Retainage in construction is a portion of each progress payment — typically 5% to 10% — that the owner or general contractor holds back until the project is finished. The withheld money gives the paying party financial leverage to make sure the work gets completed according to the plans and specifications. If the contractor walks away or leaves defects, the owner already has money in hand to cover the fix. Retainage operates at every level of the payment chain: the owner withholds from the general contractor, and the general contractor withholds the same way from subcontractors.
Sometimes called retention, it is one of the most common sources of cash flow strain in the construction industry. A subcontractor can finish quality work on time and still wait a year or more to collect the last slice of what was earned.
How Much Gets Withheld
The retainage percentage is spelled out in the contract, usually as a flat rate applied to each progress payment. If the contract calls for 10% retainage and a subcontractor submits a $200,000 invoice for work completed that month, the sub receives $180,000 and the remaining $20,000 goes into retention.
Many contracts, and a growing number of state laws, require that percentage to drop once the project hits a milestone. A common structure reduces retainage from 10% to 5% after the project reaches 50% completion. This approach, sometimes called retainage tapering, reflects the fact that the risk of non-performance decreases as the project nears the finish line. Some contracts also exempt stored materials and equipment from retainage, applying the holdback only to installed labor.
When Retainage Gets Released
Release happens in stages tied to project milestones, not all at once on the last day. The first major trigger is substantial completion — the point at which the project can be occupied or used for its intended purpose even though minor items remain unfinished. Most contracts and many state statutes require the bulk of retainage to be released at this stage.
A common contract provision, used in widely adopted standard forms, allows the owner to hold back 150% of the estimated cost to complete remaining punch list items and requires release of everything else. So if the punch list work is valued at $40,000, the owner can retain $60,000 and must release the rest of the accumulated retainage pool. The 150% cushion covers any overrun on the repair estimate.
Final release happens after the contractor finishes the punch list, passes a final inspection, and delivers the required closeout documents. Those typically include lien waivers from subcontractors and major suppliers, warranty documentation, as-built drawings, and operations manuals. The timeline for final payment after acceptance is generally set by contract or statute at 30 to 45 days.
The Subcontractor Timing Problem
Here is where retainage becomes genuinely unfair for trade contractors. A foundation subcontractor might finish work in month two of a two-year project. Under most contracts, that sub’s retainage stays locked up until the general contractor achieves substantial completion of the entire project, not just the foundation work. The sub has no control over whether the drywall crew or the elevator installer stays on schedule.
Some contracts include provisions for early or line-item release, which allows a subcontractor’s retainage to come loose once that scope of work is completed and accepted. But this is a negotiated term, not a default, and many general contractors resist it because their own retainage from the owner remains tied to overall project completion. If the contract ties retainage release to full contract performance, courts have enforced that language even when the sub’s work was finished months earlier.
State Laws That Cap and Regulate Retainage
Every state has some form of prompt payment legislation that touches retainage, though the specifics vary widely. The trend over the past decade has been toward tighter limits. A growing number of states now cap retainage at 5% for both public and private projects, with some going further. New Mexico, for instance, has effectively prohibited retainage on most construction contracts. Other states still allow 10% but mandate a reduction to 5% once the project is half finished.
Beyond capping the percentage, state prompt payment acts typically impose three additional requirements:
- Interest penalties for late release. When the retaining party fails to release funds within the statutory deadline after completion, most states impose interest at rates that significantly exceed normal commercial rates, discouraging owners and general contractors from sitting on retainage.
- Escrow or trust account requirements. A number of states require retained funds to sit in interest-bearing escrow rather than commingled with the retaining party’s operating funds. Without segregation, retainage can become just another unsecured claim if the owner goes bankrupt.
- Right to substitute securities. Several states allow contractors to post a letter of credit, surety bond, or U.S. Treasury securities in place of cash retainage. This frees up working capital while giving the owner equivalent financial protection.
Some state statutes also grant contractors the right to stop work if retainage is wrongfully withheld after proper written notice. These protections generally cannot be waived by contract, which prevents owners from drafting around the statute.
