NAICS Code
North American Industry Classification System
The six-digit industry code that gates what you match, what you can bid, and whether you count as small.
A NAICS code is a six-digit industry classification (for example 561720 janitorial, 236220 commercial construction, 541512 computer systems design). Every solicitation is tagged with one.
Businesses claim the codes that describe what they do — a primary plus any genuine secondaries. NAICS quietly controls three things: which opportunities match you, which you are eligible to bid, and whether you qualify as a small business.
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Agencies sometimes tag a solicitation with a sloppy NAICS code (a supplies buy wearing an IT-services code). A code match is a lead, not a verdict — read the title and description before committing.
What is a NAICS code in government contracting?
A NAICS code is a six-digit number that classifies a business by industry. Government solicitations are tagged with NAICS codes, and each code carries a small-business size standard. Your codes determine which contracts you match and whether you count as a small business for set-asides.
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