Construction Bond Cost: Rates by Credit & Project Size
A construction bond — the performance and payment bonds a construction bond project requires — costs a percentage of the contract amount, paid annually, not a flat fee. For most contractors that runs about 0.5% to 3% of the contract per year, and the single biggest variable is the personal credit of the company's owners. On a $1,000,000 contract that is roughly $5,000 at the low end and $30,000 at the high end for the same job. The bid bond you submit to win the work is usually free when the surety has prequalified you, because the carrier earns its premium on the performance and payment bonds that follow the award.
Competitor pages stop at “1 to 3 percent” and leave you to guess. This guide gives you the two tables that actually answer the question — premium by credit tier and cost by project size — plus the underwriting factors that move your rate, the SBA program that gets credit-challenged contractors bonded, and a construction bond calculator that runs your exact numbers. The percentage ranges below are approximate industry estimates, kept consistent with our surety bond cost guide; your bound rate depends on your full file.
Get a real construction bond quote
Tell us the contract value and your credit band and we pull a quote against the same credit-tier and project-size pricing this page walks through. Performance, payment, and bid bonds for federal Miller Act, state Little Miller Act, and private commercial work are all supported.
- ✓Treasury-listed carriers for federal contracts
- ✓SBA Surety Bond Guarantee Program submissions
- ✓Bid bonds issued free for prequalified contractors
What you pay is a fraction of the bond amount
The number that scares contractors — “a $1,000,000 bond” — is the penal sum, the maximum the surety guarantees to the project owner if you default. It is not your cost. Your cost is the premium: a small annual percentage of the contract amount. On that $1,000,000 bond the premium is roughly $5,000 to $30,000 per year depending on credit, not $1,000,000. Get this one distinction right and the tables below make sense.
Bond amount (penal sum)
$1,000,000
Set by the contract or statute. Federal construction bonds are 100% of the contract price; most state public works mirror that. This is the guarantee, not a charge.
Premium (what you pay)
$5,000 – $30,000/yr
The contract percentage × your credit tier, billed annually for the life of the bond. Credit, working capital, and financials move it within this range.
Table A: Construction bond cost by credit tier
Credit is the dominant lever on a construction bond rate. The personal credit score of the indemnifying owner(s) drops you into a pricing tier, and that tier sets the percentage applied to the contract. The infographic below shows the worked annual premium on a $1,000,000 bond for each tier — the same job priced five different ways purely by credit.
Construction Bond Premium by Credit Tier
Based on a $1,000,000 bond amount
- Excellent (750+)Rate: 0.5% – 1.0%$5,000 – $10,000 / yr
- Good (700–749)Rate: 1.0% – 1.5%$10,000 – $15,000 / yr
- Fair (650–699)Rate: 1.5% – 2.5%$15,000 – $25,000 / yr
- Poor (600–649)Rate: 2.5% – 4.0%$25,000 – $40,000 / yr
- Bad (under 600)Rate: 4.0% – 10%+$40,000 – $100,000+ · SBA route
Annual premiums shown on a $1,000,000 construction performance bond. Percentages are approximate industry estimates consistent with our surety bond cost guide, not regulated rates — your bound rate depends on credit, financials, and bonding capacity. Contractors under 650 who cannot qualify in the standard market can often get bonded through the SBA Surety Bond Guarantee Program at rates closer to standard plus the 0.6% small-business fee.
| Credit tier | Approx. rate | $1,000,000 bond example |
|---|---|---|
| Excellent (750+) | 0.5% – 1.0% | $5,000 – $10,000 / yr |
| Good (700–749) | 1.0% – 1.5% | $10,000 – $15,000 / yr |
| Fair (650–699) | 1.5% – 2.5% | $15,000 – $25,000 / yr |
| Poor (600–649) | 2.5% – 4.0% | $25,000 – $40,000 / yr |
| Bad (under 600) | 4.0% – 10%+ | $40,000 – $100,000+ / yr (often SBA-backed) |
Approximate ranges only, consistent with the credit-tier pricing on our surety bond cost guide. Larger contracts often price toward the lower end of each tier and small contracts toward the higher end. Carriers also weigh the company's financials, not just personal credit.
Table B: Construction bond cost by project size
Because the premium is a percentage of the contract, the dollar cost scales with the size of the job. The table below shows the annual premium at the three rates most contractors will actually see — 1% (strong credit), 2% (fair credit or a smaller job), and 3% (the top of the standard range) — across common contract sizes. Find your contract size and your credit tier, and read across.
| Contract / bond amount | At 1% (strong credit) | At 2% (fair credit) | At 3% (top of range) |
|---|---|---|---|
| $100,000 | $1,000 / yr | $2,000 / yr | $3,000 / yr |
| $250,000 | $2,500 / yr | $5,000 / yr | $7,500 / yr |
| $500,000 | $5,000 / yr | $10,000 / yr | $15,000 / yr |
| $1,000,000 | $10,000 / yr | $20,000 / yr | $30,000 / yr |
| $5,000,000 | $50,000 / yr | $100,000 / yr | $150,000 / yr |
Each cell is simply the contract amount × the rate. In practice large bonds often price on a tiered sliding scale and come in below a flat percentage — our two-variable calculation method shows how. Use these as planning figures, then confirm with the calculator.
