Professional Services Government Contracts
PSC R4 Service group
Code facts
- Part of
-
- R
- Codes under it
- 33
- Contract obligations
- $77,064,140,057 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 | $17,420,247,571 | |
| 2 | Department of the Army | $10,129,502,110 | |
| 3 | Department of the Navy | $8,510,552,446 | |
| 4 | Department of Health and Human Services | $7,162,187,083 | |
| 5 | Department of Homeland Security | $4,529,209,137 | |
| 6 | Department of Veterans Affairs | $3,049,573,239 | |
| 7 | Department of Energy | $2,519,636,479 | |
| 8 | Department of Transportation | $2,349,947,906 | |
| 9 | Department of State | $1,958,322,498 | |
| 10 | Department of Justice | $1,626,724,733 |
Top contractors by obligations
| Rank | Contractor | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Booz Allen Hamilton Inc. | $2,841,728,153 | |
| 2 | The Boeing Company | $1,693,494,295 | |
| 3 | Science Applications International Corporation | $1,542,119,255 | |
| 4 | Savannah River Mission Completion, LLC | $1,124,881,785 | |
| 5 | HII Mission Technologies Corp | $1,103,579,988 | |
| 6 | Deloitte Consulting LLP | $1,099,105,213 | |
| 7 | Caci, Inc. - Federal | $1,066,842,780 | |
| 8 | General Atomics Aeronautical Systems, Inc. | $1,014,782,081 | |
| 9 | The Aerospace Corporation | $1,003,558,042 | |
| 10 | Accenture Federal Services LLC | $766,567,339 |
See the full FY2025 ranking of PSC R4 contractors, by parent company.
Open contract opportunities
Show 15 more
Latest 25 of 177 listed here. See the rest on GovTribe.
Recent contract awards
| Award | Awarded | Obligated |
|---|---|---|
| Leasing acquisition services - 6CA1394 | $0 | |
| New to award for INL/EA for vietnamese tour NOV 10- 20, 2026. | $44,553 | |
| Fan, circulating, high velocity, multipurposemsp-369 | $1,570 | |
| Letter and numeral | $2,148 | |
| Index sheet set, LOO | $64 | |
| Basket, wastepaper | $35 | |
| Tape, pressure sensi | $158 | |
| Protector, document | $54 | |
| Folder, file | $25 | |
| Pen, ball-point | $346 |
Latest 10 of 71,209 awarded in the last 12 months listed here. See the rest on GovTribe.
Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | $962,277,782 |
| FY2026 | $70,218,049,898 |
| FY2025 | $77,064,140,057 |
| FY2024 | $89,265,657,805 |
| FY2023 | $82,607,659,220 |
Top NAICS codes by obligations
| Rank | NAICS code | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | 541330 Engineering Services | $20,939,638,697 | |
| 2 | 541611 Administrative Management and General Management Consulting Services | $6,579,276,996 | |
| 3 | 541512 Computer Systems Design Services | $5,231,089,437 | |
| 4 | 541990 All Other Professional, Scientific, and Technical Services | $5,134,269,776 | |
| 5 | 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) | $5,024,638,323 | |
| 6 | 336411 Aircraft Manufacturing | $2,661,946,735 | |
| 7 | 541519 Other Computer Related Services | $1,975,453,760 | |
| 8 | 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) | $1,898,294,898 | |
| 9 | 541690 Other Scientific and Technical Consulting Services | $1,461,295,454 | |
| 10 | 541511 Custom Computer Programming Services | $1,437,689,868 |
Contract obligations by state
| Rank | Place of performance | Obligated, last 12 months | Share |
|---|---|---|---|
| 1 | Virginia | $20,101,327,274 | |
| 2 | District of Columbia | $6,678,609,188 | |
| 3 | Maryland | $6,309,219,906 | |
| 4 | California | $5,823,386,575 | |
| 5 | Florida | $2,908,812,404 | |
| 6 | Texas | $2,693,740,926 | |
| 7 | Colorado | $2,590,948,612 | |
| 8 | Alabama | $2,512,262,809 | |
| 9 | Massachusetts | $1,780,296,480 | |
| 10 | Georgia | $1,654,603,519 | |
| 11 | South Carolina | $1,627,357,906 | |
| 12 | Oklahoma | $913,184,034 | |
| 13 | North Carolina | $895,581,930 | |
| 14 | Tennessee | $849,937,693 | |
| 15 | Ohio | $749,735,111 | |
| 16 | New Jersey | $726,903,716 | |
