Custom Computer Programming Services
Businesses in this NAICS code primarily design, write, modify, and test software built for a specific client need.
Classification summary
Businesses in this NAICS code primarily design, write, modify, and test software built for a specific client need.
- Taxonomy
- NAICS
- Slug
- 541511
- Primary use
- Custom software development delivered as a client service.
Common businesses using this code
- Custom software consultancies building internal tools or client-facing applications.
- Development firms shipping bespoke systems under contract for specific customers.
- Engineering teams hired to extend, modernize, or replace client-owned software.
Don't confuse with
Systems architecture and integration work, rather than custom coding itself.
A repeatable software product, rather than client-service development.
Specialized computer support and adjacent technical services, rather than custom application development.
Related codes
541512
Computer Systems Design Services
541513
Computer Facilities Management Services
541519
Other Computer Related Services
513210
Software Publishers
518210
Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services
54151
Computer Systems Design and Related Services
Official source
U.S. Census Bureau NAICS 541511 pageOfficial Census NAICS lookup remains the anchor source for classification wording and verification.