Progress payments are partial payments a contractor receives throughout a long-term project, sized to the work actually completed rather than paid as a lump sum at the end. They keep cash moving so the contractor can cover labor, materials, and equipment as costs come due, while the owner only pays for value already delivered. The arrangement is standard on commercial construction, public infrastructure, and federal defense contracts, and the mechanics are similar across all three: the contractor submits a periodic application showing what has been built or spent, someone verifies it, and a check follows within a defined window.
How Each Payment Amount Is Calculated
Most contracts use the percentage-of-completion method. You compare costs incurred so far against total estimated project costs to get a completion percentage, then bill that percentage of the contract price. A contractor who has spent $400,000 on a project estimated to cost $1,000,000 is 40 percent complete and can bill for 40 percent of the contract value. Some contracts measure physical completion instead, with an inspector confirming that a defined portion of the structure is in place regardless of what has been spent.
Federal contracts work from a different formula. Federal Acquisition Regulation 52.232-16 caps progress payments at 80 percent of costs incurred for large businesses.1eCFR. 48 CFR 52.232-16 – Progress Payments Small businesses receive 85 percent to accommodate tighter operating margins. The rates let a contractor buy long-lead items without the government fronting the full cost. As finished items are delivered, the government recovers its earlier payments by subtracting a liquidation amount from each delivery payment, usually at the same percentage.2eCFR. 48 CFR 32.503-8 – Liquidation Rates, Ordinary Method
A third approach skips ongoing cost tracking and ties payments to specific deliverables. One payment releases when the foundation is poured, another when the structure is enclosed, another when mechanical systems pass inspection. Milestone billing suits projects that break naturally into discrete phases, and both sides avoid the overhead of detailed cost accounting.
What a Contractor Submits to Get Paid
Schedule of Values
Every payment application starts from the schedule of values, a document that divides the total contract sum across line items like sitework, framing, electrical, and finishes. The owner approves the breakdown before the first application goes out, and every subsequent request pulls from it. Change orders that alter the contract price require updates to the schedule; failing to incorporate them creates discrepancies that stall payments and feed disputes.
AIA G702 and G703
On private and commercial projects, most contractors use the AIA G702 Application and Certificate for Payment with its G703 Continuation Sheet.3AIA Contract Documents. G702S-2017 Application and Certificate for Payment The G702 summarizes the total contract price, cumulative work completed, retainage withheld, and the net amount due. The G703 breaks each schedule-of-values line into columns showing previous billings, work completed this period, materials stored, and the balance remaining. Math errors or missing items get the application returned, which is why experienced contractors treat the G703 as the document that makes or breaks each billing cycle.
Billing for Stored Materials
Contractors often need to bill for materials bought and delivered but not yet installed. Most contracts allow this for materials stored on the project site and sometimes for materials in an approved off-site warehouse. Getting paid typically requires purchase invoices proving the materials were bought, delivery receipts confirming arrival, and photographs showing quantity and condition. Off-site storage adds requirements: a storage agreement, insurance covering the materials while stored, and sometimes a site visit before funds release.
Lien Waivers
Most contracts require a conditional lien waiver with each payment application, releasing the contractor’s claim rights for that payment once the check actually clears the bank. Final payment carries an unconditional waiver covering the full contract. About a dozen states require specific statutory forms for these waivers; the rest leave the format to the parties. Using the wrong form in a state that mandates a statutory version can void the waiver, so this is worth checking before the first billing cycle.
How Long Payment Takes and What Happens If It’s Disputed
After submission, the architect or owner’s representative verifies that the claimed work matches what is actually in place, then certifies the application. On federal contracts, approved payments usually arrive within 7 to 30 days of submission to the contracting officer.4Defense Acquisition University. Progress Payments Private project timelines depend on the contract, but 30 days from submission is a common target.
The federal Prompt Payment Act requires agencies to pay proper invoices within 30 days or owe interest.5Office of the Law Revision Counsel. 31 USC 3903 – Regulations The Treasury Department resets the rate every six months and publishes it; recent rates have run in the low single digits per annum.6U.S. Department of the Treasury. Interest Rates – Prompt Payment Most states have their own prompt payment statutes for private projects, with deadlines typically running 14 to 35 days after an approved invoice and interest penalties often reaching 1 to 1.5 percent per month.
An owner who disputes part of an application can withhold the disputed portion, but contracts usually require written notice explaining what is being withheld and why. The undisputed portion should still be paid on schedule. A contractor who receives a notice of withholding needs to follow every notice provision in the contract exactly, because courts have treated these notices as constructive rejections that start limitation clocks running. Waiting for informal resolution while contractual deadlines expire is where most contractors get burned.
Retainage
Retainage is money the owner holds back from each progress payment as security that the contractor will finish the job. The typical rate is 5 to 10 percent of each billing period’s earned amount. On a $100,000 progress payment with 10 percent retainage, the contractor receives $90,000 and the remaining $10,000 goes into the retainage pool. That money accumulates across the life of the project and can represent a meaningful share of the contractor’s profit. It stays with the owner until the project reaches substantial completion, meaning the structure is ready for its intended use.
