Federal NAICS Codes

NAICS 541990: All Other Professional, Scientific, and Technical Services

Explore obligations, trends, recent awards, and incumbent contractors for NAICS 541990.

NAICS 541990 federal market metrics

Total obligations
$363.5B
Total awards
124,493 awards
Active obligations
$52.3B
Size standard
$19,500,000 receipts

What this NAICS covers

NAICS 541990 covers professional, scientific, and technical services that are not classified elsewhere by other NAICS codes, including specialized advisory, analytic, testing, or program support services provided on a project or task basis.

Federal opportunities under 541990 typically involve acquiring discrete professional or technical services not classified elsewhere, such as specialized studies, testing projects, subject-matter advisory tasks, or short-term program support defined by specific scopes and deliverable-based statements of work.

FY2025 snapshot

Obligations
$4.6B
Awards
3,460
Average award
$1.3M
Change from FY2024
-50.2%

Recent awards

Search contractors

$2,650,000

NOBLIS, INC.

Federal Highway Administration

PIID
693JJ326F00118N
PSC
AS11 - TRANSPORTATION R&D SERVICES; SURFACE TRANSPORTATION, PUBLIC TRANSIT, AND RAIL; BASIC RESEARCH

$897,182

POLOLEI SOLUTIONS, LLC

Centers for Disease Control and Prevention

PIID
75D30126F00014
PSC
B529 - SPECIAL STUDIES/ANALYSIS- SCIENTIFIC DATA

$73,588

PARYMON CORP

National Oceanic and Atmospheric Administration

PIID
1305M326F0134
PSC
R425 - SUPPORT- PROFESSIONAL: ENGINEERING/TECHNICAL

$115,557

POLOLEI SOLUTIONS, LLC

Centers for Disease Control and Prevention

PIID
75D30126F00017
PSC
AJ12 - GENERAL SCIENCE AND TECHNOLOGY R&D SERVICES; GENERAL SCIENCE AND TECHNOLOGY; APPLIED RESEARCH

$21,073

Ryan Stephen Komara

US Geological Survey

PIID
140G0126P0251
PSC
B529 - SPECIAL STUDIES/ANALYSIS- SCIENTIFIC DATA

$257,878

INALAB CONSULTING, INC.

US Geological Survey

PIID
140G0226F0218
PSC
R499 - SUPPORT- PROFESSIONAL: OTHER

$1,294,802

OCEAN ASSOCIATES INC

National Oceanic and Atmospheric Administration

PIID
1305M326F0112
PSC
R499 - SUPPORT- PROFESSIONAL: OTHER

FAQ

What work fits NAICS 541990?
  • Specialized laboratory testing or analytical services procured as discrete task orders not covered by standard lab-supply contracts.
  • Niche technical assessments or specialty studies requiring uncommon subject matter expertise and special-purpose technical reports.
  • Short-term technical advisory on a narrow scientific problem producing specific deliverables such as test reports or expert analyses.
  • Field sampling and laboratory analysis contracted for a particular program where the service is not part of a larger engineering or construction contract.
When is NAICS 541990 a weak fit?
  • Engineering design and systems integration: projects requiring detailed engineering drawings, specifications, and integration responsibility, because registered engineering and design deliverables fall under other NAICS.
  • Product testing tied to manufacturing delivery: testing that is part of a larger production contract where the manufacturer retains responsibility, because the activity is subordinate to manufacturing rather than an independent technical service.
  • Experimental research and development creating prototypes and IP: long-term R&D programs aimed at developing new products or prototypes, because that work aligns with research and experimental development classifications rather than ad hoc technical services.
What solicitation language points to NAICS 541990?
  • Scope defines standalone technical tasks with deliverables such as specialized laboratory reports, technical memoranda, or targeted subject-matter analyses.
  • Evaluation factors prioritize niche technical qualifications, specialized laboratory accreditations, or past performance on similar discrete tasks.
  • Contract line items structured as task or time-and-material orders for specific analyses rather than as system development, manufacturing, or facility operations.

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