IAS 36: What Big 4 Auditors Flag in Impairment Reviews
Author
Sai Manikanta Pedamallu
Published
Reading Time
17 min read
Table of Contents
IAS 36: What Big 4 Auditors Flag in Impairment Reviews
By Sai Manikanta Pedamallu (ACCA, CMA US, CSCA US, CGMA, ACMA, Dip IFRS, M.Com, MBA, MA)
Lead Instructor, Global Fin X | www.globalfinx.in/manikanta
Posts 39 and 40 covered IAS 36's mechanics. This post focuses on where those mechanics break down in practice, what auditors spend most of their time on during impairment reviews, and what NFRA has signalled about the quality of impairment auditing in India.
I want to be direct: impairment of non-financial assets is one of the highest-risk areas in financial reporting globally. It consistently features in NFRA inspection findings, PCAOB findings on India-based firms, and IFIAR's aggregated global survey of audit deficiencies. The reasons are not mysterious. Impairment involves long-range cash flow forecasts, unobservable discount rates, CGU boundaries that require judgment, and management teams who have strong incentives to avoid recognising impairment losses. Each of those conditions creates pressure on audit quality.
The NFRA Signal: Why This Matters for Indian Practice
NFRA issued its Auditor-Audit Committee Interactions Series 4 specifically addressing the audit of accounting estimates and judgements under Ind AS 36 and SA 540. The series outlines detailed questions that audit committees should be asking auditors about impairment testing, covering CGU identification, goodwill allocation, cash flow assumptions, discount rates, and sensitivity disclosures.
NFRA's 2024 audit quality inspections of Price Waterhouse Chartered Accountants focused specifically on areas including impairment of non-financial assets, citing these as higher-risk areas for material misstatement.
A consistent pattern has emerged across NFRA inspection cycles: deficiencies continue to be observed in impairment assessments alongside related-party transactions and going concern evaluations. What is notable is the degree to which similar themes have recurred across firms and over time.
This is not a new problem. It is a structural one. Inspection findings suggest that audit firms rarely lack formal policies or technical guidance on impairment. The problem lies in how early and consistently those policies are implemented during the audit lifecycle. When impairment testing is treated as a checklist item addressed toward the end of fieldwork, gaps and inconsistencies increase.
The practical implication: impairment audit work that starts late in the audit cycle, after draft financial statements are already prepared, is almost always inadequate. The assumptions have already been fixed by management. The auditor is then in the position of evaluating rather than challenging, and the challenge is much harder at that stage.
Finding 1: Indicator Assessment Treated as a Formality
The impairment indicator assessment is supposed to be a genuine evaluation at every reporting date. In practice, it frequently becomes a checklist exercise where the preparer confirms that no obvious indicators exist and moves on.
The audit risk is significant. An entity whose market capitalisation has fallen below net book value, whose revenues are materially below budget, or whose sector faces structural disruption has clear impairment indicators. Concluding that no indicators exist requires specific documentation of why none of the standard internal and external indicators apply. Without that documentation, the conclusion is not supportable.
NFRA's guidance specifically asks auditors to test whether the entity has identified all relevant impairment indicators, including both internal sources (actual cash flows significantly worse than budget) and external sources (significant adverse changes in market, economic, or legal environment).
Common findings in this area:
Market capitalisation shortfall ignored. When an entity's total market cap is below consolidated net assets, the entire balance sheet is signalling potential impairment. Treating this as irrelevant without performing impairment tests on specific CGUs is a deficiency. The fact that market prices can be volatile does not eliminate the indicator; it requires the auditor to assess whether the shortfall is sustained and material.
Budget versus actual variance dismissed. An entity reporting actual EBITDA 25% below the budget used to support goodwill carrying values has a clear internal indicator. Auditors should challenge the adequacy of prior-year VIU forecasts and assess whether the current-year forecast is materially more optimistic than what was achieved last year.
Sector headwinds treated as temporary. An entity in thermal power, traditional media, or retail facing structural competitive disruption often labels impairment indicators as "temporary cyclical factors." Auditors must evaluate whether the deterioration is genuinely cyclical (recoverable) or structural (not recoverable). The distinction requires documented analysis, not management assertion.
Finding 2: CGU Boundaries Drawn Too Broadly
CGU identification is the most consequential judgment in the entire impairment framework. Combining a deteriorating business unit with a healthy one into a single CGU masks the impairment. Yet there is consistent pressure to define CGUs at a higher level of aggregation.
The audit approach requires auditors to challenge whether the chosen CGU level reflects the smallest independently cash-generating group, not merely a convenient administrative unit.
The aggregation problem. A conglomerate that defines its entire chemicals division as one CGU, even though its commodity chemicals and specialty chemicals businesses generate cash from entirely different customer bases and markets, is almost certainly defining CGUs too broadly. If a buyer would pay separately for the commodity chemicals business and separately for the specialty chemicals business, they are separate CGUs.
