Work out total addressable market instantly with clear inputs, formula shown and shareable results.
Bottom-up market sizing multiplies the count of potential customers by realistic annual spend, which is far more defensible than taking a share of a published industry figure. Applying an adoption ceiling keeps the number honest.
Bottom-up TAM
TAM = potential customers × average annual spend; realistic = TAM × adoption ceiling
Figures are estimates based on the inputs given. Marketing performance, platform fees and conversion behaviour vary by audience, channel and season. Use this as a planning guide, not a forecast.
Because every assumption is visible and testable. Top-down percentages of huge markets convince nobody.
Nothing on its own — it is a scale check, not a plan. Growth must be built from a real acquisition model.