NAICS 541690: Other Scientific and Technical Consulting Services
National industry
SBA small business size standard: $19 million in average annual receipts
Code facts
- Part of
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54
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541
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5416
- 54169
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5416
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541
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54
- Contract awards
- 1,389 In the last 12 months
- Contract obligations
- $2,214,498,635 In FY2025
NAICS codes and definitions come from the U.S. Census Bureau, size standards from the SBA and contract spending from SAM.gov/FPDS.
Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | $1,611,871 |
| FY2026 | $1,917,782,867 |
| FY2025 | $2,214,498,635 |
| FY2024 | $2,429,480,094 |
| FY2023 | $2,130,627,872 |
Top contractors by obligations
| Rank | Contractor | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | General Dynamics One Source LLC | $99,731,702 | |
| 2 | Kelly Services, Inc. | $96,218,534 | |
| 3 | Lockheed Martin Corporation | $73,620,672 | |
| 4 | System High Corporation | $58,748,427 | |
| 5 | Gap Solutions, Inc. | $45,730,327 | |
| 6 | Pundir Group, Inc. | $40,508,286 | |
| 7 | Parsons Government Services Inc. | $38,193,269 | |
| 8 | Axle Informatics, LLC | $37,857,296 | |
| 9 | General Dynamics Information Technology, Inc. | $35,023,966 | |
| 10 | Harvard Pilgrim Health Care, Inc. | $32,918,650 |
See the full FY2025 ranking of NAICS 541690 contractors, by parent company.
Top funding agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Department of Health and Human Services | $523,001,344 | |
| 2 | US Agency for International Development | $447,454,150 | |
| 3 | Air Force | $269,958,043 | |
| 4 | Department of the Army | $136,593,644 | |
| 5 | Department of Energy | $61,428,628 | |
| 6 | Department of the Navy | $59,137,287 | |
| 7 | Department of State | $45,296,440 | |
| 8 | General Services Administration | $41,014,220 | |
| 9 | Department of Commerce | $38,762,897 | |
| 10 | Department of Veterans Affairs | $32,222,916 |
Top PSC codes by obligations
| Rank | PSC code | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | R499 Other Professional Services | $698,302,097 | |
| 2 |
R408 Program Management/ |
$524,187,467 | |
| 3 | R425 Engineering and Technical Services | $130,424,504 | |
| 4 | R706 Logistics Support Services | $78,284,520 | |
| 5 | AN41 Health R&D Services; Health Care – Other; Basic Research | $52,450,038 | |
| 6 | B546 Security Studies (Physical and Personal) | $43,839,545 | |
| 7 | Z1AA Maintenance of Office Buildings | $40,309,753 | |
| 8 |
U008 Training/ |
$37,538,411 | |
| 9 |
DA01 IT and Telecom – Business Application/ |
$35,144,824 | |
| 10 | R707 Contract, Procurement, and Acquisition Support Services | $33,542,560 |
Contract obligations by state
| Rank | Place of performance | Obligated, last 12 months | Share |
|---|---|---|---|
| 1 | Virginia | $435,816,376 | |
| 2 | Maryland | $265,560,704 | |
| 3 | Florida | $96,878,020 | |
| 4 | Michigan | $92,472,452 | |
| 5 | District of Columbia | $84,580,200 | |
| 6 | California | $76,732,180 | |
| 7 | Massachusetts | $46,724,187 | |
| 8 | New Jersey | $34,249,456 | |
| 9 | Arizona | $26,234,549 | |
| 10 | Georgia | $25,145,122 | |
| 11 | Colorado | $19,424,524 | |
| 12 | North Carolina | $18,256,670 | |
| 13 | Texas | $18,114,977 | |
| 14 | Oklahoma | $14,638,658 | |
| 15 | Ohio | $13,964,091 | |
| 16 | Hawaii | $11,426,457 | |
| 17 | Pennsylvania | $11,403,459 | |
| 18 | Connecticut | $10,577,960 | |
| 19 | Illinois | $10,359,547 | |
| 20 | Nevada | $7,586,863 | |
| 21 | Washington | $7,575,439 | |
| 22 | Alaska | $7,512,373 | |
| 23 | New Mexico | $7,330,775 | |
| 24 | Mississippi | $6,451,756 | |
| 25 | Alabama | $6,397,639 | |
| 26 | Oregon | $5,290,140 | |
| 27 | Kansas | $5,073,703 | |
| 28 | Missouri | $4,892,558 | |
| 29 | Vermont | $4,372,615 | |
| 30 | New York | $4,005,910 | |
| 31 | Montana | $3,476,923 | |
