Other Special Studies and Analysis Government Contracts
PSC B599 Service code
Code facts
- Spend category
- Professional Services Management Advisory Services
- Part of
-
-
B
- B5
-
B
- Contract obligations
- $302,502,035 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 | Department of Health and Human Services | $124,731,200 | |
| 2 | Air Force | $67,144,295 | |
| 3 | National Aeronautics and Space Administration | $63,018,975 | |
| 4 | Defense Human Resources Activity | $30,409,556 | |
| 5 | Department of the Army | $27,664,751 | |
| 6 | Department of State | $24,859,463 | |
| 7 | Department of the Navy | $12,359,059 | |
| 8 | Department of Labor | $6,018,285 | |
| 9 | Department of Agriculture | $4,046,153 | |
| 10 | Department of Homeland Security | $3,130,009 |
Top contractors by obligations
| Rank | Contractor | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Research Triangle Institute | $76,757,320 | |
| 2 | Booz Allen Hamilton Inc. | $49,568,945 | |
| 3 | The Rand Corporation | $40,595,347 | |
| 4 | Fors Marsh Group LLC | $30,409,556 | |
| 5 | American Institute In Taiwan | $23,998,144 | |
| 6 | Emory University | $18,830,745 | |
| 7 | Janus Research Group, LLC | $14,393,039 | |
| 8 | The Boeing Company | $11,670,986 | |
| 9 | Lockheed Martin Corp | $7,657,172 | |
| 10 | Mathematica Inc. | $7,509,610 |
See the full FY2025 ranking of PSC B599 contractors, by parent company.
Open contract opportunities
| Notice | Posted | Due |
|---|---|---|
| Injection well failure mode evaluation |
Recent contract awards
Latest 10 of 292 awarded in the last 12 months listed here. See the rest on GovTribe.
Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | $3,773,368 |
| FY2026 | $377,182,736 |
| FY2025 | $302,502,035 |
| FY2024 | $478,208,173 |
| FY2023 | $500,127,688 |
Top NAICS codes by obligations
| Rank | NAICS code | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | 541990 All Other Professional, Scientific, and Technical Services | $90,834,903 | |
| 2 | 541720 Research and Development in the Social Sciences and Humanities | $74,465,738 | |
| 3 | 541330 Engineering Services | $68,252,874 | |
| 4 | 541380 Testing Laboratories and Services | $37,931,762 | |
| 5 | 928120 International Affairs | $23,998,144 | |
| 6 | 541690 Other Scientific and Technical Consulting Services | $20,823,937 | |
| 7 | 336411 Aircraft Manufacturing | $18,761,869 | |
| 8 | 541611 Administrative Management and General Management Consulting Services | $15,222,602 | |
| 9 | 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) | $8,118,626 | |
| 10 | 541512 Computer Systems Design Services | $6,725,020 |
Contract obligations by state
| Rank | Place of performance | Obligated, last 12 months | Share |
|---|---|---|---|
| 1 | Virginia | $93,242,280 | |
| 2 | North Carolina | $64,389,930 | |
| 3 | Texas | $60,826,915 | |
| 4 | California | $47,591,609 | |
| 5 | Maryland | $25,160,342 | |
| 6 | District of Columbia | $13,231,377 | |
| 7 | Georgia | $10,466,859 | |
| 8 | Alaska | $8,163,181 | |
| 9 | Massachusetts | $7,479,299 | |
| 10 | Colorado | $3,477,464 | |
| 11 | New York | $3,388,474 | |
| 12 | Alabama | $3,354,226 | |
| 13 | New Mexico | $2,448,000 | |
| 14 | Michigan | $2,189,189 | |
| 15 | Pennsylvania | $1,497,037 | |
| 16 | Illinois | $1,301,449 | |
| 17 | Rhode Island | $937,720 | |
| 18 | Ohio | $799,196 | |
| 19 | Washington | $596,791 | |
| 20 | Arizona | $491,757 | |
| 21 | Idaho | $474,216 | |
| 22 | Kentucky | $382,068 | |
| 23 | Oregon | $373,174 | |
| 24 | Wyoming | $251,399 | |
| 25 | New Jersey | $213,355 | |
| 26 | Kansas | $151,664 | |
| 27 | Oklahoma | $145,265 | |
| 28 | Arkansas | $140,000 | |
| 29 | Montana | $130,940 | |
| 30 | Utah | $105,922 | |
| 31 | Louisiana | $77,670 | |
| 32 | South Carolina | $59,700 | |
| 33 | Minnesota | $55,155 | |
| 34 | Florida | $40,869 | |
| 35 | West Virginia | $34,567 | |
| 36 | Hawaii | $33,640 | |
| 37 | Mississippi | $20,564 | |
| 38 | Wisconsin | $16,258 | |
| 39 | Puerto Rico | $12,288 |
Show all 39
Shares are of everything obligated under PSC B599 in the last 12 months before deobligations, including work performed abroad or with no place of performance on record.
Quick answers
What is PSC B599?
PSC B599 is Other Special Studies and Analysis, a service code in PSC B, Special Studies/
How many government contracts for other special studies and analysis are there?
1 contract opportunity under PSC B599 is open now, and 35 notices were posted in the last 90 days. Federal agencies awarded 292 contracts under PSC B599 in the last 12 months, obligating $354,986,720.
How much do federal agencies spend under PSC B599?
Federal contracts under PSC B599 obligated $302,502,035 in fiscal year 2025 and $1,661,794,001 in fiscal years 2023 through 2027.
Who are the largest contractors under PSC B599?
The contractors with the most obligated under PSC B599 in fiscal years 2026 and 2027 are Research Triangle Institute ($76,757,320), Booz Allen Hamilton Inc. ($49,568,945) and The Rand Corporation ($40,595,347).
Which agencies buy the most under PSC B599?
The agencies that obligated the most under PSC B599 in fiscal years 2026 and 2027 are Department of Health and Human Services ($124,731,200), Air Force ($67,144,295) and National Aeronautics and Space Administration ($63,018,975).
Which NAICS codes are used with PSC B599?
The NAICS codes with the most obligated under PSC B599 in fiscal years 2026 and 2027 are 541990 All Other Professional, Scientific, and Technical Services; 541720 Research and Development in the Social Sciences and Humanities; and 541330 Engineering Services.
Where is the work under PSC B599 performed?
By place of performance, the states with the most contract obligations under PSC B599 over the last 12 months are Virginia ($93,242,280), North Carolina ($64,389,930) and Texas ($60,826,915).
What is the latest open contract opportunity under PSC B599?
The latest open contract opportunity under PSC B599 is Injection well failure mode evaluation, solicitation, posted October 13, 2026.
On GovTribe
See everything under PSC B599
- Federal contract opportunities, awards and IDVs under this code
- Funding analysis by contractor, agency and set-aside
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