Statutory retainage caps in construction limit how much of a contract price an owner or general contractor can hold back from progress payments. Five percent is the most common ceiling on public projects. On private work, the cap is usually five or ten percent, and some states use a tiered rule that starts at ten and drops to five once the job is half complete. A handful of states set no statutory cap on private projects at all, leaving the percentage to the contract.
Public Project Caps
State and local public works contracts almost universally cap retainage at five percent of the contract price. Some jurisdictions allow up to ten percent during early construction but require a reduction to five percent once the project reaches fifty percent completion. The reasoning is practical: the risk of abandonment or defective work is highest at the start, and a smaller reserve adequately protects the public entity once the job is half-finished.
These caps are rigid. Unlike private agreements, where parties can sometimes negotiate around default rules, government contracts must follow the statutory ceiling. When a public agency reduces its retainage mid-project, prompt-payment statutes in most states require the same reduction to flow through to every subcontractor on the job. A general contractor who withholds a higher percentage from its subcontractors than the public owner withholds from it is violating the law in the clear majority of states.
Federal Construction Contracts
Federal construction follows the Federal Acquisition Regulation rather than state law, and the framework works differently. Under FAR 52.232-5, a contracting officer who finds that progress is satisfactory must authorize payment in full with no retainage at all. Only when progress is unsatisfactory may the officer retain up to ten percent of progress payments, and even then the regulation discourages retainage as a substitute for active contract management.1Acquisition.GOV. FAR 52.232-5 Payments Under Fixed-Price Construction Contracts As the work nears substantial completion, the contracting officer must release withheld funds except what remains necessary to protect the government’s interest.2Acquisition.GOV. FAR 32.103 Progress Payments Under Construction Contracts
Payment to subcontractors is tightly regulated. Once a prime contractor receives payment from the government, it must pay its subcontractors within seven days.3Acquisition.GOV. FAR 52.232-27 Prompt Payment for Construction Contracts Final payments, including retained amounts, are due within thirty days of the agency’s acceptance of the completed work or receipt of a proper invoice, whichever is later.4Acquisition.GOV. FAR Subpart 32.9 Prompt Payment On federally assisted transit and transportation projects, the Federal Transit Administration authorizes agencies to terminate contracts, withhold progress payments, or disqualify contractors from future bids when retainage isn’t released on time.5Federal Transit Administration. Prompt Payment and Retainage Guidance
Private Project Caps
Private construction is where the real patchwork begins. Some states set a hard five percent cap. Others allow ten percent. A significant number use a tiered system mirroring the public model: ten percent until the job is half done, then five percent or nothing for the balance. Several states remain silent on private retainage entirely, leaving the parties to negotiate whatever percentage they want.
Where a statutory cap exists, it overrides any conflicting contract language. A contract calling for fifteen percent retainage in a state that caps it at ten will be enforced at ten, regardless of what both parties signed. Many state prompt-payment acts fold retainage into their broader payment-timing rules, requiring withheld funds to be released within a defined window after the project hits a completion milestone.
Residential Carve-Outs
A number of states exempt small residential projects from their retainage statutes. Exemptions typically cover single-family homes and sometimes extend to duplexes, triplexes, or buildings with up to four units. A few jurisdictions use a dollar threshold instead, exempting residential projects below a certain total cost. In those states, the statutory cap doesn’t apply, which means the retainage percentage is whatever the contract says. Homeowners and residential contractors often operate outside the retainage framework that governs commercial work, and subcontractors on those jobs have fewer statutory protections for withheld funds.
Flow-Down to Subcontractors
The most consistent rule across states is proportional flow-down: a general contractor cannot withhold a larger percentage from its subcontractors than the owner withholds from the general contractor. When the owner reduces retainage mid-project, that reduction must pass through the entire chain. The same principle applies at the end of a job. If the owner pays retainage attributable to a particular subcontractor’s work, the general contractor must forward that payment promptly. Penalties for violating flow-down rules are generally the same interest and fee penalties that apply to any late construction payment.
When Retainage Must Be Released
Retainage release is tied to project milestones defined by statute or contract. Most states use one of three triggers. Substantial completion is the most common, defined as the point when the owner can occupy or use the space for its intended purpose even if minor punch-list items remain. A certificate of occupancy issued by local building officials is the trigger in some jurisdictions. Others rely on the filing of a notice of completion, which formally documents the end of the project and starts the statutory clock for final payment.
Once the trigger event occurs, timelines vary. Thirty days is a common default, but deadlines run from thirty to ninety days depending on jurisdiction and project type. Some states allow the owner to withhold 150 percent of the estimated cost of unfinished punch-list work and release the rest. After the general contractor receives its retainage, a separate clock starts for payment to subcontractors, often seven to ten business days.
Why Lien Deadlines Can’t Wait for Retainage
Retainage is typically the last payment on a project and often doesn’t arrive until months after the work is done. Mechanic’s lien deadlines don’t wait. In every state, lien filing deadlines run from a completion event, not from the date of final payment. A subcontractor who assumes they can wait for retainage before deciding whether to file a lien may discover that the filing window has already closed.
Treat retainage and lien rights as completely independent timelines. If a retainage payment is overdue and there’s any question about whether it will be released, preserve lien rights immediately rather than relying on good faith or the statutory release deadline. Once a lien deadline passes, no amount of retainage legislation will restore it.
Alternatives to Cash Retainage
Many states let contractors avoid the cash flow hit by substituting alternative security. The most common option is a retainage bond, where a surety guarantees the contractor’s performance in exchange for a premium typically running one to three percent of the bonded amount annually. Public agencies in states that allow this approach are generally required to accept the bond from a qualified surety unless they can show a specific reason to refuse.
Some jurisdictions let contractors deposit government securities or certificates of deposit with the owner in place of cash. The deposited collateral must have a market value equal to or greater than the retainage amount it replaces, and interest earned on the deposited securities or escrow account typically belongs to the contractor who posted them. For subcontractors, the process usually involves asking the general contractor to submit a retainage bond to the owner for the subcontractor’s portion; the general contractor can withhold the subcontractor’s share of the bond premium from payments.
Escrow and Trust Fund Rules
A growing number of states require retainage to be deposited into an interest-bearing escrow account rather than commingled with the owner’s or general contractor’s operating funds. These escrow mandates often apply only above a contract-value threshold, and the interest earned is typically payable to the contractor when the retainage is released. On private projects, some states limit the escrow requirement to commercial and industrial work, excluding small residential construction.
In states with construction trust fund statutes, retainage held by a general contractor may be treated as trust funds that cannot legally be diverted to other projects or overhead. Misapplying those funds can trigger personal liability for the individuals who control the money, and in roughly a dozen states the consequences are criminal, ranging from misdemeanor charges to felony theft prosecutions.
Penalties for Exceeding the Cap or Paying Late
Withholding more than the statutory maximum or failing to release retainage on time carries real consequences. The most universal remedy is interest. States that specify a rate for late retainage payments commonly set it between one and two percent per month, and a few impose flat annual rates of eighteen percent. The interest accrues from the date payment was originally due.
Most state prompt-payment statutes also allow the prevailing party in a retainage dispute to recover attorney fees, which removes one of the biggest barriers to litigation for smaller subcontractors. Without fee-shifting, a $30,000 retainage claim might not justify the legal cost to pursue it. With it, the calculus changes, and withholding parties know it. Some states layer additional penalties on top of interest and fees, particularly when the withholding was knowing or willful. In states with construction trust fund acts, a contractor who diverts retainage belonging to subcontractors faces civil liability and potential criminal prosecution, with charges that can reach felony level depending on the amount involved and the intent behind the diversion.