541990 — All Other Professional, Scientific, and Technical Services
Description
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
Exclusions & Cross-References
- Providing legal services--are classified in Industry Group 5411, Legal Services;
- Providing accounting, tax preparation, bookkeeping, and payroll services--are classified in Industry Group
- 5412, Accounting, Tax Preparation, Bookkeeping, and Payroll Services;
- Providing architectural, engineering, and related services--are classified in Industry Group 5413,
- Architectural, Engineering, and Related Services;
- Providing specialized design services--are classified in Industry Group 5414, Specialized Design Services;
- Providing computer systems design and related services--are classified in Industry Group 5415, Computer
- Systems Design and Related Services;
- Providing management, scientific, and technical consulting services--are classified in Industry Group 5416,
- Management, Scientific, and Technical Consulting Services;
- Providing scientific research and development services--are classified in Industry Group 5417, Scientific
- Research and Development Services;
Overview Facts
| NAICS Code | 541990 |
|---|---|
| Industry Title | All Other Professional, Scientific, and Technical Services |
| SBA Size Standard | $19,500,000 |
| IRS PBA Code | 541990 (exact match) |
| Sectors Hierarchy | Sector 54 → 541 → 5419 |
| Source / Verified | US Census 2022 NAICS Manual / 2026-06-28 |
Legacy SIC Concordance
Trace the historical mapping chain from the 1987 Standard Industrial Classification (SIC) to the modern 2022 NAICS code format.
- SIC 7389 - Business Services (via SIC1987:7389→NAICS1997:54199→2002:541990→2007:541990→2012:541990→2017:541990→2022:541990)
Related Resources & Compliance Guides
Further regulatory reference links for NAICS code 541990:
- Sector 54 Directory Hub — List of related industries in the Professional, Scientific, and Technical Services sector.
- SIC ↔ NAICS Crosswalk Tool — Look up mappings between legacy SIC codes and modern classifications.
- SBA Size Standards Guide — Complete rules and averaging periods for small business classifications.
- Calculating Annual Receipts Guide — Detailed worked example of revenue calculation rules.
- IRS Principal Business Activity Guide — How NAICS codes map to corporate and entity tax filings.
Related Industries in 5419
Frequently Asked Questions (FAQ)
Is 541990 a valid 2022 NAICS code?
NAICS 541990 is 'All Other Professional, Scientific, and Technical Services', a 2022 U.S. national industry under Sector 54 (Professional, Scientific, and Technical Services); the SBA small-business size standard is $19,500,000.
What is the SBA size standard for NAICS 541990?
The SBA small business size standard for NAICS 541990 is $19,500,000 (based on receipts).
What is the legacy SIC code mapping for 541990?
NAICS code 541990 maps to the legacy 1987 SIC codes: 7389 - Business Services.