CGU boundaries changing without documented rationale. IAS 36 permits CGU boundary changes when operations change, but changes that conveniently combine an impaired CGU with a healthy one require particularly strong documentation of the operational change that justifies them. Auditors test year-on-year consistency and demand a documented business rationale for any change.
NFRA's guidance asks auditors to specifically test whether CGU identification has been consistent from one period to another and, where there is a change, whether the rationale is reasonable.
Finding 3: VIU Cash Flow Forecasts That Are Persistently Optimistic
This is the most commonly found and most consequential deficiency in impairment auditing. The VIU is highly sensitive to the cash flow forecasts used. Management teams face strong incentives to project favourable outcomes to avoid impairment charges. Without robust audit challenge, VIU forecasts tend to be optimistic.
The audit test is called "prior-year forecast accuracy" or "backcast analysis." The auditor takes last year's approved forecast (the one used in last year's VIU) and compares it to what actually happened. If actual cash flows in the most recent year were 20% below last year's forecast, and management is now presenting a current-year forecast that is equally optimistic, the current forecast requires significant justification before it can be accepted.
NFRA's guidance specifically asks whether auditors have tested the reliability of prior-period forecasts by comparing them against actual outcomes.
Common patterns auditors identify:
Consistent hockey-stick projections. Cash flows are flat or declining for the first year or two, then recover sharply in later years of the forecast period, producing a VIU that just barely exceeds carrying amount. When this pattern appears in every year's impairment test, the hockey stick is not a genuine projection; it is an anchoring device to preserve the carrying amount.
Terminal value carrying the test. When the present value of the explicit cash flow forecast period is below carrying amount, but the terminal value (capitalised perpetuity) saves the test, auditors focus intensely on the terminal growth rate assumption. A terminal growth rate of 3-4% in a business with declining revenue and competitive threats is not supportable.
Revenue growth assumptions exceeding market. A CGU assuming 12% annual revenue growth for five years in a mature, competitive market requires independent market data to support it. Auditors obtain third-party industry forecasts, analyst reports, and management's own strategic planning documents to corroborate or challenge these assumptions.
Finding 4: Discount Rates Incorrectly Derived
The pre-tax discount rate in a VIU calculation is one of the most technically demanding inputs in financial reporting. Getting it wrong by even a few percentage points moves recoverable amount by hundreds of crores in a large CGU.
Common deficiencies:
Using a post-tax WACC without grossing up. IAS 36 requires a pre-tax rate for VIU. A post-tax WACC cannot simply be used as-is; it must be grossed up for the applicable tax rate. The grossed-up rate is higher than the post-tax WACC, which reduces VIU. Using the post-tax rate as if it were the pre-tax rate understates the discount and inflates VIU. This is a frequent and material error.
Using the entity's own cost of capital for a distressed CGU. If a CGU is significantly more risky than the overall entity (a struggling business unit in a volatile sector), the entity's overall WACC understates the risk of that specific unit. The discount rate should reflect the risks of the CGU itself, not the parent entity. Auditors engage valuation specialists to independently assess whether the rate is appropriate for the specific asset being tested.
Applying the same rate to all CGUs regardless of risk. An IT services CGU and a mining CGU within the same conglomerate have fundamentally different risk profiles. Using the same discount rate for both is not defensible.
Inconsistency between cash flows and discount rate. If cash flows are in nominal terms (including inflation), the discount rate must be a nominal rate. If cash flows are in real terms (excluding inflation), the discount rate must be a real rate. Mixing nominal cash flows with a real rate, or vice versa, produces incorrect VIU figures. This mismatch appears more often than you would expect.
Finding 5: Items Incorrectly Included in VIU Cash Flows
VIU includes cash flows from using the asset in its current condition. It excludes restructuring improvements, enhancement capex, and financing costs.
Future restructuring benefits included. A management team that has approved a cost reduction programme often includes the programme's expected savings in the VIU. This is permissible only if the restructuring has been committed and the costs have been recognised as a liability under IAS 37. A plan that has been discussed but not formally committed cannot improve the VIU. Auditors test whether restructuring provisions exist for any restructuring reflected in the forecast.
Enhancement capex included without the corresponding outflow. If the cash flow forecast assumes revenue growth requiring significant new capital investment, both the revenue benefit and the capex cost must be included. Including only the revenue upside without the associated capex requirement inflates VIU. Auditors test whether the capex schedule in the impairment model is consistent with the capital budgets approved for the CGU.
Interest and tax included in pre-tax cash flows. Some preparers include interest payments in the cash flows and then use a lower discount rate to compensate. IAS 36 requires a clean separation: pre-tax cash flows (no interest, no tax) discounted at a pre-tax rate. Any contamination of this principle requires correction.
