What is retainage in construction? How it works, when you get paid, and the cash-flow gap it creates

Retainage is a percentage — typically 5% to 10% — of each progress payment that a project owner or general contractor withholds from a contractor or subcontractor until the work is substantially or fully complete. It's not a penalty and it's not optional; it's written into most construction contracts as a way to make sure the job gets finished correctly before the last dollar changes hands. The catch: that withheld money is real money you already earned, and it can sit unpaid for months.

If you run a construction business, you've felt this. You bill for the work, the invoice gets approved, and then 90% (or 95%) of it hits your account — while the rest sits in someone else's ledger until the whole project closes out. Multiply that across every draw on every job, and retainage stops being a line item and starts being a cash-flow strategy problem.

Why owners and GCs withhold retainage in the first place

Retainage exists to protect the party paying for the work. An owner (or the GC managing the project on the owner's behalf) wants leverage to make sure a contractor finishes the punch list, fixes deficiencies, and doesn't walk off the job once most of the money is paid.

Think of it as security held against unfinished work, not a judgment on your quality or reliability. Even top-performing contractors get retainage held — it's baked into standard contract templates before anyone signs, regardless of track record.

The logic from the owner's side:

• Completion assurance — if a contractor stops mid-project, the withheld funds help cover finishing costs.
• Quality leverage — punch-list items get fixed faster when payment is tied to sign-off.
• Lien and claim protection — retainage gives the owner a cushion if subcontractor or supplier claims surface late.
• Standard risk allocation — lenders financing the project often require it as a condition of the construction loan.

How much retainage gets withheld, and when it changes

The most common structure is 10% retainage held on each progress payment through the first half of the project, stepping down to 5% once the job reaches roughly 50% completion — sometimes it stays flat at 5% or 10% the whole way through instead. The exact split is a contract term, not a legal default, so it varies by owner, project type, and region.

Public projects (government-funded work) and private commercial projects both use retainage, but the norms differ somewhat:

• Public projects often have more standardized retainage terms and, in many states, statutory limits or step-down requirements written into public contracting law.
• Private projects are governed purely by whatever the contract says — an owner and GC can negotiate almost any retainage percentage and release schedule they agree to.

State laws on this vary a lot, and many states cap retainage percentages or set release timelines for at least some project types — but the specifics differ by state and by whether the project is public or private. Don't assume your state's rules match another state's; check your contract and your state's current commercial construction statutes (or ask your attorney) before you rely on a specific number.

How retainage flows from owner to GC to sub

Retainage moves down the payment chain the same way progress payments do — it just moves in reverse when it's released.

1. The owner withholds retainage from payments to the general contractor.
2. The GC, in turn, withholds a matching (or sometimes higher) percentage from each subcontractor's invoice.
3. Retainage is typically released to the GC only after the owner accepts the project as substantially complete — and the GC then releases sub-tier retainage on a similar timeline.

That means subcontractors often wait even longer than the GC does, since GC-to-sub retainage release can lag behind owner-to-GC release by weeks. If you're a sub several tiers down, you're the last to get paid and often the most cash-constrained. This is one reason a solid construction line of credit or another flexible capital source matters more the further down the subcontractor chain you sit.

How retainage gets billed: AIA G702/G703 basics

Most commercial projects use the AIA G702 (Application and Certificate for Payment) and G703 (Continuation Sheet) forms, or a close variant, to document each progress billing. At a high level:

• The G703 breaks the contract into line items (schedule of values) and shows work completed to date on each.
• Retainage is calculated as a percentage of the completed-work value on each line and subtracted from what's due.
• The G702 summarizes the whole application: total earned, less retainage, less previous payments, equals the amount currently due.

You don't need to be an accountant to read these forms, but you do need to check the retainage line on every single pay application — it's easy for a GC's back office to apply the wrong percentage, and errors compound over a multi-month project. Clean, accurate billing here is also what protects your leverage later when you're chasing release. For a broader look at keeping billing and cash flow aligned across a project, see our guide to construction cash-flow management.

