Percentage Of Completion Vs Completed Contract Method

Long-term construction projects and large-scale engineering contracts present a unique challenge for accountants: how do you recognize revenue and expenses fairly when a project spans multiple reporting periods? In practice, the answer lies in choosing the right revenue recognition method. For decades, the debate has centered on two primary approaches: the percentage of completion method and the completed contract method.

While modern accounting standards like ASC 606 (US GAAP) and IFRS 15 have converged the core principles—effectively mandating the recognition of revenue over time for most long-term contracts—understanding the mechanics, differences, and strategic implications of these two methods remains critical for financial professionals, project managers, and stakeholders analyzing construction financial statements Worth knowing..

The Core Philosophy: Timing Is Everything

At the heart of the distinction lies the concept of timing. When does a company actually "earn" its revenue? Is it a gradual process as value is created, or a singular event upon delivery?

The percentage of completion method (PCM) operates on the accrual principle that economic activity happens continuously. As a building rises from the foundation to the roof, value is being created daily. Which means, revenue, costs, and gross profit should be recognized proportionally in each accounting period based on the progress made.

Conversely, the completed contract method (CCM) adopts a conservative, realization-based approach. On top of that, under this method, no revenue or profit is recognized until the project is substantially complete. On the flip side, it argues that the outcome of a long-term contract is too uncertain to estimate reliably until the very end. All costs accumulate on the balance sheet as an asset (Work in Progress), and all billings accumulate as a liability, only flipping to the income statement upon final delivery Practical, not theoretical..

Deep Dive: Percentage of Completion Method (PCM)

How It Works

PCM requires the company to estimate the total contract revenue, total estimated costs, and the stage of completion at the end of every reporting period. The most common input measure used to determine the stage of completion is the cost-to-cost method:

Percentage Complete = Costs Incurred to Date / Total Estimated Costs

Once the percentage is determined, it is applied to the total contract revenue to calculate revenue earned to date. Revenue recognized in the current period is simply the difference between revenue earned to date and revenue recognized in prior periods.

Journal Entry Mechanics

1. Recognize Revenue: Debit Construction in Progress (Asset), Credit Construction Revenue.
2. Recognize Costs: Debit Construction Expense, Credit Materials/Cash/Payroll (standard cost accumulation).
3. Billings: Debit Accounts Receivable, Credit Billings on Construction Contract (Liability).

The net result on the balance sheet is a net asset (if costs + recognized profit > billings) or a net liability (if billings > costs + recognized profit) Worth keeping that in mind..

Advantages of PCM

• Smoother Earnings: It prevents the "lumpiness" of earnings, showing a steady stream of revenue and profit that matches the actual economic activity.
• Better Matching: It aligns revenues with the expenses incurred to generate them in the same period (Matching Principle).
• Informative for Stakeholders: Banks, sureties, and investors get a real-time view of project profitability and cash flow trajectory.

Risks and Challenges

• Estimation Risk: PCM lives and dies by the accuracy of the Estimated Cost to Complete (ETC). If a project manager underestimates remaining costs, the percentage complete is overstated, leading to premature profit recognition. A subsequent correction creates a "catch-down" adjustment that can shock the income statement.
• Subjectivity: Determining the "stage of completion" can involve judgment (e.g., measuring units delivered vs. labor hours vs. cost-to-cost), opening the door for earnings management.

Deep Dive: Completed Contract Method (CCM)

How It Works

Under CCM, the income statement remains untouched by the project until substantial completion—typically defined as 95-98% complete or when the owner takes beneficial occupancy. During the construction phase:

• Costs are capitalized to an inventory asset account: Construction in Progress.
• Billings are recorded as a liability: Billings in Excess of Costs (or Deferred Revenue).
• Gross Profit is zero until the final period.

Upon completion, the accumulated costs are expensed (COGS), the accumulated billings become Revenue, and the entire gross profit is recognized in a single period.

When Is CCM Permitted?

Under current US GAAP (ASC 606), CCM is rarely permitted for financial reporting. It is generally only allowed for:

1. Short-term contracts (starting and ending in the same period).
2. Contracts where reliable estimates cannot be made (highly speculative outcomes).
3. Home construction contracts meeting specific criteria (though even this is narrowing).

Note: For US Tax purposes (IRC Section 460), CCM is still an option for certain small contractors (average annual gross receipts ≤ $30M) and home construction contracts, creating a permanent book-tax difference requiring deferred tax accounting.

Advantages of CCM

• Maximum Conservatism: No risk of recognizing "phantom profits" on a project that eventually turns into a loss.
• Simplicity: No complex monthly estimation processes, no need for certified project managers to sign off on percent-complete schedules.
• Tax Deferral: For tax purposes, it allows contractors to defer taxable income to later years, preserving cash flow.

Disadvantages of CCM

• Distorted Financials: A contractor with 10 projects finishing in Year 2 and zero in Year 1 shows massive volatility. Year 1 looks unprofitable; Year 2 looks like a windfall. This makes trend analysis and valuation nearly impossible.
• Violates Matching Principle: Costs incurred in Year 1 are matched against revenue in Year 2.
• Balance Sheet Bloat: Large Work-in-Progress (WIP) balances accumulate without corresponding profit recognition, potentially distorting working capital ratios.

Head-to-Head Comparison

The Modern Standard: ASC 606 and IFRS 15 – The "Over Time" Mandate

It is impossible to discuss this topic without addressing the 2018/2019 revenue recognition overhaul. ASC 606 (and its international twin IFRS 15) replaced the legacy, industry-specific guidance (like ASC 605-35 / SOP 81-1) with a single, principles-based five-step model.

