NAICS Code 541990 — All Other Professional, Scientific, and Technical Services
National Industry in the official 2022 North American Industry Classification System (U.S. Census Bureau). It is the only national industry under 54199 (All Other Professional, Scientific, and Technical Services).
| Code | 541990 |
|---|---|
| Title | All Other Professional, Scientific, and Technical Services |
| Level | National Industry (6-digit) |
| Edition | NAICS 2022 edition |
| SBA size standard | $19.5 million in average annual receipts |
Official definition (2022 NAICS)
This industry comprises establishments primarily engaged in the provision of professional, scientific, or technical services (except legal services; accounting, tax preparation, bookkeeping, and related services; architectural, engineering, and related services; specialized design services; computer systems design and related services; management, scientific, and technical consulting services; scientific research and development services; advertising, public relations, and related services; market research and public opinion polling; photographic services; translation and interpretation services; and veterinary services).
Illustrative Examples:
Appraisal (except real estate) services
Marine surveyor (i.e., appraiser) services
Arbitration and conciliation services (except by lawyer, attorney, or paralegal offices)
Patent broker services (i.e., patent marketing services)
Commodity inspector services
Pipeline or power line inspection (i.e., visual) services
Consumer credit counseling services
Weather forecasting services
Handwriting analysis services
Is a business under 541990 "small"?
Under the SBA size standards (13 CFR 121.201, effective March 17, 2023), a business classified in NAICS 541990 qualifies as a small business if it does not exceed $19.5 million in average annual receipts. Small-business status determines eligibility for federal set-aside contracts, SAM.gov certifications and SBA loan programs — receipts are averaged over the latest 5 fiscal years.
Where 541990 sits in the hierarchy
| Level | Code | Title |
|---|---|---|
| Sector | 54 | Professional, Scientific, and Technical Services |
| Subsector | 541 | Professional, Scientific, and Technical Services |
| Industry Group | 5419 | Other Professional, Scientific, and Technical Services |
| NAICS Industry | 54199 | All Other Professional, Scientific, and Technical Services |
| National Industry | 541990 | All Other Professional, Scientific, and Technical Services |
Related SIC codes
Via the official U.S. Census concordance (1987 SIC ↔ NAICS), shown only where the industry definition is unchanged in NAICS 2022.
| SIC code | Title |
|---|---|
4499 | Water Transportation Services, Not Elsewhere Classified |
7299 | Miscellaneous Personal Services, Not Elsewhere Classified |
7389 | Business Services, Not Elsewhere Classified |
8999 | Services, Not Elsewhere Classified |
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Data: official 2022 NAICS structure, descriptions and Census concordances, U.S. Census Bureau — U.S. government works in the public domain (17 U.S.C. §105). Suggested reference, not an official determination.