Finding 6: Impairment Loss Allocation Errors
When an impairment loss is recognised at the CGU level, its allocation to individual assets within the CGU must follow the specific IAS 36 sequence and floor rules.
Not eliminating goodwill first. The most common allocation error is distributing the impairment loss pro rata across all assets from the start, without first allocating the full loss (or goodwill's full carrying amount) to goodwill. Auditors check that the allocation tables start with goodwill being brought to zero before any other asset is reduced.
Ignoring the individual asset floor. After eliminating goodwill, the remaining loss is distributed pro rata. But no individual asset can be reduced below the highest of its own FVLCD, its own VIU, and zero. When the pro rata formula would take an asset below this floor, the excess must be redistributed to other assets in the CGU. Preparers often run the pro rata calculation mechanically without checking the floor for each asset.
PwC's guidance specifically notes that some companies after fully impairing goodwill allocate the residual impairment solely to intangible assets such as customer lists and brands, without applying the pro rata allocation across all CGU assets. This produces incorrect carrying amounts for the remaining assets.
Finding 7: Sensitivity Disclosures That Are Not Genuinely Sensitive
IAS 36 requires sensitivity disclosures for CGUs containing significant goodwill: specifically, the change in a key assumption that would cause the carrying amount to equal the recoverable amount (reduce headroom to zero).
The disclosure is supposed to reveal how much margin of safety exists in the impairment test. When it is done correctly, it is highly informative. In practice, it is frequently constructed to show very large changes being required before impairment arises, which signals either that the business is genuinely robust or that the disclosure is not based on realistic sensitivity analysis.
Sensitivity ranges that are implausibly wide. A disclosure stating that the discount rate would need to increase by 8% before impairment arises, for a CGU with current headroom of Rs. 50 crore against a carrying amount of Rs. 5,000 crore, should invite significant scrutiny. An 8% rate increase would represent a historic extreme. The sensitivity is constructed to minimise concern rather than to provide genuine information.
Single-factor sensitivities that ignore correlated variables. Revenue growth, margin, and discount rate are correlated. An adverse scenario typically involves lower revenue, lower margins, and higher discount rates simultaneously. Showing only a single-variable sensitivity that uses the current favourable assumption for all other variables can significantly understate the true vulnerability of the CGU.
Sensitivity disclosed on a different basis than the VIU. Where the VIU uses a range of scenarios probability-weighted, the sensitivity should use the same framework. Using a simple point-estimate sensitivity when the VIU itself was probability-weighted creates inconsistency.
Finding 8: Goodwill Not Allocated or Allocated Arbitrarily
NFRA's guidance specifically asks auditors to test whether goodwill from acquisitions has been allocated to CGUs or groups of CGUs in accordance with the criteria in Ind AS 36, and whether that allocation is reviewed and reallocated when the entity reorganises its reporting structure.
Common findings:
Goodwill sitting unallocated years after acquisition. IAS 36 requires goodwill to be allocated to CGUs within a reasonable time after the business combination. Goodwill that remains unallocated or allocated to an entity-level catch-all avoids the discipline of annual CGU-level testing. Auditors demand allocation documentation at the time of acquisition or shortly thereafter.
Goodwill reallocated to avoid impairment. When an entity reorganises its segment structure and reallocates goodwill between CGUs, the reallocation basis should use relative recoverable amounts of old and new CGUs. Reallocating goodwill in ways that move it from a CGU with low headroom to one with high headroom, without a documented operational rationale, requires audit challenge.
Goodwill allocated to a level above operating segments. IAS 36 prohibits goodwill allocation to groups of CGUs larger than an operating segment before aggregation. Treating the entire entity as one CGU for goodwill testing, when the entity has multiple distinct operating segments, violates this ceiling.
Finding 9: Disclosure Deficiencies
IAS 36 has detailed disclosure requirements for impaired assets and for CGUs containing significant goodwill. These are consistently among the most deficient areas in published financial statements.
Key assumptions not entity-specific. The disclosure of key assumptions in the VIU must describe the actual assumptions management used for this specific CGU, including the specific revenue growth rate, margin assumption, and terminal growth rate. Generic statements like "management used assumptions consistent with industry benchmarks" without specifying the actual figures do not meet the standard.
No link between disclosed sensitivity and actual headroom. The sensitivity disclosure should allow a sophisticated reader to understand exactly how close the CGU is to impairment. Disclosures that state "a 1% change in discount rate would reduce headroom by Rs. 200 crore" are useful. Disclosures that say "the group performed sensitivity analysis and concluded no reasonably possible change would result in impairment" are not.
What This Means for Finance Teams and Auditors
The NFRA signal, combined with the consistent findings across global inspection bodies, points to a clear conclusion: impairment testing is not being taken seriously enough as an audit area in India. The technical framework is understood. The documentation is inadequate. The challenge of management's assumptions is insufficient. And the disclosures are too generic to be genuinely informative.
