Construction Calculators
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Net Profit Calculator
Calculate your net profit margins after all expenses. Analyze profitability and optimize your pricing strategy.
Net Profit Calculator
Calculate net profit margins and analyze project profitability
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How the Net Profit Calculator Works
Construction is the only industry where a 35 percent gross profit can become a 1 percent net loss without anyone noticing until tax season. Overhead, callbacks, financing carry, and the unbilled change order that quietly aged out — they all eat the gap. CFMA Annual Construction Industry survey data puts median GC net margin at 2 to 4 percent and specialty subs at 4 to 8 percent. Anything above that range is a real outlier; anything below is most of the industry.
Run net profit at three levels: by job at closeout, by month against the trailing twelve, and by year against budget. The job-level review catches estimating errors. The monthly catches overhead drift. The annual catches whether the business model still works.
Profit math at three levels
- Gross profit = revenue - direct costs
- Net profit = revenue - all costs
- Gross margin = gross profit / revenue
- Net margin = net profit / revenue
Estimating Steps and Checks
Use earned revenue, not billed
For percentage-of-completion accounting, use revenue earned in the period — billed amount adjusted for under or over-billing. Cash-basis numbers will mislead anything longer than a single one-shot job.
Pull every direct cost off the WIP
Materials, loaded labor (with burden), equipment, subs, permits, bonds, freight, dump fees, project-specific insurance. If it would not exist without this job, it is direct.
Allocate overhead the way it actually behaves
Office salaries, rent, software, fleet, owner draw, sales — divided across direct labor hours or revenue, depending on which driver matches your G&A pattern. Most contractors land between 8 and 18 percent of revenue.
Read the dollars, not just the percent
A 6 percent net on a $5M year is $300K. A 6 percent net on a $500K year is $30K. The percent is the same; the runway, the salary the owner can pay themselves, and the hiring capacity are not.
Common Checks
- Gross profit hides overhead problems. A company with 38 percent gross margin and 36 percent overhead is bleeding — but you only see it at the bottom of the P&L.
- Watch out: callbacks and warranty work hit current-period overhead, not the closed job. Track them by originating job code so the historical net margin reflects reality.
- Cash and profit are different — a company can be profitable and still bounce a payroll check. The classic squeeze: 30-day net contract terms paying for week-to-week labor.
- Field tip: track change-order profit on a separate line. Most contractors lose money on COs because they forget to apply full markup or because the labor inefficiency on a stop-work-and-restart sequence is invisible at takeoff.
Net Profit Calculator FAQs
What net profit margin is realistic for a contractor?
Per CFMA Annual Construction Industry survey data, GC net margins typically run 2 to 4 percent, specialty subs 4 to 8 percent, residential remodelers 6 to 12 percent. Anything north of those ranges either has a unique market position or is being measured wrong (typically by leaving owner comp out of overhead).
Why does my P&L show profit but my checking account is empty?
Profit is accrual; cash is what cleared the bank. Net 30 contracts on a labor-heavy job mean you carry payroll and material for 4 to 6 weeks before a draw lands. A profitable backlog can still strangle cash if AR grows faster than billed-and-collected revenue.
Where does most of the margin slip happen?
Three places, in order of frequency: labor productivity (jobs that take 15 to 30 percent more crew-hours than estimated), under-priced change orders, and overhead allocation (the office burn that growth was supposed to cover but did not).
Should owner compensation count as overhead?
Yes. If you do not pay yourself a market salary on the P&L, your "net profit" is overstated by exactly that amount. CFMA benchmarks assume owner comp is in overhead — leaving it out makes your numbers look better than peers.