YOUR P&L SHOWS PROFIT. YOUR BANK ACCOUNT DISAGREES.
Construction P&Ls can show healthy profit while hiding job losses that haven't been recognized yet. Overbilling creates temporary income that reverses when the job closes. Deferred losses on over-budget jobs stay invisible until the work is done and there's nothing left to bill. Without a WIP schedule reconciled monthly, the P&L is reporting a story that may have nothing to do with what the business is actually earning.
This is one of the most dangerous patterns in construction finance because it looks fine until it doesn't. The contractor who sees 12% net profit on their P&L and makes decisions based on that number — hiring, equipment purchases, distributions — may be making those decisions on profits that were already spent before they showed up on the report.
HOW CONSTRUCTION FINANCIALS REPORT PROFITS THAT AREN'T REAL.
Standard accounting records what's billed and what's paid. In construction, billing timing and work completion timing are almost never the same. A contractor who bills $500,000 in January on a job that's 40% complete on a $1M contract has overbilled — they've invoiced more than the work value they've completed. That $500,000 shows up as revenue in January. The P&L looks strong. But when the job closes, the final billing is $500,000 less than it would have been — and the profit disappears.
The reverse is also true. A contractor running a $2M job that's 70% complete and 85% spent has a deferred loss embedded in work-in-progress. The job is heading for a loss. But until the job closes and the final costs are recognized, the P&L shows the billings as revenue and the costs as incurred — it doesn't show the projected shortfall on the work remaining. The loss is real. It just hasn't been reported yet.
Both of these problems are solved by a WIP schedule — a monthly reconciliation that compares percent complete (by cost) to percent billed (by invoice), and projects the estimated cost at completion for every active job. Without it, the P&L is reporting billing activity, not profitability. Those are two completely different things in construction.
The diagnostic question: Take your 5 largest active jobs right now. On each one: what percent complete are they by cost? What percent have you billed? What's the projected cost at completion? If you can't answer those questions from a live report, your P&L is reporting billing activity — not profit.
THE SPECIFIC MECHANISMS THAT DISTORT THE P&L.
OVERBILLING INFLATES CURRENT PERIOD REVENUE
Front-loaded SOVs are a legitimate cash flow tool — but they create a timing distortion in the P&L. When you bill $600,000 in mobilization and early work on a $2M job, but the work completed represents $350,000 in earned value, you have $250,000 in overbilling on that job. Under percentage-of-completion accounting, only the earned value should be recognized as revenue. Under cash accounting, all $600,000 shows up as revenue. The difference is $250,000 of reported profit that will reverse over the remaining job duration. Contractors who use overbilling as a cash tool and report on cash basis can see their P&L reflect a profitable year while their actual earned margin is significantly lower — and the reversal hits in the year the job closes.
DEFERRED LOSSES HIDE IN WORK-IN-PROGRESS
A job that's 70% complete and 85% spent is projecting a loss. The remaining 30% of work needs to be done at the same cost rate as the first 70% — but only 15% of the budget remains. That's a structural loss embedded in WIP. Under proper construction accounting, that projected loss should be recognized in the current period — not deferred until job close. Most contractors without a WIP schedule don't recognize it at all until closeout, when the costs are all in and there's nothing left to bill. The P&L looked fine for 10 months. Month 11 has a surprise loss that was completely visible if anyone had been running cost-to-complete projections.
COST TIMING MISMATCHES CREATE ARTIFICIAL PERIOD PROFIT
Material invoices that hit in the next accounting period after the work was done, subcontractor invoices delayed by 45 days, or payroll accruals not properly matched to the revenue period — all of these create periods where revenue is recognized but the corresponding costs haven't been booked yet. The P&L shows high-margin months followed by low-margin months. The business didn't actually perform better in January than February. The invoices just hit differently. Without accrual-based accounting that matches costs to the period the work was performed, the P&L is a billing and payment calendar, not a profitability report.
THE WIP SCHEDULE IS THE TRUTH DOCUMENT.
A properly maintained WIP schedule — updated monthly, reconciled to the books — shows the real picture. For every active job: original contract value, change orders to date, total revised contract, costs incurred to date, estimated cost at completion, percent complete by cost, percent billed, over/underbilling, and projected job margin. When that document exists and is reconciled monthly, fake profitability becomes visible immediately.
WHAT DECISIONS GET MADE ON NUMBERS THAT AREN'T REAL.
Distributions Based on Phantom Profit
An owner who takes $180,000 in distributions based on a P&L showing $600,000 in net profit — when the real WIP-adjusted profit is $280,000 — has taken money out of the business that was needed to fund job completions. The cash crisis that follows looks random. It isn't.
Growth Decisions Built on Inflated Numbers
A contractor who sees strong P&L performance and adds two crews, a superintendent, and three new jobs has made a growth decision on misleading data. When the deferred losses on the existing portfolio recognize, the expanded overhead structure is now a problem — right when cash is tightest.
Surety and Bank Relationships Built on Fiction
Bonding companies and banks rely on financial statements. A surety that issues $7M in bonding capacity based on a P&L that shows $600K net profit — when WIP-adjusted profit is $180K — has made a credit decision on bad data. When the real numbers emerge at year end, bonding capacity gets cut at exactly the wrong time.
FREQUENTLY ASKED.
Former PM and master electrician. Managed $300M+ in construction volume. Has worked with contractors whose P&Ls showed double-digit profit while their actual WIP-adjusted margin was under 3%. The gap between reported and real is almost always fixable — once you can see it.