SMB Tools / Self-Fundable Growth Calculator

How fast can you afford to grow?

Growth consumes cash before it produces it. Every new sale ties up money in receivables and inventory first. This tool shows the growth rate your own cash flow can fund, and how much outside cash a faster target would need.

Your business

Annual revenue
$
Profit margin before your pay
%
What you pay yourself per year
$

Your cash cycle

Days customers take to pay you
days
Days stock sits before it sells
days
Days you take to pay suppliers
days
Cost of goods as a share of sales
%
Cash per new $1 of revenue12.3c trapped

Your plan

Target growth rate
%
Growth capex per new revenue dollar
$
Self-fundable growth rate
32.4%
Needs outside cash$33,973 short at 60%

Your cash can fund about 32.4% growth a year. Your 60% target needs $33,973 a year of outside cash on top of what the business throws off. Line it up before you push.

Cash per $1 growth
12.3c trapped
Retained cash / yr
$40,000
Outside cash at 60%
$33,973
Retained cash / yr$40,000
Cash your 60% growth needs-$73,973
Surplus after growth-$33,973
What one change does
ChangeGrowth you can fund
As entered32.4%
Collect 15 days faster48.7%
Hold 15 days less stock40.6%
Pay suppliers 15 days later40.6%
Lift the margin 2 points48.7%
Take $10,000 less a year40.6%

Each row changes one thing and holds the rest. Collecting faster and paying later are the cheapest levers: they cost nothing but a conversation.

Growth consumes cash before it produces it. This is the rate your own cash covers; beyond it you need financing lined up before you grow, not after. Based on the self-financeable growth framework (Churchill and Mullins, HBR 2001), simplified to annual figures.

A planning estimate, not financing advice. Model the real numbers with your accountant. Map the months in the cash flow forecaster →