PSC AC31: National Defense R&D Services; Defense-Related Activities; Basic Research
Service code
Code facts
- Spend category
- Research and Development
- Part of
-
-
A
- AC
-
A
- Contract awards
- 51 In the last 12 months
- Contract obligations
- $1,077,818,093 In FY2025
PSC codes and definitions come from the GSA PSC Manual and contract spending from SAM.gov/FPDS.
Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | $0 |
| FY2026 | $965,279,487 |
| FY2025 | $1,077,818,093 |
| FY2024 | $803,170,556 |
| FY2023 | $324,173,499 |
Top contractors by obligations
| Rank | Contractor | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Massachusetts Institute Of Technology | $688,536,097 | |
| 2 | Carnegie Mellon University | $51,325,896 | |
| 3 | Mclaughlin Research Corporation | $23,811,221 | |
| 4 | Envisioneering Inc. | $23,392,510 | |
| 5 | Advanced Technology International | $22,144,749 | |
| 6 | Hypergiant Galactic Systems, Inc. | $13,847,915 | |
| 7 | Lockheed Martin Corporation | $13,379,371 | |
| 8 | Geneva Technologies, Inc. | $12,518,885 | |
| 9 | World Wide Technology LLC | $11,299,302 | |
| 10 | Seed Innovations, LLC | $9,106,659 |
See the full FY2025 ranking of PSC AC31 contractors, by parent company.
Top funding agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Air Force | $660,235,862 | |
| 2 | Department of the Navy | $157,035,661 | |
| 3 | Washington Headquarters Service | $52,113,828 | |
| 4 | Department of the Army | $33,334,992 | |
| 5 | Missile Defense Agency | $31,383,810 | |
| 6 | Defense Advanced Research Projects Agency | $18,024,229 | |
| 7 | Defense Health Agency | $5,578,463 | |
| 8 | Office of the Secretary of Defense | $3,954,486 | |
| 9 | Defense Information Systems Agency | $2,179,295 | |
| 10 | Department of Homeland Security | $701,725 |
Top NAICS codes by obligations
| Rank | NAICS code | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) | $489,727,151 | |
| 2 | 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) | $352,186,090 | |
| 3 | 541330 Engineering Services | $59,270,497 | |
| 4 | 541511 Custom Computer Programming Services | $9,106,659 | |
| 5 | 611310 Colleges, Universities, and Professional Schools | $6,877,110 | |
| 6 | 541714 Research and Development in Biotechnology (except Nanobiotechnology) | $5,318,534 | |
| 7 | 336611 Ship Building and Repairing | $3,796,231 | |
| 8 | 541512 Computer Systems Design Services | $2,179,295 | |
| 9 | 541380 Testing Laboratories and Services | $18,200 | |
| 10 | 332994 Small Arms, Ordnance, and Ordnance Accessories Manufacturing | $10,000 |
Contract obligations by state
| Rank | Place of performance | Obligated, last 12 months | Share |
|---|---|---|---|
| 1 | Massachusetts | $691,386,005 | |
| 2 | Pennsylvania | $63,140,692 | |
| 3 | District of Columbia | $36,909,423 | |
| 4 | Texas | $27,328,808 | |
| 5 | New York | $20,290,977 | |
| 6 | Colorado | $19,664,909 | |
| 7 | Rhode Island | $18,602,292 | |
| 8 | Connecticut | $14,474,139 | |
| 9 | Ohio | $14,414,810 | |
| 10 | Virginia | $11,092,227 | |
| 11 | Washington | $8,067,121 | |
| 12 | Maryland | $7,652,992 | |
| 13 | California | $7,078,462 | |
| 14 | New Jersey | $6,658,577 | |
| 15 | Michigan | $4,125,479 | |
| 16 | Florida | $3,376,168 | |
| 17 | New Mexico | $2,396,972 | |
| 18 | Tennessee | $2,276,971 | |
| 19 | Wisconsin | $1,446,538 | |
| 20 | Maine | $1,234,511 | |
| 21 | Alabama | $1,000,000 | |
| 22 | South Carolina | $954,493 | |
| 23 | Georgia | $878,094 | |
| 24 | Iowa | $20,885 | |
| 25 | Utah | $18,200 |
Show all 25
Shares are of everything obligated under PSC AC31 in the last 12 months before deobligations, including work performed abroad or with no place of performance on record.
Contract opportunities
Show 40 more
Latest 50 of 134 listed here. See the rest on GovTribe.
Quick answers
What is PSC AC31?
PSC AC31 is National Defense R&D Services; Defense-Related Activities; Basic Research, a service code in PSC A, Research and Development.
How much do federal agencies spend under PSC AC31?
Federal contracts under PSC AC31 obligated $1,077,818,093 in fiscal year 2025 and $3,170,441,635 in fiscal years 2023 through 2027.
Who are the largest contractors under PSC AC31?
The contractors with the most obligated under PSC AC31 in fiscal years 2026 and 2027 are Massachusetts Institute Of Technology ($688,536,097), Carnegie Mellon University ($51,325,896) and Mclaughlin Research Corporation ($23,811,221).
Which agencies buy the most under PSC AC31?
The agencies that obligated the most under PSC AC31 in fiscal years 2026 and 2027 are Air Force ($660,235,862), Department of the Navy ($157,035,661) and Washington Headquarters Service ($52,113,828).
Which NAICS codes are used with PSC AC31?
The NAICS codes with the most obligated under PSC AC31 in fiscal years 2026 and 2027 are 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology); 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology); and 541330 Engineering Services.
Where is the work under PSC AC31 performed?
By place of performance, the states with the most contract obligations under PSC AC31 over the last 12 months are Massachusetts ($691,386,005), Pennsylvania ($63,140,692) and the District of Columbia ($36,909,423).
What is the latest contract opportunity under PSC AC31?
The latest contract opportunity under PSC AC31 is Microscopy of units and Profilometry of units, solicitation from Naval Sea Systems Command (Navy), posted July 29, 2026.
On GovTribe
See everything under PSC AC31
- Federal contract opportunities, awards and IDVs under this code
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