A contract bond typically costs between 0.5% and 3% of the total contract value. Established contractors with solid financials usually pay around 1% for a combined performance and payment bond package, while newer contractors or those with weaker credit can pay 5% or more. The premium is not the whole story, though: bonding also comes with a personal indemnity obligation that puts your own assets behind the guarantee.
Typical Rates by Project Size
Bond premiums scale with the contract, but the percentage drops as projects get larger. A Federal Highway Administration study of prime contractors found average bond rates running from about 1% on projects under $1 million down to roughly 0.5% on projects above $50 million. The Surety and Fidelity Association of America reported a similar curve, with premiums near 2.5% on small projects under $100,000 and about 0.68% on projects above $50 million.1Federal Highway Administration. Chapter 4 – Benefit-Cost Analysis of Performance Bonds
Here is what the ranges look like in dollars:
- Under $100,000: roughly 1% to 2.5%, or $1,000 to $2,500 in premium.
- $100,000 to $1 million: around 1%, meaning $1,000 to $10,000.
- $1 million to $10 million: around 0.9% to 1.35%, or $9,000 to $135,000.
- $10 million to $50 million: around 0.7% to 0.8%.
- Over $50 million: around 0.5% to 0.7%.
These figures assume a financially qualified contractor. Small contractors without much of a bonding track record commonly see quotes of 3% to 5%. Contractors with genuinely poor credit can face rates of 8% to 10%, and some sureties will decline the account entirely. The spread between the best and worst applicant on the same size project can be enormous.
One note on bid bonds: the bond amount itself is usually 5% to 10% of your bid, but the premium cost is generally nominal or bundled into the performance and payment bond package, so it rarely drives your total bonding expense.
What Drives Your Rate
Surety underwriting is built on the “three C’s”: credit, capacity, and character. Weakness in any one of them pushes your rate up.
Credit and Financial Strength
Personal and business credit scores are the first thing an underwriter looks at. A score above 700 typically qualifies you for rates in the 1% to 3% range. Below that, premiums climb quickly, and contractors with poor credit can see rates push into the 5% to 10% range. Some sureties won’t write the bond at all below a certain threshold.
Underwriters also dig into your balance sheet. They want a healthy debt-to-equity ratio and enough working capital to absorb delays, change orders, or material price spikes. A contractor who looks profitable on paper but has all their cash tied up in receivables is a red flag. Liquidity matters as much as profitability.
Capacity and Experience
Capacity is whether the project is a realistic fit for your company. If the largest job you’ve completed was $2 million and you’re trying to bond a $6 million project, the surety sees a much higher risk of failure and prices accordingly. Underwriters want to see gradual growth, not a tripling of project size overnight.
Track record feeds into character. A company with ten years of on-time completions and no claim history presents a fundamentally different risk than a two-year-old firm with one finished project. Years in business, references from project owners, and industry reputation all factor in.
Single and Aggregate Limits
When a surety approves you, they assign a single job limit and an aggregate limit. A contractor might have a $5 million single limit with a $25 million aggregate, meaning any one project can be up to $5 million as long as total bonded backlog stays under $25 million. A new project that pushes you past the aggregate has to be reviewed individually, which can mean a higher rate or a denial. These limits grow as you complete bonded work successfully.
The Indemnity Agreement Is Part of the Cost
Before any bond is issued, every principal of the company signs a General Agreement of Indemnity. This is your personal guarantee that if the surety pays a claim, you will reimburse them for the full loss plus legal fees and expenses. Sureties require the indemnity of all company owners, and spouses of married owners typically must sign as well, which prevents an owner from shielding personal assets by transferring them.
The distinction matters: a surety bond is not insurance. It’s credit. The premium is the fee for that credit arrangement, not a payment that absorbs future losses. If the surety pays out, a claim can reach into your personal savings, home equity, and other assets well beyond the business.
Documentation That Affects Your Quote
Getting a bond quote requires a substantial financial package. You’ll typically need:
- Year-end balance sheets, income statements, and cash flow statements for the past two to three years. Small programs may accept in-house statements, but larger programs require CPA-compiled, reviewed, or audited financials.
- Personal financial statements from every significant owner.
- A current work-in-progress schedule showing contract value, billings, costs to complete, and estimated profit for every active job.
- The bid invitation, proposed contract, specifications, and any bond forms the project owner requires.
- Business history: organizational structure, key personnel resumes, owner references, and completed project list with values.
Underwriters verify your numbers against tax returns, bank statements, and credit reports. Discrepancies raise your rate and can trigger outright denial. Upgrading from in-house to CPA-reviewed or audited statements often improves both your rate and your available capacity, because it signals you’re willing to submit your numbers to independent verification.
The SBA Guarantee for Small Contractors
Small contractors who can’t qualify for bonding on their own may be able to use the SBA’s Surety Bond Guarantee Program. Under the program, the SBA guarantees a portion of the surety’s loss on a claim, which makes sureties willing to bond contractors they would otherwise turn away.2U.S. Small Business Administration. Surety Bonds
The program covers contracts up to $9 million for non-federal work and up to $14 million for federal contracts.2U.S. Small Business Administration. Surety Bonds The SBA guarantees up to 80% of the surety’s loss on most bonds, and up to 90% on contracts of $100,000 or less or when the contractor is owned by veterans, service-disabled veterans, or socially and economically disadvantaged individuals.3U.S. Small Business Administration. SBA Makes Changes to Its Surety Bond Program Your company must meet SBA size standards for your industry.
The guarantee doesn’t eliminate the premium. You still pay for the bond, and the indemnity obligation still applies. What it does is open the door for contractors who would otherwise be shut out of public project work.
Lowering Your Rate Over Time
Bond premiums aren’t static. The most effective moves are slow but reliable.
Improving your credit score has the most direct impact. Paying down debt, clearing outstanding liens or judgments, and maintaining clean payment history on trade accounts all move the rate. Both personal and business credit matter, because underwriters pull both.
Strengthening working capital and net worth signals you can absorb project problems without defaulting. Contractors who reinvest profits rather than distributing everything as owner compensation tend to see their capacity and rates improve faster.
Completing bonded projects on time and claim-free is the strongest long-term factor. Every successful job becomes evidence you can handle the work. Sureties reward that history with better rates and higher limits, and the expanded capacity lets you bid larger and more profitable projects.