Most contractors never see the inside of a surety’s file room, so an approval that drags or a bond line that comes back smaller than expected feels like a mystery. It usually isn’t. Underwriters are trained to look for a short list of recurring problems, and once you know what those surety underwriting red flags are, almost all of them can be fixed before you ever submit. Here are the ones we see most often — and exactly how to clear each one.
How an Underwriter Actually Reads Your File
Surety underwriting is built around the “three C’s” — capital, capacity, and character. Capital is your financial strength, capacity is your proven ability to do the work, and character is your track record and willingness to stand behind your obligations. A red flag is simply anything that weakens one of those three legs.
The important thing to understand is that a single weak spot rarely sinks an application on its own. Underwriters look at the whole picture, and strength in one area can offset a gap in another. Trouble shows up when two or three flags stack up at once — thin cash and messy financials, or a low credit score and a single job that dominates your backlog. Fix the flags one at a time and the file gets easier to approve with every step. Strong, well-documented files are also what unlock larger performance bond programs as you grow.
Red Flag #1: Thin or Negative Working Capital
Working capital — current assets minus current liabilities — is the number underwriters scrutinize before anything else. It is the cash cushion that keeps a job moving when a payment is late or a cost runs over. A common benchmark is that a surety wants to see roughly 10 percent of your largest single bonded job in working capital, or 5 to 10 percent of your total backlog. Fall short of that and your bond line gets capped to match the cash you actually have.
How to fix it: retain earnings in the company instead of distributing them, convert short-term debt into long-term notes so it drops off your current liabilities, collect aging receivables faster, and put a committed bank line in place. Even a modest improvement in working capital can lift your single-job and aggregate limits noticeably. Our deeper guide on working capital and surety bonds walks through the math step by step.
Red Flag #2: An Overleveraged Balance Sheet
Even with decent cash, too much debt relative to equity makes an underwriter nervous. A high debt-to-equity ratio signals that the business is leaning on borrowed money to operate, leaving less room to absorb a bad job. Heavy equipment loans, maxed-out lines of credit, and large related-party loans all draw attention.
How to fix it: build equity by leaving profit in the company, pay down revolving balances before year-end so the snapshot looks stronger, and avoid taking on new long-term debt right before you need a capacity increase. If owners have lent money to the company, consider formally subordinating those loans to the surety — it tells the underwriter that owner money stays in the business ahead of any bond obligation.
Red Flag #3: Stale or Internally Prepared Financials
The quality of your financial statements tells an underwriter how seriously you run the business. Two problems come up constantly: statements that are months out of date, and statements that were typed up internally with no accountant involved. Both force the underwriter to discount the numbers or stop and ask questions, and questions cost you time.
As your program grows, the level of financial statement the surety expects climbs with it:
- Compilation — acceptable for smaller programs, but the lightest level of assurance.
- Review — the practical standard for mid-sized contractors seeking real capacity.
- Audit — expected once your bonding needs reach the larger end of the market.
How to fix it: work with a construction-experienced CPA, close your books promptly after year-end, and provide a current interim statement plus a work-in-progress schedule whenever you ask for capacity. Fresh, professionally prepared numbers are the single fastest way to move an underwriter from cautious to comfortable.
Red Flag #4: A Sloppy or Missing WIP Schedule
For a contractor, the work-in-progress (WIP) schedule is arguably more important than the balance sheet. It shows every open job, the contract value, costs to date, billings, and estimated profit. Underwriters read it to spot fade (jobs whose profit is shrinking), underbillings (work done but not yet billed, which ties up cash), and overconcentration in a single project.
A WIP that doesn’t tie to your financials, or that shows several jobs slipping from profit toward break-even, is a major red flag — it suggests the estimating or job-costing system isn’t reliable.
How to fix it: keep your WIP current and make sure it reconciles to your income statement. If a job has faded, get ahead of it with a short written explanation rather than letting the underwriter discover it. A clean, accurate WIP signals a contractor who knows exactly where every dollar on every job stands — which is exactly the operator a surety wants to back. The same discipline is what lets contractors steadily increase their bonding capacity over time.
Red Flag #5: Single-Job Overconcentration
Taking on one project that dwarfs everything else you’ve done is one of the most common reasons a bond request stalls. If your biggest completed job was $2 million and you’re bidding a $10 million contract, the underwriter sees risk that your team, your cash, and your systems haven’t been tested at that scale.
How to fix it: grow your single-job size in sensible steps rather than one giant leap. When you do reach for a larger contract, strengthen the file around it — show the schedule, the key personnel, the major subcontractors (ideally bonded), and how you’ll fund the early months before billings catch up. Demonstrating that you’ve thought through the jump is often enough to get an underwriter on board.
Red Flag #6: Personal Credit Problems and Tax Liens
Surety is a credit product, so the personal credit of the owners matters — especially on small and mid-sized bonds. Low scores, collections, recent bankruptcies, and above all open tax liens or judgments are serious flags. An unresolved IRS or state tax lien is particularly damaging because the government’s claim can sit ahead of the surety’s.
How to fix it: resolve liens and judgments before applying, or get them onto a documented payment plan and show proof of it. For lighter credit issues, a brief written explanation of what happened and what’s changed goes a long way. And if a bond is needed quickly while bigger issues are still being worked out, a credit-based quick-apply program can often issue smaller bonds without full financial underwriting.
Red Flag #7: Reluctance to Sign the Indemnity Agreement
Every surety relationship is built on the General Agreement of Indemnity, and every owner — usually their spouse too — is expected to sign it personally. Hesitating to sign, or asking to carve out personal indemnity, reads as a character flag: if you won’t stand behind your own company, why should the surety?
How to fix it: understand the indemnity before you’re at the closing table so it isn’t a surprise, and treat signing it as a normal cost of being bonded. Strong indemnity actually works in your favor — real net worth standing behind the bond gives the underwriter room to waive collateral and sharpen your rate.
Turning Red Flags Into a Clean File
Notice the pattern: almost every red flag on this list is fixable with preparation rather than being a hard wall. The contractors who get the best terms aren’t the ones with flawless numbers — they’re the ones who anticipate the underwriter’s questions and answer them up front. Before your next submission, run this quick check:
- Current financials at the right assurance level, with an interim statement and WIP attached.
- Working capital and equity as strong as you can reasonably make them at year-end.
- A clean, reconciled WIP with any fade or underbillings already explained.
- Credit issues and tax liens resolved or documented on a payment plan.
- Indemnitors lined up and ready to sign without friction.
Tighten those five items and most of the things that quietly hold contractors back simply disappear. It also helps to understand how underwriters translate your file into a number — our guide to surety bond costs shows how a stronger file earns you a better rate, not just a faster yes.
The Bottom Line
Underwriting feels like a black box only until you know what’s inside it. The flags are predictable, the fixes are concrete, and a specialist who has seen thousands of files can tell you which ones actually matter for your situation — and which are easy to clear. Walk in prepared and you’ll spend less time waiting and more time bidding.
Want a second set of eyes on your file before you submit? Contact us today or call 877-914-0909. We’ll help you spot and fix the red flags ahead of time, then place your bonds with the right surety from our network of 80+ top-rated markets.