Recurring cash flow problems in construction have structural causes: underbilling not caught by a WIP schedule, AR not collected systematically, no 13-week cash flow forecast to see shortfalls before they land, overhead rate not built into bids, and GC billing cutoffs missed. This page covers the five systems that eliminate recurring cash flow problems and why each one has to be running consistently to work.

CASH FLOW PROBLEMSHOW TO STOP THEM 13-WEEK FORECASTWIP SCHEDULE AR COLLECTIONSCONSTRUCTION CASH FLOW CASH FLOW PROBLEMSHOW TO STOP THEM 13-WEEK FORECASTWIP SCHEDULE AR COLLECTIONSCONSTRUCTION CASH FLOW
THE CONSTRUCTION CFOSchedule a Free Call
Cash Flow Management

Stop the Cash Flow Cycle. For Good.

Cash flow problems in construction aren't bad luck. They're the predictable output of missing systems — underbilling that isn't caught, AR that isn't collected, shortfalls that aren't seen until they land. Five systems eliminate them. Not one. Not three. All five, running consistently, every month.
Published: May 2026Updated: May 2026
Why Cash Flow Problems Recur

The Gap Is Structural.

Construction has a built-in cash flow gap: costs go out immediately, revenue comes back slowly. Labor and materials hit the account on day one. The pay application goes out at the end of the month. Collections take 30–90 days after that. A $5M contractor may have $400K–$700K of costs incurred before a dollar of the corresponding revenue is collected. That gap doesn't go away. It gets managed or it causes crises.
01

Underbilling Compounds It

Every month that a pay application isn't submitted on time, the gap widens. Underbilling across three jobs adds $30K–$100K to the gap with no action required other than inaction. The WIP schedule is the tool that catches it — but only if it's running.

02

Slow AR Widens It

Every 10 days added to average collection time at $3M revenue is roughly $80–100K of additional cash tied up in the AR pipeline. Without a formal collections process — follow-up at 30 days, demand at 45, lien at 60 — GCs pay at their own schedule.

03

No Forecast Means No Warning

Without a 13-week cash flow forecast, a shortfall lands the day it happens. There's no time to draw the LOC, accelerate an AR collection, or delay a payable. The crisis arrives as a surprise even when it was fully predictable three weeks earlier.

The Five Systems

Build These. Run Them Monthly.

Each of these systems does a specific job. Miss one and the others can't compensate. All five running consistently is what separates contractors who have recurring cash flow problems from contractors who don't.

1. Monthly WIP Schedule

Run a WIP schedule at month-end against every active job. Any underbilled job gets a pay application submitted before the GC's billing cutoff. This single system — done consistently — eliminates the most common source of unplanned cash gaps. Use the free WIP schedule template to start.

2. Formal AR Collections Process

Written follow-up at 30 days. Formal demand letter at 45 days. Preliminary lien notice at 60 days. Every invoice, every time, automatically. GCs respond to documented process and lien exposure in a way they don't respond to phone calls. Set up the process once and let it run.

3. 13-Week Rolling Cash Flow Forecast

Every Sunday, project the next 13 weeks of expected inflows (AR collections, upcoming pay app payments) and outflows (payroll, material invoices, equipment, loan payments). Flag any week where the projected balance drops below your minimum operating reserve. Act on shortfalls when they're three weeks out — not the day they land.

4. Current Overhead Rate in Every Bid

Recalculate your overhead rate quarterly. Update your bid markup every time. If your overhead is 16% and you're pricing in 12%, every job ships with a 4-point margin deficit that the cash flow forecast can never compensate for. The pricing problem has to be solved at the bid — not managed downstream.

5. Billing Calendar with Hard Deadlines

Every GC has a billing cutoff date. Build a calendar with every GC's cutoff date for the next 90 days. Treat those dates as hard deadlines — not targets. A pay application submitted one day after the cutoff waits another 30 days. At 1.5% monthly cost of capital on $150K, a missed cutoff costs $2,250. Build the calendar. Hit the dates.

Frequently Asked Questions

Common Questions.

Five systems running consistently: monthly WIP schedule to catch underbilling, formal AR collections process with lien rights escalation, 13-week rolling cash flow forecast, overhead rate recalculated quarterly and built into every bid, and a billing calendar that treats GC cutoff dates as hard deadlines. Miss one and the others can't compensate.

The gap between when costs go out and when cash comes back is structural — labor and materials are immediate, collections take 30–90 days. A $5M contractor may have $400–700K of costs incurred before a dollar of the corresponding revenue is collected. Without a cash flow forecast and aggressive AR management, that gap produces recurring near-misses regardless of revenue.

A weekly projection of every expected cash inflow and outflow for the next 13 weeks. The value is visibility — seeing a shortfall three weeks before it lands gives you time to act. A LOC draw, an accelerated AR collection, a delayed payable. Seeing it the day it hits gives you nothing. Schedule a call — SPM runs 13-week forecasts for Executive Financial clients every month.

Josh Luebker — Fractional CFO, The Construction CFO
Josh Luebker
Fractional CFO · The Construction CFO

Former commercial construction project manager and master electrician. Managed 150+ projects totaling $300M+. Now fractional CFO for commercial subcontractors doing $1M–$12M. About Josh →  |  LinkedIn →

Related Resources
Tool
WIP Schedule Template
The free template — start catching underbilling this month
Crisis Triage
Can't Pay Suppliers
In a cash crisis now? Here's the immediate triage
Tool
Overhead Rate Calculator
Verify your bid markup is actually recovering overhead
Case Study
Concrete Contractor AR Recovery
$140K recovered, collection days cut from 87 to 42
Financial Diagnosis
Cash Gone at End of Month
Month-end cash disappearance — what's causing it
Get Started
Schedule a Free Call
SPM builds and runs all five systems for you every month

CASH FLOW PROBLEMS
DON'T FIX THEMSELVES.

SPM builds the five systems and runs them every month. You run the business.

Schedule a Free Call →
THE CONSTRUCTION CFO
WIP TemplateOverhead CalculatorFinancial Q&ASchedule a CallJosh@ConstructionCFO.net
© 2026 SULPHUR PRAIRIE MANAGEMENT · SULPHUR ROCK, AR
0