Serviceable Addressable Market (SAM)
Serviceable Addressable Market (SAM) is the portion of your total addressable market that your product, business model, and geographic reach can realistically serve.
In depth
SAM narrows the broad TAM down to the buyers you can actually sell to today, given product fit, pricing, language coverage, regulatory constraints, and the regions you operate in. You typically calculate it top-down by filtering TAM with qualifying attributes, or bottom-up by counting the accounts that match your ideal customer profile and multiplying by a realistic average contract value. The number matters because investors, boards, and growth teams use it to judge whether the opportunity is large enough to justify continued investment in a segment.
A common pitfall is treating SAM as a vanity figure inflated to impress stakeholders, which leads to misallocated sales and marketing budget. In a quiz-funnel and lead-qualification workflow, SAM is the practical filter that shapes who your funnel should attract: the segmentation logic in your scorecard should map to the same firmographic and need-based criteria that define your serviceable market, so unqualified visitors are scored down rather than passed to sales as false positives.
Example in practice
Frequently asked questions
How is SAM different from TAM?
TAM is the entire theoretical demand for a category, while SAM is the slice you can realistically serve given your product fit, pricing, and geography. SAM is always smaller than TAM and more actionable for planning.
Should I use a top-down or bottom-up approach to size SAM?
Bottom-up counting of accounts that match your ICP is usually more defensible because it ties to real, reachable buyers. Use top-down filtering of TAM as a cross-check rather than the primary method.
How does SAM affect my lead qualification quiz?
SAM defines the firmographic and need-based criteria your funnel should attract and your scorecard should reward. Aligning quiz scoring with SAM keeps unqualified leads from being passed to sales as false positives.