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THE CONSTRUCTION CFO FRACTIONAL CFO FOR COMMERCIAL SUBS RUN ON CFOS $1M TO $12M REVENUE 24 TRADE SPECIALIZATIONS 60 DAY ONBOARDING THE CONSTRUCTION CFO FRACTIONAL CFO FOR COMMERCIAL SUBS RUN ON CFOS $1M TO $12M REVENUE 24 TRADE SPECIALIZATIONS 60 DAY ONBOARDING
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OPERATING MODEL · CFOS MODULE 06

How to Read Construction Financial Statements.

DIRECT ANSWER

Commercial subcontractor owners need to read four documents fluently: the profit and loss statement (P&L), the balance sheet, the cash flow statement, and the work in progress (WIP) schedule. Each one answers a different question. Each one has construction-specific quirks that generic accounting knowledge misses. Reading all four takes about five minutes once you know what to look for.

Most subcontractor owners can read a bank statement. Fewer can read a P&L. Almost none can read a WIP schedule. This page is the construction-specific orientation that closes that gap.

BY JOSH LUEBKER UPDATED: JUNE 2026
DOCUMENT 1

The Profit and Loss Statement. Did You Make Money This Period?

The P&L answers one question: in this period, did revenue exceed costs, and by how much?

On a commercial subcontractor P&L, the rows you read in order:

Revenue. Total billings or earned revenue for the period. Under percentage of completion accounting, this is earned revenue, not what you actually invoiced. A sub with $10M of contracts billed for the month but only 60% of the work done shows $6M of earned revenue, not $10M.

Cost of revenue (direct job cost). Labor, materials, subs, equipment, and other costs that belong to specific jobs. The CFOS target is to see this line broken into its components so you can read each one separately.

Gross profit and gross margin. Revenue minus direct cost. For commercial subs, the CFOS target is 22% to 30% gross margin depending on trade. Concrete at $1M to $5M targets around 21% gross. Electrical at the same band targets 25% gross.

Overhead (G&A). Office rent, owner salary, controller, admin staff, software, insurance, professional fees. For a healthy commercial sub at $5M to $10M, target overhead is 13% to 15% of revenue.

Net profit and net margin. Gross profit minus overhead. The CFOS target net for a $12M sub is 12%. Most commercial subs in the $1M to $12M range run 4% to 8% net.

DOCUMENT 2

The Balance Sheet. What Do You Own, What Do You Owe?

The balance sheet is a snapshot of the business on one specific day. Assets on the left, liabilities and equity on the right. They must balance.

Construction-specific items to read carefully:

Accounts receivable. Money owed to you. Aged 0 to 30, 30 to 60, 60 to 90, and over 90. The over-90 bucket is the warning sign. If more than 15% of AR is over 90 days, you have a collections problem.

Retainage receivable. Money your GCs are holding back, typically 5% to 10% of pay apps. Usually a separate line from AR. Read this as locked cash that returns at substantial completion.

Underbillings (costs in excess of billings). Current asset. Costs you have incurred but not yet billed. A growing underbillings line means you are funding the project ahead of pay app submission. Common during mobilization, normal in moderation, dangerous if it grows month over month without resolving.

Overbillings (billings in excess of costs). Current liability. You have billed ahead of the work performed. Good for cash flow, fine in moderation, a red flag if it grows because it represents future revenue that has already been collected.

Line of credit drawn. Current liability. Reading the LOC balance over the last six months tells you whether the business is generating cash or consuming it. A consistently growing draw is a cash flow problem hiding behind operations that look profitable.

DOCUMENT 3

The Cash Flow Statement. Where Did the Cash Actually Go?

The cash flow statement reconciles net profit with actual cash movement. Net profit can be positive while cash is bleeding out, and vice versa. The cash flow statement is the document that explains the disconnect.

Three sections:

Cash from operating activities. The money your operations generated or consumed. Net profit plus depreciation and amortization, adjusted for changes in working capital (AR, AP, inventory). A healthy commercial sub generates positive cash from operations consistently. Negative is the warning sign.

Cash from investing activities. Money spent on equipment, vehicles, real estate. Usually negative for a growing sub buying capital assets.

Cash from financing activities. Money raised or returned through debt and equity. LOC draws, term loan payments, owner contributions or distributions.

