Key takeaways
- Each federal solicitation is assigned one NAICS code, and that code's SBA size standard decides who can bid as small.
- IT, engineering, R&D, facilities support and construction codes draw the most federal small-business dollars.
- An August 2026 SBA proposal would raise many standards, but it is not in effect.
NAICS code guides
| NAICS | Industry | Size standard | Federal awards, FY 2025 |
|---|---|---|---|
| 541511 | Custom Computer Programming Services | $34.0M receipts | $10.36B |
| 541512 | Computer Systems Design Services | $34.0M receipts | $32.04B |
| 541513 | Computer Facilities Management Services | $37.0M receipts | — |
| 541519 | Other Computer Related Services | $34.0M receipts | $25.07B |
| 518210 | Computing Infrastructure Providers, Data Processing, Web Hosting and Related Services | $40.0M receipts | — |
| 541330 | Engineering Services | $25.5M receipts | $52.27B |
| 541380 | Testing Laboratories and Services | $19.0M receipts | — |
| 541611 | Administrative Management and General Management Consulting Services | $24.5M receipts | $11.31B |
| 541614 | Process, Physical Distribution and Logistics Consulting Services | $20.0M receipts | — |
| 541620 | Environmental Consulting Services | $19.0M receipts | — |
| 541715 | Research and Development in the Physical, Engineering and Life Sciences | 1,000 employees | $48.41B |
| 541990 | All Other Professional, Scientific and Technical Services | $19.5M receipts | — |
| 561210 | Facilities Support Services | $47.0M receipts | $38.26B |
| 561612 | Security Guards and Patrol Services | $29.0M receipts | — |
| 561720 | Janitorial Services | $22.0M receipts | — |
| 562910 | Remediation Services | $25.0M receipts | $6.99B |
| 236220 | Commercial and Institutional Building Construction | $45.0M receipts | $30.64B |
| 237310 | Highway, Street and Bridge Construction | $45.0M receipts | — |
| 238210 | Electrical Contractors and Other Wiring Installation Contractors | $19.0M receipts | — |
| 238220 | Plumbing, Heating and Air-Conditioning Contractors | $19.0M receipts | — |
| 336411 | Aircraft Manufacturing | 1,500 employees | — |
| 336413 | Other Aircraft Parts and Auxiliary Equipment Manufacturing | See SBA table | $19.77B |
| 336611 | Ship Building and Repairing | See SBA table | $37.18B |
| 334111 | Electronic Computer Manufacturing | 1,250 employees | — |
| 339999 | All Other Miscellaneous Manufacturing | See SBA table | $4.30B |
| 423430 | Computer and Computer Peripheral Equipment and Software Merchant Wholesalers | 250 employees | — |
| 423850 | Service Establishment Equipment and Supplies Merchant Wholesalers | See SBA table | $4.54B |
| 611430 | Professional and Management Development Training | $15.0M receipts | — |
| 621111 | Offices of Physicians | $16.0M receipts | — |
| 811210 | Electronic and Precision Equipment Repair and Maintenance | $34.0M receipts | — |
Sources: SBA Table of Small Business Size Standards, 13 CFR 121.201; GovSpend analysis of FPDS data, May 27, 2026. Spending is shown only for codes in GovSpend's top 15 by small-business dollars.
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