Industries › NAICS 541690
Industry · NAICS 541690 · sector 54 Professional, scientific and technical services
Other Scientific and Technical Consulting Services
Federal contract obligations classified under NAICS 541690, the organisations that win them and the agencies that award them.
USAspending caveat. Figures are obligations reported by federal agencies to USAspending.gov, not payments. In USAspending's words: "An outlay occurs when federal money is actually paid out, not just promised to be paid ('obligated')." "Every agency has a Senior Accountable Official who must officially certify that the quarterly financial data submitted by their agency is accurate and complete." "If there are any discrepancies in procurement data, FPDS is the authoritative source." Contract data for the Department of Defense and the U.S. Army Corps of Engineers is published with a 90-day delay. Data loaded 30 Sep 2026.
Federal agencies obligated $1.9B in contracts classified under NAICS 541690, Other Scientific and Technical Consulting Services, in FY2026, and $8.6B over the five fiscal years since FY2023; the industry ranks 47 of 526 on this site.
Obligations were down 11% on FY2025 ($2.2B), with $0 so far in FY2027.
The largest recipient organisations over FY2022–FY2025 were Kelly Services, Inc. ($703M), Lockheed Martin Corporation ($278M) and Parsons Government Services Inc. ($220M).
By place of performance, the most money went to VA, MD and MI.
Contract obligations by fiscal year
Compared with the largest industry FY2026
| Measure | This industry | Aircraft Manufacturing | All contracts |
|---|---|---|---|
| Contract obligations, FY2026 | $1.9B | $45B | $716B |
| Five-year total | $8.6B | $211B | $3.0T |
| Share of all contract obligations, five years | 0.3% | 7.1% | 100% |
Top contractors obligations, FY2022–FY2025
| # | Organisation | Obligations |
|---|---|---|
| 1 | Kelly Services, Inc. | $703M |
| 2 | Lockheed Martin Corporation | $278M |
| 3 | Parsons Government Services Inc. | $220M |
| 4 | System High Corporation | $183M |
| 5 | Mantech Advanced Systems International, Inc. | $163M |
| 6 | Chemonics International, Inc. | $162M |
| 7 | Unwin Co | $152M |
| 8 | General Dynamics One Source LLC | $145M |
| 9 | General Dynamics Information Technology, Inc. | $141M |
| 10 | Axle Informatics, LLC | $136M |
| 11 | Leidos, Inc. | $123M |
| 12 | Michael Stapleton Associates, LTD. | $122M |
| 13 | Palladium International LLC | $114M |
| 14 | Raytheon Company | $102M |
| 15 | RMC 2021 LLC | $101M |
| 16 | Research Triangle Institute | $100M |
| 17 | Gap Solutions, Inc. | $97M |
| 18 | Dependable Global Solutions, LLC | $95M |
| 19 | National Academy of Sciences | $89M |
| 20 | Janus Research Group, LLC | $89M |
| 21 | Booz Allen Hamilton Inc | $87M |
| 22 | Essex Management LLC | $82M |
| 23 | PAE Government Services, Inc. | $77M |
| 24 | JP Systems, Inc. | $75M |
| 25 | Yale New Haven Health Services Corporation | $73M |
$618M among the top 40 went to recipients not shown.
Buying agencies $1.0M+ awards
Where the work is performed
Largest awards since FY2023
| Recipient | Awarding agency | Type | Award value | Begun | Place | Record |
|---|---|---|---|---|---|---|
| Recipient not shown | Agency for International Development | ContractDefinitive Contract | $897M | 31 Mar 2024 | — | USAspending |
| Recipient not shown | Agency for International Development | ContractDefinitive Contract | $98M | 30 Mar 2024 | — | USAspending |
| Parsons Government Services Inc. | Department of DefenseDepartment of the Air Force | ContractDelivery Order | $77M | 27 Mar 2025 | — | USAspending |
| Parsons Government Services Inc. | Department of DefenseDepartment of the Air Force | ContractDelivery Order | $66M | 29 Sep 2025 | — | USAspending |
| Research Triangle Institute | Agency for International Development | ContractDefinitive Contract | $48M | 15 Jun 2023 | — | USAspending |
| General Dynamics One Source LLC | Department of DefenseDepartment of the Air Force | ContractDelivery Order | $43M | 25 Feb 2025 | VA | USAspending |
| Parsons Government Services Inc. | Department of DefenseDepartment of the Air Force | ContractDelivery Order | $41M | 3 Feb 2023 | — | USAspending |
| Unwin Co | Department of Energy | ContractDefinitive Contract | $37M | 17 Feb 2026 | DC | USAspending |
| National Opinion Research Center | Department of Health and Human ServicesOffice of the Assistant Secretary for Financial Resources | ContractDelivery Order | $34M | 13 Feb 2023 | MD | USAspending |
| Harvard Pilgrim Health Care, Inc. | Department of Health and Human ServicesFood and Drug Administration | ContractDefinitive Contract | $33M | 26 Mar 2026 | MA | USAspending |
Other industries in sector 54: Professional, scientific and technical services
- 541330 Engineering Services $197B
- 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) $181B
- 541512 Computer Systems Design Services $127B
- 541519 Other Computer Related Services $99B
- 541990 All Other Professional, Scientific, and Technical Services $52B
- 541611 Administrative Management and General Management Consulting Services $50B
- 541511 Custom Computer Programming Services $43B
- 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) $37B
- 541710 Research and Development in the Physical, Engineering, and Life Sciences $37B
- 541513 Computer Facilities Management Services $13B
- 541714 Research and Development in Biotechnology (except Nanobiotechnology) $13B
- 541614 Process, Physical Distribution, and Logistics Consulting Services $12B
- 541810 Advertising Agencies $6.1B
- 541620 Environmental Consulting Services $5.2B
- 541211 Offices of Certified Public Accountants $4.8B
- 541711 Research and Development in Biotechnology $4.6B
- 541310 Architectural Services $4.1B
- 541720 Research and Development in the Social Sciences and Humanities $3.9B
- 541612 Human Resources Consulting Services $3.4B
- 541618 Other Management Consulting Services $3.2B
- 541219 Other Accounting Services $3.1B
- 541380 Testing Laboratories and Services $2.4B
- 541199 All Other Legal Services $2.3B
- 541930 Translation and Interpretation Services $1.6B
Questions and answers
How much does the federal government spend on NAICS 541690?
$1.9B in contract obligations classified under Other Scientific and Technical Consulting Services in FY2026, $8.6B over the five fiscal years since FY2023. Obligations are commitments, not payments.
Who are the top contractors in Other Scientific and Technical Consulting Services?
Kelly Services, Inc. ($703M), Lockheed Martin Corporation ($278M), Parsons Government Services Inc. ($220M), System High Corporation ($183M), Mantech Advanced Systems International, Inc. ($163M), by contract obligations over FY2022–FY2025.
Which agencies buy in this industry?
By the value of $1.0M-plus contracts since FY2023: Department of Health and Human Services ($1.4B), Department of Defense ($1.3B), Agency for International Development ($1.2B), Department of Homeland Security ($111M), Department of the Interior ($109M).
What is a NAICS code?
In USAspending's words: "NAICS stands for the North American Industrial Classification System. This 6-digit code tells you what industry the work falls into. Each contract record has a NAICS code." Assistance awards (grants, loans, direct payments) carry no NAICS code and are not counted here.
Provenance
Source: USAspending.gov API v2, spending by category (NAICS) by fiscal year, recipient cross-tabulation for FY2022–FY2025 and award search, loaded 30 Sep 2026. State figures come from each state's top-100 NAICS list, so small amounts in a state may be missing. See methodology.