A payment bond guarantees that workers and material suppliers on a construction project will be paid, even if the contractor runs out of money or disappears

A payment bond is a written promise from a bonding company that says: if the contractor fails to pay workers, subcontractors, or suppliers, the bonding company will pay them instead. The contractor buys the bond before work starts. The bond protects everyone below the contractor in the payment chain — the people actually doing the work and providing materials — not the project owner.

Payment bonds exist because construction projects are long, involve many parties, and money often flows in stages. A contractor might collect payment from the owner but never pass it down to the electrician or the lumber supplier. Without a bond, those workers and suppliers have limited ways to recover what they're owed. A payment bond creates a legal obligation that someone — the bonding company — will step in and pay.

Key Takeaways

  • A payment bond is a promise from a bonding company to pay workers and suppliers if the contractor does not, and it protects people below the contractor in the payment chain.
  • Payment bonds are required by law on most public construction projects (federal, state, and local government work) but are optional on private projects.
  • The contractor pays a premium to the bonding company, usually 1 to 3 percent of the contract value, to obtain the bond.
  • A claimant must follow specific notice and filing procedures — including sending written notice to the bonding company within a set timeframe — to recover unpaid amounts through the bond.
  • Payment bonds cover unpaid wages, materials, and equipment but do not cover the project owner's losses or disputes over work quality.

When payment bonds are required

Federal projects require payment bonds on all contracts over $35,000 under the Miller Act. State and local government projects have their own thresholds, which vary — some states require bonds on projects over $50,000, others over $100,000 or more. Private projects (residential, commercial, industrial work paid for by a business or individual) do not legally require payment bonds, though some owners demand them anyway as a condition of the contract.

Even when a bond is not legally required, a contractor may still obtain one voluntarily. Some general contractors buy payment bonds to reassure subcontractors and suppliers that they will be paid, which can help the contractor win bids or negotiate better terms with vendors.

How payment bonds work in practice

The contractor contacts a bonding company and applies for a payment bond. The bonding company reviews the contractor's financial history, credit, and the project details. If approved, the contractor pays a premium — typically 1 to 3 percent of the total contract value — and receives the bond. The bonding company then becomes liable for unpaid claims up to the bond amount.

When a worker or supplier does not receive payment, they do not automatically get paid by the bond. They must take action: send written notice to the bonding company (and sometimes to the contractor and project owner) within a important date set by state law or the bond terms. important date vary but often range from 30 to 90 days after the last work or delivery. The claimant then files a formal claim with the bonding company, providing evidence of the unpaid amount — invoices, delivery receipts, timesheets, or contracts.

The bonding company investigates the claim. If it is valid, the bonding company pays the claimant directly. If the bonding company denies the claim, the claimant can sue the bonding company in court, though the burden of proof falls on the claimant to show the debt is real and the notice was given correctly.

What payment bonds cover and do not cover

Payment bonds cover unpaid wages for workers, unpaid invoices for subcontractors, and unpaid bills for material suppliers and equipment rentals. They cover work performed and materials delivered under the contract, up to the bond amount.

Payment bonds do not cover disputes over the quality of work, change orders that were never agreed to, or losses suffered by the project owner. They also do not cover claims from the contractor itself — only claims from workers, subcontractors, and suppliers. If a general contractor claims the owner owes them money, the payment bond does not help; that is a separate contract dispute.

The bond amount and limits

The bond amount is usually equal to the full contract price — the total dollar value of the construction project. On a $500,000 project, the payment bond would typically be for $500,000. This means the bonding company's liability is capped at that amount. If unpaid claims exceed the bond amount, claimants share whatever is available, and the bonding company is not responsible for the shortfall.

Some bonds are written for a percentage of the contract price rather than the full amount, though this is less common and usually only happens on large projects where the parties negotiate custom terms.

Differences between payment bonds and performance bonds

A performance bond is a separate bond that protects the project owner if the contractor fails to complete the work or does it poorly. A payment bond protects workers and suppliers if the contractor fails to pay them. On public projects, both are usually required. On private projects, the owner might require a performance bond but not a payment bond.

The same bonding company often issues both bonds for the same project, and the contractor pays a premium for each one. The two bonds serve different purposes and protect different parties, so they cannot be used interchangeably.

What to do if you are not paid and a bond exists

First, confirm that a payment bond exists. Ask the contractor, the project owner, or the general contractor for a copy of the bond. The bond document will list the bonding company's name, the bond amount, and the notice important date.

Send written notice to the bonding company as soon as you realize you will not be paid. Do not wait until the important date — send it early. Include your name, the amount owed, the dates of work or delivery, and a brief description of what you provided. Send the notice by certified mail or another method that creates a record of delivery. Keep a copy for yourself.

Gather your evidence: invoices, delivery tickets, timesheets, photographs of materials delivered, or a signed contract. File a formal claim with the bonding company within the important date. The bonding company will tell you what forms to use and where to send them. If the bonding company denies your claim, you can consult an attorney about suing the bonding company, though you will need to prove the debt and that you followed the notice rules correctly.

Frequently Asked Questions

Can I get paid from a payment bond if the contractor is still working on the project?

Yes. You do not have to wait for the project to finish. If you have not been paid for work or materials you provided, you can send notice and file a claim when ready. The bond protects you whether the project is ongoing or complete.

What happens if the bonding company goes out of business?

Bonding companies are regulated by state insurance departments and must maintain reserves to cover claims. If a bonding company fails, state law usually provides a guaranty fund that pays valid claims up to a limit. Contact your state's insurance commissioner's office for details about your state's fund.

Do I need a lawyer to file a payment bond claim?

You can file a claim yourself if you follow the notice and filing procedures correctly. However, if the bonding company denies your claim or the amount is large, consulting an attorney can help you understand your options and whether a lawsuit is worth pursuing.

Can a payment bond be used to cover a dispute over change orders?

No. A payment bond covers work and materials under the original contract. If you performed work that was not in the contract and the contractor did not agree to pay for it, the bond does not cover that dispute. You would need to pursue a separate claim against the contractor.

Is a payment bond the same as a lien?

No. A lien is a legal claim against the property itself, filed through the court system. A payment bond is a promise from a bonding company. Both can help you recover unpaid amounts, but they work differently and have different important date and procedures.