Most financial models don't fail because of a formula error or a broken link. They fail because they don't tell a coherent story. Investors have seen thousands of models, and they can spot a patchwork of assumptions in under five minutes.
The problem usually starts with how the model was built. A founder grabs a template, fills in their numbers, and ships it. The structure doesn't match the business. The assumptions aren't linked. The revenue drivers are disconnected from the cost base. It looks like a financial model, but it doesn't behave like one.
What investors actually look for
Investors aren't checking your arithmetic. They're checking your logic. Does your revenue model make sense given your go-to-market? Do your hiring assumptions scale with your growth plan? Is your cash runway realistic, or are you hiding a funding gap behind optimistic timing?
A good model answers these questions before they're asked. A bad model forces the investor to reverse-engineer your thinking, and most won't bother.
The template trap
Templates are built to be generic. Your business isn't. When you force a SaaS business into a marketplace template, or a hardware company into a pure software model, the structure fights you at every turn. You end up with tabs that don't apply, metrics that don't make sense, and a model that raises more questions than it answers.
Radley Finance was built to avoid this entirely. Every model is structured around the actual economics of your business type — not a one-size-fits-all spreadsheet.
Getting it right before the room
The best time to stress-test your model is before it's in front of an investor. That means asking the hard questions yourself: What happens if churn doubles? What if your sales cycle is 50% longer than planned? What does your runway look like if the round takes six months instead of three?
If your model can answer those questions clearly, you're in a much stronger position. If it can't, you'll find out at the worst possible time.
