Pillar Guide · Lead Generation Consulting℠
What Is Total Addressable Market (TAM)?
Total addressable market (TAM) is the total revenue opportunity available if you captured every possible customer for your product. It sets the ceiling that your ICP narrows to a workable target.
What TAM measures
TAM is the full size of market demand for your offering — the biggest version of the opportunity, before any targeting.
TAM, SAM, and SOM
TAM is the whole market; SAM is the slice you can serve; SOM is the share you can realistically win. Each narrows the last.
TAM vs ICP
TAM sizes the opportunity; the ICP defines who to actually pursue first. You prospect the ICP, not the entire TAM.
Key takeaways
- TAM is the total market opportunity
- It's the ceiling, not the target
- TAM narrows to SAM, then SOM
- You prospect the ICP within the TAM
Related guides & services
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FAQ
Common questions.
How do you calculate TAM?
Estimate the total number of potential customers times the average revenue each would generate.
What's the difference between TAM and ICP?
TAM sizes the whole opportunity; the ICP defines the best-fit accounts to pursue within it.