Misstatement Tracker
for Construction

ISA 450 misstatement evaluation for Construction

Construction audits revolve around contract accounting, and contract accounting revolves around estimates. Under IFRS 15, a construction company recognising revenue over time must estimate total contract costs to measure progress (the input method under IFRS 15.B18). Every contract on the books carries an estimate-to-complete that drives the revenue recognised to date, the contract asset or liability position, and the margin reported. When the auditor reviews a sample of contracts and concludes that the estimated costs to complete are understated, the knock-on effect is that revenue has been over-recognised, the contract asset is overstated, and the reported margin is too high. A single contract where the auditor adds €300,000 to the estimate-to-complete can swing the reported revenue by more than performance materiality. ISA 450.5 requires the auditor to accumulate these misstatements, and the tracker is designed to link the cost estimate misstatement to its revenue, balance sheet, and margin effects automatically.

Variation orders and claims create a second layer of estimation risk. IFRS 15.56 allows variable consideration (which includes variations, claims, and incentive payments) to be included in the transaction price only to the extent that it is highly probable that a significant reversal will not occur. Construction companies often have pending variation orders at year-end that have been submitted to the client but not yet formally approved. Management may include the full variation amount in the transaction price based on past experience of approval rates. The auditor needs to assess whether the constraint in IFRS 15.56 is met for each material variation. If the auditor concludes that a €500,000 variation does not meet the highly-probable threshold, the full amount is a misstatement that should be excluded from the transaction price. Record variations and claims as separate misstatement items rather than bundling them into the overall contract estimate.

Onerous contract provisions under IFRS 15 and IAS 37 produce misstatements when management's loss estimate for a loss-making contract differs from the auditor's assessment. IAS 37.68 requires that the provision for an onerous contract reflect the least net cost of exiting the contract, which is the lower of the cost of fulfilling the contract and any compensation or penalties from failing to fulfil it. Construction companies sometimes understate loss provisions because the project team remains optimistic about recovering the position through cost savings or variations. The auditor's independent assessment of the estimate-to-complete for onerous contracts often exceeds management's by a significant margin. This excess is a judgmental misstatement under ISA 450.A1.

Retention receivables require separate misstatement tracking because they involve both valuation and classification considerations. Retention amounts (typically 5% to 10% of certified work) are held by the client until practical completion or the end of a defects liability period. Under IFRS 15, these are contract assets until they become unconditional (at which point they become receivables). Misstatements arise from four sources: classification errors (presenting conditional retentions as trade receivables rather than contract assets), timing errors (recognising retentions before the work is certified), impairment failures (not providing for retentions on disputed contracts or against financially distressed clients), and measurement errors (applying the wrong contract price to the retention percentage). Each source produces a different type of misstatement. Classification errors affect presentation only. Timing errors affect revenue. Impairment failures affect the carrying value of the contract asset. Measurement errors affect both the contract asset and revenue. Track them separately because the ISA 450.12 communication needs to explain each type to those charged with governance.