A payment bond is a three-party guarantee, purchased by a general contractor from a surety company, that the subcontractors, suppliers, and laborers on a construction project will be paid for their work even if the contractor defaults. On federal construction contracts worth more than $100,000, one is required by law.1Office of the Law Revision Counsel. 40 USC 3131 – Bonds of Contractors of Public Buildings or Works Because a subcontractor can’t file a mechanic’s lien against a courthouse or a highway, the bond takes the place of the lien as the financial safety net for anyone who worked or supplied materials down the chain.
How a Payment Bond Works
The bond is a contract. The surety promises to cover the debts the general contractor owes to workers and suppliers if the contractor fails to pay them. It doesn’t replace the contractor’s obligation. It backstops it. If everyone on the project gets paid on time, the bond is never triggered and expires with the project.
Under federal law, the bond amount must equal the total contract price unless the contracting officer makes a written finding that a bond that large is impractical. Even in that case, the payment bond can’t be smaller than the performance bond on the same project.1Office of the Law Revision Counsel. 40 USC 3131 – Bonds of Contractors of Public Buildings or Works On state and private jobs, the required amount varies but usually tracks the full contract value.
The Parties Involved
Every payment bond has four sides to it:
- The principal is the general contractor whose payment obligations the bond guarantees. The principal applies for the bond, pays the premium, and remains on the hook for every dollar the surety ends up paying out.
- The obligee is the project owner or government agency that requires the bond as a condition of awarding the contract.
- The surety is the insurance or bonding company that issues the bond and stands behind the financial guarantee. If the principal defaults, the surety investigates claims and pays the valid ones.
- The claimants are the subcontractors, suppliers, and laborers the bond protects. When the general contractor doesn’t pay them, they file against the surety rather than chasing the contractor directly.
One detail catches contractors off guard. Before issuing a bond, the surety typically requires the contractor’s owners and key officers to personally sign a general agreement of indemnity. That agreement lets the surety come back to the contractor and its individual signers for every dollar it pays out on a claim, plus legal fees and investigation costs. A payment bond is not free money. If the surety pays, the contractor owes it all back.
Why Public Projects Require Them
On a private job, a subcontractor who doesn’t get paid can file a mechanic’s lien against the property. That gives them leverage because the owner can’t sell or refinance with a lien clouding title. Public property doesn’t work that way. You can’t lien a federal building or a state road. The payment bond fills the gap.
The federal rule is the Miller Act, which requires a payment bond on every contract over $100,000 for the construction, alteration, or repair of a federal building or public work.1Office of the Law Revision Counsel. 40 USC 3131 – Bonds of Contractors of Public Buildings or Works Every state has its own version, usually called a Little Miller Act, that applies the same idea to state and local contracts. The dollar threshold varies by state.
Payment Bonds on Private Projects
Payment bonds aren’t limited to public work. Owners on large private projects sometimes require them, mainly to keep the property free of mechanic’s liens during construction. Where a proper payment bond is in place, subcontractors and suppliers look to the surety instead of filing against the land. The specifics depend on state law. These bonds are most common on commercial developments and rare on residential or smaller jobs, where the premium isn’t worth it.
Who Can File a Claim
Not everyone who works on a bonded project has bond rights. Under the Miller Act, two tiers of claimants are covered:2Office of the Law Revision Counsel. 40 USC 3133 – Rights of Persons Furnishing Labor or Material
- First-tier claimants have a direct contract with the bonded general contractor. Their path to recovery is the most straightforward.
- Second-tier claimants have a contract with a first-tier subcontractor. They’re covered too, but they face extra notice requirements.
Third-tier claimants, those who contract with a second-tier sub, generally have no rights under a federal Miller Act payment bond. This is where claims fall apart more often than people expect. A supplier selling to a sub-subcontractor may have no bond protection at all on a federal project, no matter how much it’s owed. State Little Miller Acts can define the covered tiers differently, so the cutoff can shift depending on whose rules apply.
