CASH FLOW

CONSTRUCTION CASH FLOW PROBLEMS, EXPLAINED.

QUICK ANSWER

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 the shortfalls you already know are coming, 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 distance between spending cash and collecting it's going unmanaged, and that distance compounds across every job running at the same time. Mobilization costs, retainage, slow pay cycles, and unbilled change orders all pull cash out of the business before the P&L ever reports a loss. Fixing cash flow isn't about becoming more profitable. It's about building a system that sees the squeeze coming before it becomes a payroll problem.

BY JOSH LUEBKERPublished 2026-08-06Updated 2026-08-07
THE DEFINITION

WHAT IT MEANS.

Construction cash flow problems are timing problems: the distance between when a job spends cash and when that cash gets collected, left unmanaged across every job running at once.

THE THREE CAUSES

WHY THE CASH RUNS OUT.

01

Cause 01, billing lag: the distance between cost and cash

Every job carries distance between when cost is incurred, meaning mobilization, materials, and labor, and when that cost gets billed and collected. On most commercial subcontractor work that runs 30 to 90 days depending on the GC or owner, and it repeats on every job running at the same time. The distance itself isn't the problem. Not knowing how wide 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.

02

Cause 02, no rolling cash forecast: reacting instead of planning

Without a rolling cash flow forecast, most owners find out they're tight the week a payroll or a vendor payment is due, not a month ahead when there's still time to do something about it. A 13 week rolling forecast turns that discovery into a planned event. The squeeze still exists, but it's visible weeks out instead of surfacing as a surprise on a Thursday afternoon.

03

Cause 03, job profitability tracked at closeout: 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 compound for the whole duration before anybody 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 finding it in a closeout report with nothing left to do about it.

WHAT YOU GET

THE OUTPUTS, NAMED.

13 week rolling cash flow forecast, updated and reviewed monthly, built around your actual billing cycles
AR collection cadence with follow up triggers at 30, 60, and 90 days, so billing lag doesn't stretch further unnoticed
Weekly job cost variance tracking, not a closeout only comparison to the bid
WIP schedule updated monthly to catch overbilling or underbilling before it compounds
LOC draw and paydown schedule tied to the forecast, not to whatever is convenient that week
$10.7M+
Client AR Recovered Since 2023
48
Active Trade Specializations
60 DAYS
Average Onboarding Time
PRICING

FLAT MONTHLY FEE. NO SURPRISES.

Three tiers, priced by your trailing twelve month revenue. Which one you're in depends on how much of the work you want off your desk. No hourly billing, no payroll, and no add-ons.

Last 12 months revenueMonthly fee
Up to $1M$1,900 to $2,900
$1M to $3.5M$2,600 to $3,900
$3.5M to $6.5M$3,800 to $5,700
$6.5M to $9.5M$5,100 to $7,100
$9.5M to $12.5M$6,100 to $8,500
$12.5M to $15.5M$7,400 to $11,000
$15.5M to $18.5M$9,400 to $13,500
$18.5M+Quoted individually

Range reflects the three tiers below. Which one you're in depends on how much of the work you want off your desk. No payroll. No hidden line items.

Core

You stop guessing.

You get the CFO work. Job costing built against the way you estimate, a 13 week cash forecast, monthly WIP, and a meeting every month that ends in decisions rather than a report.

Your bookkeeper keeps doing the books.

Executive

You stop touching the books.

Everything in Core, and we run the bookkeeping and the controllership as well. Nobody in your office is answering coding questions or chasing a reconciliation at month end.

We do the books. No payroll.

Strategic

Every job shows its margin while it's still running.

Everything in Executive, plus the job costing and WIP platform set up, loaded with your cost codes, and managed for you every month. You never have to learn it.

We do the job costing.

COMMON QUESTIONS

FREQUENTLY ASKED.

Because profit and cash timing are different things. Billing lag, no rolling cash forecast, and job profitability tracked only at closeout can each drain cash from a genuinely profitable business. The P&L doesn't report the timing problem underneath, because the P&L was never built to be a timing document.
Billing lag, the distance between when cost is incurred and when cash is collected, is the most common cause underneath everything else. It's normal and expected on commercial work, but without a forecast to plan around it, it turns into a recurring crisis.
Build a 13 week rolling cash flow forecast around your actual billing cycles, put a defined AR collection cadence in place, and track job cost variance weekly instead of waiting for closeout. All three together address the causes rather than the symptoms.
Usually not on its own. A larger line can buy breathing room, but without a cash forecast the same billing lag and collection issues will max it out again. The forecast is what turns the line of credit back into a temporary bridge instead of a permanent balance.
SPM builds the first 13 week rolling cash flow forecast within the standard 60 day onboarding window, using your actual billing cycles and current job data from day one.
WHAT THIS TIES INTO
Josh Luebker, The Construction CFO
Josh Luebker
FRACTIONAL CFO · THE CONSTRUCTION CFO

Former commercial project manager and master electrician: 150+ projects worth $2.1B combined, from $50,000 to $300M. Now fractional CFO to commercial subcontractors.

WHICH OF THE THREE IS COSTING YOU CASH?

Bring your last full year, your current AR aging, and one open job. We will tell you which of the three causes is doing the damage before we talk about working together.

You don't hire a CFO because it's safe, you do it because the real risk isn't having one.
Book a 20 minute diagnostic

20 minutes. No sales pressure. We will tell you exactly what's broken before we talk about anything else.

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