Retainage in your books: what "retainage receivable" means

On your balance sheet, retainage withheld from you is typically tracked as retainage receivable — a separate asset account from your regular accounts receivable, because it isn't due for payment yet under the contract terms. It's real, it's earned, it's yours — but it isn't collectible until the contract's release conditions are met.

That distinction matters for two reasons. First, if you're using percentage-of-completion accounting, retainage receivable still counts as recognized revenue even though the cash hasn't arrived — which can make your income statement look stronger than your bank balance. Second, lenders and bonding companies look at your retainage receivable balance when evaluating your working-capital position, since a large uncollected balance is a real (if temporary) drain on liquidity.

When retainage actually gets released

Retainage is generally released in two stages, though the exact mechanics depend on your contract:

• Substantial completion — the point where the project (or a defined portion of it) is usable for its intended purpose, even if minor punch-list items remain. Many contracts release the bulk of retainage here, sometimes holding back a smaller amount tied specifically to the punch list.
• Final completion / final acceptance — once punch-list items are resolved, final inspections pass, and closeout documentation (warranties, as-builts, lien waivers) is submitted, the remaining retainage is released.

In practice, "substantial completion" is often a negotiated moment, not an automatic trigger — architects, owners, and GCs sometimes disagree on whether it's been reached, and that disagreement is exactly what stretches retainage release from weeks into months. If you want to compare retainage timing against other financing options built for contractors while you wait, see loans for contractors.

How to get retainage released faster

You can't eliminate retainage, but you can shrink the delay:

• Keep documentation airtight. Submit complete, accurate pay applications and closeout packages the first time — incomplete paperwork is the single most common reason release gets delayed.
• Close the punch list fast and in writing. Get sign-off documented for each item as it's completed, not batched at the end.
• Know your lien and notice rights. Most states give contractors and subs lien rights (and preliminary notice requirements) that create real leverage if payment — including retainage — is wrongfully withheld past the contractual or statutory deadline. Understand your state's notice deadlines before you need them.
• Negotiate retainage terms up front. On new contracts, ask about a reduced percentage after 50% completion, or an escrow arrangement, rather than accepting default boilerplate.
• Track retainage by job, not in aggregate. A spreadsheet (or your accounting system's retainage receivable report) showing what's owed, by project and by expected release date, turns a vague "we're owed money somewhere" into an actionable collections list.

The cash-flow problem retainage creates

Here's where retainage stops being a bookkeeping detail and becomes a survival issue. Construction is a low-margin business — net margins commonly run in the low single digits — and retainage withholds 5% to 10% of every dollar billed until months after the work (and the associated labor, material, and equipment costs) is already paid for.

Do the math on a job with a 6% net margin: if 10% of your billing is sitting in retainage, the withheld amount can be larger than your entire profit on the project. You did the work, paid your crew, paid your suppliers, and the number that's supposed to be your return is sitting on someone else's books.

Meanwhile, your obligations don't wait for substantial completion:

• Payroll runs weekly or biweekly — retainage release schedules don't.
• Material suppliers expect payment on their terms, often net-30, regardless of when your GC pays you.
• The next job needs mobilization capital — equipment, materials, and crew deployment — before this job's retainage is anywhere close to release.

A contractor can be genuinely profitable on paper and still be cash-starved in practice, simply because so much of what they've earned is temporarily locked up. That's a normal, common, structural feature of how construction gets paid — not a sign anything's wrong with the business.

When a bank can't move fast enough

Traditional bank financing is built for stable, predictable cash flow and can take weeks to underwrite — collateral review, months of financial statement analysis, a credit committee. That timeline doesn't match a retainage gap, which shows up fast (a big draw gets approved but retainage carves out a chunk of it) and needs to be bridged now, not next month. You can apply with Byzfunder directly if that's the situation you're in.

