Serviceable Addressable Market (SAM)
Definition
Serviceable addressable market (SAM) is the portion of the total addressable market that a company can realistically target with its current product, business model, and geographic reach. SAM narrows TAM to the segment that the company can actually serve, providing a more practical view of near-term revenue potential.
Formula
Overview
Serviceable addressable market (SAM) is the subset of TAM that your company can realistically reach. It accounts for practical constraints like geographic focus (US-only vs. global), customer segment (SMBs vs. enterprise), language (English-only product), channel reach (online-only vs. direct sales), and product capabilities (which use cases you actually address today).
SAM is a more honest and useful planning metric than TAM. While TAM appeals to investors' desire for large markets, SAM drives actual go-to-market strategy. A company might have a $1B TAM but a $100M SAM if it only serves English-speaking SMB SaaS companies in North America, and that is perfectly fine for building a substantial business.
Within SAM, some companies further define their SOM (Serviceable Obtainable Market), the portion they can realistically capture in 3–5 years given competition, market penetration rates, and growth trajectory. SOM is the most grounded and actionable figure for financial planning and forecasting.
Example
TAM for financial tools is $1.2B globally. Focusing only on US-based seed-stage startups (10 % of the global market), the SAM is $120M.
Related Calculators
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