The most useful read: if net profit is positive but cash from operations is negative, the cash is sitting in AR or underbillings. The business is profitable on paper, broke in the bank. That diagnosis is the entire pattern The Construction CFO solves.

DOCUMENT 4

The WIP Schedule. Which Jobs Are Actually Making Money?

The WIP schedule is the construction-specific document. No other industry has it. Every commercial subcontractor needs to read it.

Each row on the WIP is one job. The columns:

Contract value. Total contract amount including approved change orders.

Cost incurred to date. What has been spent.

Estimated cost to complete. What is left to spend. This is the column that matters most and the one most subs do not update honestly.

Percent complete. Cost incurred divided by total estimated cost.

Earned revenue. Percent complete times contract value.

Billings to date. What you have invoiced.

Over/underbilled. The difference between earned revenue and billings.

The two diagnostic questions: (1) Is any job showing earned revenue more than 10% below billings? That is overbilling, which means cash is good now but earnings are owed. (2) Is the estimated cost to complete moving up month over month on the same job? That is profit fade developing in real time.

Quotable benchmark: the top quartile of commercial subs runs profit fade at less than 2% across their portfolio. The bottom quartile runs 6% or more. Reading the WIP monthly catches it early enough to fix.

QUESTIONS OWNERS ASK

Profit and loss statement (P&L), balance sheet, cash flow statement, and work in progress (WIP) schedule. The first three exist in every industry. The WIP schedule is construction-specific and the most important for understanding job-level profitability. Reading all four takes about five minutes once you know what to look for.

Earned revenue is the revenue you have actually earned by completing work under percentage of completion accounting. Billings is what you have invoiced to the GC. A sub with $10M of contracts billing for the month but only 60% of work done shows $6M earned revenue and could have billed any amount depending on pay app timing.

Look at four lines. Accounts receivable aging (more than 15% over 90 days signals a collections problem). Retainage receivable trend. Underbillings (growing month over month is a warning). LOC balance over six months (consistently growing means the business is consuming cash even if the P&L looks profitable).

Three common causes. Cash is sitting in AR over 60 days that has not been collected. Cash is sitting in underbillings (work done but not yet invoiced). Or the P&L is being run on accrual or POC basis while you are reading the bank statement on cash basis. The cash flow statement is the document that reconciles the two.

The work in progress schedule lists every active job with contract value, cost incurred, estimated cost to complete, percent complete, earned revenue, billings to date, and over/underbilled position. It is the construction-specific document that shows which jobs are actually making money. Bonding agents and banks read it every month. So should the owner.

P&L, balance sheet, and cash flow monthly, within 10 business days of month close. WIP schedule monthly, reviewed in a structured WIP meeting on the first Monday after the tenth. The cash flow forecast updated weekly looking 13 weeks forward. The Construction CFO builds this cadence into every Executive Financial engagement.

Josh Luebker, The Construction CFO
Josh Luebker
FOUNDER · THE CONSTRUCTION CFO

Former commercial construction project manager and master electrician. Managed 150+ projects totaling $2.1B+ including data centers, military bases, hospitals, and high-rises. Founder of Sulphur Prairie Management, the firm operating CFOS for 24 trade specializations across the U.S. and Canada. About Josh →  |  LinkedIn →  |  YouTube →

RELATED IN THE SYSTEM
MODULE 06
Operating Model Definition
The CFOS module that defines who reads which statement, when, and what they do with it.
DOCUMENT
WIP Schedule Explained
Deeper read on the construction-specific schedule and how to interpret each column.
METHOD
Percentage of Completion
The accounting method underneath every line on the P&L and WIP.
CASH FLOW
Cash Conversion Cycle
How cash moves from job costs out to GC payment back, and where the gap appears.
DASHBOARD
CEO Report KPIs
The summary dashboard that pulls signal from all four statements onto one page.
SYSTEM
Run on CFOS
The full Construction Financial Operating System: six modules and how they connect.

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Josh Luebker, The Construction CFO
JOSH LUEBKER
FOUNDER & CFO

Master electrician and former project manager, 150+ projects and $2.1B+ in commercial work. Now runs the numbers for subcontractors instead of standing on the job site.

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Stewart Bohrer, The Construction CFO
STEWART BOHRER
VP OF OPERATIONS

Keeps the system running day to day: job costing, WIP, monthly financial reviews, and the follow-through between calls. Josh handles onboarding.

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