CONSTRUCTION CASH FLOW
PROBLEMS, EXPLAINED.
Construction cash flow problems almost always trace back to three causes: billing lag between cost incurred and cash collected, no rolling cash forecast to plan around known gaps, and job profitability that's tracked at closeout instead of weekly. A subcontractor can be genuinely profitable on the P&L and still run out of cash because none of those three are being managed as a system.
Cash flow problems in construction rarely mean the business isn't making money. They mean the gap between spending cash and collecting it isn't being managed, and that gap compounds across every job running at once. Mobilization costs, retainage, slow pay cycles, and unbilled change orders all pull cash out of the business before the P&L ever shows a loss. Fixing cash flow isn't about becoming more profitable, it's about building a system that sees the gap coming before it becomes a payroll problem.
THE GAP BETWEEN COST AND CASH.
Every job has a gap between when cost is incurred, mobilization, materials, labor, and when that cost gets billed and collected. On most commercial subcontractor work, that gap runs 30 to 90 days depending on the GC or owner, and it repeats on every job running simultaneously.
The gap itself isn't the problem. Not knowing how large it is, or funding it reactively off a line of credit instead of planning for it, is what turns a normal billing cycle into a cash crisis.
REACTING INSTEAD OF PLANNING.
Without a rolling cash flow forecast, most owners find out they're tight on cash the week a payroll or vendor payment is due, not a month in advance when there's still time to plan around it.
A 13-week rolling forecast turns that reactive discovery into a planned event. The gap still exists, but it's visible weeks ahead of time instead of showing up as a surprise.
TOO LATE TO ACT ON IT.
When actual cost is only compared to the bid at the end of a job, labor variance, unbilled change orders, and overhead misallocation all compound for the entire duration of the job before anyone sees the number.
Weekly cost-to-complete tracking catches the same variance while there's still time to correct staffing, billing, or scope, instead of discovering it in a closeout report with nothing left to do about it.
WHAT MATTERS MOST.
WHERE IT GOES WRONG.
Common belief: "Our clients are just slow payers."
What's actually true: Some GCs genuinely pay slowly, but most cash flow strain is a forecasting and collection cadence problem, not a payer problem. A defined follow-up schedule and a matching forecast address it either way.
Common belief: "We must not be profitable enough."
What's actually true: Cash and profit are different measurements. A profitable company with no cash forecast can still run out of cash, because the P&L shows totals, not timing.
Common belief: "We just need a bigger line of credit."
What's actually true: A bigger LOC treats the symptom. The underlying cause is usually a missing forecast that would show the LOC balance is driven by billing lag and AR aging, not insufficient credit capacity.
FREQUENTLY ASKED.
