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Calculate TAM SAM SOM using bottom-up methodology: TAM = Total potential customers × Average revenue per customer (e.g., 10M businesses × $1,000/year = $10B TAM). SAM = Subset you can reach with your product (e.g., 500K small agencies = $500M SAM). SOM = Realistic capture in 3-5 years, typically 5-10% of SAM (e.g., 25K agencies × $1,000 = $25M SOM). Bottom-up is more credible than top-down because it shows you understand your customer intimately. Use tools like IdeaProof for automated, data-backed calculations.
Key Calculate Tam Sam Som Takeaways
- TAM: Total customers × ARPU (e.g., 10M × $1,000 = $10B)
- SAM: Reachable subset (geographic, product fit, capability)
- SOM: 5-10% of SAM in 3-5 years—your realistic target
- Bottom-up > Top-down: shows customer understanding
- Sources: Census data, industry reports, LinkedIn, government stats
- Update quarterly—markets shift constantly
Calculate Tam Sam Som Statistics
$1B+
TAM for VC interest
5-10%
typical SOM as % of SAM
3-5 yrs
SOM timeline
10%+
preferred market growth
Related concepts: market sizing formula, tam calculation, sam calculation, som calculation, bottom-up methodology, market size estimation, pitch deck market slide, investor presentation, market opportunity, business plan market analysis.