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To calculate TAM, SAM, and SOM for your startup, define your target market, gather relevant industry data, and apply both bottom-up and top-down sizing methodologies to estimate total addressable, serviceable available, and obtainable market segments.

Bottom-up market sizing builds estimates from individual unit economics and customer counts, while top-down sizing derives figures from total industry revenue and market share percentages to validate the overall opportunity scale.

Structure a market opportunity analysis for investors by generating a formatted report that presents your target market definition, data sources, TAM SAM SOM calculations, and final sizing conclusions to demonstrate business potential.

Yes, you can use this market sizing approach for a new SaaS product by defining the target businesses, gathering sector-specific data, and calculating the serviceable obtainable market to validate your product opportunity.

To perform a TAM SAM SOM calculation, gather data on target customer demographics, industry revenue figures, pricing models, and competitor market share to accurately inform your bottom-up and top-down estimates.