What a Construction CFO Actually Does.
A construction CFO owns the financial system that tells you whether you are making money and whether you will have cash. That means job costing, WIP schedules, a 13-week cash forecast, the real overhead rate, estimate-to-actual alignment, and a monthly CEO report. A bookkeeper records the past. A CPA files taxes. A CFO runs the numbers forward.
If you have a bookkeeper and a CPA and still cannot say which jobs make money, you are missing the CFO function. This page lays out exactly what a construction CFO owns, how the role differs from a bookkeeper, controller, and CPA, and when a subcontractor actually needs one.
The Numbers That Predict The Future.
A construction CFO is the financial executive who owns job costing, cash forecasting, and financial strategy for a contractor, distinct from a bookkeeper who records transactions or a CPA who files taxes. The CFO owns six functions a bookkeeper and CPA do not: job costing, WIP schedules, cash forecasting, the real overhead rate, estimate-to-actual alignment, and the monthly CEO report.
Most subcontractors have a bookkeeper and a CPA and still cannot answer the only question that matters: are we making money, and will we have cash next month. That gap is the CFO's job. The bookkeeper records the past. The CPA files taxes. The CFO runs the numbers forward and turns their data into decisions.
The test is simple. Ask your project manager where the money is going on a job right now. If the answer is a live screen in 30 seconds, you have a working system. If it is ask accounting, wait for a report, and manipulate a spreadsheet, you do not have a CFO function. You have a bookkeeper and a hope.
CFO vs Bookkeeper vs Controller vs CPA.
Four roles, four jobs. They are not interchangeable, and most subcontractors are missing the one at the top.
| Role | What They Do |
|---|---|
| Bookkeeper | Records transactions, codes expenses, runs payroll entry, reconciles accounts. Looks backward. |
| Controller | Owns the close, accuracy, and reporting. Makes sure the numbers are right and on time. |
| CPA | Files taxes, ensures compliance, advises on tax structure. Engaged seasonally, not embedded. |
| CFO | Owns job costing, WIP, cash forecasting, overhead rate, estimate alignment, and strategy. Looks forward. |
The bookkeeper and CPA stay. The CFO is the layer that turns their data into decisions about pricing, hiring, equipment, and cash.
The Symptoms, Not The Revenue.
Revenue is a rough signal, most subcontractors need a real CFO function somewhere between $1M and $3M, but the symptoms are clearer than the number. You are winning work and cannot find the profit. You do not know your real overhead rate. Your line of credit creeps up every year. You cannot say which jobs make money. You are doing 3am payroll math. Any two of those and the financial system is the constraint, not the workload.
A $6.7M civil contractor cut overhead from 30 to 18 percent and turned a hidden 1 percent loss per job into 11 percent net once a CFO calculated the real overhead rate and rebuilt the bids around it. The work did not change. The visibility did.
You Do Not Need A $200K Hire.
A full-time construction CFO costs $180K and up in salary alone, which a $1M to $12M subcontractor cannot justify and does not need full time. A fractional construction CFO gives you the same function, the system and the monthly cadence, for a fraction of that. The Construction CFO runs it for commercial subs in two tiers: Core Financial starts at $1,900 a month, Executive Financial starts at $2,900 a month, and the full system is installed in 60 days.
Everything is done for you. Job costing built, WIP produced monthly, cash forecast updated, overhead rate fed back into bidding, and a monthly accountability meeting against the numbers. That is what a construction CFO actually does.
