Commercial Construction Financial Management Best Practices for CFOs

March 6, 2026

By: Erin Silkowski

Partner, Assurance

Key Takeaways

Job costing precision is non-negotiable: Misclassified direct, indirect, and G&A costs distort project-level profitability and compress reported margins — and they compound across a full portfolio.
WIP schedule integrity determines credibility: Lenders, sureties, and acquirers evaluate your work-in-progress schedule as a proxy for the accuracy of your entire financial reporting function. It either builds confidence or erodes it.
Cash flow and profitability are not the same number: In commercial construction, profitable jobs regularly generate cash flow crises. A CFO who manages only the income statement is managing half the business.
Percentage-of-completion accounting requires active management: Revenue recognized under ASC 606 is only as reliable as the cost-to-complete estimates supporting it. Those estimates need to be reviewed, not just reported.
Bottom Line: Commercial construction finance is a technical discipline. The CFOs who outperform their peers treat it that way — with rigorous controls, industry-specific reporting, and advisors who understand the difference between underbillings and revenue.

Commercial construction has a way of making financial management look deceptively simple — right up until it doesn’t. Revenue is on the books. Margins look acceptable. And then a single large project swings from break-even to a $2M loss because the cost-to-complete estimate was wrong in November, and nobody caught it until March.

If you’re the CFO of a commercial construction company, you know that this industry’s financial profile is unlike almost any other. Long project cycles. Upfront mobilization costs. Revenue is recognized over time based on estimates. Retainage withheld for months or years. Subcontractor exposure that isn’t always visible until it’s already a liability. Managing it well requires a specific, disciplined approach — and a clear-eyed understanding of where the standard general-business playbook falls short.

Here’s where commercial construction CFOs should be focused.

Job Costing: The Foundation Everything Else Is Built On

Job costing is not a reporting exercise. It is the foundational control mechanism that determines whether your financial statements accurately reflect the truth.

In commercial construction, costs fall into three categories: direct costs (labor, materials, subcontractors, and equipment directly attributable to a specific contract), indirect costs (field supervision, project management, and shared equipment), and general and administrative expenses (executive compensation, office overhead, and non-project staff). The correct classification of every dollar across these three categories determines both your reported project margins and your tax position.

The common failure mode: indirect costs and G&A accumulate unchecked because the documentation required to reallocate them to contracts — detailed timesheets for project managers, estimators, and supervisors — is treated as an administrative burden rather than a financial control. The business impact is direct. Costs that should flow to contracts instead are recorded as G&A. Those G&A costs don’t generate revenue recognition under percentage-of-completion. Reported project margins compress, and net income understates true contract performance.

Implementing detailed timesheet disciplines and a formal cost allocation methodology is not an accounting nicety. It is a material financial management decision.

WIP Reporting: Your Most Consequential Monthly Document

Your work-in-progress schedule is, in many respects, the most important financial document your company produces. It is the mechanism by which you reconcile estimated contract revenue, costs incurred to date, costs to complete, and billings — and it is the document your surety, your lender, and any prospective acquirer will examine first.

The WIP schedule surfaces two critical positions that require active CFO-level attention. Underbillings (costs in excess of billings) represent revenue earned but not yet invoiced. They are an asset — but an asset that converts to cash only if billing follows. Concentrated underbillings are a working capital risk. Overbillings (billings in excess of costs) represent cash received before revenue is earned. They are a liability — a future performance obligation. Neither position is inherently problematic, but both require explanation, trend monitoring, and active management.

CFOs should be reviewing the WIP schedule monthly, not quarterly. By the time a problematic trend appears in quarterly reporting, the corrective window is already narrow.

Percentage-of-Completion: The Revenue Recognition Discipline Most Firms Get Wrong

Under ASC 606, commercial contractors recognize revenue over time based on the ratio of costs incurred to total estimated contract costs. This is the right model for long-duration contracts. It also means that your income statement in any given period is only as accurate as the cost-to-complete estimates embedded in it.

Cost-to-complete estimation is where financial management and operational management intersect — and where the CFO’s role is most critical. Project managers are optimistic by nature. Their job is to deliver projects. The CFO’s job is to ensure that the financial projections reflect what the numbers actually support, not what the PM believes he can still recover.

This requires a formal project review cadence: regular, structured conversations between finance and operations focused on cost-to-complete variances relative to original estimates, subcontractor exposure, change order status, and owner dispute risk. The output of those reviews must feed directly into the WIP schedule adjustments. Revenue recognition adjustments that surprise the income statement at project closeout are a control failure, not an accounting event.

Cash Flow Management in a Retainage-Heavy Business

Profitable commercial construction companies run out of cash. This is not a paradox — it is a structural feature of an industry where retainage of 5–10% of contract value is withheld until project completion, mobilization costs are front-loaded, and payment cycles from owners routinely extend to 60–90 days.

CFOs need a 13-week rolling cash flow forecast that tracks not only operating receipts and disbursements but the specific timing of expected retainage releases, anticipated change order payments, and subcontractor payment obligations. The income statement tells you whether you’re profitable. The 13-week cash model tells you whether you can make payroll.

Accounts receivable aging in construction requires more granularity than a standard AR report provides. Separate current billings from retainage receivable. Track disputed invoices as a distinct category. Monitor days sales outstanding (DSO) by project and by owner — patterns of slow payment from specific clients are forward-looking credit risk indicators that belong in your CFO reporting dashboard, not discovered retroactively.

The CFO Advisory Model: Why It Works for Commercial Construction

Many commercial construction companies — including those operating at significant scale — are better served by a CFO advisory engagement than by a traditional audit-and-tax relationship with a generalist firm. The distinction matters.

A CFO advisory partner is embedded in your financial operations: reviewing monthly reporting, stress-testing cost-to-complete estimates, evaluating capital structure decisions, and providing the external perspective that internal finance teams — particularly those managing rapid project growth — often can’t supply for themselves.

At Wiss, our CFO Advisory Services for construction companies are built on direct industry experience. We understand percentage-of-completion accounting, WIP schedule dynamics, job cost allocation, surety reporting requirements, and the tax optimization strategies specific to contractors — from the Section 179D energy efficiency deduction to the domestic production activities provisions that remain relevant for certain project types. We don’t learn construction finance on your engagement. We bring it.

The construction companies with the strongest financial management aren’t necessarily the largest. They’re the ones with CFOs who insist on precision, and advisors who can match it.

Contact the Wiss Construction Practice Team to discuss how CFO Advisory Services can strengthen your financial operations.