Now let’s talk about why 1% of $100M isn’t actually the win you think it is.
Last week, we walked through how to calculate your Total Addressable Market — the top-down approach, the bottom-up approach, and why the number has to land between $100 million and $30 billion to be worth your time.
A lot of you ran the math. Good. That’s exactly what we wanted.
But here’s what we didn’t tell you last week. Because we wanted you to feel the problem before we handed you the fix.
A $100 million TAM sounds huge. It sounds like more than enough. And then you apply the One Percent Rule — the assumption that you can realistically capture one percent of your market — and you land at one million dollars in potential annual revenue.
One million dollars.
That is the floor. That is the threshold that tells you whether you have a scalable business or an expensive side hustle. But here’s what trips people up: one million dollars in revenue is not one million dollars in your pocket. Not even close.
The number behind the number
We watched a woman walk into one of our sessions practically glowing. She’d done the homework. Her TAM was $150 million. She’d applied the One Percent Rule. She was looking at $1.5 million in potential revenue.
She thought she was done. She wasn’t done.
Because $1.5 million in revenue, in her business model, meant roughly $300,000 in take-home profit after cost of goods, delivery, marketing, and overhead. Enough? Maybe. But not the number she had in her head when she came in.
The TAM calculation tells you whether the market is big enough. It does not tell you whether the business is profitable enough.
That’s a second question. And it’s the one most people never ask.
Revenue is vanity. Profit is sanity. Cash flow is reality.
So once you have your TAM, and once you’ve applied the One Percent Rule to get your revenue potential, the next move is simple and ruthless: work backwards from that number and figure out what’s actually left.
Why we set the floor at $100 million — and what happens just below it. Let’s do the math together, because this is where the trap lives.
Say your TAM is $80 million. Below our threshold, but let’s follow it through. One percent of $80 million is $800,000 in potential revenue. That sounds like a business. But run it through a realistic cost structure — delivery costs, your own time, any team, any marketing — and you might be looking at $150,000 to $200,000 in actual profit. If you’re working full time on this.
That’s a job. A hard job. Not a business with an exit.
Now run the same exercise at $200 million TAM. One percent is $2 million in revenue. The same cost structure leaves you with $400,000 to $600,000. Now you have room to hire. Room to invest in growth. Room to build something that runs without you.
The gap between a $100 million TAM and an $80 million TAM looks small on paper. In practice, it’s the difference between building equity and running a treadmill.
The One Percent Rule isn’t just a revenue test. It’s a profitability stress test. If 1% of your market can’t clear $1M in revenue, the math rarely works in your favor — no matter how much you love the idea or how hard you’re willing to work.
The other trap: a TAM that’s too big
We said last week that if your TAM clears $30 billion, you need to narrow down. Let’s talk about why.
A $30 billion market sounds like an embarrassment of riches. But think about who else is in that market. You’re not competing against other scrappy mom entrepreneurs with lean teams. You’re competing against companies with eight-figure marketing budgets, established distribution channels, and name recognition your target customer already trusts.
One percent of $30 billion is $300 million. You are not going to capture $300 million in your first five years. And more importantly, trying to be relevant to a $30 billion market means trying to be relevant to everyone. Which means being compelling to no one.
We learned this at Clermont when we first mapped our TAM against the broader financial communications industry. The number was enormous. So were our competitors — the PR mega-firms, the global investor relations consultancies, the investment banks doing advisory work on the side.
We didn’t win by going after the whole market. We won by owning a slice of it so completely that when our specific problem showed up on a CFO’s desk, our name was the one they thought of. ESG communications for small- and mid-cap public companies. That was it. Specific enough to be unchallenged. Big enough to build a real business.
Narrow the niche. Own it completely. Then expand from a position of strength.
So, what does a good number actually look like?
Here’s the framework we use. Not as a rigid formula, but as a sanity check before you go any further.
- TAM between $100M and $30B. You’ve already run this. If you haven’t, go back to last week’s post and do it.
- 1% of your TAM clears $1M in revenue. This is your floor. Not your goal — your floor. You need room to operate below your potential before you can grow toward it.
- That $1M in revenue leaves meaningful profit after your real costs. Don’t use fantasy cost assumptions. Use what you actually know about delivery, overhead, and your own time. If the margin is thin, the model has a problem.
- The customer you’re selling to can actually afford you. TAM calculations fall apart when the buyer persona doesn’t have the budget. Know what your customer spends on solutions like yours today.
If all four of those are true, you have a thesis worth pursuing. Not a guarantee. A thesis.
That’s all you need at this stage. Enough signal to take the next step.
The question we get every time
“What if my TAM is right at the edge? $105 million? Is that enough?”
Honestly? It depends on your margins. A $105 million TAM with a high-margin service model is a very different situation than a $105 million TAM with 20% margins and high customer acquisition costs. The number isn’t the final answer. It’s the conversation starter. What the One Percent Rule does is force you to have that conversation with yourself before you’re six months in, out of savings, and wondering what happened.
We’ve sat across from too many women who skipped this step. Not because they were reckless. Because they were excited. Because the idea felt right and the passion was real and it seemed almost pessimistic to run the math before they started.
Running the math before you start isn’t pessimism. It’s respect — for your idea, for your time, and for everything else you’re juggling while you build this.
Do the math before you fall in love with the answer.
