Library/Leadership, Coaching & People Management/Strategy, Planning & GTM Leadership/Build an Investor-Ready TAM Analysis
TestedLeadership, Coaching & People ManagementQuick Win (under 10 min)

Build an Investor-Ready TAM Analysis

Calculate TAM, SAM, and SOM using both top-down and bottom-up approaches with growth projections and analyst benchmarks.

About this prompt

This prompt builds a Total Addressable Market analysis for Sales Directors and founders who need investor-ready market sizing. It uses both top-down and bottom-up approaches, produces TAM, SAM, and SOM breakdowns with dollar figures, five-year CAGR projections, and benchmarks against three analyst reports. Use it when preparing investor materials, justifying market opportunity in planning cycles, or validating whether a new segment is worth pursuing. Fill in your product description, target customer, and geography before running.Market sizing that just cites one analyst report doesn't hold up in an investor conversation. This prompt builds a defensible TAM analysis using both top-down and bottom-up logic, with explicit assumptions stated at each step — so the methodology is transparent rather than a black box. The output formats as an investor-ready market sizing slide: TAM from the total industry, SAM narrowed to your serviceable segment, SOM as your realistic capture based on your current position, plus a CAGR projection for the next five years benchmarked against analyst report comparisons. Key inputs are the product description, the target customer profile, and the geography. Use this for investor materials and strategic planning; for a more sales-focused version that segments the market by attractiveness and informs targeting decisions, use the sales-focused TAM/SAM/SOM analysis prompt instead.

The prompt

You are a McKinsey-level market analyst. I need a Total Addressable Market (TAM) analysis for [YOUR INDUSTRY/PRODUCT]. Please provide: Top-down approach: Start from global market → narrow to my segmen
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Variables to replace

YOUR INDUSTRY/PRODUCT | DESCRIBE PRODUCT | TARGET CUSTOMER | GEOGRAPHY

How to run it

  1. Copy the prompt and paste it into Claude, ChatGPT, Gemini, or Copilot — it's tuned to run in any of them.
  2. Replace the variables — swap each bracketed token for your deal's specifics. The variables list above explains every field.
  3. Make it yours — run it, keep what's strong, and tighten your inputs on the next pass. The prompt improves with your context.

What good output looks like

Make it yours

StagePre-Prospecting
SeatSales Director, Founder-Led Seller
DifficultyAdvanced
Time to valueQuick Win (under 10 min)
Works withAI-Agnostic
CategoryLeadership, Coaching & People Management
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