When a group has entities reporting under different accounting standards — IFRS, US GAAP, UK GAAP (FRS 102) — the figures from each entity cannot simply be aggregated. Different standards produce materially different numbers for the same underlying economic activity: the same inventory may be valued differently, the same lease may produce different P&L and balance sheet treatments, the same acquisition may result in different goodwill movements year to year. Before intercompany eliminations can run, each entity’s figures need to be restated to the group’s reporting standard.
This post covers the differences between IFRS, US GAAP, and FRS 102 that are most likely to require consolidation adjustments — with specific examples of what the difference looks like in the numbers and what the restatement involves.
The Restatement Principle
The foundation of multi-standard consolidation is establishing which framework governs the group’s consolidated financial statements. For a US-listed parent, that’s US GAAP. For a Singapore or UK parent (or any entity that applies IFRS for group reporting), that’s IFRS. For smaller UK groups, it may be FRS 102.
Every entity that reports under a different standard from the group must be restated to the group standard before its trial balance enters the consolidation. These restatements are consolidation adjustments — they change how the entity’s figures appear in the group accounts without affecting the entity’s own statutory accounts filed locally.
📌 Practical implication: A US subsidiary continues filing its local statutory accounts under US GAAP. The consolidation team prepares a restatement working paper showing the difference between the entity’s US GAAP figures and the equivalent IFRS figures, and posts consolidation journal entries to bridge the gap. The entity’s own books are untouched.
Key Differences That Require Consolidation Adjustments
1. Inventory Valuation: LIFO Not Permitted Under IFRS
IFRS (IAS 2) prohibits the use of Last-In, First-Out (LIFO) inventory valuation. US GAAP (ASC 330) still permits LIFO. In an inflationary environment, LIFO produces higher cost of goods sold and lower inventory values than FIFO — because the most recently purchased (higher cost) inventory is assumed to be sold first.
Consolidation impact A US subsidiary uses LIFO and carries inventory at $2.1M. Its LIFO reserve (the cumulative difference between LIFO and FIFO carrying values) is $700,000. Restated to FIFO for IFRS consolidation, inventory is $2.8M. The restatement also affects retained earnings (cumulative gross profit difference) and deferred tax (the tax effect of the inventory adjustment). COGS in the current period may also need restating depending on the movement in the LIFO reserve during the period.
The LIFO-to-FIFO restatement is one of the most common and most material adjustments in IFRS-reporting groups with US subsidiaries.
2. Asset Revaluation: IFRS Permits Uplifts, US GAAP Does Not
Under IFRS (IAS 16), entities may use the revaluation model for property, plant and equipment — carrying assets at fair value when an active market exists, with upward revaluations recognised in other comprehensive income. Under US GAAP (ASC 360), assets are carried at historical cost less accumulated depreciation; upward revaluation is not permitted. Impairment can only go one way.
Consolidation impact A UK subsidiary following IFRS has revalued its freehold property upward by £2.4M from historical cost to current fair value. The revaluation surplus sits in OCI and equity. For a US GAAP group, this revaluation must be reversed in the consolidation — reducing PP&E by £2.4M and eliminating the revaluation reserve from equity. Depreciation charged on the revalued amount must also be adjusted back to the historical cost basis.
3. Development Costs: Capitalise vs Expense
Under IFRS (IAS 38), development costs — costs incurred once technical feasibility has been established — must be capitalised when specific criteria are met, and then amortised over the expected useful life of the resulting intangible. Under US GAAP, most R&D is expensed as incurred (ASC 730), with an exception for certain internal-use software costs after technological feasibility is achieved.
Consolidation impact An IFRS-reporting subsidiary has capitalised £800,000 of development costs that meet the IAS 38 criteria, amortising over three years. A US GAAP group consolidating this entity must expense the £800,000 in the period incurred (and reverse any accumulated amortisation on previously capitalised amounts). The restatement reduces assets, reduces retained earnings, and increases current period expenses — potentially materially for a technology or pharmaceutical entity with significant development activity.
4. Goodwill: Impairment-Only vs Amortisation
Under IFRS (IAS 36) and US GAAP (ASC 350 for public companies), goodwill is not amortised — it is tested for impairment annually. Under FRS 102 (the UK GAAP framework used by many smaller and medium UK entities), goodwill is amortised over its useful life, subject to a maximum of ten years where the useful life cannot be reliably estimated.
