In this guide
Insurance protects you from your own losses. A surety bond protects someone else, such as a client or a government agency, by guaranteeing that you will do what you promised. If you fail and the surety pays, you generally must pay the surety back. That repayment obligation is the biggest difference between a bond and an insurance policy.
Key takeaways
- A surety bond involves three parties: the principal (you), the obligee (who requires the bond) and the surety (the company that backs it).
- Insurance is usually a two-party agreement that transfers risk from you to the insurer. A bond is more like a form of credit and prequalification.
- If a bond claim is paid, the principal usually has to reimburse the surety, and an indemnity agreement is common.
- Many contractors and licensed trades need bonds in addition to liability insurance, not instead of it.
How a surety bond works
A surety bond is a three-party contract. The principal is the business or person who must perform, such as a contractor. The obligee is the party that requires the bond and is protected by it, such as a project owner or a licensing agency. The surety is the company that guarantees the principal's performance.
If the principal fails to meet the obligation, the obligee can make a claim. The surety may investigate, and if the claim is valid it may pay the obligee, finish the work or take other steps the bond allows. The principal then generally owes the surety for what it paid, plus costs.
This is why surety underwriting looks at your financial strength, experience and credit more than it looks at statistics about accidents. The surety is effectively vouching for you.
Common types of bonds
| Bond type | What it guarantees | Where it comes up |
|---|---|---|
| Bid bond | That you will sign the contract and provide required bonds if you win the bid | Public and some private construction bidding |
| Performance bond | That you will complete the project according to the contract | Construction and other contracts |
| Payment bond | That subcontractors and suppliers will be paid | Construction projects |
| License and permit bond | That you will follow the rules of a licensing law | Trades and regulated businesses, often set by state or city |
| Fidelity or employee dishonesty bond | Protection against theft by employees, in some forms | Businesses handling money or client property |
| Court bond | Obligations tied to a legal proceeding | Litigation and estate matters |
Rules for which bonds you need vary widely by state, city and contract. Your licensing agency or the party requesting the bond is the best source for exact requirements.
Surety bonds vs. insurance side by side
| Feature | Surety bond | Insurance |
|---|---|---|
| Parties | Three: principal, obligee, surety | Usually two: insurer and policyholder |
| Who is protected | Mainly the obligee | The policyholder |
| Who pays in the end | The principal usually reimburses the surety | The insurer absorbs covered losses; no repayment |
| Expectation of loss | Losses are not expected; the surety is lending its credit | Some losses are expected and priced in |
| Underwriting focus | Financial capacity, experience, character | Risk factors and loss history |
| Typical cost | A percentage of the bond amount, depending on risk | A premium based on exposure and coverage |
The industry sources we reviewed consistently describe these differences, even though they are written from the perspective of surety and insurance providers rather than regulators. For legal definitions in your state, check your state insurance department and the bond form itself.
Why you may need both
A contractor can carry general liability insurance and still be asked for a performance bond. Insurance answers questions like "what if someone is injured?" A bond answers "what if the contractor does not finish the work?" They solve different problems. Our overview of contractor insurance and general and professional liability shows where insurance fits.
Contract documents often list both insurance and bond requirements. Insurance requirements can be proven with a certificate of insurance, and the other party may require additional insured status. Bonds are proven with the bond form issued by the surety.
Federal contracts and the Miller Act
Federal construction contracts are a well-known example of mandatory bonds. The Miller Act requires performance and payment bonds on federal construction, alteration or repair contracts above a threshold. The statute text says "more than $100,000," and the Federal Acquisition Regulation currently states the threshold as "exceeding $150,000" for construction contracts. For smaller federal jobs, agencies can use other protections.
Corporate sureties on federal bonds must appear on the U.S. Treasury's Circular 570 list of approved companies. Treasury notes that certificates of authority expire July 31 and are renewable August 1 each year, and that the list is updated, so check the current list before you rely on a surety for a federal job.
Good to know: Many states have their own "little Miller Acts" for public projects, with different thresholds. Check your state's rules if you bid on state or local work.
Help for small businesses getting bonded
New or small firms sometimes struggle to get bonds because they have limited financial history. The U.S. Small Business Administration runs a Surety Bond Guarantee program that guarantees bonds issued by participating sureties for eligible small businesses. As of 2026, SBA says it can support contracts up to $9 million, or up to $14 million for federal contracts when a federal contracting officer certifies the need. The guarantee is to the surety, not to you, and the program has its own fees and eligibility rules. Check SBA's current program page for details.
What bonds cost and how to qualify
Bond premiums are usually a percentage of the bond amount, and the percentage can vary significantly with your credit, finances and the type of bond. Some license bonds are small and relatively simple, while construction bonds often need financial statements and work history. We do not quote prices here because they vary too much to generalize.
- Identify the exact bond. Get the form, amount and obligee from the requirement.
- Gather your information. Be ready with business details, personal and business credit information and, for larger bonds, financial statements.
- Work with a surety agent. Compare quotes from several surety providers or agents, and ask about indemnity terms.
- Read the indemnity agreement. You may be personally on the hook for repayment. Consider having an attorney review it.
- File the bond as required. Submit the bond to the obligee and track renewal dates.
Watch out: A bond is not a safety net for you. If a claim is paid, expect the surety to seek reimbursement. Treat a bond claim as a serious financial event, not as a covered loss.
If you are still sorting out the basics of what your business needs, start with our small business insurance guide.
Frequently asked questions
Is a surety bond a type of insurance?
Not in the usual sense. Sureties are often regulated by state insurance departments, but a bond functions more like a guarantee and credit arrangement, and the principal usually must repay the surety.
Who is protected by a surety bond?
The obligee, which is the party requiring the bond. The principal is not protected in the way an insured is.
What is an indemnity agreement?
It is a contract in which the principal, and sometimes owners personally, agree to repay the surety for claims and expenses. Read it carefully before signing.
Do I need a bond if I have liability insurance?
Possibly. They cover different things. Insurance responds to covered accidents and injuries, while a bond guarantees performance or compliance. Your contract or license requirements will say which you need.
How can I check if a surety is approved for federal work?
U.S. Treasury publishes Circular 570, a list of companies holding certificates of authority as acceptable sureties on federal bonds. Check the current list on Treasury's website.
Sources
- U.S. Small Business Administration – Surety bonds
- U.S. Small Business Administration – Statutory increases for the Surety Bond Guarantee Program
- Cornell Legal Information Institute – 40 U.S.C. 3131 (Miller Act bonds)
- Acquisition.gov – FAR 28.102-1, Bond requirements
- U.S. Treasury Fiscal Service – Circular 570, approved sureties
- 13 CFR 115.12 – SBA surety bond program policies
General information only. This guide explains general concepts and is not insurance, legal or financial advice. Rules and prices vary by state and insurer. Check your policy documents and speak to a licensed insurance professional or your state insurance department about your situation.