Worked example. A general contractor with a 690 credit score (Fair tier, ~2%) wins a $500,000 state public works job requiring a performance bond and a payment bond. The performance bond premium is about $500,000 × 2% = $10,000 per year. The payment bond usually rides on the same underwriting and adds little or nothing because the exposure overlaps. If that same contractor had 760 credit, the rate drops to roughly 1% and the premium falls to about $5,000 — same job, half the cost, purely on credit.
What drives your construction bond rate
Within the ranges above, six underwriting inputs decide where your rate lands. The first is by far the heaviest, but the rest are what separate a contractor who prices at the bottom of a tier from one who prices at the top of the same tier.
What a bid bond costs (usually nothing)
A bid bond guarantees that if you win the job you will enter the contract and post the performance and payment bonds. For a contractor the surety has already prequalified for that job, the bid bond is almost always issued free — the carrier treats it as the on-ramp to the performance bond premium it expects to earn on the award. You should not expect a percentage-of-contract charge just to bid.
Prequalified contractor
$0
Issued free as part of your bonding line. The surety earns on the performance and payment bonds that follow if you win.
Standalone bid-only
$100 – a few hundred
A small flat fee when a carrier writes a bid bond without the follow-on commitment — not a percentage of the contract.
Full detail on solicitation percentages (the “5% or 10% bid bond” a bid package specs) and how they translate to actual cost lives on our bid bond cost page. Under the SBA Surety Bond Guarantee Program, bid bonds carry no SBA guarantee fee at all.
How to lower your construction bond cost
Because credit and financials set the rate, the levers that lower it are the same ones that strengthen those inputs. The biggest single move for a credit-challenged contractor is the SBA program below.
Strengthen the financials before you apply
Improve personal credit (it is the heaviest factor), build working capital so a bond sits comfortably within your capacity, and resolve any open liens or judgments. Even a modest credit improvement can move you a full pricing tier.
Get a CPA financial statement and a clean WIP
Moving from internal numbers to a reviewed or audited CPA statement, paired with a current work-in-progress schedule that shows jobs finishing on or above bid, is often the difference between a top-of-tier and a bottom-of-tier rate on larger bonds.
The SBA Surety Bond Guarantee Program
If your credit or financials keep you out of the standard market, the U.S. Small Business Administration's Surety Bond Guarantee Program is the most reliable way to get bonded and still control cost. The SBA backstops the surety — guaranteeing 80% to 90% of the bond — which lets a participating carrier issue a bond it would otherwise decline, and price it closer to standard-market rates instead of the 4%–10%+ a subprime file would face on its own.
Bond size limit
Guarantees on contracts up to $9 million (and up to $14 million on federal contracts when a contracting officer certifies the need).
Small-business fee
The small-business fee is 0.6% of the contract amount on performance and payment bonds; bid bonds are free under the program.
Program limits and fees are published by the SBA at sba.gov. We can submit your file to the program — start with the form above or the calculator below to see your standard-market rate first, then compare. For federal jobs specifically, the bond requirement itself is triggered above $100,000 by the Miller Act (40 U.S.C. § 3131), with the operative procurement threshold set at $150,000 by FAR 28.102-1.
Run your contract value through the calculator
Enter your contract amount and credit band into our construction bond calculator and it returns the required bond amount and the annual premium against the same credit-tier pricing on this page. Need the performance-bond-specific tool? Use the performance bond calculator.
The construction bond premium formula
Rate is the approximate credit-tier percentage from Table A applied to the contract amount (the bond penal sum). Large bonds often price on a tiered sliding scale below a flat percentage. Percentages are approximate industry estimates consistent with our surety bond cost guide, not statutory rates; verify your quote before binding. Reviewed June 2026.
All content is researched from official state and federal sources (.gov) and verified before publication. BuySuretyBonds.com works with Treasury-certified, A-minimum rated surety carriers serving all 50 states.
Construction bond cost FAQ
How much does a $500,000 performance bond cost?
Is a bid bond free?
Why is my construction bond rate higher than 1%?
Does credit affect construction bond cost?
What does a $1 million construction bond cost?
Do I pay the construction bond premium every year?
Keep reading
Construction Bonds: The Full Guide
The hub page covering performance, payment, and bid bonds for construction.
Types of Construction Bonds
Bid, performance, payment, and maintenance bonds — what each one does.
Performance Bond Cost
Pricing detail for the performance bond specifically.
Performance Bond Cost by State
How thresholds and rates change across state public works.
Bonding Capacity Guide
How sureties cap your bonded work — and how to raise the ceiling.
Surety Bond Cost Guide
Pricing across every bond type, by credit and bond amount.
Stop estimating — price your construction bond
You have seen how credit and project size move the rate. Now get the real number for your job. The form takes two minutes and connects you with Treasury-listed, A-rated carriers — and we can route credit-challenged files to the SBA Surety Bond Guarantee Program when that is the better path.
Want to run the math first? The construction bond calculator gives an instant premium estimate before you apply, and the construction bonds overview covers what each bond does.