What is a performance bond? Parties, cost, and claims

A performance bond is a three-party guarantee that a contract will be performed. The contractor doing the work buys it, a surety company issues it, and the party that ordered the work holds it. If the contractor fails to perform, the surety has to make the obligation good, up to a fixed maximum written on the face of the bond and called the penal sum. Federal procurement rules state the mechanism in one sentence: a bond is a written instrument executed by a contractor as principal and a second party as surety "to assure fulfillment of the principal's obligations to a third party (the 'obligee' or 'Government'), identified in the bond", and if those obligations are not met, "the bond assures payment, to the extent stipulated, of any loss sustained by the obligee." [2]

Two things follow, and both are easy to miss. A performance bond is not insurance: the surety expects to be paid back by the contractor, so the contractor carries the loss. And it sits among several related instruments that get called by similar names and behave differently once something goes wrong.

Performance guarantee, contract performance bond, and construction performance bond all name the same instrument. "Contract bond" is the umbrella term for the family that includes bid, performance, payment, and ancillary bonds, as the U.S. Small Business Administration categorizes them [5]. A payment bond, a bid bond, a maintenance or warranty bond, a bank guarantee, and a parent company guarantee are different instruments, not synonyms, and the comparison section below sets out what each one secures. The worked examples throughout are United States federal rules and two state statutes, because that is where the mechanics are written down in public. This is general information, not legal advice.

How the three-party structure works

An insurance policy has two parties. A performance bond has three, and the third one is why the instrument works the way it does.

The federal Standard Form 25, used on United States government construction contracts, shows the structure on one page. The principal and the surety together state that they "are firmly bound to the United States of America" in the stated penal sum, binding themselves "jointly and severally". The obligation is then voided by performance: it is void if the principal "performs and fulfills all the undertakings, covenants, terms, conditions, and agreements of the contract during the original term of the contract and any extensions thereof ... and during the life of any guaranty required under the contract." [8] So the bond follows contract extensions, stays live through any warranty period the contract requires, and on that form follows duly authorized modifications with notice to the surety expressly waived [8].

Principal

The principal is the party whose performance is guaranteed, normally the prime contractor on a public project. A general contractor is also frequently the obligee on bonds furnished by its own subcontractors, so the same company can be principal on one bond and obligee on another in the same week.

The principal chooses the surety, subject to the obligee accepting it: "Selection of a particular qualified company from among all companies holding certificates of authority is discretionary with the principal required to furnish the bond." [4]

The principal also signs something that never appears in an insurance transaction: a written indemnity agreement running back to the surety. In the SBA's Surety Bond Guarantee program that is not optional. The surety must obtain "from each Principal a written indemnity agreement which covers actual Losses under the Contract", secured "by such collateral as the Surety or SBA finds appropriate." [5]

Obligee

The obligee is the party the bond protects. Only a named obligee can call a bond, which is why the first thing to check on any bond handed to you is whether your legal entity is the one named on it. The obligee's other job is to decide whether the surety offered is one it can rely on, and to say so before work starts rather than after a default.

Surety

The surety is the bonding company. It is not a party to the underlying construction contract, and it is not a lender. It sells the use of its balance sheet.

For federal contracts that balance sheet is vetted in public. Corporate sureties on bonds for contracts performed in the United States or its outlying areas "must appear on the list contained in the Department of the Treasury's Listing of Approved Sureties (Treasury Department Circular 570)" [2]. Unless it protects the excess by one of the methods Treasury's rules allow, a certified company may not underwrite a single risk greater than 10 percent of its paid-up capital and surplus, a figure Treasury calls the underwriting limitation, and Circular 570 publishes each company's limitation and licensed states annually as of August 1 [4]. For Miller Act bonds the permitted protection is coinsurance or reinsurance specifically, not pledged collateral [4]. The penal amount of a bond "should not exceed the surety's underwriting limit stated in the Treasury Department Circular 570", and above that the bond is acceptable only if the excess is coinsured or reinsured and that coinsurance or reinsurance itself stays within each coinsurer's or reinsurer's own underwriting limit [2]. A private obligee is under no such obligation, but the list is public and is a reasonable minimum test.

