Bid bonds and performance bonds explained

The three bonds you will meet

They appear at different points in the same procurement, and each protects the agency against a different failure.

• Bid bond — submitted with your bid, typically five to ten percent of the bid amount. If you win and refuse to sign, the surety covers the agency's cost of going to the next bidder.
• Performance bond — issued at contract execution, usually one hundred percent of the contract value. It guarantees the work is completed to the contract terms.
• Payment bond — issued alongside the performance bond, guaranteeing subcontractors and suppliers get paid. On federal work this is the Miller Act; most states have a Little Miller Act equivalent.

How bonding capacity is decided

A surety is not an insurer taking a priced risk; it expects to be repaid for any loss. So underwriting looks like credit underwriting. The classic factors are character, capacity, and capital: your payment history and reputation, your demonstrated ability to run work of this size, and your balance sheet.

Working capital and net worth drive the arithmetic. A common rule of thumb is a single-project limit around ten times working capital and an aggregate limit around twenty times, though sureties vary widely and CPA-reviewed or audited statements move the number more than internally prepared ones. Your bonding capacity is stated as two figures: the largest single job and the total backlog you can carry at once.

How to raise your capacity

Capacity grows deliberately, not by asking. Sureties respond to evidence over two or three reporting periods.

• Upgrade your financial statements from internally prepared to reviewed, then audited.
• Retain earnings rather than distributing them, and keep an unused line of credit open.
• Deliver a steady record of completed bonded work slightly below your limit before asking to jump a tier.
• Tighten work-in-progress reporting so the surety sees accurate cost-to-complete, not surprises.
• Bring in your CPA and agent together once a year rather than only when a big job appears.

When the job is bigger than your bond line

You have three realistic options. Joint venture with a larger firm and bond the venture. Take the work as a subcontractor to a prime who can bond it. Or ask the surety for a one-off capacity increase supported by the specific project's schedule of values, the owner's funding, and your staffing plan.

The SBA Surety Bond Guarantee program also backs bonds for smaller firms that cannot yet qualify on the open market, and many states run a parallel program tied to DBE and small business participation.

Where bonds are and are not required

Bonding requirements on public construction are statutory and threshold-based, so small jobs frequently fall below the line and require no bond at all. Service, professional services, and software contracts are usually unbonded, though some agencies require a performance bond on large multi-year service agreements.

Read the solicitation, not the general rule. The bond amount, the acceptable surety rating, and the form the agency will accept are all stated there, and submitting a bond on the wrong form is a responsiveness failure that no amount of price advantage fixes.