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Growth-assumption sanity check calculator

Type in a monthly growth rate and see whether it actually holds together with the team you have to deliver it. A percentage feels steadier than it really is.

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Be honest about your real capacity.

15% / mo compounds to

5.4×

  • Plan breaks atmonth 3
  • Peak new custs / mo needed589 vs 150

Ambitious — know the month

It works early, then around month 3 the customers you'd need overtake the 150/mo you can win. That's a hiring-and-fundraising trigger.

Benchmark Sustained 15%+/mo is top-decile, and rare

Assumed growth vs what your capacity delivers

The gap between the lines is the part of your forecast that isn’t real yet.

$0$107k$214kbreaksM0M6M12
Growth you assumed What capacity delivers

Why it matters

When you raise, the first thing a sharp investor pressure-tests is your growth assumption — not the ambition, but whether your hiring and sales capacity can actually deliver it. A rate that doesn't reconcile with your own resourcing is a fast way to lose a room.

Stop recalculating by hand

Radley Finance keeps this metric — and every other — live from one model, with the same benchmarks built in. Investor-ready in under an hour.

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