WHAT DOES A SURETY ACTUALLY NEED TO BOND YOUR COMPANY?
QUICK ANSWER
Most subcontractors know they need bonding to pursue larger commercial work. Fewer know exactly what a surety requires to approve a $2M single project bond or a $7M aggregate. The answer is financial: working capital above 10% of bonded backlog, current ratio above 1.5x, positive net worth, and financial statements that are either CPA-reviewed or audited depending on the bond level. SPM prepares every client for the surety financial conversation as a standard part of the engagement.
BONDING CAPACITY IS A FINANCIAL OUTCOME. CFOS BUILDS TOWARD IT.
BY JOSH LUEBKERPublished: June 2026Updated: June 2026
What Sureties Evaluate
WORKING CAPITAL — THE PRIMARY METRICMost sureties use a working capital multiplier to set aggregate bonding capacity. A common rule: 10x working capital equals available aggregate bonding. A subcontractor with $700K in working capital can support approximately $7M in aggregate bonding. Below $300K in working capital, bonding becomes difficult regardless of revenue. The $1.2M working capital target SPM uses supports approximately $12M in aggregate bonding capacity.
CURRENT RATIO — MINIMUM 1.5xCurrent assets divided by current liabilities. Below 1.5x, most sureties compress or restrict bonding. Above 2.0x, the full surety market is accessible. A current ratio that has been declining over 3 to 4 years tells the surety the company is consuming working capital faster than it is building it — which is a risk flag regardless of the absolute number.
FINANCIAL STATEMENT QUALITYSingle project bonds up to $1M typically accept company-prepared financial statements. Bonds of $1M to $3M usually require CPA-compiled or reviewed statements. Bonds above $3M to $5M typically require CPA-reviewed statements. Bonds above $5M for many sureties require audited statements. The quality of the financial statements — WIP schedule accuracy, clean balance sheet, consistent accounting policies — matters as much as the numbers themselves.
WORK-IN-PROGRESS SCHEDULEEvery surety underwriter will ask for the WIP schedule. It shows what is under contract, what is complete, what is billed, and what the projected margin is on open jobs. A WIP schedule that doesn't reconcile to the financial statements, shows large unexplained overbilling, or lacks per-job margin data will delay or deny the bond application regardless of the working capital position.
Bonding Thresholds by Financial Position
Working Capital
Current Ratio
Typical Aggregate Capacity
Statement Required
<$300K
<1.5x
Limited or none
N/A
$300K–$700K
1.5–2.0x
$3M–$7M aggregate
CPA compiled or reviewed
$700K–$1.2M
2.0–2.5x
$7M–$12M aggregate
CPA reviewed
>$1.2M
>2.5x
$12M+ aggregate
CPA reviewed or audited
These are representative ranges — actual limits vary by surety, trade, and relationship history. The $12M vision target ($1.2M working capital, $650K cash floor, $7M aggregate) is calibrated to the 2.0x+ current ratio that opens the full bonding market.
WHAT SURETIES SCRUTINIZE BY TRADE.
Civil & Heavy: Equipment on the Balance Sheet
Sureties read a civil sub's equipment schedule like a credit report — what's owned, what's financed, what the debt service does to working capital. Heavy equipment debt that looks fine to a bank can crush a bonding ratio. The structuring of equipment finance is a bonding decision, not just a purchasing one.
Concrete & Structural: The WIP Story
Sureties bond concrete subs on the quality of the WIP schedule — overbillings, underbillings, and profit fade history tell them whether your percent-complete numbers mean anything. A clean WIP with stable margins gets capacity. A WIP showing fade on every closed job gets declined regardless of the balance sheet.
Electrical & Mechanical: Backlog Concentration
Specialty sureties weigh backlog concentration — one GC at 70% of revenue or one mega-project dominating the book reads as risk even with strong financials. Diversification across GCs and project sizes expands capacity at the same financial position.
First-Time Bonders (All Trades)
Subs seeking their first bond face the steepest documentation curve: two to three years of financials, a current WIP, personal financials, and often CPA-prepared statements. The preparation takes a quarter when the books are clean and a year when they're not — which is why the bonding conversation should start before the bonded opportunity shows up.
WHAT BONDING READINESS UNLOCKS.
$5M + $10M
Project and aggregate, from clean books. A $25M marine GC running its ledger in shared Excel couldn't get bonded at all — the financials were too messy for any surety to trust. SPM rebuilt the accounting system; within weeks the company had $5M single-project bonding and $10M aggregate, with a $4.5M credit line in progress. Same company. Same work. Legible numbers.
10%
The working capital floor that drives capacity. The core surety math: working capital at or above 10% of bonded backlog. A sub wanting $7M of aggregate capacity needs roughly $700K of clean working capital — and the CFOS $12M-vision targets ($1.2M working capital, $650K cash floor) are calibrated to support $7M aggregate, $5M per project. The bonding number is an output of the financial system.
3x
What documented profitability does to valuation and capacity together. A $13.5M marine contractor went from 7% to 14% net with nine months of clean, documented reporting. The same documentation that took the valuation from $2.3M to $5.5M is exactly what sureties underwrite on. Bonding readiness and exit readiness are the same project wearing different hats.
Frequently Asked Questions
By building the financial position the surety requires. Working capital grows through billing velocity, collections discipline, and controlled owner draws. The current ratio improves as AP aging tightens and reactive debt is eliminated. The WIP schedule is reconciled monthly so it is always surety-ready. The financial statements are produced on a clean, consistent basis that CPA reviewers can rely on. Bonding capacity is an output of the financial system working correctly — not something applied for separately.
A compilation is the CPA presenting financial data provided by management without independent verification. A review involves the CPA performing analytical procedures and inquiries to provide limited assurance that no material modifications are needed. An audit provides the highest level of assurance through independent verification of account balances and transactions. Most subcontractors move from compiled to reviewed as they pursue larger bonding — the upgrade typically costs $3K to $8K annually and opens up the $1M to $5M single project bond market.
From a starting position of adequate margins but insufficient working capital, typically 12 to 18 months of intentional working capital building. The sequence: eliminate reactive debt, improve billing velocity, build the cash reserve, structure owner draws to match net profit. SPM clients in the $5M to $8M revenue range who started with $200K to $300K in working capital have reached the $700K threshold within 12 months by working the system consistently.
Because sureties underwrite the year in progress, not the year that ended. A December statement says nothing about whether the $2M job you're asking them to bond is tracking to margin in July. They want a current WIP schedule, interim financials, and evidence the company watches its own numbers monthly. Year-end CPA statements are the floor — typically reviewed-level above $1M per project. The monthly close, the WIP discipline, and the CEO Report are what make a surety comfortable growing your program instead of capping it.
Yes — sureties don't require a debt-free balance sheet; they require debt that makes sense. Equipment debt matched to revenue-producing iron with reasonable service coverage is normal. What compresses capacity is debt that signals distress: a maxed revolving LOC that never rests, merchant cash advances at any balance, or short-term borrowing funding long-term losses. One SPM client cleared two LOCs and an SBA loan in 90 days and was approved for $750K in new credit — the surety conversation transformed for the same reason the bank one did. It's not the presence of debt. It's the story the debt tells.
IS YOUR FINANCIAL POSITION READY FOR THE NEXT BOND LEVEL?
Most subcontractors don't know their actual current ratio or working capital until the surety asks. First call calculates both and shows you the gap to the next bonding threshold.
Former commercial construction project manager and master electrician. Managed 150+ projects totaling $300M+ including Google data centers, military bases, hospitals, and high-rises. Now fractional CFO for commercial subcontractors doing $1M–$12M through Sulphur Prairie Management.
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