Market segments separate an addressable market into groups with different needs and economics. Compare a supplied account list with observed revenue and contribution, then check which groups deserve further research.
Market segments in marketing are groups of potential buyers with shared needs, buying conditions or business characteristics. A useful group has a clear boundary and a commercial question attached: can we reach these buyers, serve them economically and meet a need they recognize?
Start with the market your business could plausibly serve. Write down the product, geography, buyer type and delivery limits. A regional industrial-supplies distributor might compare independent garages, small manufacturers and facilities contractors inside its delivery area.
These are candidate opportunity groups. Existing customers provide evidence about their economics, but they are only part of the potential market. The SBA's market research guidance separates demand, market size, location, saturation and pricing as questions to investigate. A revenue export alone cannot answer them all.
Keep group membership independent of the outcome you want to compare. Defining a group as customers with high revenue and then finding high revenue says little. The existing B2B customer segmentation guide covers customer-master grouping mechanics; use those rules without rebuilding that method here.
Observed segment contribution = Net revenue from customers in the segment − Their agreed variable costs
Contribution per buying account = Observed segment contribution / Distinct buying accounts
Coverage of the supplied account list = Buying accounts / Eligible accounts on that list
Contribution here deducts product and variable fulfillment costs. It excludes fixed overhead and acquisition spending, so it is neither net profit nor a complete acquisition investment test. Apply the same cost policy to every group.
Use an invoice-line export with account ID, invoice date, net revenue, associated variable costs and the approved segment field. Add an eligible-account list containing customers and prospects, with one business per row and the same segment labels. Reconcile parent companies before counting accounts.
Industry codes can help define consistent groups. Census guidance on NAICS explains that it classifies business establishments by production activity. An establishment is not automatically a separate purchasing account; match the unit to your selling process.
This fictional US distributor reviews the year ended September 30, 2026. Its customer export summarizes the invoice lines below. The final column subtracts variable cost from revenue; all amounts are USD.
| Account | Candidate segment | Revenue (USD) | Variable cost (USD) | Contribution (USD) |
|---|---|---|---|---|
| G-A | Garages | 50,000 | 35,000 | 15,000 |
| G-B | Garages | 70,000 | 49,000 | 21,000 |
| M-A | Manufacturers | 90,000 | 54,000 | 36,000 |
| M-B | Manufacturers | 110,000 | 66,000 | 44,000 |
| F-A | Facilities contractors | 60,000 | 45,000 | 15,000 |
| F-B | Facilities contractors | 100,000 | 75,000 | 25,000 |
| Total | 480,000 | 324,000 | 156,000 |
Group those rows, then match the supplied eligible-account list. The list counts below are scenario inputs, not external market estimates.
| Segment | Eligible accounts | Buying accounts | Revenue (USD) | Contribution (USD) | Contribution per buyer (USD) | List coverage |
|---|---|---|---|---|---|---|
| Garages | 10 | 2 | 120,000 | 36,000 | 18,000 | 20.0% |
| Manufacturers | 20 | 2 | 200,000 | 80,000 | 40,000 | 10.0% |
| Facilities contractors | 40 | 2 | 160,000 | 40,000 | 20,000 | 5.0% |
| Total | 70 | 6 | 480,000 | 156,000 | 26,000 | 8.6% |
Manufacturer revenue is 90,000 + 110,000 = $200,000. Its contribution is 36,000 + 44,000 = $80,000, or 80,000 / 2 = $40,000 per buying account. Coverage is 2 / 20 = 10.0%.
The proof is the reconciliation: group revenue sums to $480,000 and contribution to $156,000, matching the customer rows. Buying accounts sum to 6. Overall coverage is 6 / 70 = 8.6%, rounded to one decimal place; do not average the group percentages.
Manufacturers have the strongest observed contribution per buyer. Facilities contractors have the lowest coverage of the supplied list. Neither finding proves which group offers the best next sale: the observed customers might be unusually large, easy to serve or long established.
Validate the list before treating the uncovered accounts as opportunities. County Business Patterns provides establishment statistics by geography, industry and employment size for businesses with paid employees. It can check the scale of a defined market, but its establishment counts are not a verified prospect list or a measure of buying intent.
Marketing owns the market definition and demand research. Sales checks account eligibility and reachability; finance owns contribution definitions. Review customer acquisition cost before assuming that stronger existing-customer economics will survive the cost of winning new buyers.
Once the evidence is credible, target markets in marketing covers choosing whom to serve. For grouping customers by purchase activity rather than market opportunity, use behavioral segmentation.
Upload your account and sales file with approved segment labels, revenue and cost columns; Covirage maps the columns, and its tools compute and check the group figures. The external AI model explains the comparisons with every figure traced to its rows. Create a free Covirage account and bring a sample of your own data.
See sales insights for the commercial questions these comparisons support.
A useful segment has a clear membership rule, a plausible shared need and a practical way to reach buyers. You also need enough evidence to compare its economics. A label becomes useful when it changes a commercial question or action.
A market segment is a candidate group. A target market is a group the business chooses to serve or prioritize. Segmentation organizes the alternatives; targeting weighs their demand, economics and delivery requirements before committing resources.
Sales records show purchases from your company, including revenue and contribution for existing customers. They omit buyers who use competitors or have never purchased. Use a separately defined market list and research to assess the wider opportunity.
Only if the evidence supports it. Different groups may have different purchasing processes, service requirements or reasons to buy. Test those differences with buyers and delivery teams before changing the offer, pricing or commercial coverage.