541511 — Custom Computer Programming Services
Description
This U.S. industry comprises establishments primarily engaged in writing, modifying, testing, and supporting software to meet the needs of a particular customer.
Exclusions & Cross-References
- Software design, development, and publishing, or software publishing only--are classified in Industry
- 513210, Software Publishers;
- PROFESSIONAL, SCIENTIFIC, AND TECHNICAL SERVICES 465
- Providing computing infrastructure, data processing services, Web hosting services (except software
- publishing), and related services, including streaming support services (except streaming distribution
- services)--are classified in Industry 518210, Computing Infrastructure Providers, Data Processing, Web
- Hosting, and Related Services; and
- Planning and designing computer systems that integrate computer hardware, software, and communication
- technologies, even though such establishments may provide custom software as an integral part of their
- services--are classified in U.S. Industry 541512, Computer Systems Design Services.
Overview Facts
| NAICS Code | 541511 |
|---|---|
| Industry Title | Custom Computer Programming Services |
| SBA Size Standard | $34,000,000 |
| U.S. Establishments | 68,051 (Census CBP, 2023) |
| IRS PBA Code | 541511 (exact match) |
| Sectors Hierarchy | Sector 54 → 541 → 5415 |
| Source / Verified | US Census 2022 NAICS Manual, Census CBP / 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 7371 - Computer Programming Services (via SIC1987:7371→NAICS1997:541511→2002:541511→2007:541511→2012:541511→2017:541511→2022:541511)
Suggested Product Service Codes (Advisory)
The following Product Service Codes (PSCs) are advisory suggestions aligned with this NAICS code. Note: NAICS and PSC codes map to different dimensions of procurement (industry vs. product/service). There is no official binding 1:1 crosswalk.
- PSC R425 — Engineering and Technical Services
Source: DoD DPCAP PSC Selection Tool (Ingested: 2026-06-29)
Related Resources & Compliance Guides
Further regulatory reference links for NAICS code 541511:
- 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 5415
Frequently Asked Questions (FAQ)
Is 541511 a valid 2022 NAICS code?
NAICS 541511 is 'Custom Computer Programming Services', a 2022 U.S. national industry under Sector 54 (Professional, Scientific, and Technical Services); the SBA small-business size standard is $34,000,000.
What is the SBA size standard for NAICS 541511?
The SBA small business size standard for NAICS 541511 is $34,000,000 (based on receipts).
What is the legacy SIC code mapping for 541511?
NAICS code 541511 maps to the legacy 1987 SIC codes: 7371 - Computer Programming Services.