Josef Kamara, CPA, CISSP, CISA · Updated May 6, 2026 · 1 minute read

NAICS Code

North American Industry Classification System code, the six-digit identifier the Census Bureau publishes and federal contracting officers assign to each solicitation to indicate the principal nature of the work. SBA pairs each NAICS code with a small business size standard (a revenue ceiling or employee count) at 13 CFR 121.201; contractors above the size standard cannot self-certify as small for that solicitation. The contracting officer NAICS designation drives both the size determination and the set-aside eligibility, and may be appealed to the SBA Office of Hearings and Appeals within 10 calendar days of solicitation issuance.