General contractors deal with contractors bonding and insurance on every project, yet confusion around these requirements costs firms thousands each year. A 2025 Surety and Fidelity Association of America report found that 23% of bond claims on commercial projects traced back to misunderstandings about coverage overlap between bonds and insurance. This guide answers the questions GCs ask most often about bonding and insurance requirements.

Understanding how bonds and insurance work together is the foundation of solid risk management. A performance bond protects the project owner. Insurance protects against third-party claims. Both are required on most commercial and public construction projects, but they serve different purposes.

How Contractors Bonding and Insurance Work Together on Construction Projects

Bonds and insurance address different risks. A surety bond is a three-party agreement between the contractor, the project owner, and the surety company. If the contractor fails to complete the work, the surety steps in to finish it or compensate the owner. Insurance, on the other hand, covers bodily injury, property damage, and other liabilities that arise during construction.

The key difference is repayment. When a surety pays a bond claim, the contractor must repay the surety. When an insurer pays an insurance claim, the contractor does not repay the insurer. This distinction matters because it affects how GCs evaluate subcontractor financial health.

Bid bonds guarantee that a contractor will honor their bid price. They typically cost 5-10% of the bid amount and expire when the contract is awarded.

Performance bonds guarantee project completion. They usually equal 100% of the contract value on public projects and 50-100% on private projects.

Payment bonds guarantee that the contractor will pay subcontractors and suppliers. Federal projects over $150,000 require payment bonds under the Miller Act.

Bond/Insurance Type	What It Covers	Who It Protects	Typical Cost	Required On
Bid Bond	Bid withdrawal risk	Project owner	5-10% of bid	Public projects over $150K
Performance Bond	Project completion	Project owner	1-3% of contract value	Public + many private
Payment Bond	Sub/supplier payment	Subs and suppliers	1-3% of contract value	Federal projects (Miller Act)
General Liability	Bodily injury, property damage	Third parties	$2,500-$15,000/year	All projects
Workers Comp	Employee injuries	Employees	Varies by state/payroll	All projects (most states)
Builders Risk	Property damage during construction	Owner/contractor	1-4% of project value	Most projects

State-by-State Bonding Thresholds

Every state sets its own rules for when bonds are required on public projects. The Miller Act governs federal projects with a $150,000 threshold, but state "Little Miller Acts" vary widely.

Low threshold states (bonds required on projects as small as $25,000): Arkansas, Kentucky, Mississippi, and South Carolina require bonds on relatively small public projects. GCs working in these states need bonding capacity even for minor contracts.

High threshold states (bonds required only above $100,000-$150,000): California, New York, and Texas set higher thresholds. Private projects in these states rarely require bonds unless the owner demands them.

No bonding requirement states: A handful of states do not have mandatory bonding requirements for all public projects. However, most project owners in these states still require bonds contractually.

GCs operating across state lines must track these variations. A subcontractor bonded in Georgia may not meet Florida's requirements. SubcontractorAudit tracks bonding status alongside insurance compliance to flag gaps before they delay project starts.

Common Misconceptions About Contractors Bonding and Insurance

Misconception 1: A bond replaces insurance. Bonds and insurance serve different functions. A performance bond does not cover a slip-and-fall on the job site. General liability insurance does not guarantee project completion. GCs need both.

Misconception 2: All subcontractors can get bonded. Surety companies evaluate financial statements, work history, and credit before issuing bonds. Subcontractors with less than three years of operating history or weak financials may not qualify. About 15% of subcontractors fail to meet bonding requirements on their first attempt.

Misconception 3: The GC's bond covers subcontractor work. A GC's performance bond covers the GC's obligation to the owner. If a subcontractor defaults, the GC must still perform. The GC may require the sub to carry their own bond to transfer that risk.

Misconception 4: Bonding capacity is unlimited. Every contractor has a bonding limit based on their financial profile. A contractor with $5M in bonding capacity cannot take on a $6M bonded project without increasing their limit. Surety companies review financials annually to set these limits.

How to Verify Subcontractor Bonding and Insurance

Verifying subcontractor bonds and insurance before contract execution prevents costly gaps. Follow this process:

Request the bond letter from the sub's surety company. Confirm the bonding limit covers the subcontract value.
Verify the surety company is listed on the U.S. Treasury Department's Circular 570. This confirms the surety is authorized to issue bonds on federal projects.
Collect certificates of insurance showing general liability, workers compensation, and auto coverage. Confirm limits meet your contract requirements.
Check that your company is listed as additional insured on the sub's general liability policy. Request the endorsement page, not just the certificate.
Set up expiration monitoring. Bonds and insurance policies expire on different dates. Track both.

For deeper coverage on risk transfer through indemnification clauses, read our pillar guide. You can also explore specific risk transfer examples in construction contracts.

FAQs

What is the difference between a bond and an insurance policy for contractors? A bond is a guarantee that the contractor will fulfill their obligations. If the contractor defaults, the surety pays the claim and the contractor must repay the surety. An insurance policy covers losses from accidents, injuries, or property damage. The contractor pays premiums and is not required to repay claims. Bonds protect the project owner. Insurance protects third parties.

How much does a performance bond cost for a construction project? Performance bonds typically cost 1-3% of the contract value. A $1M project would require a bond premium of $10,000 to $30,000. The exact rate depends on the contractor's financial strength, credit history, and project complexity. Contractors with strong financials and track records pay rates closer to 1%.

Can a general contractor require subcontractors to carry bonds? Yes. GCs can require subcontractors to carry performance and payment bonds as a condition of the subcontract. This is common on projects where the GC's own bond is at risk if a subcontractor defaults. Typical sub-bond requirements range from 50-100% of the subcontract value.

What happens if a subcontractor's bond expires during a project? An expired bond leaves the GC exposed if the subcontractor defaults. The GC should stop work authorization for that subcontractor until a renewed bond is in place. Most surety bonds run for the duration of the project, but some annual bonds can lapse if the contractor fails to renew.

Do all states require performance bonds on public construction projects? Most states require performance bonds on public projects above certain thresholds. Federal projects over $150,000 require bonds under the Miller Act. State thresholds range from $25,000 to $150,000. Private projects do not legally require bonds unless the owner includes them in the contract.

How does a GC track bonding and insurance status for all subcontractors? Manual tracking with spreadsheets works for small firms with fewer than 20 active subs. Beyond that, automated platforms like SubcontractorAudit track bond expiration dates alongside insurance certificates in a single dashboard. The platform sends alerts before bonds or policies expire and flags compliance gaps in real time.

Track Bonding and Insurance in One Platform

SubcontractorAudit monitors subcontractor bonds and insurance certificates from a single compliance dashboard. Get automated alerts, coverage gap detection, and real-time status tracking. Request a demo to see how it works for your projects.