Yes, businesses can and should have multiple NAICS codes when operating across different industries or offering diverse services. Companies can register up to 10 classification codes on SAM.gov to expand federal contracting opportunities. While the Census Bureau assigns a primary code based on highest revenue activity, businesses self-select secondary codes for additional activities. This practice increases market visibility, improves competitive positioning, and provides access to more set-aside contracts. The strategic selection of appropriate codes requires regular review as operations evolve.
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ToggleHow Multiple NAICS Codes Benefit Your Business

Leveraging multiple NAICS codes opens significant advantages for businesses looking to expand their market reach and operational flexibility.
Companies can substantially increase their market visibility by appearing in various industry directories and procurement databases, particularly on government platforms like SAM.gov where opportunities are categorized by code. Contractors can strategically discover more contract opportunities by self-assigning multiple relevant NAICS codes that accurately represent their diverse business activities. The System for Award Management (SAM) specifically allows businesses to register up to 10 classification codes to maximize their contracting potential.
Multiple classifications enable businesses to participate in diverse contract opportunities while improving risk assessment procedures. Set-aside contracts provide specialized opportunities for qualifying businesses across different industries.
Diversify your business identity through multiple NAICS codes to unlock broader contracting possibilities and enhance operational risk management.
Insurance carriers use these codes to evaluate business activities and calculate appropriate premiums, potentially resulting in more accurate coverage and competitive rates. Companies with varied operations can differentiate higher-risk activities from lower-risk ones, potentially reducing overall insurance costs.
The strategic use of multiple NAICS codes also strengthens competitive positioning by enabling participation in sector-specific incentive programs while facilitating more thorough market intelligence gathering across different industries.
Federal Agency Policies on NAICS Code Assignment

While businesses may self-identify with multiple NAICS codes, federal agencies follow specific protocols for officially assigning these classifications in government contexts. The agency assignment process varies markedly across the federal government, with no central authority controlling code distribution.
The Census Bureau typically assigns a single NAICS code based on an establishment’s primary revenue-generating activity for statistical purposes. This approach ensures accurate data collection and analysis for economic statistics and reporting. However, contracting officers must select codes representing the largest percentage of a contract’s value when procuring services or goods. Understanding these classifications is essential for small business eligibility in federal contracting programs.
Since 2013, the Small Business Administration has permitted multiple NAICS codes for multiple-award and IDIQ contracts, recognizing the diverse nature of complex procurements. Extensive statements of work with various deliverables make accurate NAICS assignment particularly challenging for contracting officers.
This code variability between agencies reflects their unique regulatory objectives, with each entity establishing independent policies for assigning or accepting NAICS classifications within their programs.
Best Practices for Selecting and Managing Multiple NAICS Codes

Businesses that operate across diverse sectors require systematic approaches to identify, select, and manage multiple NAICS codes effectively.
Successful NAICS code selection begins with a thorough assessment of all business activities, carefully mapping revenue streams to the most appropriate classifications. Organizations should prioritize codes based on revenue generation, designating the highest-earning activity as the primary code while assigning secondary codes to other significant operations. Using the Census Bureau tools can streamline the classification process.
Strategic NAICS code selection demands mapping revenue streams to classifications, with primary codes reflecting top-earning activities.
This strategic code management strategy enhances visibility in procurement systems and expands contracting opportunities. Misclassification can result in incorrect business insights and limit potential market opportunities. Regular reviews of assigned codes guarantee continued alignment with evolving business operations and regulatory requirements.
Companies should document their rationale for code selection, maintain consistent classifications across all federal and state registrations, and update their portfolio as new market opportunities emerge or business activities shift. Leveraging multiple NAICS codes in marketing materials can substantially increase competitive advantage when pursuing government contracts across different sectors.
Frequently Asked Questions
How Do Multiple NAICS Codes Affect Tax Reporting Requirements?
Multiple NAICS codes create specific tax classification implications when filing returns.
Businesses must accurately report income and expenses for each distinct activity, potentially requiring separate Schedule Cs for unrelated operations.
Companies should list their largest revenue-generating activity first when limited to reporting two codes.
Reporting accuracy concerns arise when records don’t clearly differentiate between business activities, which may trigger audits if expense allocations appear unusual for the industries represented by the chosen codes.
Can Startups Apply for Multiple NAICS Codes Immediately?
Yes, startups can apply for multiple NAICS codes immediately upon initial registration in SAM.gov.
New businesses should identify their core operational activities to select appropriate NAICS classifications from the beginning. Startups aren’t limited to a single code and can register several that accurately reflect their business functions.
This approach allows new companies to position themselves properly for federal contracting opportunities and industry-specific programs without waiting for an established business history.
Do International Companies Need Separate NAICS Codes for Global Operations?
International companies don’t require separate NAICS codes specifically for global operations. NAICS classification is primarily a North American system with five-digit codes providing comparability across the U.S., Canada, and Mexico.
For operations outside North America, companies typically use local classification systems or international standards like ISIC.
When reporting to U.S. authorities, however, companies must classify their overseas activities according to NAICS-based designations, particularly for regulatory compliance or statistical reporting purposes.
How Often Should Businesses Update Their NAICS Code Portfolio?
Businesses should update their NAICS code classifications whenever significant operational changes occur.
At minimum, companies should conduct annual reviews during tax filing season, with quarterly evaluations recommended for rapidly evolving enterprises.
The federal government officially updates NAICS codes every five years, with the most recent version released in 2022.
Triggering events for business classification updates include launching new products, entering different markets, completing acquisitions, or discontinuing business activities.
What Penalties Exist for Incorrectly Assigned NAICS Codes?
A penalties overview for incorrect NAICS code assignment includes disqualification from federal contracts, particularly set-aside programs.
Businesses may lose eligibility for specific opportunities when codes don’t align with the principal work being procured.
Compliance implications extend to potential SBA challenges, reduced market visibility, and missed contracting opportunities.
While direct financial penalties are uncommon, the operational impact can be substantial through lost business opportunities and exclusion from relevant federal solicitations.