For the guarantee relationship in a European civil-law framing, including how an accessory guarantee differs from an independent one, see Contracko's glossary entry on surety and personal guarantees.

Why a bond is not insurance

This is not a labelling point, because it decides who carries the loss once a claim is made. Surety is regulated as a class of insurance in many states, and California's Insurance Code, for example, defines "surety insurance" to include "the guaranteeing of behavior of persons and the guaranteeing of performance of contracts" [6].

None of that makes a bond an insurance policy in substance. Insurance transfers risk: you pay a premium, the insurer prices the expected loss into it, and when a covered loss happens the insurer pays and does not come after you for the money. A performance bond does not transfer risk. It transfers the timing and certainty of payment, then routes the loss back to the contractor through the indemnity agreement.

In the SBA's Surety Bond Guarantee program, the regulations make that loop visible. After paying a loss the surety must "pursue all possible sources of salvage and recovery", including "from a defaulted Principal, its guarantors and indemnitors" [5]. The regulations even name the process of negotiating that debt down: an indemnity settlement, which occurs "when a defaulted Principal and its Surety agree upon an amount, less than the actual loss under the bond, which will satisfy the Principal's indebtedness to the Surety." [5] A defaulted contractor is indebted to its surety. A claimant on an insurance policy is not indebted to its insurer.

So a bond claim is a balance sheet event for the contractor rather than a covered loss: whatever the surety pays out, the contractor is expected to repay, along with the surety's costs, subject to whatever settlement it can negotiate. The surety also stays interested for the life of the bond: on federal work it may, on written request, be furnished information "on the progress of the work, payments, and the estimated percentage of completion" for the contract it bonded, which the rule permits rather than compels [2].

When bonds are required

Three separate things can make a performance bond mandatory: a federal statute, a state or local statute, or the contract itself. They do not have the same thresholds, forms, or claim procedures.

Federal construction under the Miller Act

The Miller Act, codified at 40 U.S.C. sections 3131 to 3134, governs bonds on federal construction contracts.

The statute reads: "Before any contract of more than $100,000 is awarded for the construction, alteration, or repair of any public building or public work of the Federal Government, a person must furnish to the Government the following bonds, which become binding when the contract is awarded", and then names two, a performance bond "with a surety satisfactory to the officer awarding the contract, and in an amount the officer considers adequate", and a payment bond protecting everyone supplying labor and material [1]. The two are a pair: above the threshold, a federal construction contract does not get one without the other. The statute also fixes the relationship between the amounts: the payment bond "shall equal the total amount payable by the terms of the contract" unless the awarding officer determines in a writing supported by specific findings that this is impractical, and in no case may it be "less than the amount of the performance bond." [1]

Two different thresholds circulate for that first sentence, and both are real.

• The statute says more than $100,000 [1].
• The Federal Acquisition Regulation, which is what contracting officers apply, says the requirement attaches to "any construction contract exceeding $150,000" [2].

The gap is documented. A 2010 final rule adjusting acquisition-related dollar thresholds for inflation amended FAR 28.102-1 by "removing from paragraphs (a) and (b)(1) '$100,000' and adding '$150,000' in its place", and the preamble states plainly that the Miller Act "requires payment and performance bonds when agencies acquire construction that is valued at more than the Miller Act threshold (raised by this rule from $100,000 to $150,000)." [3] That figure is now frozen. Section 861 of the National Defense Authorization Act for fiscal year 2022 added the chapter 31 bond thresholds to the list of thresholds not subject to escalation, and the implementing rule notes that "section 861 requires the thresholds to remain at the current escalated values" [3]. FAR 1.109(c)(1)(i) carries that exclusion today [2].

Three more provisions matter operationally.

Below the threshold, payment protection does not disappear. For construction contracts greater than $35,000 but not greater than $150,000, the contracting officer must select two or more alternative payment protections, "giving particular consideration to inclusion of an irrevocable letter of credit as one of the selected alternatives", the underlying statute setting that band at more than $25,000 and not more than $100,000 [2][1]. These are payment protections. There is no equivalent alternative for performance.

