ProRevenue · Simulator
TAM / SAM / SOM Market Sizer
Size your market the way investors expect to see it.
Assumptions
TAM
$1,200,000,000
SAM
$360,000,000
SOM (near-term)
$36,000,000
| Layer | Customers | Annual Value |
|---|---|---|
| TAM — total market | 1,000,000 | $1,200,000,000 |
| SAM — serviceable | 300,000 | $360,000,000 |
| SOM — obtainable | 30,000 | $36,000,000 |
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Built by The Crimson Bench · Educational model, not financial advice
About the TAM / SAM / SOM Market Sizer
Build a bottoms-up market size from customer counts and spend. Returns your Total, Serviceable, and Obtainable market — the three-layer slide every deck needs.
It's built for directional planning: change any assumption and watch the whole projection move, the way a seasoned operator pressure-tests a plan before committing capital. Everything is computed live in your browser — nothing is sent anywhere.
How the TAM / SAM / SOM Market Sizer Works
The model takes 4 assumptions and returns 3 headline metrics plus a full breakdown. Here is exactly what goes in and what comes out — no black box.
The Inputs
| Assumption | Example value |
|---|---|
| Total potential customers | 1,000,000 |
| Average annual spend | $1,200 |
| Serviceable share | 30% |
| Obtainable share (of serviceable) | 10% |
Worked Example
Every figure below is produced by the live model using the example assumptions above. Change any input in the simulator to see your own numbers.
TAM
$1,200,000,000
SAM
$360,000,000
SOM (near-term)
$36,000,000
| Layer | Customers | Annual Value |
|---|---|---|
| TAM — total market | 1,000,000 | $1,200,000,000 |
| SAM — serviceable | 300,000 | $360,000,000 |
| SOM — obtainable | 30,000 | $36,000,000 |
The Operator's Read
Your realistic near-term market (SOM) is $36,000,000. Investors trust bottoms-up sizing like this far more than "1% of a huge TAM" — the SOM is the number that matters.
Assumptions & Limitations
- •The model is deterministic: it projects your inputs forward with clear arithmetic, not a Monte-Carlo or probabilistic forecast. It shows one scenario at a time — run several to bracket a range.
- •Defaults are illustrative benchmarks, not your business. Replace every field with your real numbers before drawing conclusions.
- •It abstracts away taxes, financing, seasonality, and one-off events unless a field explicitly captures them. Treat the output as a directional estimate.
- •This is an educational tool, not financial, investment, tax, or legal advice. Validate real decisions with a qualified professional.
Frequently Asked Questions
What does the TAM / SAM / SOM Market Sizer calculate?
Build a bottoms-up market size from customer counts and spend. Returns your Total, Serviceable, and Obtainable market — the three-layer slide every deck needs. It takes 4 assumptions — Total potential customers, Average annual spend, Serviceable share, Obtainable share (of serviceable) — and returns TAM, SAM, SOM (near-term), along with a full projection table you can export.
How do I use the TAM / SAM / SOM Market Sizer?
Enter your own figures in the input fields above — Total potential customers, Average annual spend, Serviceable share, and the rest. The model recalculates instantly and shows the resulting TAM and full breakdown. No sign-up needed to run it.
Is the TAM / SAM / SOM Market Sizer free?
Yes — you can run the simulator and see the headline results for free. Toolkit Pro unlocks the full projection table, Excel/PDF export, saved scenarios, and AI analysis: $180/mo, $1,728/yr, or unlock any 3 simulators for $20.
What's the difference between this and a free calculator?
A calculator answers one question. This simulator models the full picture — multiple linked assumptions, a projection table, and scenario comparison — the way an operator would build it in a spreadsheet, but instantly.
Who built the TAM / SAM / SOM Market Sizer?
The Crimson Bench's Ivy League-educated operators — the same people we deploy into C-suites. This is the self-serve version of a model they'd build inside a live engagement.
Is this financial advice?
No. The TAM / SAM / SOM Market Sizer is an educational modeling tool for directional planning — not financial, investment, tax, or legal advice. Validate any real decision with a qualified professional.
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The Crimson Bench · Est. 2002 · Founded in New York City
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