When firms register in SAM.gov, one of the first strategic decisions they make is which NAICS codes to list. It can feel like a technical box to check, but the choice has real consequences. NAICS codes influence how agencies and primes find you, which set-asides you can pursue, and how your size is measured.
Why NAICS codes matter so much
Each federal solicitation carries a single NAICS code chosen by the contracting officer to describe the principal nature of the work. The SBA assigns a size standard to every NAICS code, usually based on average annual receipts or number of employees. If your business falls under the size standard for the code on a particular solicitation, you are considered small for that procurement.
That means the same company can be small under one code and other than small under another. Your size is not one fixed label; it depends on the code.
Start with your real work
Begin by describing what your firm actually does day to day and where its revenue comes from. Then search the official NAICS descriptions to find codes that match. The U.S. Census Bureau maintains the NAICS manual and search tools, and the SBA publishes the table of size standards.
Your primary NAICS code should reflect the activity that makes up the largest share of your business. Secondary codes can cover other genuine capabilities.
Look at how agencies buy your work
Here is a step many firms skip. Search past awards and solicitations for the kind of work you do, and note which NAICS codes contracting officers actually used. Two codes may both seem to fit your services, but if agencies consistently use one of them for the work you want, that code deserves a place on your list.
Common mistakes to avoid
- Listing dozens of loosely related codes. It can make your registration look unfocused and does not by itself make you eligible to perform the work.
- Ignoring size standards. Check the size standard for each code you list so you know where you qualify as small.
- Forgetting affiliation. SBA size rules can count the receipts or employees of affiliated businesses. If you have common ownership or close ties with other companies, read the rules carefully or get professional advice.
- Never updating. As your business grows or shifts, revisit your codes at each annual SAM renewal.
List your primary NAICS codes on your capability statement and in your SAM and SBA profiles. Prime contractors looking for small business partners often search by NAICS code and size, so accurate codes help the right people find you.
When a solicitation code seems wrong
Occasionally a contracting officer may assign a NAICS code that does not seem to fit the work. The rules provide ways to raise this, including a formal NAICS code appeal process with tight deadlines. If you believe a code is wrong, consider asking a question during the solicitation’s question period and consult a government contracts professional about your options.
Choosing NAICS codes is not a one-time task. Treat it as part of your annual planning, and let it reflect both what you do and how the government buys it.