What Is a Contractor Bond?
A bond is not insurance — it's a financial guarantee. When you're bonded, a surety company guarantees to your clients that you'll fulfill your contractual obligations. If you don't (you abandon a project, fail to pay subs, do poor work), the surety pays the claim and then comes after you to recover the money.
Think of it as a credit line for your professional reputation. The surety is saying, "We've vetted this contractor and we'll back them up."
Three parties in every bond:
1. Principal — You, the contractor
2. Obligee — The person or government requiring the bond (client, licensing board, project owner)
3. Surety — The insurance company backing the bond
Contractor License Bond
What it is: Required by most states as a condition of getting or maintaining your contractor's license. Protects customers from incomplete or defective work.
Amount required: Varies by state — typically $10,000–$50,000. California requires $25,000; Washington requires $12,000.
Cost: 1–3% of the bond amount annually. A $25,000 bond costs $250–$750/year. (New contractors or those with poor credit pay more.)
What it covers: Customer claims of incomplete work, building code violations, failure to pay for permits.
Important: The bond amount is the maximum payout — not your total premium. Your premium is the small annual fee.
Performance Bond
What it is: Guarantees you'll complete a project according to the contract terms. Protects the project owner.
When required: Almost always required on public construction projects over $150,000 (Miller Act for federal; Little Miller Acts for states). Increasingly required on large commercial private projects.
Amount: 100% of the contract value. On a $5 million project, the performance bond is $5 million.
Cost: Typically 0.5–3% of the contract value depending on bond size, your financials, and your bonding history. A $1M project: $5,000–$30,000.
To get bonded for large projects, sureties look at:
- Your company's financial statements
- Your credit score (personal and business)
- Your completed project history
- Working capital (current assets minus current liabilities)
- Net worth
Payment Bond
What it is: Guarantees you'll pay your subcontractors, suppliers, and workers. Protects subs and suppliers if you don't pay.
When required: Required with performance bonds on most public projects. The Miller Act requires both a performance and payment bond for federal projects over $150,000.
Amount: Typically 100% of contract value.
Cost: Usually packaged with the performance bond; combined cost is 0.5–3% of contract value.
For subs and suppliers: A payment bond means you have recourse if the GC doesn't pay — you can make a claim directly on the bond.
Bid Bond
What it is: Guarantees that if you win a bid, you'll actually execute the contract at the bid price.
When required: Required on most public project bids. Sometimes on private commercial bids.
Amount: Typically 5–10% of the bid price.
Cost: Usually free or very low cost (under $200) from sureties who plan to issue your performance/payment bond if you win.
What happens if you back out: The obligee can collect the bid bond amount as liquidated damages for their re-bidding costs.
How to Get Bonded: The Process
1. Contact a surety agent — A surety agent (different from an insurance agent, though many carry both) will guide you through the process. Surety agents represent multiple surety companies.
2. Complete an application — For small license bonds, this is a one-page form with basic info. For large performance/payment bonds, expect to provide financial statements, credit authorization, and detailed company history.
3. Underwriting review — The surety evaluates your creditworthiness. For bonds over $500K, they'll want 2–3 years of financial statements, a current balance sheet, and may review your banking relationships.
4. Approval and pricing — If approved, you receive a bond quote. Premium rates depend on your credit (personal 680+ helps significantly), financial strength, and bonding track record.
Building your bonding capacity:
- Pay your subs and suppliers on time — every time
- Keep financials organized and professionally prepared
- Maintain positive working capital (1.3:1 ratio minimum)
- Build a track record of completed projects
- Establish banking relationships (line of credit helps)
Start small: Most contractors begin with $500K–$1M bonding capacity and grow as their track record develops.