TAM Input Form
Use segmented demand and pricing data for stronger market sizing.
Example Data Table
| Segment | Accounts | ARPA | Serviceable % | Penetration % |
|---|---|---|---|---|
| SMB | 1,200 | $800 | 55% | 8% |
| Mid-Market | 350 | $6,000 | 55% | 8% |
| Enterprise | 80 | $45,000 | 55% | 8% |
Formula Used
TAM = Sum of all segment accounts × annual revenue per account.
SAM = TAM × serviceable market percentage.
SOM = SAM × expected penetration percentage.
Forecast TAM = TAM × (1 + annual growth rate)years.
Revenue Goal = TAM × target market share percentage.
Customers Needed = Revenue Goal ÷ weighted average annual revenue per account.
How to Use This Calculator
- Choose your reporting currency.
- Enter serviceable market, expected penetration, growth, and share goal values.
- Add account counts and annual revenue per account for each segment.
- Click Calculate TAM to show the market summary above the form.
- Download CSV for spreadsheet analysis or PDF for reporting.
Why Marketers Use TAM Models
TAM helps marketing teams size opportunities before budgets, campaigns, and sales targets are finalized. Segment-based estimates improve planning because they connect revenue assumptions to real market groups.
This page supports top-level planning, scenario analysis, territory prioritization, launch forecasting, and investor-ready revenue modeling.