This is where revenue-based funding fits differently than a bank loan. Instead of underwriting primarily on personal credit history and collateral, a funder like Byzfunder looks at your actual business deposits and time in business — the revenue you're already generating, retainage and all. If your business is putting real money through the bank, you can qualify even with a credit profile a bank would decline, and you can move fast. Byzfunder's core product is a merchant cash advance (MCA) — a purchase of a portion of your future receivables at a fixed factor rate, not a loan and not an APR-based product — funded in as little as the same day to 24 hours. For contractors who want ongoing, repeat access to capital as retainage cycles through job after job, ByzFlex — Byzfunder's revenue-based revolving capital, never a traditional line of credit — is built for exactly that rhythm: draw against future revenue as retainage ties up cash, repay as the next draws and releases come in.

The point isn't to replace retainage income — it's to bridge the months between earning it and collecting it, so payroll clears, materials get bought, and the next job can mobilize on schedule. For more on how this financing works day to day, see how a merchant cash advance works and working capital business loans. If you're building out a broader funding strategy for your contracting business beyond just retainage gaps, start with the construction business loans hub.

Retainage at a glance

Worked example: retainage on a $500,000 subcontract

Illustrative example only. In this scenario, $50,000 — 10% of the entire contract value — isn't paid until after substantial and final completion, potentially months after the work and its associated costs were already incurred.

Bottom line

Retainage is a normal, contractual part of construction payment — 5% to 10% withheld on every progress payment until the job is substantially or fully complete, releasing in stages tied to substantial and final completion. It exists to protect the party paying for the work, and it isn't going away. What it does create, reliably, is a cash-flow gap: money you've earned that you can't spend on payroll, materials, or the next job's mobilization until months later. On construction's typically thin margins, that gap can outweigh your entire profit on a job.

Tightening your documentation and understanding your lien rights will get retainage released faster, but it won't close the timing gap entirely. When that gap threatens payroll or the next job's start date, revenue-based funding that qualifies on your deposits and time in business — not a slow bank process — can bridge it. Apply with Byzfunder to see what your business qualifies for.

Frequently asked questions

How does retainage work in construction? A percentage — usually 5% to 10% — of each progress payment is withheld by the owner or GC as the project moves forward. The withheld amount accumulates across every billing and is released in stages, typically at substantial completion and again at final completion, once punch-list items and closeout documentation are done.

How is retainage calculated? Retainage is calculated as the agreed percentage applied to the value of work completed on each pay application (documented on forms like the AIA G703). If the rate is 10% and you bill $100,000 of completed work, $10,000 is withheld and $90,000 is paid.

How long can retainage be held? It depends on the contract and, on some projects, applicable state law — but retainage commonly stays withheld from the first billing until well after substantial completion, often months into or past the project. Many states set some limits or release requirements, though they vary by state and project type, so check your specific contract and jurisdiction.

What is retainage in accounting? What is retainage receivable? Retainage receivable is the accounting entry for money you've earned and billed but haven't yet collected because it's being withheld under contract terms. It's tracked separately from regular accounts receivable since it isn't due until the contract's release conditions (like substantial completion) are met.

What is retainage in a construction contract? It's a clause specifying the percentage of each payment the owner or GC will withhold, and the conditions under which it's released — typically tied to substantial completion, final completion, and closeout documentation like lien waivers and warranties.

Can retainage be reduced? Often, yes. Many contracts allow retainage to step down (commonly from 10% to 5%) once the project reaches around 50% completion. Contractors can also negotiate reduced retainage terms up front, especially on projects where they have a strong track record with the owner or GC.

Is retainage the same on public and private projects? Not exactly. Public projects often follow more standardized retainage terms, sometimes with state-level requirements. Private projects are governed entirely by whatever the owner and GC negotiate into the contract, so terms can vary more widely.

Does retainage apply to subcontractors too? Yes. GCs typically withhold retainage from subcontractor payments in a similar structure to how the owner withholds from the GC, and sub-tier release often lags slightly behind the GC's own release from the owner.