Top 3 business mistakes we see general contractors make
General contracting is a thin-margin, slow-cash business where small structural errors compound quickly. These three account for most of what we see go wrong.
Mistake 1: Buying equipment in the way that costs the most capacity
A GC needs a telehandler. Cash is available. Buying it outright feels conservative — no debt, no interest, no lender.
For a bonded contractor it is frequently the most expensive option available.
Bonding capacity is generally a multiple of working capital, often cited around ten times for an aggregate program. Working capital is current assets minus current liabilities. Cash is a current asset. So a $120,000 cash purchase removes $120,000 of working capital immediately, and at a ten times multiplier that is roughly $1.2 million of bonding capacity gone to buy one machine.
Financing the same machine over sixty months puts only about the next twelve months of principal into current liabilities — call it $24,000 — for roughly a $240,000 capacity effect. Same machine. Five times less damage.
Simplified illustration ignoring interest and offsetting asset treatment. Surety practice varies; confirm with your agent and CPA.
The general rule for a bonded GC: match the term to the asset life and keep the current portion small. The interest you pay is almost always cheaper than the bonding capacity you would otherwise surrender.
Mistake 2: Letting receivables age past ninety days
Every contractor knows slow payment is painful. Fewer know there is a specific cliff.
Surety underwriters commonly exclude receivables aged beyond ninety days from working capital entirely. Not discount — exclude. A $400,000 receivable at day 89 supports your bond program. At day 91 it supports nothing, while still being money you are owed and still being an asset on your balance sheet.
The industry context makes this worse than it sounds. Construction runs some of the longest collection cycles of any sector, with commercial projects averaging well over eighty days to subcontractor payment and retainage of roughly 10% held until completion. Survey work has found only about 12% of construction businesses are consistently paid on time, and nearly one in five have missed payroll because of it.
So the drift past ninety days is not an exception. It is the default unless somebody actively fights it. What that fight looks like:
- Run an aging report weekly, not monthly. The goal is knowing on day 60 which invoices are heading for day 91.
- Escalate before the cliff, not after. A call at day 70 is a conversation. A call at day 120 is a collection.
- Treat lien rights as a calendar, not a threat. Preliminary notice deadlines are jurisdictional and unforgiving, and preserving the right costs nothing.
- Negotiate retainage reduction at 50% completion. Many contracts allow it and most contractors never ask.
- Know which owners and GCs pay slowly, and price accordingly. Slow payment is a cost of doing business with a specific counterparty, and it belongs in the bid.
Mistake 3: Confusing volume with profit
This is the one that ends companies, and it is nearly always well-intentioned.
General contracting is a pass-through business. A GC bidding $20 million of work is handling mostly subcontractor and material cost, keeping a thin slice. Typical figures put GC gross profit around 12% to 16% and net profit at 5% to 8% for well-managed firms, with nonresidential net margins measured near 4%. Doubling revenue in that structure does not double anything comfortable — it doubles the amount of other people's money flowing through your balance sheet and doubles the working capital required to carry it.
At a 4% net margin, a $10 million contractor keeps $400,000. Growing to $20 million means carrying roughly twice the receivables, twice the retainage, twice the payroll exposure, and twice the bonding requirement — to keep $800,000, assuming nothing goes wrong on any job. One bad project erases the entire increase.
What competent operators watch instead of revenue:
- Gross profit dollars per employee, not top-line per employee.
- Working capital turnover — how hard the balance sheet is being worked.
- Profit fade job over job. Surety underwriters scrutinize this specifically, and a pattern of jobs finishing below their estimate is treated as a management signal rather than bad luck.
- Debt to equity. Sureties commonly prefer to see it below 1.0.
- Backlog quality, meaning margin and counterparty, not just dollar volume.
The common thread
All three mistakes come from optimizing the wrong number. Buying with cash optimizes for looking debt-free. Tolerating slow receivables optimizes for client relationships. Chasing revenue optimizes for a figure that sounds like success at a trade association dinner.
The number that actually governs a general contractor is working capital, because it sets bonding capacity, and bonding capacity sets what you are allowed to bid. Nearly every structural decision in this business should be tested against it.
The bottom line
Protect working capital, chase receivables before day ninety, and grow on margin rather than volume. Our companion piece on business credit and bonding capacity for GCs works through the arithmetic in more detail.
Frequently asked questions
Is it better for a general contractor to buy equipment with cash or finance it?
For a bonded contractor, financing is usually better. Bonding capacity is generally a multiple of working capital, and a cash purchase removes the full amount from working capital immediately, whereas a financed purchase only puts the next twelve months of principal into current liabilities. On a $120,000 machine at a ten times multiplier, that difference can be roughly a million dollars of bonding capacity.
Why do receivables over 90 days matter so much to contractors?
Because surety underwriters commonly exclude them from working capital entirely rather than merely discounting them. A large receivable that supports your bond program at day 89 supports nothing at day 91, even though you are still owed the money. Given that construction payment cycles routinely run past eighty days, that cliff is reached by default unless receivables are actively managed.
What profit margins should a general contractor expect?
Well-managed general contractors commonly run gross profit around 12% to 16% and net profit around 5% to 8%, with nonresidential net margins measured closer to 4%. Because general contracting is largely a pass-through model, margin tends to live in overhead control rather than in gross spread, which is why revenue growth alone does not improve financial strength.
How can a contractor increase bonding capacity?
Increase working capital and protect it. That means structuring equipment debt over longer terms so the current portion stays small, collecting receivables before they age past ninety days, negotiating retainage reduction where contracts allow it, retaining earnings rather than distributing them, and improving the quality of financial statements, since larger bond programs generally require reviewed or audited statements.
What is profit fade and why do sureties care?
Profit fade is the pattern of jobs finishing at lower margins than they were estimated at. Surety underwriters scrutinize it because it suggests estimating or project management weakness rather than isolated bad luck, and a consistent pattern of fade can limit bonding capacity even when the company remains profitable overall.
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This article is general information about commercial equipment financing and is not tax, legal, or financial advice, nor a commitment to finance. All figures are illustrative examples, not offers or quotes. All financing is subject to credit approval and underwriting. Rates, terms, and approval depend on the complete business and credit profile.