For finance teams preparing impairment analyses, the practical implications are:
Start early. The indicator assessment should be completed at the planning stage of the audit cycle, not after draft financials are prepared.
Document the backcast. Show management and auditors last year's forecast alongside this year's actuals before presenting this year's forecast. If actuals fell short, explain why the new forecast is reliable.
Be specific in disclosures. The IAS 36 sensitivity note should state the actual discount rate, the actual terminal growth rate, the specific revenue CAGR, and exactly how much headroom exists.
Separate enhancement capex from maintenance. VIU includes only maintenance capex. Enhancement capex that drives revenue growth must appear explicitly in the model as an outflow if the corresponding revenue is included as an inflow.
Ind AS 36 vs IAS 36: Audit Focus
The IAS 36 audit findings described in this post apply equally to Ind AS 36. NFRA's guidance aligns directly with IAS 36's requirements. The specific Indian dimension is:
NFRA's sector focus has included thermal power (impairment of stranded coal assets), infrastructure (impairment of under-utilised toll roads and ports), and IT services (goodwill impairment on acquisitions where revenue expectations were not met). These sectors produce the highest-risk IAS 36 audit situations in Indian practice.
The combination of NFRA's Auditor-Audit Committee Interactions guidance and its inspection programme creates a more active regulatory environment around impairment auditing than existed five years ago. Auditors who treated goodwill impairment tests as a mechanical compliance exercise are increasingly finding those tests challenged in inspection.
Dip IFRS Exam Angle
This post does not produce direct calculation questions, but the audit focus areas map directly onto exam traps.
The most commonly examined audit findings in Dip IFRS scenario questions:
Management's forecast is inconsistent with recent actual performance. The correct response identifies this as an audit risk and requires the auditor to backcast and challenge current-year assumptions.
CGU boundaries have changed between years. The correct response identifies the risk that the change masks impairment and requires documented justification.
VIU uses post-tax rate. The correct response identifies this as an error: IAS 36 requires pre-tax cash flows and a pre-tax discount rate.
Terminal value generates most of the recoverable amount. The correct response identifies the terminal growth rate as the most sensitive assumption and the key area for audit challenge.
FAQ
Can management use its approved strategic plan as the VIU forecast without any audit challenge?
No. Auditors test whether the strategic plan is realistic by comparing prior-year forecasts to actual outcomes, assessing whether the plan assumptions are consistent with external market data, and challenging any assumptions that appear optimistic relative to the company's recent performance trajectory.
What does NFRA's guidance require auditors to tell audit committees about impairment?
NFRA's Series 4 guidance sets out specific questions audit committees should be asking: how CGUs were identified, how goodwill was allocated, whether discount rates were independently assessed, how prior forecasts compared to actuals, and what the sensitivity analysis shows about headroom.
Why is the pre-tax vs post-tax rate distinction so consequential?
A post-tax WACC of 12% for a 30% tax rate entity implies a pre-tax rate of approximately 17% (12% / (1 – 0.30)). Using 12% instead of 17% understates the discount rate by 500 basis points. In a 10-year VIU with Rs. 500 crore annual cash flows, this error can overstate the VIU by several hundred crores. The materiality of this error is why it is a consistent audit focus.
How should auditors respond when management refuses to revise an impairment model that the auditor considers inadequate?
The auditor develops an independent expectation of recoverable amount, quantifies the difference, assesses whether it is material, and, if the difference is material and management refuses to adjust, the auditor considers the impact on the audit opinion. An unresolved material impairment difference would typically result in a qualified opinion or, if the misstatement is pervasive, an adverse opinion.
Is it acceptable for an entity to conclude annually that no impairment exists for goodwill without a documented VIU calculation?
No. Even when no impairment indicators exist, goodwill must be tested annually. The test requires an actual comparison of the CGU's carrying amount to its recoverable amount. A documented VIU or FVLCD calculation is required; it cannot be replaced by a narrative assertion that management believes goodwill is not impaired.
Enroll with Global Fin X
Understanding IAS 36 from the auditor's perspective is essential for anyone working in Big 4 practice, in-house finance at listed companies, or preparing for the Dip IFRS exam. The audit flags covered in this post map directly onto the exam scenarios that test IAS 36 application. Our programme covers IAS 36 across three posts with detailed lectures, worked examples, audit-focused scenario questions, and a dedicated LMS for working professionals.
Enroll Now: Dip IFRS Programme
Faculty profile: www.globalfinx.in/manikanta
This is Post 41 of the Global Fin X IFRS Series. Previous: IAS 36: CGUs, Goodwill Allocation, Impairment Testing and Reversal. Next: Post 42: IAS 37 Provisions: Recognition Criteria, Best Estimate and Discount Rate.