Waivers are narrow and specific. A contracting officer may waive both bonds "for work under a contract that is to be performed in a foreign country if the officer finds that it is impracticable for the contractor to furnish the bonds", and the FAR repeats that waiver for as much of the work as is performed abroad [1][2]. Separately, named service secretaries may waive the subchapter for cost-type construction contracts and for certain vessel, aircraft, munitions and supply contracts [1]. There is no general hardship waiver.

Amounts and timing are prescribed. Unless the contracting officer determines a lesser amount is adequate, the penal amount above the threshold must equal 100 percent of the original contract price, plus an additional 100 percent of any price increase, and all bonds must be furnished "before receiving a notice to proceed with the work or being allowed to start work." [2] Original contract price is a defined term there, and it excludes the price of any option not exercised at award, so a bond written at 100 percent of it does not cover option years until they are priced in [2]. Outside construction, federal agencies generally are not to require these bonds at all, though a performance bond may be required above the simplified acquisition threshold in specific situations [2].

None of these thresholds is a ceiling. The statute expressly does not limit a contracting officer's authority to require a performance bond or other security in addition to, or in cases other than, the ones it specifies, so a contract below the threshold can still carry a bond because the agency asked for one [1].

State and municipal work

Most states have their own public works bonding statute. These are commonly called "Little Miller Acts", and the label misleads if it is taken to mean they are miniature copies of the federal statute. They are not uniform: thresholds, which bonds are required, who the bond is filed with, and the claim procedure all vary. Two states, checked against their own statutes, show how far apart they sit.

California. The threshold sits in a scope definition rather than in the bond clause, which is easy to miss. For the contracts it covers, the State Contract Act requires that "every contract shall provide for the filing of separate performance and payment bonds by the contractor in the form of bonds executed by an admitted surety insurer and not deposits in lieu of bond, subject to the approval of the department." [6] No dollar figure appears there. But the Act only reaches a "project", which it defines as state construction, alteration, repair or improvement exceeding a total cost limit set at $250,000 for calendar year 2010 and adjusted every two years by the Director of Finance to track the California Construction Index [6]. That current figure is set administratively, so read it from the Department of General Services rather than assuming the 2010 number. Separately, the Civil Code requires a payment bond from a direct contractor on a public works contract "involving an expenditure in excess of twenty-five thousand dollars ($25,000)", and that section does not apply to contracts with a state entity, which keeps the two regimes from overlapping [6].

Florida. The statute requires a combined "payment and performance bond with a surety insurer authorized to do business in this state", and adds a step California does not: the bond must be recorded in the public records of the county where the improvement is located, and the public entity may not pay the contractor until it receives a certified copy [7]. The exemptions differ too. "When the work is done for the state and the contract is for $100,000 or less, no payment and performance bond shall be required", while for a county, city, political subdivision or public authority the awarding official may exempt a contract "that is for $200,000 or less" [7]. A bond is also not the only permitted security: in lieu of it a contractor may file cash, a money order, a certified or cashier's check, or a qualifying domestic corporate bond, note or debenture, with the public body setting the required value [7].

So the same job can sit in three regimes that differ in structure, not only in numbers: a federal threshold above $150,000, a Florida exemption power over contracts of $200,000 or less plus a right to substitute cash or a certified check, and a California scope definition that decides whether the bond rule applies at all and then refuses deposits in lieu. Read the state statute you are actually contracting under, including its scope definitions and any substitute-security provision, and check whether a city or agency has layered its own requirement on top.

Private contracts

On private work no statute compels a performance bond. The requirement comes from the contract, which sets the terms too, so there is no default to fall back on and the weight falls on reading the bond form itself. Five questions answer most of what matters:

1. Who is named as obligee? Only that entity can call the bond, so a lender or joint venture partner needing recourse has to be added when the bond is issued.
2. What is the penal sum, and is it a percentage of the original contract price or of the current one?
3. What triggers the surety's obligation? Forms differ on whether a declaration of default, a termination, or a notice and cure sequence comes first.
4. When does the bond expire, and does it run through any warranty or defects period?
5. Which surety issued it, and is that company acceptable to you?

Bonds on private projects are usually one clause in a much larger agreement. For where bonding sits alongside retention, liquidated damages, insurance, and completion mechanics, see what is a construction contract.

