In plain words
A contractor recognising revenue over time must choose how to measure progress. The question is whether to use costs incurred (an input method) or certified physical work (an output method). The method must faithfully reflect work transferred to the client. If costs are distorted, such as by materials stockpiled but not yet installed, the contractor adjusts for them or uses an output method, applying one method consistently to similar contracts.
Why it matters
The method chosen to measure progress directly drives the timing and amount of revenue recognized over a construction contract's life; picking a method that does not faithfully depict the transfer of control (rather than the one that is easiest to administer) can materially front-load or back-load revenue and distort period-by-period margins on long-duration contracts.
Diagnostic questions
Would a cost-based input method be distorted by uninstalled materials, mobilization costs, or wasted/abnormal costs that do not correspond to progress? Does reliable, independently certified output data (engineer or quantity surveyor milestones, surveys) exist that would better depict progress than a cost ratio? Is the selected method (input or output) applied consistently to similar performance obligations across the portfolio, rather than switched opportunistically? Is the progress estimate reassessed each period as new information emerges, with a documented rationale for the method chosen?
Recognition
1) Confirm the performance obligation is satisfied over time (control transfers continuously, e.g. the customer controls the asset as it is built or the asset has no alternative use and the entity has an enforceable right to payment for performance to date). 2) For each performance obligation, evaluate the nature of the goods/services being transferred to determine whether an input or output method best depicts that transfer. 3) Test whether a cost-based input method would be distorted by costs that do not correspond to progress, such as uninstalled materials, mobilization, wasted/abnormal costs, or significant subcontractor advance payments; if so, adjust for these or use an output method instead. 4) Where reliable, objective progress data exists (engineer/quantity-surveyor certified milestones, units delivered, surveys of work performed), prefer an output method as it typically depicts transfer of control most directly. 5) Select one method per performance obligation and apply it consistently to similar performance obligations in similar circumstances across the portfolio. 6) Reassess the estimate of progress each reporting period as facts change, and document the rationale for the method chosen.
Measurement
Under an input method, measure progress as costs incurred to date relative to total expected costs, excluding costs that do not depict progress (wasted materials, abnormal/inefficient costs, and generally uninstalled materials not yet representing work performed unless the entity can demonstrate the materials were procured specifically for and are integral to the project). Under an output method, measure progress directly by reference to units delivered, milestones certified, or surveys of work performed, ensuring the measure is reliably determinable and, ideally, independently verifiable. Reassess and true-up the cumulative revenue recognized each period as the progress estimate is updated (a change in estimate, applied prospectively).
Presentation & disclosure
Disclose the method used for each significant class of contract and the reason it faithfully depicts progress, particularly where input and output methods would produce materially different results; disclose significant judgments made in determining the timing of satisfaction of performance obligations and the methods used to measure progress, including any adjustments made to a cost-based input method to exclude non-representative costs.
Common mistakes
- Defaulting to a cost-based input method purely because it is administratively simpler, without testing whether it faithfully depicts progress
- failing to adjust the input method for uninstalled materials or inefficient/wasted costs, overstating revenue in early contract periods
- switching between input and output methods across similar contracts without a consistent, documented policy
- treating advance/mobilization payments to subcontractors as if they represent progress on the contractor'
- s own performance obligation
- not revisiting the progress estimate as new information emerges, resulting in stale or unsupported percentage-of-completion figures.
Simple example
A contractor has a fixed-price infrastructure contract for total transaction price of SAR 100,000,000 with total expected costs of SAR 80,000,000. By year-end, the contractor has incurred SAR 24,000,000 of costs, of which SAR 6,000,000 relates to bulk-procured pipes stockpiled on site but not yet installed. An independent engineer certifies physical progress (an output measure) at 20% of the contract scope completed. Because the cost-based input ratio (24,000,000/80,000,000 = 30%) is distorted by uninstalled materials that do not yet reflect work performed, the contractor uses the engineer-certified output method of 20%. Revenue recognized to date = 20% x SAR 100,000,000 = SAR 20,000,000. Costs recognized in cost of sales exclude the uninstalled pipe stock (recognized as an asset - contract fulfilment cost/inventory) and equal SAR 18,000,000 (24,000,000 - 6,000,000). Journal entries at year-end: Dr Contract asset 20,000,000 Cr Revenue 20,000,000 Dr Cost of sales 18,000,000 Dr Inventory - uninstalled materials 6,000,000 Cr Contract costs incurred (cash/payables) 24,000,000
Professional judgment
Method selection is a policy choice that should be documented and tested against actual project profiles, not assumed as a one-size-fits-all default. Grey areas include: how much uninstalled material is enough to distort an input method (a small buffer stock may not warrant switching methods, but bulk pre-procurement can materially skew results); whether engineer/surveyor certifications are sufficiently frequent, independent and granular to be relied upon as an output measure; and how to treat significant mobilization or design costs incurred before physical construction begins. The evidence that should drive the conclusion includes the contract's risk profile, historical correlation between costs incurred and physical progress on similar past contracts, and the availability of independent third-party certification.
Source basis
IFRS 15 · Revenue from Contracts with Customers
Paragraph references
Verified against the official standard texts used in the IFRS Expert skill.
Related issues
- IFRS 15Off-plan sales: revenue over time or at handover
- IFRS 15 / IAS 2Land swaps and revenue-sharing with landowners
- IFRS 15Long instalment plans and the financing component
- IFRS 15 / IAS 2Cancellations, defaults and repossessed units
- IFRS 15Commissions on off-plan sales
- IFRS 15Construction contract revenue and measuring progress
Educational and navigation content only. Not professional advice. Does not reproduce official IFRS/IAS text. Consult the authoritative standards and qualified professionals; professional judgment may still be required.
