Audit and assurance insights: Revenue recognition for long-term construction contracts

Long-term construction contracts are rarely straightforward. They involve evolving scopes, multiple stakeholders, and significant financial commitments.

Under AASB 15 Revenue from Contracts with Customers, recognising revenue correctly is one of the most critical and challenging tasks for construction businesses. Misjudging progress or failing to disclose key assumptions can lead to material misstatements and regulatory scrutiny.

“Auditors focus on whether the accounting reflects the economic reality of the contract. That means looking closely at performance obligations, progress measurement, and the judgements underpinning these decisions.”

Why long-term contracts require careful attention

Unlike short-term projects, long-term construction contracts typically span several reporting periods. Under AASB 15, revenue is recognised as performance obligations are satisfied, often over time rather than at completion. This approach better reflects the transfer of control to the customer, but it requires robust systems and regular reassessment.

AASB 15 and its impact on construction

AASB 15 introduced a five-step model for revenue recognition. For construction businesses, the most significant implications are:

1. Identifying the contract and its performance obligations
Construction contracts often include multiple phases; for example the project lifespan could be design, engineering, and build. The critical question is whether these are distinct performance obligations or part of a single combined obligation.

Example:
A contract for a commercial office building includes architectural design, structural engineering, and construction. If the customer can benefit from the design independently and it is separately identifiable, it may be treated as a distinct obligation. However, if the phases are highly interdependent and integrated, they form one combined obligation.

Auditors look for clear documentation of this assessment because it determines how revenue is allocated and recognised.

2. Determining the transaction price
Beyond the base contract price, businesses must consider variations, claims, and incentives. These are treated as variable consideration and included only when it is highly probable that a significant reversal will not occur. This requires:

• Assessing enforceability of variations.
• Evaluating historical success rates for claims.
• Considering contractual terms for performance bonuses.

3. Allocating the transaction price to performance obligations
If obligations are distinct, the transaction price must be allocated based on standalone selling prices.

This involves robust estimation techniques such as:

• Market-based approach: Using observable prices for similar services.
• Cost-plus margin approach: Estimating expected costs and applying a reasonable margin.
• Residual approach: Allocating remaining price after observable prices are assigned to other obligations.

“Auditors expect management to justify the chosen method and demonstrate consistency across contracts.”

4. Recognising revenue as obligations are satisfied
For most construction contracts, revenue is recognised over time using a method that faithfully depicts progress.

Common methods include:

• Cost-to-cost method: Comparing costs incurred to total estimated costs.
• Output method: Measuring physical progress or completion milestones.
• Units-of-delivery method: For contracts involving repetitive units (e.g., modular builds).

Each method has implications for accuracy and audit scrutiny. For example, cost-to-cost requires reliable forecasting of total costs and exclusion of uninstalled materials, while output methods demand objective verification of milestones.

Variable consideration and contract modifications

Construction contracts often evolve. Variations, claims, and incentives introduce complexity:

• Variations: Must be assessed for enforceability and probability of reversal.
• Claims: Recognised only when supported by persuasive evidence.
• Incentives: Included when performance targets are highly probable.

Auditors expect detailed documentation of these judgements and regular reassessment as circumstances change.

Disclosure requirements for revenue recognition of long-term construction contracts

Under AASB 15, disclosures must provide insight into:

• Judgements and estimates: How progress is measured, how variable consideration is assessed.
• Contract balances: Assets, liabilities, and movements during the period.
• Performance obligations: Nature, timing, and significant payment terms.

Failure to provide these disclosures can result in audit qualifications and regulatory attention.

Shortfalls PKF’s auditors in Australia are often investigating

These errors often stem from weak internal controls and poor documentation.

• Using outdated cost estimates, leading to overstated revenue.
• Including uninstalled materials in progress calculations.
• Recognising variations prematurely.
• Omitting explanations of key judgements in disclosures.

Auditors look for evidence that management has robust processes to support its decisions.

Canberra auditors highlight common questions from the construction sector
 

Why accurate revenue recognition is fundamental ahead of audit season

With increasing regulatory scrutiny and tighter margins in construction, accurate revenue recognition is fundamental to financial integrity. For CFOs and project managers, understanding these principles and embedding them into contract management processes is essential.

PKF Australia’s audit and assurance services provide confidence that revenue recognition is accurate, defensible, and transparent. Our team of auditors in Canberra combine technical rigour with practical insight, helping clients strengthen internal controls, improve forecasting processes, and reduce financial reporting risk.

With PKF, you gain an audit services partner who understands the complexity of long-term contracts and delivers assurance that supports complete and ongoing project lifecycle.