Glossary

NAICS

In B2B sales, NAICS (North American Industry Classification System) is a standardized coding system used to classify companies by their primary industry, enabling structured segmentation, targeting, reporting, and analysis. Sales and marketing leaders, RevOps, SDRs/BDRs, AEs, and data/analytics teams typically use NAICS during ICP definition, territory design, prospecting, lead routing, and pipeline/reporting stages. Related terms include industry code, SIC code (older system), industry vertical, firmographic code, and segment code.

Importance in B2B Sales

NAICS is significant because it gives B2B organizations a consistent, objective way to segment markets and prioritize accounts based on industry fit. It underpins ICP design, TAM/SAM analysis, and territory planning by grouping similar companies that share operating models, regulatory environments, and needs. In day-to-day sales execution, NAICS drives list-building, outbound campaign targeting, lead scoring, and routing rules (e.g., “all 541512 leads go to the tech vertical team”). Strategically, using NAICS improves forecast accuracy and win-rate analysis by letting leaders see which industries perform best and where to invest more resources. Operationally, it helps align marketing, sales, and customer success around a shared view of “who we sell to” and how performance varies by industry cluster.

FAQ

How should we pick the “right” NAICS code for a target account?

Use the NAICS code that best reflects the company’s primary revenue-generating activity (often listed on their website, in government filings, or in data providers like ZoomInfo/D&B). If sources differ, prioritize official government/registry sources first, then reputable data vendors, and document your internal choice for consistency.

What if an account operates in multiple industries or has several NAICS codes?

Assign one primary NAICS for segmentation and reporting (usually the largest revenue line of business) and keep secondary NAICS codes as supplemental data. In RevOps, define a clear rule (e.g., “use the parent company’s primary NAICS” or “use the BU NAICS tied to our opportunity”) to avoid confusion in routing and analytics.

Where do B2B sellers typically get NAICS codes for prospecting?

Most teams source NAICS from B2B data platforms (D&B, ZoomInfo, Clearbit, etc.), CRM enrichment tools, or government/industry registries. SDRs/BDRs then filter lists by NAICS (e.g., “show me all 541611 in the Midwest with 500+ employees”) to build highly targeted campaigns.

How does NAICS actually affect sales performance and outcomes?

NAICS-based targeting lets you focus messaging and resources on industries where your product has a strong value proposition and proven wins, which typically raises reply rates, conversion rates, and ACV. It also enables better benchmarking (e.g., win rates, cycle length, expansion) by industry so you can double down on the most profitable NAICS segments.

Should we use NAICS or SIC in our sales processes?

Most modern B2B orgs standardize on NAICS because it is newer, more granular, and maintained across the U.S., Canada, and Mexico. You can keep SIC for legacy reporting if needed, but choose NAICS as your “single source of truth” for new territories, ICP work, and sales dashboards.