| 32 | Puerto Rico | $3,261,686 | |
| 33 | Utah | $2,921,668 | |
| 34 | West Virginia | $2,157,273 | |
| 35 | Indiana | $2,147,698 | |
| 36 | Iowa | $1,903,928 | |
| 37 | South Carolina | $1,800,609 | |
| 38 | Wisconsin | $1,171,542 | |
| 39 | Arkansas | $732,172 | |
| 40 | Tennessee | $654,495 | |
| 41 | Idaho | $544,527 | |
| 42 | Delaware | $457,413 | |
| 43 | Maine | $441,318 | |
| 44 | Louisiana | $391,146 | |
| 45 | Nebraska | $300,284 | |
| 46 | North Dakota | $265,070 | |
| 47 | Minnesota | $163,689 | |
| 48 | New Hampshire | $110,494 | |
| 49 | South Dakota | $104,850 | |
| 50 | Wyoming | $65,535 | |
| 51 | Kentucky | $62,876 | |
| 52 | Rhode Island | $58,709 | |
| 53 | U.S. Virgin Islands | $17,245 |
Show all 53
Shares are of everything obligated under NAICS 541690 in the last 12 months before deobligations, including work performed abroad or with no place of performance on record.
Contract opportunities
Show 39 more
Latest 49 of 15,368 listed here. See the rest on GovTribe.
Definition
This industry comprises establishments primarily engaged in providing advice and assistance to businesses and other organizations on scientific and technical issues (except environmental).
Illustrative examples
- Agricultural consulting services
- Agrology consulting services
- Agronomy consulting services
- Biological consulting services
- Chemical consulting services
- Dairy herd consulting services
- Economic consulting services
- Energy consulting services
- Entomology consulting services
- Geochemical consulting services
- Horticultural consulting services
- Hydrology consulting services
- Livestock breeding consulting services
- Motion picture consulting services
- Nuclear energy consulting services
- Physics consulting services
- Radio consulting services
- Safety consulting services
- Security consulting services
Show all 19
Quick answers
What is NAICS 541690?
NAICS 541690 is Other Scientific and Technical Consulting Services, a national industry in NAICS 54, Professional, Scientific, and Technical Services.
What is the NAICS code for radio consulting services?
The NAICS code for radio consulting services is 541690, Other Scientific and Technical Consulting Services.
What is the NAICS code for energy consulting services?
The NAICS code for energy consulting services is 541690, Other Scientific and Technical Consulting Services.
What is the NAICS code for safety consulting services?
The NAICS code for safety consulting services is 541690, Other Scientific and Technical Consulting Services.
How much do federal agencies spend under NAICS 541690?
Federal contracts under NAICS 541690 obligated $2,214,498,635 in fiscal year 2025 and $8,694,001,340 in fiscal years 2023 through 2027.
Who are the largest contractors under NAICS 541690?
The contractors with the most obligated under NAICS 541690 in fiscal years 2026 and 2027 are General Dynamics One Source LLC ($99,731,702); Kelly Services, Inc. ($96,218,534); and Lockheed Martin Corporation ($73,620,672).
Which agencies buy the most under NAICS 541690?
The agencies that obligated the most under NAICS 541690 in fiscal years 2026 and 2027 are Department of Health and Human Services ($523,001,344), US Agency for International Development ($447,454,150) and Air Force ($269,958,043).
Which PSC codes are used with NAICS 541690?
The PSC codes with the most obligated under NAICS 541690 in fiscal years 2026 and 2027 are R499 Other Professional Services, R408 Program Management/
Where is the work under NAICS 541690 performed?
By place of performance, the states with the most contract obligations under NAICS 541690 over the last 12 months are Virginia ($435,816,376), Maryland ($265,560,704) and Florida ($96,878,020).
What is the latest contract opportunity under NAICS 541690?
The latest contract opportunity under NAICS 541690 is Justification and Approval for Other than Full and Open Competition - OHS HFARD NBIC Advisory & Assistance Services, limited / sole source justification, posted October 23, 2026.
On GovTribe
See everything under NAICS 541690
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