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tam-sam-som-model

Construct market-sizing models using TAM, SAM, and SOM methodologies in Excel.

Updated Jun 17, 2026
Search Tags:#market opportunity#market-sizing#bottom-up analysis#top-down analysis#Excel model
One-click install
npx skills add https://github.com/adriaanmostert1976-lab/adriaan-toolkits --skill tam-sam-som-model
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: tam-sam-som-model
Source: https://github.com/adriaanmostert1976-lab/adriaan-toolkits/tree/main/source/modelling-toolkit/tam-sam-som-model
Command: npx skills add https://github.com/adriaanmostert1976-lab/adriaan-toolkits --skill tam-sam-som-model

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires xlsx, and includes scripts (resource) components.

What problem does it solve?

This Skill addresses the challenge of sizing market opportunities accurately and defendably, by combining top-down and bottom-up market analysis.

Core Features & Use Cases

  • Top-Down Analysis: Calculate Total Addressable Market (TAM), Serviceable Available Market (SAM), and Serviceable Obtainable Market (SOM) with a top-down approach.
  • Bottom-Up Analysis: Build market sizing from the bottom up using customer counts, pricing, and conversion rates.
  • Triangulation: Compare and combine top-down and bottom-up results for a more robust market size estimate.
  • Use Case: Utilize this Skill to estimate the market opportunity for a new product, providing data-driven insights for strategic decisions.

Quick Start

Build a market-sizing model by triggering "size the market" with the tam-sam-som-model skill.

Frequently Asked Questions about tam-sam-som-model

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I calculate TAM, SAM, and SOM for market opportunity analysis?▼

To calculate TAM, SAM, and SOM, construct a market-sizing Excel model combining top-down and bottom-up analysis. Define assumptions for market size, customer counts, pricing, and conversion rates to defend your market size claims.

What is the difference between top-down and bottom-up market sizing?▼

Top-down market sizing calculates TAM, SAM, and SOM by narrowing down total market revenue, while bottom-up analysis builds estimates from customer counts and pricing. This Excel model triangulates both methods for robust market opportunity estimates.

How do I build a bottom-up market sizing model in Excel?▼

Build a bottom-up market sizing model in Excel by inputting customer counts, pricing structures, and conversion rates. The model constructs bottom-up estimates and compares them against top-down analysis to triangulate defendable market size metrics.

Do I need Excel to perform TAM SAM SOM market sizing?▼

Yes, Excel is required to construct the TAM SAM SOM market-sizing model. The Skill generates an Excel workbook requiring the xlsx dependency to perform top-down and bottom-up analysis for strategic market-entry and business-case development.

When should I use triangulation for market size estimates?▼

Use triangulation for market size estimates during market-entry analysis and business-case development. Comparing top-down and bottom-up market sizing results in an Excel model provides robust, defendable data for strategic decision-making.

Why does my market sizing model require a robust set of assumptions?▼

A market sizing model requires a robust set of assumptions because TAM, SAM, and SOM calculations depend on inputs like customer counts, pricing, and conversion rates. Defendable assumptions ensure accurate top-down and bottom-up triangulation.

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