Glossary
Retainage in Construction: What It Is and Why It Complicates Acquisitions
Retainage is the portion of each progress billing that a contractor withholds from a subcontractor, or that an owner withholds from a general contractor, until a defined completion milestone is reached, typically sitting on the balance sheet as a long-dated receivable that can take months or years to convert to cash.
How retainage works
On most construction and trades contracts, the owner or general contractor holds back a fixed percentage of each invoice, commonly 5 to 10 percent, as a performance guarantee. The subcontractor bills monthly progress draws and collects most of the payment promptly, but that withheld slice accumulates in a retainage receivable and is only released when the contract reaches substantial completion or final closeout. In QuickBooks and most project accounting systems, retainage shows up as a separate line from ordinary trade AR precisely because the collection timeline is fundamentally different.
Why retainage matters on the balance sheet
Retainage is real earned revenue that has not yet been collected, and it behaves differently from the rest of AR in one critical way: the contractor cannot accelerate collection by following up. Collection depends on project closeout, punch-list sign-off, and sometimes owner approval of final quantities, any of which can drag well past the originally expected date. A business with strong revenue and healthy EBITDA can still carry persistent cash flow pressure simply because its retainage tail is long.
How retainage affects a construction or trades acquisition
When the Treewalk transaction advisory team works through a construction QoE, retainage receivables are one of the first items to separate out and age carefully. The diligence questions are specific: How old is each balance? Which contracts are fully complete versus still active? Has the seller been invoicing final retainage on closed jobs, or is there a backlog of uncollected closeout billings sitting unattended? Revenue recognition is a parallel concern: project-based revenue under percentage-of-completion accounting requires verifying that billed amounts and recognized revenue are actually in sync. A mismatch between progress billings and the underlying work done can produce either overbilling (a current liability) or underbilling (an understated asset), and both distort EBITDA and working capital simultaneously. In construction acquisitions specifically, the Treewalk team has consistently flagged that revenue recognition, holdbacks, and billing cadence require hands-on, contract-level review because the financials can look clean at the surface while the underlying cash conversion cycle is considerably longer than it appears.
Retainage and the working capital peg
Retainage receivables often become a negotiation point when setting the net working capital peg. The core question is whether retainage belongs inside the peg or outside it. Either treatment can be defensible, but the method must be defined clearly, applied consistently to both the target calculation and the closing true-up, and supported by a project-level retainage schedule rather than a single aggregated balance sheet line. Arriving at closing with a peg that blends retainage and ordinary AR without distinguishing them is one of the more common working-capital disputes Treewalk sees in construction deals.
Frequently asked questions
What is retainage in construction?
Retainage is a contractually withheld percentage of each progress billing held by the paying party as a performance guarantee until the project reaches substantial or final completion. It is a normal feature of construction and trades contracts and sits on the contractor’s books as a receivable until released.
Is retainage the same as a holdback?
In Canadian construction contracts the term holdback is used; in US contracts retainage is more common. Both refer to the same economic concept: a portion of each payment that is deferred until completion. In an acquisition context the terms are often used interchangeably, and the diligence treatment is the same regardless of the label.
How does retainage affect working capital in a deal?
Because retainage collects on a different, longer timeline than ordinary trade receivables, it can overstate apparent liquidity if it is lumped in with regular AR when setting a working capital peg. A buyer inheriting a large retainage balance may find that cash conversion is slower post-close than the historical financials suggested. A proper construction QoE will age the retainage balance by project, separate it from current AR, and surface any stale or disputed amounts before the peg is negotiated.
Where to next
For a full walkthrough of how construction and trades QoEs handle revenue recognition and project-based billings, see our construction quality of earnings guide. To understand how the working capital target is set and trued up at close, see the net working capital peg and net working capital atoms. To work through a construction or trades acquisition with Treewalk’s diligence team, visit the transaction advisory services page.
