Performance bonds and contract surety: a contractor's complete guide

What a performance bond does

When an owner hires a contractor, it is trusting that the contractor will finish the job on time, to specification, and within the contract price. A performance bond backs that promise with a surety company's financial strength. If the contractor defaults, the owner can make a claim, and the surety steps in to see the project completed or to compensate the owner up to the penal sum, the dollar amount of the bond.

Three parties are involved. The principal is the contractor who must perform. The obligee is the owner or agency that requires the bond. The surety is the company that guarantees the principal's performance. Unlike insurance, the surety expects to be repaid for any loss, which is why sureties underwrite contractors much the way a bank underwrites a borrower.

The contract bond family

Learn more about each in our bond guides: performance bonds, payment bonds, bid bonds, maintenance bonds, and supply bonds.

Why public owners require bonds

Public owners cannot accept the risk that a low bidder walks away halfway through a school, a road, or a water plant. Mechanic's liens generally cannot attach to public property, so subcontractors and suppliers need another form of protection. Federal law, known as the Miller Act, requires performance and payment bonds on federal construction contracts above a threshold set in the Federal Acquisition Regulation. Every state has its own version, often called a Little Miller Act, covering state and local public works.

Our guide to public works bond laws explains how these rules work and links to state statutes where we can cite them.

What sureties look at: the three Cs

Surety underwriting is usually summarized as character, capacity, and capital.

• Character: your reputation, history of completing work, how you treat subcontractors and suppliers, and your personal credit.
• Capacity: whether you have the experience, people, equipment, and management systems to perform the specific job and your overall backlog.
• Capital: working capital, net worth, cash flow, and bank lines that let you absorb a problem job without failing.

For small bonds, sureties may rely mostly on credit and a short application. As bond sizes grow, they ask for CPA-prepared financial statements, work-in-progress schedules, bank references, and a business plan.

Building bonding capacity

Bonding capacity is expressed as a single-job limit and an aggregate program limit. A contractor with a strong balance sheet and clean history might be approved for larger single jobs and a larger total backlog than a newer company with the same revenue. Capacity is not a fixed formula; each surety weighs your finances, experience, and the type of work.

1. Keep clean, timely financial statements, ideally reviewed or audited by a CPA familiar with construction accounting.
2. Use percentage-of-completion accounting and keep an accurate work-in-progress schedule.
3. Build working capital by retaining earnings rather than distributing everything.
4. Maintain a bank line of credit that is not fully drawn.
5. Grow job size gradually and document successful completions.
6. Pay subcontractors and suppliers promptly; payment complaints reach sureties quickly.
7. Keep personal credit strong, since owners usually sign the indemnity agreement.

See our bonding capacity guide for more detail.

The indemnity agreement

Before issuing bonds, the surety will ask the company and usually its owners and their spouses to sign a general indemnity agreement. It promises that you will reimburse the surety for any loss and expense, including legal fees, and it often gives the surety rights over contract funds and collateral in a default. Read it carefully, ask questions, and understand that personal assets may be at stake.

What affects your bond premium

Bond premiums are a percentage of the contract amount, usually charged on a sliding scale so that larger contracts carry a lower rate on the upper portion. Sureties set rates for each account; there is no single published price. The main drivers are:

• Credit scores of the owners and the company
• Strength of financial statements, working capital, and net worth
• Years in business and the size of jobs you have completed
• Type of work and its complexity
• Contract length, warranty period, and contract terms
• Your current backlog compared with your capacity

Our performance bond cost factors guide explains how sureties approach pricing without quoting rates that may not apply to you.

Bid bonds and the path to award

A bid bond is often the first bond a contractor needs. It tells the owner that if you win, you will sign the contract and furnish the required performance and payment bonds. If you fail to do so, the owner can claim the difference between your bid and the next acceptable bid, up to the bid bond amount. Because the surety is effectively pre-approving your final bonds, get the bid bond request in early and make sure the job fits your program.

Subcontractor bonds

General contractors increasingly ask key subcontractors to provide their own performance and payment bonds, especially for large trade packages such as mechanical, electrical, concrete, and steel. If you are a subcontractor, treat these requests like any other bonded work: confirm the bond form, the penal sum, and any unusual terms before you sign the subcontract.

Reading the bond form

Owners often specify their own bond forms. Pay attention to the penal sum, the definition of default, notice requirements, warranty or maintenance obligations folded into the performance bond, and any language that extends liability beyond the contract. Industry standard forms are generally more predictable than custom ones. Send the form to your surety contact before bid day.

Getting bonded for the first time

New contractors can get bonded, usually starting with smaller jobs. Expect to provide personal financial statements, credit information, a resume of construction experience, a list of completed projects, and business financial statements if available. Some programs designed for smaller contractors rely more on credit and experience. Our how to get bonded guide walks through the process, and our prequalification checklist lists the documents.

License and permit bonds

Many contractors also need license or permit bonds required by a state licensing board or a city before they can work. These are commercial surety bonds rather than contract bonds and are usually simpler to obtain. See license and permit bonds.

