WIP Accounting in Construction and Roofing: Handling It During a Business Sale
WIP accounting in construction — including roofing — tracks revenue and costs on jobs that are underway but not yet complete. Buyers in a roofing business sale review it closely because it directly affects the numbers they are valuing.
By Muhammad Azfar, Founder & CEO, Auctus Capital Partners
Key Takeaways
01
WIP (work-in-progress) accounting tracks revenue and costs on jobs underway but not yet complete, typically using a percentage-of-completion method.
02
An inaccurate or inconsistent WIP schedule can materially change what a buyer believes they are paying for at close.
03
Regular job-cost reconciliation and consistent percentage-of-completion documentation are key preparation steps.
WIP Accounting in Construction and Roofing: What It Means
Most founder-owners understand their EBITDA, their multiple, and the add-backs that support both. Fewer have spent time in the mechanics of a WIP schedule, because it typically lives inside the accounting function rather than in front of the owner. That gap matters more than it looks. Roofing work runs on jobs that can take weeks to finish, and every one of those jobs sits partly earned and partly costed at any given moment. A buyer’s diligence team will pull that schedule early, because it tells them how much of the pipeline is real revenue and how much is still risk.
This piece defines WIP accounting and percentage-of-completion in plain terms, then applies both to what a buyer expects to see before and during a roofing business sale. Our team at Auctus Capital Partners works through this schedule with clients as part of preparing a company for a sell-side engagement, well before a buyer ever sees the file.
WIP accounting tracks revenue and costs on jobs that are underway but not yet complete, typically using a percentage-of-completion method.
In plain terms: a roofing company rarely finishes a job in the same accounting period it starts it. WIP accounting is the method that recognizes how much of that job’s revenue and cost has actually been earned so far, rather than waiting until the job closes out to record anything.
The percentage-of-completion method is the standard way to make that calculation. It compares costs incurred to date against total estimated costs for the job, then applies that ratio to the contract’s total value to determine how much revenue to recognize in the current period. A job that is 40% through its estimated costs is treated, for accounting purposes, as roughly 40% earned.
The result is a WIP schedule: a report, usually rebuilt monthly, listing every open job alongside its contract value, costs to date, estimated costs to complete, and the revenue recognized so far.
Why Buyers Scrutinize WIP Schedules in Roofing M&A
An inaccurate WIP schedule can materially change what a buyer believes they are paying for at close. This is the reason a buyer’s financial diligence team treats it as a core exhibit rather than a footnote.
A roofing business carries a meaningful share of its value in open jobs at any point in time. If the WIP schedule overstates how far along a job actually is, it overstates earned revenue and, by extension, overstates near-term EBITDA. If it understates progress, the reverse happens: real value goes unrecognized and the company can look weaker than it is. Either error changes what the buyer is actually acquiring at the moment of transfer, separate from anything about the long-term quality of the business.
Buyers also use the WIP schedule to test consistency. A percentage-of-completion methodology applied unevenly from job to job, or changed shortly before a process begins, reads as a control weakness rather than a rounding issue. That scrutiny compounds with disputed change orders, since unresolved cost or scope disagreements on open jobs make the underlying estimate itself unreliable.
None of this is unique to roofing, but long-duration jobs and weather-dependent scheduling make the exposure larger in this sub-sector than in businesses with shorter production cycles. It sits alongside the other diligence areas a buyer will work through in a compressed timeline — see our companion piece on roofing business sale due diligence for how WIP fits into that broader process.
How to Get Your WIP Schedule Sale-Ready
Reconciling job costs regularly is a foundational preparation step a roofing business owner can take before a sale process begins.
- Reconcile job costs regularly. Compare recorded costs to actual invoices and subcontractor billings on a set cadence, not only at year-end. A WIP schedule that is reconciled monthly gives a buyer confidence that the numbers reflect real job performance rather than an estimate that has drifted.
- Document percentage-of-completion methodology consistently. Apply the same method, the same cost-to-estimate ratio logic, and the same review process across every open job. Write the methodology down so it can be explained the same way in month one of diligence as in month six.
- Flag any jobs with disputed change orders. Isolate jobs where scope or cost is contested and note the status clearly rather than folding an unresolved estimate into the broader schedule. A flagged item with context reads as good disclosure; a buried one reads as a surprise.
Getting a WIP schedule into this condition is part of the broader preparation our senior bankers walk clients through ahead of an engagement in selling a roofing business. The goal is a schedule a buyer’s diligence team can review once and trust, not one that generates a second round of questions.
Article Summary
WIP accounting tracks revenue and costs on incomplete jobs, and buyers in a roofing business sale scrutinize it closely because inaccuracies can shift the effective purchase price at close. Regular job-cost reconciliation and consistent documentation are key preparation steps a roofing business owner can take. Auctus Capital Partners helps sellers get WIP schedules sale-ready before a process begins.
FAQ
1
Is WIP accounting only relevant to construction and roofing businesses?
It is most commonly discussed in construction-related businesses, roofing included, because long-duration jobs make percentage-of-completion tracking especially important there. A retail or professional-services business typically completes a transaction within a single accounting period, so there is little to recognize partway through. A roofing company, by contrast, can have a dozen jobs open at once, each at a different stage of completion, each contributing a partial revenue figure to the current period. That structural difference is why WIP schedules show up as a named diligence item in construction and roofing transactions specifically, rather than as a general M&A requirement applied evenly across every industry.
2
Can a buyer walk away over WIP issues?
Significant, unresolved WIP discrepancies can slow or complicate a deal, though most issues are addressed through adjustment or further diligence rather than automatically ending a transaction. In practice, a buyer who finds an inconsistency in the WIP schedule typically responds by asking more questions, requesting supporting documentation on the affected jobs, or proposing a purchase-price adjustment tied to the discrepancy rather than terminating the process outright. The exception is a pattern of unreliable or inconsistently applied methodology across multiple jobs, which raises broader questions about the quality of the company’s financial reporting rather than the status of any single contract. That is why consistent documentation, applied the same way job to job, does more to protect a transaction than resolving any one discrepancy after the fact. Founder-owners who treat WIP reconciliation as a routine part of monthly close, rather than a task performed only when a sale is contemplated, tend to enter diligence with fewer open questions to answer.
Ready to Talk Through Your WIP Schedule?
A clean, consistent WIP schedule protects a roofing business owner from surprises late in a sale process. Buyers read it as a proxy for the reliability of the rest of the company’s financial reporting, which makes it worth getting right well before a process starts.
Our team at Auctus Capital Partners helps founder-owners get this documentation sale-ready as part of preparing for a sell-side engagement, working directly with senior bankers rather than a junior team. If you are weighing the timing of a transaction, or simply want a second set of eyes on how your WIP schedule would read to a buyer, Schedule a Confidential Discussion with our team.
This article is provided for general informational purposes and does not constitute financial, accounting, tax, or legal advice, and it does not describe the terms of any specific engagement or transaction. Founder-owners should consult their own CPA and legal counsel regarding the accounting treatment and sale readiness of their own company.
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