Bonds and guarantees compared

Performance bonds, payment bonds, bid bonds, maintenance bonds, bank guarantees and parent company guarantees get conflated constantly, including inside contracts. The differences are about what is secured and who can call it.

Instrument	What it secures	Who can call it
Performance bond	Performance and fulfillment of the contractor's obligations under the contract [2]	The named obligee
Payment bond	Payment to persons supplying labor or material on the work [2]	Unpaid subcontractors and suppliers, not the owner
Bid bond or bid guarantee	That the winning bidder will not withdraw its bid and will execute the contract and furnish the required bonds [2]	The party that ran the tender
Maintenance or warranty bond	Obligations after completion, such as defect rectification. SBA groups these as "ancillary" bonds, covering requirements outside performance or payment "such as maintenance" [5]	The named obligee
Bank guarantee or letter of credit	Payment of a stated sum against a written demand. On federal work an irrevocable letter of credit secures a bond in lieu of a corporate or individual surety, and must "require presentation of no document other than a written demand" and the letter itself [2]	The named beneficiary
Parent company guarantee	A group parent standing behind its subsidiary's obligations, on whatever terms the guarantee document sets. See the glossary entry below, not a US statute	The subsidiary's counterparty

Three of these deserve a note.

Payment bonds protect other people. A payment bond does not compensate an owner for a contractor's failure to build. It exists so unpaid subcontractors and suppliers have a route to payment. On federal work, a supplier unpaid 90 days after last furnishing labor or material may sue on the payment bond, a claimant with no direct contract with the prime must give the prime written notice within 90 days of last furnishing, and suit must be brought no later than one year after that date [1]. Those are payment bond clocks, and applying them to a performance bond dispute is a common and expensive error.

Bid bonds are the front end of the same chain. On federal work a bid guarantee is generally required wherever a performance bond is, and the amount "shall be at least 20 percent of the bid price but shall not exceed $3 million." [2] It funds the gap if the winner walks away instead of executing the contract and producing the bonds.

Bank guarantees pay first and argue later. A letter of credit is drawn with a sight draft against the documents the credit specifies [2]. A performance bond surety behaves differently: it investigates, and it may perform the work instead of paying. For those instruments, see Contracko's glossary entries on the bank guarantee and the parent company guarantee, both written from a Dutch and EU civil-law perspective.

Bond cost and underwriting

No statute, regulator, or public dataset publishes a premium rate for performance bonds, so this guide does not quote a percentage range. Ask your surety or agent for a quote on the actual contract, and read the premium off your own bond documents. What is verifiable is what drives the price and what a surety examines before it takes the risk.

On SBA-guaranteed bonds, the charge is capped by what the insurance department authorizes. A surety in that program "must not charge a Principal an amount greater than that authorized by the appropriate insurance department", and must not charge non-premium fees unless state law permits and the principal agrees [5]. That rule governs the SBA program, not every surety bond written in the United States. Outside it, pricing is constrained by the licensing and rate regulation each state applies to surety insurers, which differs by state.

The exposure being priced is the penal sum, which tracks the contract price. On federal construction work that means the full contract price, as set out above, with any increase adding an equal amount of bond. More contract means more bond, which is why a run of change orders becomes a conversation with the surety and not only a conversation about cash.

Underwriting is credit, capacity, and character. That is SBA's own formulation of what a surety evaluates before it will bond a small business [5]. In ordinary terms: does the contractor pay what it owes, can it finish this job on top of its existing backlog, and what is its record when a job goes badly.

The premium is a project cost that ends up in the contract price, so an owner requiring a bond is paying for it. Federal cost principles treat bonding costs required by the contract as allowable, and bonding costs carried in the general conduct of business as allowable only to the extent the bonding accords with sound business practice and the rates and premiums are reasonable in the circumstances [2]. The federal bond form shows how the charge is expressed: Standard Form 25 carries a bond premium block with a rate per thousand and a total, so the premium is quoted against the contract amount rather than as a flat fee [8].