Under the new standard, the binary choice between "PCM vs CCM" has largely been replaced by a determination of when control transfers.

The "Over Time" Criteria

A contractor recognizes revenue over time (effectively PCM) if any of the following criteria are met:

1. The customer simultaneously receives and consumes the benefits as the entity performs (e.g., routine

The “over‑time” determination under ASC 606/IFRS 15 is therefore not a simple binary choice between PCM and CCM; it is a nuanced assessment of three inter‑related indicators that together demonstrate whether control of the finished product is being transferred to the customer continuously Simple, but easy to overlook..

2. The entity creates or enhances an asset that the customer controls as the asset is built.
When a construction contract produces a building, a pipeline, or any other long‑lived asset that will be owned by the customer, the very nature of the work means the customer is receiving the benefits of the entity’s effort as it progresses. Even if the customer does not physically occupy the site, the ability to direct the use of the asset (e.g., by deciding on interior finishes, equipment placement, or operational parameters) satisfies this indicator. In practice, contractors substantiate this criterion by documenting the customer’s right to direct the use of the asset and by showing that the asset has no alternative use to the contractor absent the customer’s direction.

3. The entity’s performance creates or enhances an asset with no alternative use to the entity and the entity has an enforceable right to payment for work performed to date.
If the contract results in a bespoke asset—such as a custom‑designed processing plant—there is typically no market for that asset outside of the specific contract. The contractor’s effort therefore generates an asset that the customer exclusively controls, and the contractor’s right to payment is tied directly to the progress of that performance. This criterion is especially relevant for “design‑build” or “engineering‑procurement‑construction” (EPC) projects where the final deliverable is unique and cannot be repurposed.

When any one of these three indicators is met, revenue must be recognized over time. Because of this, the majority of construction contracts—particularly those lasting more than a single reporting period—fall under the PCM umbrella. CCM remains permissible only when an entity can convincingly demonstrate that none of the over‑time criteria are satisfied, which is rare for construction because the very act of building a structure inherently transfers control to the customer as work proceeds No workaround needed..

It sounds simple, but the gap is usually here Not complicated — just consistent..

Practical Implementation Under ASC 606

1. Selecting a Units‑of‑Output or Cost‑Based Input Method
   The standard permits revenue to be recognized as the entity satisfies each performance obligation. For most construction contracts, the most reliable measure of progress is cost incurred to date relative to total estimated costs (the “cost‑to‑cost” method). Alternatively, units of output (e.g., cubic yards of concrete placed, linear feet of pipe installed) may be used when a direct, measurable output can be quantified. The chosen method must be applied consistently and supported by dependable estimation processes Not complicated — just consistent..

2. Estimating Total Contract Costs
   ASC 606 requires that the transaction price be allocated to each performance obligation based on its standalone selling price. For a construction contract, the entire transaction price is usually allocated to a single performance obligation—“provide a fully completed project.” The estimate of total costs must incorporate all material, labor, equipment, subcontractor, and overhead expenses, as well as a provision for changes in scope. Because the estimate drives the rate of revenue recognition, any significant revision triggers a cumulative catch‑up in the period of change, which directly impacts the income statement.

3. Disclosure Requirements
   The standard mandates extensive disclosures about the nature of the contracts, the methods used to measure progress, the effects of contract modifications, and the timing of revenue recognition. Companies must also disclose the amount of unsatisfied (performance) obligations, which for construction typically represents the remaining value of contracts in progress at period‑end.

Impact on Financial Statements

• Income Statement Smoothing – By recognizing revenue proportionally as costs are incurred, PCM (the over‑time approach) yields a more stable gross margin and operating income trend. This reduces the volatility that CCM can produce, especially for firms with multiple projects completing in the same fiscal year Less friction, more output..

• Balance Sheet Implications – Under over‑time recognition, work‑in‑progress (WIP) balances remain on the balance sheet but are matched with corresponding revenue, mitigating the “balance‑sheet bloat” criticism of CCM. Nonetheless, large WIP amounts still appear, and firms must monitor the ratio of WIP to total assets, as high levels may signal inefficiencies or overly aggressive cost estimates Not complicated — just consistent. And it works..

• Cash‑Flow Management – Because revenue is recognized as the contractor bills for costs, the cash‑flow impact is more closely aligned with the timing of cash inflows. This alignment supports better working‑capital management and reduces the need for aggressive tax deferral strategies that were sometimes employed under CCM Worth keeping that in mind..

Transition Considerations

Entities that previously applied CCM must reassess each contract to determine whether the over‑time criteria are now met. The transition provisions of ASC 606 permit a modified retrospective approach, allowing a cumulative effect adjustment to opening retained earnings rather than restating prior periods. Companies typically perform a “contract‑by‑contract” review, re‑estimate total expected costs, and document any changes in the measurement of progress. The goal is to make sure the new revenue pattern reflects the economic substance of the contracts rather than the financial statement presentation of the prior regime.

Conclusion

The adoption of ASC 606 and IFRS 15 has effectively eliminated the practical relevance of the traditional Completed Contract Method for most construction and long‑term service contracts. By anchoring revenue recognition to the transfer of control, the standards compel entities to recognize revenue over time—the very premise underlying the Percentage of Completion method—provided that the contract’s substance satisfies at least one of the over‑time criteria. On the flip side, while CCM retains a narrow niche for short‑term, high‑risk, or highly speculative projects where reliable progress measurement is impossible, it is no longer the default or preferred approach under contemporary accounting standards. So naturally, firms that align their contract‑accounting practices with ASC 606/IFRS 15 benefit from more predictable financial reporting, reduced volatility, and greater transparency for investors, lenders, and tax authorities alike Simple, but easy to overlook. Worth knowing..