How a surety reviews a contractor

Surety underwriting is often summarized as the three Cs: character, capacity, and capital. Character is your reputation for finishing work and paying your bills. Underwriters call references, look at your history with owners and subcontractors, and review the personal credit of the owners who will sign the indemnity agreement. Capacity is your ability to do the work: the experience of your key people, the equipment you own or can rent, the size and type of jobs you have completed, and whether the job in front of you fits that history. Capital is the money behind the company, measured mostly through working capital and net worth on your financial statements.

None of the three stands alone. A contractor with strong financial statements but no experience in a new type of work may be declined for that job. A contractor with decades of experience but thin working capital may be approved for smaller bonds only. The goal of the review is to judge whether you are likely to finish the project and pay everyone who works on it, because the surety expects never to pay a claim, and to be repaid if it does.

Financial statements and why their quality matters

For small bonds, many sureties will work from a short application and the owners' personal credit. As the bond amounts grow, the financial statement becomes the center of the file. Underwriters generally prefer statements prepared by a CPA who understands construction accounting. A compiled statement is the most basic level, a reviewed statement adds analytical procedures, and an audited statement provides the most assurance. Larger bonding programs usually require reviewed or audited statements.

Construction accounting has features that general accountants sometimes miss. Revenue on long jobs is usually recognized using the percentage-of-completion method, and the statement should show overbillings and underbillings on contracts in progress. Underbillings, where you have done more work than you have billed, can signal problems and are often discounted by underwriters. Overbillings are normal in moderation but are a liability. Clean, timely statements, delivered within a few months of your fiscal year-end, make every later bond request faster.

The work-in-progress schedule

Alongside the year-end statement, sureties ask for a work-in-progress schedule, often called a WIP. It lists every open job with the contract amount, estimated total cost, costs to date, billings to date, and the estimated gross profit. Underwriters compare the WIP over time to see whether profit estimates hold up or fade as jobs progress. Profit fade, where expected margins shrink as a job nears completion, is one of the warning signs sureties watch most closely, because it can point to weak estimating or field problems.

Keeping an accurate WIP is also good management. Contractors who update it monthly tend to spot cost overruns early, and they can answer underwriters' questions quickly when a new bid comes up. Many sureties ask for an updated WIP before approving a large bond even if your year-end statement is recent.

The indemnity agreement

Before a surety issues bonds, it requires a general indemnity agreement. The company signs it, and in most cases so do the owners and their spouses, personally. The agreement obligates the signers to reimburse the surety for any loss and related expenses if a claim is paid. It often gives the surety rights to demand collateral if a claim is made and to take assignment of contract funds or equipment in a default. Read it carefully and ask questions before signing; it is a serious personal commitment and the foundation of the surety relationship.

Bond claims and how to avoid them

Most bond claims grow out of a handful of problems: underbidding a job, taking on work outside your experience, cash flow strain from slow pay or too many jobs at once, and disputes with subcontractors or suppliers that end in unpaid invoices. Payment bond claims are the most common, filed by subcontractors and suppliers who have not been paid. Performance bond claims are less frequent but more costly, since they can involve completing or re-letting the work.

When a claim arrives, the surety investigates and asks the contractor for its position. Responding quickly, documenting the dispute, and resolving legitimate debts are the best ways to protect your bonding capacity. A contractor who works with the surety through a claim usually keeps its program; one who ignores the surety rarely does.

Private projects and subcontractor bonds

Bonds are not only for public work. Private owners and lenders on larger commercial, multifamily, and industrial projects often require performance and payment bonds from the general contractor. General contractors, in turn, may require bonds from major subcontractors such as mechanical, electrical, concrete, and steel trades. Because private projects are not covered by public works bond statutes, the bond form and the contract define the obligations, so read both before you sign. Some private owners use mechanics' lien rights and retention instead of bonds; others insist on both.

Growing from your first bond to a bonding program

New contractors usually start with smaller bonds approved on personal credit and experience. As you complete bonded jobs, keep clean financial statements, and show steady profits, the surety can raise your single-job and aggregate limits. Retaining earnings in the business rather than distributing them builds working capital, which is one of the most direct ways to grow capacity. A business line of credit from your bank, unused, also helps. Over time, many contractors move from one-off bond approvals to an established program with a pre-agreed limit, which makes bidding simpler.

Bond quote checklist

• Company legal name, entity type, and years in business
• Owners' names and ownership percentages
• Type of work and largest jobs completed in the past five years
• The bond you need: bid, performance, payment, maintenance, supply, or license
• Project details: owner, location, contract amount, schedule, and bond form
• Most recent year-end financial statements and interim statements
• Work-in-progress schedule
• Bank line of credit details
• Personal financial statements for owners, if requested

How to use this site

Choose your state to see construction industry data, public works bond rules, and guides for the largest cities. Read the bond guides that apply to your work, then send a bond request. A quote is not a binder, and every bond is subject to surety underwriting.

Find your state

• Washington
• Oregon
• Idaho
• Nevada
• Arkansas
• Arizona
• South Dakota
• Pennsylvania
• Texas
• Indiana

Bond types and guides

• Performance bonds for contractors
• Payment bonds
• Bid bonds
• Maintenance bonds
• Supply bonds
• Contractor license and permit bonds
• How to get bonded as a contractor
• Bonding capacity explained
• What determines performance bond cost
• Public works bond laws: the Miller Act and state statutes
• Surety prequalification checklist for contractors

Performance bond questions

Last updated October 15, 2026 · How we research