---
title: "What Is SAM?"
term: "SAM"
description: "SAM (serviceable addressable market) is the portion of TAM your product can realistically reach with your current business model, geography, and channel — the market you could serve if you executed perfectly."
date: 2026-07-25T00:00:00.000Z
updated: 2026-07-25T00:00:00.000Z
topics: ["venture-capital"]
source: https://venturecapitaltracker.com/glossary/sam
---

# What Is SAM?

> SAM (serviceable addressable market) is the portion of TAM your product can realistically reach with your current business model, geography, and channel — the market you could serve if you executed perfectly.

**SAM** (serviceable addressable market) is the revenue opportunity available to your product given current capabilities, geography, regulation, and go-to-market reach.

### How it works

Market sizing stack:

- **TAM:** Total theoretical demand if everyone bought a solution in the category globally.
- **SAM:** Segment you can serve with today's product — e.g., U.S. mid-market healthcare clinics, not all hospitals worldwide.
- **SOM:** Share you can realistically win near-term given competition and capacity.

Bottom-up SAM example: 50,000 target companies × $20K ACV = **$1B SAM**. Top-down SAM might filter industry reports to your niche.

Credible decks show assumptions: why vertical limits exist, expansion path from SAM to broader TAM, and **[bottom-up TAM](/glossary/bottom-up-tam)** cross-check.

### Why it matters

- **Founders:** SAM focuses sales ICP and product roadmap — chasing full TAM early dilutes effort.
- **Investors:** SAM must support venture-scale outcomes; tiny SAM caps return potential even with great execution.

### Common mistake

Equating SAM with TAM by citing a giant industry report without filtering to buyers you can actually reach this year with your SKU and price.

### Related ideas

See also [TAM](/glossary/tam), [bottom-up TAM](/glossary/bottom-up-tam), [beachhead market](/glossary/beachhead-market), and [ICP](/glossary/icp).

## FAQ

### What is SAM in simple terms?

SAM is the slice of the total market you can actually target with your product as built today — right customer type, geography, and price point. It sits between giant TAM and the even smaller share you currently capture (SOM).

### Why does SAM matter?

For founders, SAM defines focus — which segments to sell to first. For investors, honest SAM shows you understand reachable revenue, not just billion-dollar TAM headlines.


---
Source: https://venturecapitaltracker.com/glossary/sam