Bonding capacity by the numbers
- $150,000
- Federal contract size that requires performance and payment bonds
- Acquisition.gov (FAR 28.102)
What bonding capacity means
Bonding capacity is the amount of bonded work a surety will support for you at a given time. It comes in two numbers:
- Single-job limit. The largest single bonded project the surety will back for you.
- Aggregate limit. The total of all your open bonded work at once, across every active project.
A surety might set, for example, a single-job limit and a larger aggregate limit so you can run several bonded jobs at the same time without exceeding the total. This applies to contract bonds, not the fixed-amount license bond.
How sureties set your capacity
Underwriters build your program from the financial picture you can document. The stronger and cleaner the picture, the larger the program they will extend.
- Financial statements. The foundation. Quality and level of assurance matter as much as the numbers.
- Working capital. Current assets minus current liabilities, a core gauge of whether you can fund the work.
- Work-in-progress. A current WIP schedule shows how your open jobs are tracking to budget and completion.
- Track record. A history of bonded jobs finished on time and on budget is powerful evidence of reliability.
How the calculation actually runs
There is no published formula, and any broker quoting you a fixed one is guessing. What sureties use are multiples applied to the two anchor numbers on your balance sheet, then adjusted for everything qualitative in the file.
- Working capital drives the single-job limit. Current assets minus current liabilities, multiplied by a factor the surety sets. Two contractors with identical net worth get very different answers if one holds its value in cash and the other in equipment.
- Net worth informs the aggregate limit — the total bonded backlog you can carry at once, which is normally a considerably larger multiple than the single-job figure.
- Then the file moves the multiple. Audited statements, a committed bank line, relevant completed work, and consistent margins push it up. Margin fade, heavy under-billing, or thin experience at the size requested push it down.
Two consequences worth internalising. Capacity is consumed by your uncompleted work, not your annual revenue, so a full backlog can block a new bond even in a strong year. And because working capital is the lever, converting receivables to cash or terming out short-term debt can raise your limit without earning a dollar more.
How to increase it
Capacity is not fixed. You grow it by giving the surety more reasons to trust you with bigger work, and if credit is the thing holding the number down, funds control can unlock a program that credit alone will not. The cheapest capacity, though, is the capacity you already have: bonds on finished work stay against your aggregate until the obligee releases them, which is why closing a job out — including getting the consent of surety to final payment signed — is worth doing promptly, and why chasing exoneration on a completed subdivision is worth a letter. The most effective moves are:
- Quality financial statements. Move from internal or compiled statements toward CPA-reviewed or audited statements to unlock a larger program.
- Work-in-progress reporting. Keep an accurate, current WIP schedule so underwriters can see your open jobs are under control.
- Working capital and retained earnings. Leave profit in the company and build cash reserves rather than draining them each year. If public works retention is what is tying your cash up, substituting securities for retention puts it back on your balance sheet.
- A track record of completed bonded jobs. Every bonded project you finish cleanly makes the next, larger bond easier to justify.
When to upgrade your accounting
If you are bumping against your limits, the accounting upgrade usually pays for itself. Moving up the assurance ladder, from internal statements to reviewed to audited, tends to be the single biggest step toward a larger program. It signals discipline and gives the surety confidence to extend more. New or growing firms can also lean on the SBA Surety Bond program, which helps sureties support contractors who are still building capacity.
Not sure which terms mean what? The surety bond glossary breaks down working capital, aggregate limit, and the rest.