| 17 | Arizona | $676,116,052 | |
| 18 | Pennsylvania | $630,622,014 | |
| 19 | Nevada | $596,371,215 | |
| 20 | Indiana | $591,803,517 | |
| 21 | New York | $561,352,260 | |
| 22 | Michigan | $516,175,556 | |
| 23 | Utah | $450,269,653 | |
| 24 | Hawaii | $411,444,497 | |
| 25 | West Virginia | $409,552,649 | |
| 26 | Illinois | $376,373,264 | |
| 27 | Alaska | $371,295,807 | |
| 28 | New Mexico | $327,925,991 | |
| 29 | Kentucky | $247,944,278 | |
| 30 | New Hampshire | $241,025,528 | |
| 31 | Missouri | $211,642,141 | |
| 32 | Washington | $190,822,520 | |
| 33 | Iowa | $153,500,138 | |
| 34 | Nebraska | $126,797,042 | |
| 35 | Louisiana | $106,594,301 | |
| 36 | Wisconsin | $105,894,364 | |
| 37 | Connecticut | $101,463,494 | |
| 38 | Vermont | $84,660,815 | |
| 39 | Mississippi | $62,723,033 | |
| 40 | Kansas | $62,722,145 | |
| 41 | Oregon | $60,707,936 | |
| 42 | Idaho | $57,914,250 | |
| 43 | South Dakota | $56,415,066 | |
| 44 | Minnesota | $55,419,059 | |
| 45 | Puerto Rico | $22,547,594 | |
| 46 | Rhode Island | $19,766,966 | |
| 47 | Montana | $14,013,015 | |
| 48 | Maine | $11,897,160 | |
| 49 | North Dakota | $11,855,554 | |
| 50 | Arkansas | $11,554,367 | |
| 51 | Delaware | $7,286,305 | |
| 52 | Guam | $6,126,485 | |
| 53 | Wyoming | $4,173,343 | |
| 54 | Northern Mariana Islands | $2,691,016 | |
| 55 | American Samoa | $928,000 | |
| 56 | U.S. Virgin Islands | $684,715 |
Show all 56
Shares are of everything obligated under PSC R4 in the last 12 months before deobligations, including work performed abroad or with no place of performance on record.
Codes under R4
Show all 33
Quick answers
What is PSC R4?
PSC R4 is Professional Services, a service group in PSC R, Support Services (Professional, Administrative, Management).
How many government contracts for professional services are there?
177 contract opportunities under PSC R4 are open now, and 1,165 notices were posted in the last 90 days. Federal agencies awarded 71,209 contracts under PSC R4 in the last 12 months, obligating $68,978,909,759.
What codes are under PSC R4?
PSC R4 has 33 codes under it with their own GovTribe pages, including R401 Personal Care Services (includes such services as barber and beauty shop, shoe repairs, tailoring, etc.); R402 Real Estate Brokerage Services; and R403 Real Estate Brokerage Services.
How much do federal agencies spend under PSC R4?
Federal contracts under PSC R4 obligated $77,064,140,057 in fiscal year 2025 and $320,117,784,762 in fiscal years 2023 through 2027.
Who are the largest contractors under PSC R4?
The contractors with the most obligated under PSC R4 in fiscal years 2026 and 2027 are Booz Allen Hamilton Inc. ($2,841,728,153), The Boeing Company ($1,693,494,295) and Science Applications International Corporation ($1,542,119,255).
Which agencies buy the most under PSC R4?
The agencies that obligated the most under PSC R4 in fiscal years 2026 and 2027 are Air Force ($17,420,247,571), Department of the Army ($10,129,502,110) and Department of the Navy ($8,510,552,446).
Which NAICS codes are used with PSC R4?
The NAICS codes with the most obligated under PSC R4 in fiscal years 2026 and 2027 are 541330 Engineering Services, 541611 Administrative Management and General Management Consulting Services and 541512 Computer Systems Design Services.
Where is the work under PSC R4 performed?
By place of performance, the states with the most contract obligations under PSC R4 over the last 12 months are Virginia ($20,101,327,274), the District of Columbia ($6,678,609,188) and Maryland ($6,309,219,906).
What is the latest open contract opportunity under PSC R4?
The latest open contract opportunity under PSC R4 is Keyport Infrastructure Security Support Services Solicitation, solicitation from Naval Sea Systems Command (Navy), posted November 10, 2026.
On GovTribe
See everything under PSC R4
- 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