EDUCATION, BONDING

CONSTRUCTION BONDING CAPACITY, EXPLAINED.

QUICK ANSWER

Working capital, current assets minus current liabilities, is the single biggest driver of aggregate bonding capacity, and sureties typically apply a multiple to available working capital to set the maximum program they're comfortable extending. Net worth and the working capital ratio complete the picture, with a ratio near or below 1.0 signaling thin coverage and 1.5 or higher signaling a healthier cushion. The quality of the reporting behind those figures moves the answer as much as the figures themselves do.

Two subcontractors with the same revenue and the same working capital can get different answers from the same surety. The one with a record of clean, reconciled statements and a WIP schedule that ties to those statements gets the larger program. The other one gets questions. Underwriters are buying confidence in your numbers alongside the numbers themselves, which is the part most owners never hear said out loud. It's also the part you can improve without raising a dollar of new capital, which makes it the cheapest work on the list.

BY JOSH LUEBKERPublished 2026-08-06Updated 2026-08-07
THE DEFINITION

WHAT IT MEANS.

Bonding capacity is the maximum aggregate and per-project bond amount a surety will extend, and it's driven primarily by working capital, net worth, and a working capital ratio in the healthy range, generally 1.5 or higher.

Bonding capacity isn't one number. There's an aggregate figure, meaning everything you can have under bond at once, and a single-project figure, meaning the largest job the surety will write. The two move together but not at the same rate, and a sub who only knows the aggregate can still get stopped on a job that fits inside it.

COMMON MISTAKES

WHERE IT GOES WRONG.

01

Bonding capacity is basically just about revenue size

Revenue counts for less here than working capital, net worth, and the working capital ratio. A smaller company with strong capital can carry a larger program than a bigger company running thin. That's why two subs at the same top line get different answers, and it's why chasing revenue in order to raise capacity works backwards.

02

Our capacity is fixed until we have a lot more cash

Capacity can improve through consistent, reconciled reporting and a cleaner WIP schedule without a large increase in working capital. The underwriter is buying confidence in the numbers, and confidence is something you can build in a few months of disciplined closes. Working capital and net worth stay the primary drivers, but they aren't the only lever you have.

03

The surety just decides what they decide, there's no real formula

Sureties apply fairly consistent underwriting logic built on working capital, net worth, and the working capital ratio. It's not a mood and it's not a relationship favor. Once you know which inputs the decision runs on, you can watch those inputs monthly and know roughly where you stand before you ever ask.

THE ARITHMETIC

WHAT IT LOOKS LIKE IN DOLLARS.

1.5 or higher

That's the working capital ratio that reads as a healthy cushion to most sureties. Near or below 1.0 reads as thin coverage and it constrains the program they will write. The CFOS target is 1.5, tracked every month rather than reviewed once when renewal comes around.

HOW TO GET IT RIGHT

WHAT COUNTS MOST.

Working capital and net worth reported monthly, not at renewal

Working capital gets tracked every month against the 1.5 CFOS target ratio rather than reviewed only when renewal comes around. Net worth and balance sheet strength get reported consistently, month over month, so the trend is visible instead of reconstructed. A figure you look at once a year is a figure you can't manage.

A WIP schedule that reconciles to the financials every period

The WIP schedule has to tie cleanly to the financial statements every reporting period, not approximately and not once at year end. A WIP that doesn't reconcile is one of the fastest routes to extra underwriting questions or a cut in the program. When the two agree by construction, the underwriter has nothing left to chase.

A bonding capacity forecast that runs ahead of the growth plan

The forecast models how the growth plan will move available capacity before the plan is committed, so a capital ceiling gets found on a spreadsheet rather than after a bid is submitted. Clean, consistent financial reporting is held as a standing practice rather than a pre-renewal project. That combination is what stops capacity from deciding your bid list for you without anybody voting on it.

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PRICING

FLAT MONTHLY FEE. NO SURPRISES.

Three tiers, priced by your trailing twelve month revenue. Which one you're in depends on how much of the work you want off your desk. No hourly billing, no payroll, and no add-ons.

Last 12 months revenueMonthly fee
Up to $1M$1,900 to $2,900
$1M to $3.5M$2,600 to $3,900
$3.5M to $6.5M$3,800 to $5,700
$6.5M to $9.5M$5,100 to $7,100
$9.5M to $12.5M$6,100 to $8,500
$12.5M to $15.5M$7,400 to $11,000
$15.5M to $18.5M$9,400 to $13,500
$18.5M+Quoted individually

Range reflects the three tiers below. Which one you're in depends on how much of the work you want off your desk. No payroll. No hidden line items.

Core

You stop guessing.

You get the CFO work. Job costing built against the way you estimate, a 13 week cash forecast, monthly WIP, and a meeting every month that ends in decisions rather than a report.

Your bookkeeper keeps doing the books.

Executive

You stop touching the books.

Everything in Core, and we run the bookkeeping and the controllership as well. Nobody in your office is answering coding questions or chasing a reconciliation at month end.

We do the books. No payroll.

Strategic

Every job shows its margin while it's still running.

Everything in Executive, plus the job costing and WIP platform set up, loaded with your cost codes, and managed for you every month. You never have to learn it.

We do the job costing.

COMMON QUESTIONS

FREQUENTLY ASKED.

A ratio around 1.5 or higher signals a healthy cushion to most sureties. Near or below 1.0 signals thin coverage, and it will constrain the program they're willing to write. The ratio is current assets divided by current liabilities, so it moves every time AP builds up or a receivable gets collected, which is why watching it monthly beats checking it at renewal.
To a degree, yes. A more consistent, reconciled reporting record and a WIP schedule that ties to the statements improve underwriting confidence, and confidence is part of the decision. Working capital and net worth remain the primary drivers, so reporting quality raises the ceiling rather than replacing the capital. The cheap half of the work is the reporting half, and most subs haven't done it.
Reporting quality and consistency, plus whether the WIP schedule reconciles cleanly to the financial statements. Two subs with similar revenue and similar working capital can receive meaningfully different programs when one has a clean, reconciled record and the other doesn't. Sureties are underwriting their confidence in the numbers as much as the numbers themselves.
By forecasting working capital and net worth against the growth you're planning, so the capacity you'll need is worked out in advance rather than discovered as a ceiling after a bid is already in. The forecast turns capacity from a wall you hit into a number you manage. It also tells you how much profit has to stay in the business to support the program you want next year.
Three tiers, and which one you are in depends on how much of the work you want off your desk. Core is where you stop guessing: job costing built against the way you estimate, a 13 week cash forecast, monthly WIP, and a monthly meeting that ends in decisions, while your bookkeeper keeps doing the books. Executive is where you stop touching the books, because we run the bookkeeping and the controllership as well. Strategic is where every job shows its margin while it is still running, because the job costing and WIP platform is set up and managed for you. No payroll. No scope gaps.
WHAT THIS TIES INTO
Josh Luebker, The Construction CFO
Josh Luebker
FRACTIONAL CFO · THE CONSTRUCTION CFO

Former commercial project manager and master electrician: 150+ projects worth $2.1B combined, from $50,000 to $300M. Now fractional CFO to commercial subcontractors.

DO YOU KNOW THE MULTIPLE YOUR SURETY IS USING?

Bring your last balance sheet and your current WIP schedule. We will work out your working capital, your ratio, and whether reporting or capital is the thing capping your program.

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