top contractors by obligations
| Rank | Contractor | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | The Johns Hopkins University Applied Physics Laboratory LLC | $129,942,628 | |
| 2 | Parsons Government Services Inc. | $124,080,757 | |
| 3 | Booz Allen Hamilton Inc. | $115,556,070 | |
| 4 | Research Triangle Institute | $104,932,403 | |
| 5 | The Rand Corporation | $101,562,755 | |
| 6 | The CNA Corporation | $74,109,922 | |
| 7 | Westat, Inc. | $70,141,977 | |
| 8 | Educational Testing Service | $49,058,726 | |
| 9 | Guidehouse Inc. | $45,224,343 | |
| 10 | Deloitte Consulting LLP | $44,288,126 |
See the full FY2025 ranking of PSC B5 contractors, by parent company.
Open contract opportunities
Show 14 more
Latest 24 of 25 listed here. See the rest on GovTribe.
Recent contract awards
Latest 10 of 1,983 awarded in the last 12 months listed here. See the rest on GovTribe.
Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | $17,374,097 |
| FY2026 | $2,344,166,036 |
| FY2025 | $2,998,037,398 |
| FY2024 | $3,128,828,955 |
| FY2023 | $3,114,201,020 |
Top NAICS codes by obligations
| Rank | NAICS code | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | 541990 All Other Professional, Scientific, and Technical Services | $399,956,423 | |
| 2 | 541330 Engineering Services | $354,907,193 | |
| 3 | 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) | $261,318,250 | |
| 4 | 541720 Research and Development in the Social Sciences and Humanities | $241,372,132 | |
| 5 | 541611 Administrative Management and General Management Consulting Services | $194,742,341 | |
| 6 | 541620 Environmental Consulting Services | $180,949,340 | |
| 7 | 541380 Testing Laboratories and Services | $161,401,667 | |
| 8 | 541690 Other Scientific and Technical Consulting Services | $101,133,573 | |
| 9 | 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services | $54,127,697 | |
| 10 | 562910 Remediation Services | $45,079,867 |
Contract obligations by state
| Rank | Place of performance | Obligated, last 12 months | Share |
|---|---|---|---|
| 1 | Virginia | $608,355,040 | |
| 2 | Maryland | $297,026,547 | |
| 3 | District of Columbia | $291,813,174 | |
| 4 | California | $180,230,730 | |
| 5 | North Carolina | $101,986,306 | |
| 6 | Texas | $91,299,220 | |
| 7 | Georgia | $56,382,095 | |
| 8 | Alabama | $54,525,668 | |
| 9 | Arizona | $51,424,895 | |
| 10 | Illinois | $34,399,779 | |
| 11 | Colorado | $32,335,376 | |
| 12 | Pennsylvania | $32,308,936 | |
| 13 | Massachusetts | $31,371,212 | |
| 14 | Kansas | $29,786,442 | |
| 15 | Florida | $27,631,803 | |
| 16 | New Mexico | $21,623,840 | |
| 17 | Michigan | $20,432,426 | |
| 18 | Wisconsin | $18,419,262 | |
| 19 | Louisiana | $17,220,078 | |
| 20 | Ohio | $16,681,498 | |
| 21 | Washington | $16,557,787 | |
| 22 | Alaska | $14,848,747 | |
| 23 | Mississippi | $13,213,689 | |
| 24 | Oklahoma | $12,651,797 | |
| 25 | New Jersey | $12,169,443 | |
| 26 | Connecticut | $10,968,222 | |
| 27 | New York | $10,140,749 | |
| 28 | New Hampshire | $10,036,040 | |
| 29 | Missouri | $9,356,962 | |
| 30 | Utah | $7,811,280 | |
| 31 | Oregon | $7,571,083 | |
| 32 | Nevada | $7,048,693 | |
| 33 | Minnesota | $4,855,169 | |
| 34 | Tennessee | $2,854,755 | |
| 35 | Hawaii | $2,762,263 | |
| 36 | Montana | $2,078,216 | |
| 37 | Vermont | $1,670,898 | |
| 38 | Idaho | $1,593,102 | |
| 39 | South Dakota | $1,567,620 | |
| 40 | South Carolina | $1,533,378 | |
| 41 | Arkansas | $1,353,200 | |
| 42 | Indiana | $1,266,594 | |
| 43 | Wyoming | $1,218,505 | |
| 44 | Rhode Island | $979,294 | |
| 45 | West Virginia | $886,539 | |
| 46 | North Dakota | $871,049 | |
| 47 | Iowa | $775,483 | |
| 48 | Nebraska | $658,737 | |
| 49 | Puerto Rico | $323,502 | |
| 50 | Maine | $276,239 | |
| 51 | Delaware | $131,585 | |
| 52 | U.S. Virgin Islands | $67,104 |
Show all 52
Shares are of everything obligated under PSC B5 in the last 12 months before deobligations, including work performed abroad or with no place of performance on record.
Codes under B5
Show all 46
Quick answers
What is PSC B5?
PSC B5 is Special Studies – Not R&D, a service group in PSC B, Special Studies/
How many government contracts for special studies – not R&D are there?
25 contract opportunities under PSC B5 are open now, and 368 notices were posted in the last 90 days. Federal agencies awarded 1,983 contracts under PSC B5 in the last 12 months, obligating $2,202,367,634.
What codes are under PSC B5?
PSC B5 has 46 codes under it with their own GovTribe pages, including B502 Air Quality Analysis, B503 Archeological/
How much do federal agencies spend under PSC B5?
Federal contracts under PSC B5 obligated $2,998,037,398 in fiscal year 2025 and $11,602,607,506 in fiscal years 2023 through 2027.
Who are the largest contractors under PSC B5?
The contractors with the most obligated under PSC B5 in fiscal years 2026 and 2027 are The Johns Hopkins University Applied Physics Laboratory LLC ($129,942,628), Parsons Government Services Inc. ($124,080,757) and Booz Allen Hamilton Inc. ($115,556,070).
Which agencies buy the most under PSC B5?
The agencies that obligated the most under PSC B5 in fiscal years 2026 and 2027 are Air Force ($501,927,308), Department of Health and Human Services ($348,670,273) and Department of Homeland Security ($179,139,439).
Which NAICS codes are used with PSC B5?
The NAICS codes with the most obligated under PSC B5 in fiscal years 2026 and 2027 are 541990 All Other Professional, Scientific, and Technical Services; 541330 Engineering Services; and 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology).
Where is the work under PSC B5 performed?
By place of performance, the states with the most contract obligations under PSC B5 over the last 12 months are Virginia ($608,355,040), Maryland ($297,026,547) and the District of Columbia ($291,813,174).
What is the latest open contract opportunity under PSC B5?
The latest open contract opportunity under PSC B5 is Air Service Implementation Planning Phase 2, pre-solicitation from Naval Air Warfare Center (NAVAIR), posted November 10, 2026.
On GovTribe
See everything under PSC B5
- Federal contract opportunities, awards and IDVs under this code
- Funding analysis by contractor, agency and set-aside
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