# Total Addressable Market

*Startups & Venture Capital — Finicade finance glossary*

TAM is the total revenue available if a product captured 100% of its market, narrowed to serviceable and obtainable subsets. Venture investors care because the power law requires outcomes only large markets can produce. TAM is also the most inflated number in any pitch deck: the credible version is built bottom-up from customers times price, not top-down from an industry report.

**Also known as:** TAM, SAM, SOM, market size

**Related terms:** [Venture Capital](https://finicade.com/glossary/venture-capital), [Series A](https://finicade.com/glossary/series-a), [Unit Economics](https://finicade.com/glossary/unit-economics), [Power Law](https://finicade.com/glossary/power-law), [Pro Forma](https://finicade.com/glossary/pro-forma)

Source: https://finicade.com/glossary/total-addressable-market