Federal Projects Follow Different Rules
Federal construction contracts operate under the Federal Acquisition Regulation, not state prompt payment laws. Under FAR 32.103, the maximum retainage on a federal construction contract is 10% of each approved progress payment, but the contracting officer is not required to withhold anything at all. If the contractor is making satisfactory progress, the regulation directs that payment be made in full.
When retainage is withheld, the contracting officer must adjust it downward as the project approaches completion, taking into account the contractor’s track record and alternative safeguards like performance bonds. On completion and acceptance of each separately priced portion of the contract, payment must be made without any retainage withheld.
Retainage Does Not Extend Your Lien Deadline
This is the most expensive mistake in construction payment disputes: assuming that because retainage isn’t due yet, the deadline to file a mechanics lien hasn’t started running. It has.
In most states, the clock for filing a mechanics lien starts when you last furnished labor or materials to the project, not when payment becomes due. A subcontractor who finishes work in March but isn’t owed retainage until November may discover that the lien deadline expired over the summer. At that point, the strongest collection tool is gone, and the only option left is a breach of contract claim against the general contractor, which is a far weaker position.
If retainage is the only amount outstanding and you have any reason to doubt you’ll be paid, file your mechanics lien within the applicable deadline. You can include the retainage amount in the lien claim even though it isn’t technically due yet. Letting the deadline pass because “the retainage will come eventually” is a gamble that goes wrong constantly.
What Happens If the Owner Goes Bankrupt
Retainage that hasn’t been segregated into a separate account becomes part of the owner’s general assets in a bankruptcy case. The contractor who earned that money stands in line with every other unsecured creditor and typically recovers pennies on the dollar, if anything.
More than 30 states have enacted construction trust fund statutes to address this. These laws automatically create a trust over construction funds received by an owner or general contractor, including retainage. Because trust assets are not property of the debtor’s estate, a contractor who can trace retainage to a segregated trust fund can claim it ahead of the owner’s other creditors and ahead of lenders with security interests in the owner’s accounts. The practical challenge is tracing. If the retaining party commingled trust funds with operating money, proving which dollars belong to the trust becomes difficult and expensive.
This is one of the strongest arguments for insisting on escrow provisions in the contract regardless of whether the state requires them. A clearly segregated retainage account leaves a clean paper trail that survives bankruptcy.
Cash Flow, Bonding, and Taxes
The financial strain of retainage is disproportionate to the percentage withheld. On a $5 million subcontract with 10% retainage, the sub has $500,000 tied up — money that has been earned, booked as revenue, and potentially taxed, but not collected. That capital gap gets bridged with lines of credit, thinner margins, or slower payments to the sub’s own suppliers.
Retainage also affects bonding capacity. Surety companies evaluate working capital when setting bonding limits, and retainage receivable is treated as lower-quality working capital because collection is both delayed and contingent. A contractor with heavy retainage concentrated on a few large projects may find its bonding capacity reduced, which limits the ability to bid new work. The more projects a contractor takes on, the more retainage accumulates, and the harder it becomes to qualify for bonding on additional contracts.
Taxes complicate the picture further. For accrual-method contractors on contracts that are not classified as long-term contracts under the tax code, IRS Revenue Ruling 69-314 provides that retainage does not need to be included in taxable income until the project receives final acceptance, because the right to the retainage isn’t fixed until that point. For long-term contracts under 26 U.S.C. § 460, most contractors must use the percentage-of-completion method, which includes retainage in the total contract price and taxes it proportionally as work progresses, even though the cash hasn’t come in. A contractor who defers retainage receivable under Rev. Rul. 69-314 must also defer the corresponding retainage payable to subcontractors.
Managing retainage exposure means tracking it separately from standard receivables, forecasting collection dates tied to project milestones, and pricing the cash gap into bids. Contractors who treat retainage as a minor accounting entry rather than a liquidity risk tend to find out the hard way when their line of credit runs dry mid-project.