A financial model's job isn't to predict the future perfectly — it's to demonstrate that you understand your own business well enough to plan for it. Investors can tell the difference between the two within minutes.
Start From Real Drivers, Not a Growth Curve
The weakest models start with a revenue target and work backward. The strongest start with actual drivers — customer acquisition cost, sales cycle length, churn — and let revenue emerge from those assumptions instead of being imposed on them.
Show Your Assumptions, Don't Hide Them
Every number that feeds into the model should trace back to a stated, editable assumption. A model where changing one input breaks the formulas — or where numbers appear to come from nowhere — is the fastest way to lose an investor's confidence.
Build Three Scenarios, Not One
A base case alone reads as either overconfident or naive. Base, upside and downside scenarios show that you've thought about what could go wrong, and that the business survives more than one version of the future.
The downside case matters more than founders think
Investors often go straight to the downside scenario first — it tells them how the business behaves under stress, which is a better signal of resilience than the upside case ever is.
Keep It in Excel
Fancy modelling software impresses no one. Investors want to open the file, change an assumption, and watch it flow through — which means it needs to be in the tool they already know.
Building your first investor-ready model? Our Financial Modelling & Projections service is built around exactly this — transparent, defensible, editable.
