WORKING CAPITAL

THE BACKLOG THAT KILLS CONSTRUCTION COMPANIES.

QUICK ANSWER

Winning new work speeds up a cash crisis when your working capital can't fund the mobilization cost. Every project you sign needs cash before the first pay app collects, for labor, material, equipment, and overhead. If you win $2M in new contracts this month and don't have the working capital to fund the first 60 to 90 days of cost, then the backlog that looks like growth is a cash drain running faster than your ability to collect.

The verified civil client story in the CONTROL book is this same setup. $5M in year two revenue, growing fast, maxed lines of credit, an SBA loan, and a personal line secured against the house, all while winning work. The business was profitable on paper and the backlog kept growing. The owner was 8 days from missing payroll. Nothing in that picture was a profit problem, which is why cutting price or chasing more work would have made it worse. What was missing was the cash requirement of the backlog, calculated before the contracts got signed.

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

WHAT IT MEANS.

Backlog is the signed work you haven't built yet, and every dollar of it carries a cash requirement that comes due before the first pay app collects.

Most subcontractors think of backlog as a good thing, and it is, as long as the working capital is there to fund it. The problem is the lag. Every project in your backlog has a cash requirement that hits on day one of mobilization, not on the day the pay app gets approved.

If you're signing three projects in the same quarter, the working capital requirement stacks. The backlog grows and the cash shrinks. You look busier than ever and feel broker than ever, because you are.

Slowing down new work for 60 days to let receivables catch up is sometimes the fastest path to stability. A civil contractor we worked with did that. He paused new project starts for two months, collected $310K in overdue AR, paid off two lines of credit, and then resumed bidding from a cash positive position. The backlog felt smaller and the business was safer.

THE THREE MECHANISMS

HOW A GROWING BACKLOG DRAINS THE BANK.

01

Mobilization cost exceeds available working capital

You signed the contract and your crew starts Monday. The material supplier wants a 50% deposit on the pipe, the equipment company wants the first month's rental up front, and payroll runs in week one. Your available line of credit is $120,000 and the mobilization requirement is $180,000, so you draw everything you have and you're already $60,000 short before week two starts. Multiply that across two or three simultaneous project starts and the math breaks fast.

02

Growing revenue creates growing overhead before the revenue collects

To win $8M in work, you hire a project manager at $95,000, you add an estimator, you rent a bigger yard, and you buy a truck. Your overhead goes up $250,000 a year before the $8M of revenue turns into billings. The overhead is monthly and fixed while the revenue waits on billing cycles. If those new projects mobilize slowly or take longer than planned to reach billable milestones, you're funding the bigger overhead out of working capital for months.

03

Bidding optimistically creates work that never covers cost

In a competitive market it's tempting to sharpen the pencil to win work and fill the schedule, because a full crew beats a crew sitting idle. That isn't always true. Work that doesn't cover direct cost plus overhead plus a target net margin is cash negative from day one. If your gross margin on new work is 12% and your overhead rate is 14%, you're losing 2% on every dollar of revenue before a single thing goes wrong in the field.

THE ARITHMETIC

WHAT IT LOOKS LIKE IN DOLLARS.

One $600,000 civil project

On a $600,000 civil project, your first 6 weeks of cost might run $80,000 in labor, $120,000 in material, $40,000 in equipment cost, and $18,000 in overhead. That's $258,000 funded before your first pay app even reaches the GC's desk, and another 30 to 45 days before you see a check. To mobilize that one job, you needed $258,000 or more in working capital on day one.

THE CFOS GUARD RAILS

HOW TO KNOW IF YOUR BACKLOG IS SAFE TO FUND.

The working capital check before every signature

Before signing any new contract, CFOS runs a working capital check. It asks one question: does the available line of credit headroom plus expected AR collections over the next 60 days cover the mobilization cash requirement for this project? If yes, sign it. If not, delay the start date, negotiate a mobilization payment, or pass on the work.

WHAT YOU GET

THE OUTPUTS, NAMED.

Working capital analysis before every new contract, comparing the mobilization cash requirement against available capital
24 month cash flow projection updated quarterly with the backlog laid over it, so you see when cash goes negative before it does
Gross margin floor enforced in estimating, so no bid goes out below the minimum margin needed to cover overhead at your current revenue level
Backlog burn rate tracked monthly, comparing revenue converted to billings against new contracts signed
Line of credit sizing reviewed any time backlog grows more than 30% in a quarter, because the credit facility may need to grow with the book
Mobilization billing negotiated into every new contract SOV before signing, instead of as an afterthought once cash is already tight
$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.

Pricing

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.

A general rule for commercial subcontractors is to plan for 8 to 12% of your active backlog value in available working capital at any given time. On a $3M active backlog that's $240,000 to $360,000 in available cash and line of credit headroom. The right number inside that range depends on your payment cycles, how front loaded your SOVs are, and whether retainage is sitting in active projects. We calculate it for your book rather than using a generic figure.
Yes, or negotiate a delayed start date and use the time to build working capital out of existing AR. Turning down work feels wrong, especially when you have a crew to keep busy. But taking on an $800K contract you can't fund through mobilization puts the whole business at risk, not just that project. The right move is knowing the working capital requirement for that specific job and deciding with real numbers instead of optimism.
CFOS builds a 24 month projection that shows your bank what your working capital requirement looks like as the backlog grows, month by month. That's what a bank needs to approve an increase: not a verbal description of growth, but a projection showing cash requirements, backlog burn rate, and a repayment plan. Clean WIP reporting and a forward looking projection are the two things that get increases approved, and we produce both.
Three tiers, and which one you are in depends on how much of the work you want off your desk. Core is where you stop guessing: job costing built against the way you estimate, a 13 week cash forecast, monthly WIP, and a monthly meeting that ends in decisions, while your bookkeeper keeps doing the books. Executive is where you stop touching the books, because we run the bookkeeping and the controllership as well. Strategic is where every job shows its margin while it is still running, because the job costing and WIP platform is set up and managed for you. No payroll. No scope gaps.
Sixty days. We migrate your books back to the start of your last taxable year, set up ControlQore, and build your job costing structure from scratch. Fully operational in two months.
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.

DOES YOUR WORKING CAPITAL SUPPORT YOUR CURRENT BACKLOG?

Most subcontractors don't know the answer until payroll is in question. A 20 minute diagnostic will tell you what your backlog requires and whether you have the capital to fund it.

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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