Writing on .

Revenue on paper is not cash in the bank. The gap between them is where most cash crunches actually hide — and DSO is the number that measures it.

Gross burn, net burn, and what each one signals about how long you can operate at your current shape — for businesses that aren't venture-backed.

Most owners know they have "X months of runway." Almost none trust the number — usually because it was built on a bank balance rather than on what the business has already committed to spend.