Selecting the right NAICS codes for SAM registration requires analyzing your primary business activities first. Use the U.S. Census Bureau’s official search tool or NAICS Association database to find codes that match your operations. Choose 3-5 codes maximum, designating one as primary that best represents your core capabilities. Confirm your selections meet size standards for small business eligibility and update them regularly as your business evolves. The following guide provides detailed steps for ideal NAICS selection.
Understanding NAICS Codes and Their Purpose in Federal Contracting

When businesses enter the federal contracting arena, North American Industry Classification System (NAICS) codes serve as vital identifiers that determine their eligibility for specific government opportunities.
These NAICS classifications function as the foundation of government procurement processes, categorizing businesses according to their primary activities.
Contracting officers rely on NAICS codes to match opportunities with qualified vendors and establish appropriate size standards for small business set-asides. By assigning a code to each procurement, the government guarantees that businesses compete within their relevant industry categories.
NAICS code assignment ensures businesses compete fairly within their industries while enabling targeted government procurement.
For companies seeking federal contracts, understanding these codes is important for several reasons:
- They define small business eligibility thresholds
- They help identify relevant contract opportunities
- They enable effective market research
- They assist in analyzing competition within specific industries
Proper NAICS code selection greatly impacts a firm’s visibility and qualification for government contracts that align with their capabilities. Regularly updating NAICS codes ensures your business remains competitive as your products or services evolve. The six-digit primary NAICS code is particularly crucial for businesses during SAM.gov registration, as it determines their classification for all federal contracting opportunities. It’s advisable to select approximately five key NAICS Codes that best represent your organization’s core capabilities to optimize search results in procurement databases.
Step-by-Step Guide to Finding the Most Appropriate NAICS Codes

Finding the correct North American Industry Classification System (NAICS) codes requires a methodical approach to confirm accuracy and maximize contracting opportunities.
Businesses should begin by thoroughly analyzing their primary activities to determine relevant industry classification categories. The code selection process can be streamlined by utilizing official search tools provided by the U.S. Census Bureau or the NAICS Association. These codes are fundamental to procurement eligibility when competing for government contracts.
- Identify your company’s main business activities and revenue sources to pinpoint appropriate categories
- Search databases using specific keywords that accurately describe your products or services
- Review code descriptions carefully to verify they match your actual business operations
- Select multiple NAICS codes if your business spans several industries, but designate one as primary
After identifying potential codes, verify their accuracy by comparing descriptions against your business offerings. Choosing the wrong NAICS code could result in missed contracting opportunities from federal agencies seeking specific types of businesses.
Remember that accurate NAICS code selection directly impacts your visibility to federal agencies seeking contractors with your specific capabilities. Keep in mind that NAICS codes are revised every five years to reflect changes in the economy and industry classifications.
Best Practices for Managing NAICS Codes in Your SAM Profile

Proper management of NAICS codes within your SAM profile represents a key factor in securing relevant government contract opportunities.
Effective NAICS code management guarantees your business remains visible to appropriate government buyers while maintaining compliance with federal requirements.
Most experts recommend limiting your selection to 3-5 codes that accurately reflect your company’s core capabilities.
Designate a primary NAICS code that represents your main business function, followed by secondary codes for additional services or products.
As required for government contracting, all NAICS codes selected should align with your business capabilities and correspond with your System for Award Management registration information.
Size standards for small business eligibility are directly tied to the NAICS codes you select, determining your qualification for set-aside contracts and small business programs.
Strategic selection of both primary and secondary NAICS codes can significantly enhance your market positioning and increase your chances of winning government contracts.
Regular SAM profile updates are essential as your business evolves or when NAICS classifications change.
Review your codes at least annually, especially before major procurement cycles begin.
Incorrect or outdated codes can disqualify your business from contract opportunities.
Avoid over-classification with too many codes, which can dilute your company’s specialization and confuse contracting officers reviewing your profile for specific procurement needs.
Frequently Asked Questions
How Often Should I Update My NAICS Codes?
Businesses should update their NAICS codes during the mandatory five-year revision cycles (next in 2027), and whenever significant changes occur in their operations.
Annual reviews during SAM.gov renewal guarantee industry relevance and compliance with federal contracting requirements.
Additionally, updates are necessary when:
- Business activities shift to new industries
- Primary revenue sources change
- Mergers or acquisitions occur
- Pursuing industry-specific certifications
NAICS updates maintain accurate representation of business activities and prevent missed contracting opportunities.
Can I Bid on Contracts With Different NAICS Codes?
Yes, businesses can bid on contracts with different NAICS codes than their primary classification.
Effective bidding strategies require registration with multiple relevant codes in SAM.gov (up to 5-10 codes per entity). Companies should verify code compatibility before bidding, ensuring they meet the size standards for each specific solicitation.
For multiple-award contracts with segmented NAICS codes, businesses can target portions that align with their capabilities, enhancing their competitive position across diverse opportunities.
What Happens if I Select Incorrect NAICS Codes?
Selecting incorrect NAICS codes can lead to serious consequences for government contractors.
Businesses may face disqualification from set-aside contracts, exposure to False Claims Act violations, and potential contract termination.
Incorrect code selection may also trigger SBA audits, freeze bidding capabilities, and result in missed revenue opportunities.
To avoid these issues, contractors should regularly audit their SAM.gov profiles, verify codes match their primary business activities, and consult SBA resources when uncertain about proper classification.
Do International Companies Use Different Industry Classification Systems?
Yes, international companies utilize different global classification systems based on their operational regions.
Companies operating in North America often use NAICS, while global financial markets typically employ GICS or ICB international standards.
European firms might follow ICB, which is used by the London Stock Exchange.
The choice typically depends on regulatory requirements, investor expectations, and the specific markets where the company conducts business or seeks investment.
How Do NAICS Codes Affect Set-Aside Contract Eligibility?
NAICS codes directly determine set-aside benefits by establishing business size standards for specific industries.
The eligibility criteria for set-aside contracts depend on these assigned codes, which identify whether a company qualifies as small within its industry.
Government contracting officers use these codes to designate contracts for specific underrepresented groups, such as women-owned or service-disabled veteran-owned businesses.
Companies must select appropriate NAICS codes during registration to access contracts reserved for qualified small businesses in those industries.