Contractors that cannot get bonded on their own credit have a federal route: the SBA guarantees bonds issued by participating surety companies for small businesses that would not otherwise qualify. Performance and payment bond guarantees require the business to pay SBA a fee of 0.6 percent of the contract price, and the program covers contracts up to $9 million for non-federal work and up to $14 million for federal work [5].

The performance bond calculator takes a contract start date and duration and returns the end date, the time remaining, and whether the term has already lapsed.

When the obligee calls the bond

Calling a performance bond does not usually produce a payment. It produces an investigation, and then a negotiation about who finishes the work.

Federal default terminations show the sequence in public rules. Under the standard construction default clause, if the contractor fails to prosecute the work with the diligence needed to finish on time, the government may terminate the right to proceed and complete the work "by contract or otherwise", and "the Contractor and its sureties shall be liable for any damage to the Government resulting from the Contractor's refusal or failure to complete the work within the specified time", including increased completion costs [2]. That liability is not automatic. The same clause bars termination and damages where the delay arose from unforeseeable causes beyond the contractor's control and without its fault or negligence, provided the contractor notified the contracting officer in writing within 10 days of the delay beginning, so an excusable delay defended on time protects the surety as well as the contractor [2].

What follows assumes the surety would rather complete than pay. Because it is liable for those damages, the surety has rights and interests in completing the work, so the contracting officer "should permit surety offers to complete the contract, unless the contracting officer believes that the persons or firms proposed by the surety to complete the work are not competent and qualified or the proposal is not in the best interest of the Government." [2] Any takeover agreement must require the surety to complete the contract and the government to pay the surety's costs "up to the balance of the contract price unpaid at the time of default", subject to stated conditions: the defaulting contractor's unpaid earnings and retainage remain subject to debts it owes the government, and the surety is bound by the contract's liquidated damages terms unless the delay is excusable [2]. Two numbers frame the outcome: the unpaid contract balance is the funding available to finish the job, and the penal sum is the ceiling on what the bond adds to it.

Private bond forms set out their own menu of surety responses and their own conditions precedent, so read the notice mechanics in the bond itself, not only the ones in the construction contract. Whatever the form, the last step is the one described earlier: the surety looks to the principal and its indemnitors to recover what it paid [5].

Dates and obligations to track

A performance bond is a document with a lifecycle, not a certificate you file once. These are the calendar events worth an owner's name against them.

Bond delivery, before work starts. All bonds must be in hand before a notice to proceed on federal construction work, and in Florida the public entity cannot pay until the recorded bond's certified copy arrives [2][7]. Record the date proof of bond arrived and treat it as a precondition to mobilization.

Consent of surety on modifications. On federal contracts the contracting officer must obtain the surety's consent in three situations: where an additional bond is obtained from a surety other than the original one, where a novation agreement requires it, and, where no additional bond is required, if the modification either brings in new work beyond the original scope or leaves the scope alone but "changes the contract price (upward or downward) by more than 25 percent or $50,000". The consent goes on Standard Form 1414, and none of this applies where performance is secured by deposited security rather than a surety [2]. Outside federal work the question is the same, so put the check on the modification approval path rather than on someone's memory.

Penal sum against current contract price. Track the gap as a live figure, not a signing-day figure. Where an increase leaves the bond short, the federal remedies are to increase the penal sum, obtain an additional bond, or furnish additional alternative payment protection [2].

Bond term, extensions, and the warranty tail. The federal form binds the surety through the original term, any extensions, and "during the life of any guaranty required under the contract" [8]. Private forms vary and some end at completion, so diarise the actual end date.

Claim deadlines, recorded separately by bond type. The payment bond clocks above run from the last day labor or material was furnished, while performance bond conditions come from the bond form. Keep them as separate reminders so nobody applies one to the other.

Replacement of expiring security. Where an irrevocable letter of credit secures a bond on federal work in lieu of a surety, failure to furnish either an acceptable replacement letter or another acceptable substitute at least 30 days before expiry means the contracting officer draws on it [2].

Release. Tie the release to the contract's completion and defects provisions and give it an owner authorized to act. An open bond keeps a live obligation running; an early release gives up security before defects are signed off.

The performance bond expiration reminder tool reads an uploaded bond or the construction contract that references it and pulls out the validity period, the claim deadline, the release condition, and renewal obligations as suggested reminder dates.

