Ask a contractor when cash is tightest and the answer is often the same month the schedule is fullest. It sounds contradictory until you follow the money through a single project.
Costs are front loaded
Mobilization happens first. Equipment moves to the site, temporary facilities go up, materials are staged, and crews start work. All of that is paid for before a single pay application is submitted. On a large award, mobilization can absorb more cash than a mid sized contractor keeps available.
Billing happens after the work
Progress billing means you bill for what has already been built. Then the pay application is reviewed. Then it is approved, sometimes after adjustments. Then it enters a payment cycle. Each of those steps is reasonable on its own, and together they put meaningful distance between the cost and the payment.
Retainage is money you earned and cannot use
A percentage of each progress payment is commonly held until the project is complete and closed out. For a single project it is an inconvenience. Across four or five active projects it becomes a significant amount of the company's own money sitting in someone else's account, often for months after the work is finished.
Concurrent projects multiply the effect
Each project has its own mobilization, its own billing cycle, and its own retainage. Running three at once does not simply triple the revenue. It also triples the amount of capital tied up in the middle of the cycle, which is why growth in construction so often coincides with financial pressure.
| Project stage | Cash committed | Cash returning |
|---|---|---|
| Project A: closeout | Minimal | Final payment and retainage release |
| Project B: mid construction | Ongoing payroll and materials | Progress payments, less retainage |
| Project C: mobilization | Heavy, front loaded | None yet |
Planning capital around the schedule
Contractors who manage this well tend to do a few consistent things. They know the mobilization cost of an award before they accept it. They track retainage as its own line. They put access to capital in place before it is needed rather than during the week it becomes urgent. And they treat the pay application calendar as a financial schedule rather than an administrative task.
None of that removes the gap. It makes the gap predictable, which is the difference between planning and reacting.
Questions on this topic
Is it normal for a growing contractor to be short on cash?
It is common, and it usually reflects the pay cycle rather than the profitability of the work. What matters is being able to explain the gap with a schedule of projects, receivables, and retainage.
Should retainage be included in a receivables figure?
It should be visible separately. Combining the two overstates what is collectible in the near term and makes the real cash position harder to read.