How to File a Claim
A payment bond claim lives or dies on deadlines. Miss one, and the claim is gone regardless of how legitimate the underlying debt is.
Notice
Under the Miller Act, first-tier subcontractors and suppliers don’t have to send any preliminary notice before pursuing a claim.3U.S. General Services Administration. The Miller Act Second-tier claimants do. They must send written notice to the general contractor within 90 days of the date they last furnished labor or materials.2Office of the Law Revision Counsel. 40 USC 3133 – Rights of Persons Furnishing Labor or Material The notice must state the amount claimed and identify the party to whom the labor or materials were furnished. Missing the 90-day window kills the second-tier claim entirely.
Delivery has to be by a method that produces third-party verification, or served the way a U.S. marshal would serve a summons in that district. Certified mail with return receipt requested is the usual approach. State projects have their own notice rules, and many states impose preliminary notice requirements on first-tier claimants that the federal act doesn’t.
The Waiting Period and the One-Year Deadline
A claimant who hasn’t been paid in full within 90 days of finishing their work can sue on the bond. That gap gives the parties time to work things out. But the window doesn’t stay open forever. Suit must be filed no later than one year after the claimant last performed labor or supplied materials.2Office of the Law Revision Counsel. 40 USC 3133 – Rights of Persons Furnishing Labor or Material A suit filed a day late is barred.
The case is filed in the U.S. District Court for the district where the contract was performed.3U.S. General Services Administration. The Miller Act Both the principal and the surety are typically named as defendants.
Documentation
Be ready to hand over the original subcontract or purchase order, all change orders, detailed invoices showing the outstanding balance, proof of delivery for materials, and payroll records substantiating labor costs. The surety investigates every claim it receives, checking the documents against the bond’s terms before authorizing payment. Sloppy records give the surety a reason to delay or deny, so getting the paperwork right up front matters.
What the Bond Doesn’t Cover
Payment bonds don’t cover every cost a subcontractor might absorb. They protect people who furnished labor or materials that were consumed on the project. Equipment that moves from one job to the next, like generators, scaffolding, or heavy machinery that wasn’t permanently incorporated into the work, is generally excluded. The test is whether the item was reasonably expected to be used up on this job. If you can drive it or carry it to the next project, the surety probably won’t reimburse you for it.
The Miller Act itself is silent on attorney fees and prejudgment interest. Whether a claimant can recover those depends on the subcontract and applicable state law. A subcontract with an attorney fee provision may support recovery, but the bond alone doesn’t create that right. Lost profits and other consequential damages are typically outside the scope. The bond covers what you’re owed for the work you did, not the profit you would have earned on future jobs.
What a Payment Bond Costs
The general contractor, not the owner, pays the premium. Premiums generally run between 0.5% and 3% of the contract value for contractors with solid financials and a track record of finishing projects on budget. Contractors with limited experience or weaker credit can see premiums up to 5%. On many jobs, the payment bond and performance bond are priced together as a package.
Getting bonded isn’t only about paying the premium. Sureties underwrite contractors the way a bank underwrites a loan. They want audited financials, work-in-progress schedules, a history of completed projects, evidence of adequate equipment and personnel, and personal financial statements from significant owners. Contractors who can’t show financial stability and operational capacity will struggle to get bonded at all, which can shut them out of public work entirely.
Payment Bonds vs. Performance Bonds
Payment bonds and performance bonds are often required on the same project, which leads to confusion. They protect different people against different risks. The payment bond protects subcontractors, suppliers, and laborers from non-payment. The performance bond protects the project owner from the contractor’s failure to finish the work according to the contract.
If the general contractor walks off the job or can’t meet specifications, the performance bond responds. The surety may finance the original contractor to finish, hire a replacement, or pay the owner the cost to complete, up to the bond’s face value. The payment bond never comes into play over completion. It only responds when someone who contributed labor or materials didn’t get paid. One bond faces the owner; the other faces everyone downstream.