Why Cash Flow — Not Profit — Kills Contractors
Plenty of profitable construction companies go broke. Why? They run out of cash. Profit is an accounting result on paper; cash is what actually pays your people and suppliers.
The difference
- Profit — revenue minus costs, earned over the job.
- Cash — money actually in the bank, right now.
You can show a profit on a job and still be unable to make payroll, because the money is tied up in work you've done but haven't been paid for yet. Growth makes it worse — every new job consumes cash before it returns any.
Going Deeper (Intermediate)
Profit and cash are not the same thing. Profit is an accounting result over time; cash is what's actually in the bank today. A contractor can be profitable on paper and still go broke — because the money goes out (labor, materials) long before it comes in (draws, retainage).
This is why "we have $3M in backlog" doesn't pay Friday's payroll.
Advanced / Pro-Level
The killer dynamic: growth consumes cash. Every new job you start must be front-funded — you pay weekly labor and material now, bill at month-end, collect 30–60 days later, and retainage is held to the very end. Faster growth = more jobs draining cash at once = the classic "profitable company that runs out of money."
Pros separate the two reports: a P&L for profit and a cash-flow forecast for survival, and they manage working capital (the cash cushion) as carefully as margin.
Practice Challenge
Your P&L shows $200k profit this quarter, yet you can't make payroll. Name two construction-specific reasons. (Answer: cash is tied up in retainage and in underbillings/AR (work done and costs paid but not yet collected) — plus new jobs front-funded with cash. Profit is real; the cash just hasn't arrived.)
In Practice
A contractor shows a profit on paper but can't make payroll — the money's tied up in unpaid completed work. Profit isn't cash; cash is what pays the bills.
Common Mistakes to Avoid
- Confusing profit with cash in the bank
- Growing fast without funding the cash gap
- Ignoring receivables
Takeaway: You can be profitable and still go broke — cash, not profit, pays the bills.
Educational content — not legal, financial, or accounting advice. Run your numbers with your CPA.