Use NAICS codes to describe what you actually do—not what you hope might match.

The North American Industry Classification System (NAICS) groups businesses by the economic activity behind the products and services they provide. In federal contracting, NAICS is important because opportunities are assigned codes and SBA size standards are tied to those codes.

Why NAICS matters when searching for contracts

Searching only by everyday keywords can miss relevant notices or return large amounts of noise. NAICS gives you another structured filter. If your business provides several legitimate service lines, keeping a primary code and a small set of additional relevant codes can make opportunity discovery more precise.

GovBidFit uses that idea in the supplier workspace: a primary service plus additional structured services can be compared with the NAICS assigned to an opportunity. A match is a signal to investigate, not proof that the solicitation fits.

Primary code versus additional codes

Your primary NAICS should reflect the main activity of the business. A business can also work under multiple NAICS codes when it provides different products or services. For example, a facilities company may legitimately perform janitorial work and landscaping; an IT firm may provide systems design and separate cybersecurity-related services.

Avoid adding unrelated codes simply to increase the number of search results. That creates poor matches and wastes proposal time. The strongest profile is usually specific enough to exclude work you cannot credibly perform.

How to choose a working NAICS list

1. Write down your real revenue-generating products and services.
2. Use the official NAICS search or list to identify the closest descriptions.
3. Compare the description with work you have actually performed.
4. Keep the codes that repeatedly appear on realistic opportunities.
5. Review the list when your business adds or stops offering a service line.

NAICS and small-business size standards

SBA size standards differ by industry and correspond to NAICS codes. This is why “we are a small company” is not enough to decide whether a business qualifies as small for a specific procurement. Review the size standard associated with the solicitation’s NAICS code and the applicable SBA rules.

What to do when a solicitation uses a surprising code

Read the statement of work before dismissing the opportunity. The assigned NAICS may still cover the principal purpose even if your everyday description is different. If the code affects eligibility or size status, use official SBA and solicitation guidance rather than guessing from the title.

How GovBidFit should use NAICS

Good matching should explain the reason for a score. An exact primary NAICS match can be stronger than a related-industry signal. An additional service match can still be meaningful. Location, set-aside, contract size, scope and deadline should then refine the decision. No single code should turn a weak opportunity into an automatic “go.”