Common mistakes with bonds

These are the failure modes behind the rules above. Each is a process gap rather than a legal subtlety.

• Treating the bond as the contractor's insurance. It is the obligee's security, funded by the contractor and repaid by the contractor.
• Letting the bonded amount fall behind the contract price. Change orders raise the exposure, and nothing corrects the bond unless somebody acts.
• Approving a significant modification without involving the surety. The consent step sits outside most change-order workflows, so it gets skipped.
• Assuming one state's rule travels. California and Florida differ on thresholds, on which bonds are required, and on whether the bond has to be recorded at all.
• Mixing up payment bond deadlines with performance bond deadlines. They come from different sources and run from different events.
• Filing the bond and never reading it. The named obligee, the trigger conditions, and the expiry all sit on the document, and all three decide whether the security is usable.
• Never checking the surety, and never releasing the bond. The federal certification list is public, and on private work nobody checks unless you do. At the other end, nobody owns the release, so bonds stay open long after the contract intended.

Bond management checklist

Capture when the bond is issued

1. Bond number, surety's legal name, and issue date, with the bond file attached to the record holding the contract it secures.
2. The legal entity named as obligee.
3. The penal sum, plus current contract value as a separate field.
4. The expiry basis in the bond's own words: fixed date, completion, or completion plus a warranty period.
5. The claim trigger and any notice or cure steps the bond requires.
6. The surety's Treasury listing and underwriting limitation, recorded beside the penal sum.
7. A named owner for the bond, and a backup.

Diarise

8. The bond expiry, plus an earlier reminder with lead time to extend or replace.
9. The claim deadline, set ahead of the expiry rather than on it.
10. The release condition, tied to completion and defects sign-off.
11. A recurring check of bonded amount against contract value after any variation.
12. Any replacement deadline on cash-equivalent security, at least 30 days out.

Review on a cadence

13. On every modification: does this need the surety's consent, and does the penal sum still match the work?
14. Quarterly, every open bond with its expiry, claim deadline, and bonded-to-value gap.
15. Annually, that each surety is still certified and still within its limitation.
16. At close-out, that the bond was released, the release was acknowledged in writing, and the record was closed.

Most of that work is record keeping that fails quietly. Contracko keeps bonds and the contracts they secure in one searchable repository with contract types, metadata, and file attachments. AI extraction pulls contract details such as parties, dates, terms, and obligations out of the documents instead of requiring re-typing, and custom fields you define hold what a bond needs tracked that a generic contract record does not: the penal sum, the named obligee, the surety, the release condition. Expiration reminders track deadlines like expirations, renewal dates, and end dates, and can be assigned to the colleague who has to act, while reporting gives one live view across the portfolio. There is a free trial, no credit card required.

Sources

[1] United States Code, Miller Act, 40 U.S.C. 3131 to 3134 (statutory bond requirement for federal construction, the payment bond pairing, waivers, and claim deadlines). govinfo.gov

[2] Federal Acquisition Regulation, FAC 2026-01, Part 28, Bonds and Insurance, with 1.109, 49.404, 52.249-10 and 31.205-4 (the operative $150,000 threshold, bond amounts, consent of surety, surety acceptance, takeover, and default). acquisition.gov

[3] Office of the Federal Register (the 2010 rule that raised the FAR threshold to $150,000 and the 2022 rule freezing it). federalregister.gov and federalregister.gov

[4] U.S. Department of the Treasury, 31 CFR Part 223 (certified sureties, the underwriting limitation, and the Circular 570 list). ecfr.gov

[5] U.S. Small Business Administration, 13 CFR Part 115 and the Surety Bond Guarantee program (indemnity and recovery rules, guarantee fee, and contract-size limits). ecfr.gov and sba.gov

[6] California Legislative Information (Public Contract Code 10221 and 10105, Civil Code 9550, and Insurance Code 105). leginfo.legislature.ca.gov

[7] Florida Legislature, 2025 Florida Statutes 255.05 (recorded bond, state and local exemptions, and alternative security). leg.state.fl.us

[8] U.S. General Services Administration, Standard Form 25, Performance Bond (rev. 10/2023). gsa.gov

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