How to Calculate Your Total Addressable Market and Make a Great TAM Slide for Investors

I’ve seen hundreds of startup pitch decks and have found total addressable market (TAM) slides to be among the most frequently mis-executed. I get the sense they are often included as a formality in an attempt to get VCs to check a mental box and continue on hearing about other important things: the product, the team, the progress, the go-to-market, etc.
 
In this piece, I’m going to walk through the importance of thinking through TAM in a structured way, and present some ideas on how a more thoughtful TAM analysis and slide can improve a startup’s pitch as well as its business decisions.

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