Many contracts allow the withholding rate to drop once the project hits a milestone, often 50 percent completion. Some agreements release half of the accumulated retainage at that point; others simply cut the ongoing withholding rate from 10 percent to 5 percent. Final release usually requires unconditional lien waivers, proof of final inspections, and resolution of punch-list items. Clear contract language defining substantial completion prevents the owner from sitting on retainage indefinitely over minor defects.
Overbilling and Underbilling
On any project using percentage-of-completion, the amount billed rarely matches the amount actually earned at any moment. The gap creates either an overbilled or underbilled position, and tracking it matters for both cash management and financial reporting.
The calculation is simple: subtract earned revenue from billed revenue. If a contractor on a $1,000,000 project has incurred $320,000 of an estimated $800,000 in total costs, the project is 40 percent complete and earned revenue is $400,000. If $450,000 has been billed, the contractor is overbilled by $50,000. Flip the numbers and the contractor is underbilled.
Overbilling gives a temporary cash advantage but creates a balance sheet liability for revenue not yet earned. Underbilling is more dangerous: it means the contractor is financing the owner’s project out of pocket. Persistent underbilling across multiple jobs can quietly drain working capital even while the company looks profitable on paper. Project managers usually track these positions monthly through work-in-progress reports and adjust billing strategies before the gap grows too large.
Subcontractor Payment Protections
Subcontractors face a distinct risk because they have no direct contract with the owner. Their cash flow depends on the prime contractor passing money down. When the prime delays, or when the owner stops paying the prime altogether, subcontractors are left covering payroll and materials from their own accounts.
Pay-When-Paid vs. Pay-If-Paid
Two clauses control this risk and the difference between them is significant. A pay-when-paid clause is treated as a timing mechanism: the subcontractor is paid once the prime is paid, but the prime’s obligation to pay eventually still exists. A pay-if-paid clause makes the owner’s payment to the prime a condition precedent to any obligation to the subcontractor. If the owner never pays, the subcontractor has no claim against the prime. Many states refuse to enforce pay-if-paid clauses on public policy grounds, but enforceability varies widely by jurisdiction.
Miller Act Bonds on Federal Projects
On federal construction contracts over $100,000, the Miller Act requires the prime contractor to furnish a payment bond protecting subcontractors and material suppliers. First-tier subcontractors who have not been paid in full within 90 days after their last work can sue on that bond without giving prior notice to the prime. The suit must be filed no later than one year after the last labor or materials were provided. Second-tier subcontractors and suppliers have the same right but must give written notice to the prime within 90 days of their last work before suing.7U.S. General Services Administration. The Miller Act These suits must be brought in the U.S. District Court for the district where the contract was performed.
Joint Check Agreements
A joint check agreement reduces risk lower in the chain. The prime issues checks payable to both the subcontractor and the subcontractor’s supplier, so both parties must endorse before anyone can cash. This protects the prime from paying twice for the same materials and helps the supplier avoid work stoppages and lien claims. A written three-party agreement spelling out endorsement rights and the effect of joint payments prevents factual disputes later.
How Progress Payments Are Taxed
Federal tax law generally requires the percentage-of-completion method for any long-term contract, so the contractor recognizes taxable income proportional to the work completed each year rather than waiting until the project is finished.8Office of the Law Revision Counsel. 26 USC 460 – Special Rules for Long-Term Contracts
Smaller contractors get flexibility. A construction business whose average annual gross receipts over the prior three years do not exceed $32,000,000 for 2026 can use the completed-contract method for contracts expected to finish within two years, deferring income recognition until the project wraps up. The threshold adjusts annually for inflation.
A look-back rule applies when actual costs or price at completion differ from the estimates used during the project. If the contractor underestimated price or overestimated costs, the IRS charges interest on the tax effectively deferred; if costs came in higher than expected, the contractor receives interest for having overpaid.9eCFR. 26 CFR 1.460-6 – Look-Back Method A de minimis exception skips the look-back for contracts completed within two years where the gross contract price is $1,000,000 or less, or less than 1 percent of the contractor’s average annual gross receipts over the prior three tax years.
Consequences of Overstating Completed Work
Inflating the amount of work completed on a payment application to pull cash faster is one of the oldest problems in construction. On private projects it can trigger breach-of-contract claims and termination. On federal projects the stakes climb sharply. Knowingly misrepresenting completed work to the government triggers civil liability under the False Claims Act, which carries penalties of $14,308 to $28,619 per false claim as of mid-2025, plus up to three times the government’s actual damages.10Federal Register. Civil Monetary Penalties Inflation Adjustments for 2025 Private citizens who discover the fraud can sue on behalf of the government and keep a share of the recovery, so the risk is not limited to government auditors.