Break-even & cash

Cash Runway Calculator

If nothing changes, when do I run out of cash?

Profit and cash are different questions. This one is cash: what you have, what comes in, what goes out, and how long that lasts.

Your numbers

Pre-filled with a worked example so you can see how it behaves. Type over any field with your own figures. Nothing you enter is sent anywhere.

The answer

How this is calculated

Net weekly cash = weekly sales − weekly cash out

When negative, runway in weeks = cash available ÷ weekly shortfall

What this does not tell you

This is a straight-line model. It does not know about a quarterly tax payment, a seasonal dip, or a supplier tightening terms.
Set aside sales tax and payroll tax as cash out even though you have collected it. It is not yours to spend.