How to Include Market Sizing in Your Pitch Deck

Investors decide in seconds whether your opportunity feels big enough—and grounded enough—to merit a second meeting. A clear TAM → SAM → SOM story turns curiosity into confidence, especially when backed by census-grade data from Olympus Intel Model Builder.

Run your market model for $79

Why market sizing matters

Market sizing gives investors a fast, apples-to-apples sense of how big you can become—and how soon. A well-argued TAM, SAM & SOM shows you’ve done the homework outlined in our plain-English TAM / SAM / SOM playbook and can defend every assumption in Q&A.

Where to place market sizing in your deck

1. Market Opportunity slide – lead with headline TAM to frame the prize.
2. Business Model slide – tie SAM to revenue streams and pricing (see bottom-up sizing guide).
3. Financial Projections slide – anchor revenue forecasts in a realistic SOM trajectory.

Visualising TAM, SAM & SOM

Numbers alone rarely persuade—presentation counts. Follow these tips:

• Use simple charts – waterfall or stacked-bar visuals keep TAM → SAM → SOM clear.
• Highlight assumptions – footnote geography or NAICS filters; link to NAICS code guide.
• Show growth levers – overlay milestones where SOM expands (new geos, adjacent segments).

Common mistakes to avoid

• Inflating TAM – savvy VCs cross-check with public datasets; use Census or industry reports.
• Ignoring SOM – investors fund traction, not theory; quantify the piece you can win first.
• Missing sources – include data citations (Olympus Intel auto-generates them).
• Over-busy visuals – whitespace sells clarity; keep fonts bold and legible.
• No strategic link-back – tie each market layer to go-to-market actions.

Next steps

Ready to move from ball-park guesses to investor-grade numbers? Launch Model Builder, pick your segments, and have a defendable market slide in under five minutes.