What's the NAICS and SIC code for a software development business?
For a software development business, use NAICS 541511 (Custom Computer Programming Services) in the US and SIC 62012 (Business and domestic software development) in the UK.
United States, NAICS 2022
541511 Custom Computer Programming Services
Custom Computer Programming Services covers writing software to a client's specification, including custom web and mobile apps.
SBA small business limit: $34 million average annual receipts.
United Kingdom, SIC 2007
62012 Business and domestic software development
Business and domestic software development, including web page design.
Use this code when you register with Companies House or file your confirmation statement.
When a different code fits better
These are the codes most often confused with the main answer. Pick by the activity that earns most of your revenue.
| Code | Title | Use it if |
|---|---|---|
| NAICS 513210 | Software Publishers | you build and sell your own software product or SaaS to many customers |
| NAICS 541512 | Computer Systems Design Services | your work is mostly designing whole systems rather than writing code |
| SIC 58290 | Other software publishing | you publish ready-made software for sale |
| SIC 62011 | Ready-made interactive leisure and entertainment software development | you develop games or other entertainment software |
Good to know
Agencies building apps for clients use the custom programming codes; companies selling their own product use the publishing codes.
You can list more than one code. Companies House accepts up to four SIC codes, and SAM.gov lets you add several NAICS codes, with one marked as primary.
What the code affects
- SBA programs and federal contracts: your NAICS code sets the size limit you must stay under to count as small. Check your size.
- SAM.gov registration: contracting officers search by NAICS, so list every code you can deliver work under.
- Companies House: your SIC code appears on the public register and in your confirmation statement.
Related business types
Codes checked against the US Census 2022 NAICS index and the ONS UK SIC 2007 index. Information only; confirm with the agency you file with.