NAICS

The North American Industry Classification System (NAICS) is a standardized code system used by the federal government to classify businesses and contracts by industry sector and subsector. Each NAICS code is a six-digit number that identifies the primary type of economic activity involved. In federal procurement, agencies assign a NAICS code to each contract action to specify the principal purpose of the contract. This classification supports reporting, market research, and regulatory compliance.

NAICS codes are essential for identifying the industry focus of federal contracts, enabling market segmentation and targeted analysis. They are critical for determining small business eligibility, setting aside opportunities, and tracking spending by industry. Accurate NAICS assignment affects competition, compliance, and the ability to analyze trends across sectors. Researchers and vendors rely on NAICS codes to find relevant opportunities and understand federal demand.

In FPDS, NAICS codes appear as a required data element on each contract action, typically labeled as 'NAICS' or 'NAICS Code.' Users can filter, group, or search contract records by NAICS to analyze spending patterns, vendor participation, or agency buying behavior by industry category.

A common misunderstanding is that a contract can have multiple NAICS codes, but FPDS records only allow one primary NAICS code per action. Another confusion is assuming NAICS codes are unique to federal procurement, when they are actually used across North America for economic classification.

A contract for IT software development may be assigned NAICS code 541511 (Custom Computer Programming Services). Analysts can use this code to identify all contracts for similar services across agencies.

• U.S. Census Bureau — North American Industry Classification System