Consolidation impact — IFRS group with an FRS 102 subsidiary A UK subsidiary filing under FRS 102 has £1.2M of goodwill, amortising at £120,000 per year (10-year life). For IFRS consolidation, the amortisation must be reversed — the goodwill remains at its acquisition-date carrying value less any impairment. The reversal increases both net assets and profit in the subsidiary’s consolidation contribution. An impairment test must then be performed at the group level to confirm whether the unamortised goodwill is recoverable.
5. Lease Accounting: IFRS 16 vs ASC 842 Operating Lease Treatment
Both IFRS 16 and ASC 842 require leases to be recognised on the balance sheet — the original’s description of US GAAP allowing off-balance sheet treatment is no longer accurate following ASC 842’s adoption. The difference now lies in P&L presentation for leases classified as operating leases under ASC 842.
| Treatment | IFRS 16 | ASC 842 (operating lease) |
|---|---|---|
| Balance sheet | ROU asset + lease liability (all leases >12 months) | ROU asset + lease liability (all leases >12 months) |
| P&L — expense type | Depreciation + interest (front-loaded in early years) | Single straight-line operating lease expense |
| EBITDA impact | Higher — lease cost is below EBIT (D&A + interest) | Lower — lease cost is within operating expenses, above EBIT |
Consolidation impact A US subsidiary has a five-year warehouse lease classified as an operating lease under ASC 842. Annual lease payment: $120,000. Under ASC 842, EBITDA is reduced by the full $120,000 operating lease expense. Under IFRS 16 (as restated for group purposes), the same lease produces depreciation of approximately $114,000 and interest of $18,000 in year one — EBITDA is $114,000 + $18,000 = $132,000 higher than under ASC 842 operating treatment. For groups with material operating lease portfolios in US subsidiaries, this restatement has a significant EBITDA impact.
FRS 102 and the UK Dimension
Groups with UK subsidiaries filing under FRS 102 face specific consolidation adjustments beyond the IFRS differences above. The most common:
- Goodwill amortisation reversal: As described above — FRS 102 requires amortisation; IFRS requires impairment-only testing.
- Financial instrument classification: FRS 102 uses a simplified financial instruments model (Sections 11 and 12), which differs from IFRS 9’s business model and SPPI classification approach. Certain instruments classified and measured differently under FRS 102 need to be restated to IFRS 9 for group reporting.
- Holiday pay accrual: FRS 102 explicitly requires accrual of accumulated untaken holiday pay as a liability. IFRS requires a similar accrual under IAS 19 but the application guidance differs slightly. For entities where this was not consistently applied, a restatement may be needed.
- Investment property: FRS 102 permits investment property to be carried at fair value through profit or loss (similar to IAS 40’s fair value model), but the criteria and disclosures differ. For entities using different models, alignment to the group policy is required.
Managing Multi-Standard Consolidation in Practice
For each entity reporting under a non-group standard, the consolidation process should include:
- A policy difference register: A documented comparison of the entity’s local standard versus the group standard, covering every area where a material difference exists. This is prepared once when the entity is first consolidated and updated when either standard changes.
- Restatement working papers: For each identified difference, a working paper showing the entity’s local figures, the adjustment required, and the restated figures. These should be reviewed and signed off by a qualified accountant familiar with both standards.
- Deferred tax on restatements: Each restatement that changes the carrying value of an asset or liability relative to its tax base creates a temporary difference requiring deferred tax recognition. The deferred tax effect must be calculated and posted as part of the restatement, not omitted.
- Consistent application period to period: Restatement policies should be applied identically each period. Changes in restatement methodology create prior-period comparability issues that complicate trend analysis and raise audit questions.
💡 Convergence update: IFRS 15 and ASC 606 (revenue recognition) were deliberately converged by the IASB and FASB — the underlying five-step model is identical, with differences only in specific application guidance (primarily around licences of intellectual property and certain contract modifications). Revenue recognition differences between IFRS and US GAAP are narrower than they were pre-2018, though application judgements still vary.
BrizoConsol supports multi-standard reporting — entities can submit trial balances under their local accounting standard, with consolidation adjustments posted centrally to bring each entity to the group reporting standard before eliminations and group entries run. Learn more or see it in action →