Key Points
- IFRS 3 mandates the acquisition method for all business combinations; pooling of interests is prohibited for reporting periods beginning on or after 31 March 2004.
- The acquisition method requires a purchase price allocation at fair value, producing goodwill that must be tested annually for impairment under IAS 36.
- Pooling of interests carried forward historical book values, so no goodwill arose and post-combination earnings appeared higher.
- Use the acquisition method whenever you account for a new business combination under IFRS.
Side-by-side comparison
| Dimension | Acquisition method (IFRS 3) | Pooling of interests (eliminated) |
|---|---|---|
| Status under IFRS | Mandatory since 2004 for all business combinations | Prohibited. No new pooling permitted under IFRS. |
| Asset and liability measurement | Fair value at the acquisition date (IFRS 3.18) | Historical book values of both combining entities carried forward |
| Goodwill | Recognised as the excess of consideration over fair value of net identifiable assets (IFRS 3.32) | Not recognised. No purchase price allocation performed. |
| Pre-combination results | Only the acquiree's results from the acquisition date onward are consolidated | Both entities' full-year results were combined, even if the combination occurred mid-year |
| Acquisition costs | Expensed as incurred (IFRS 3.53) | Included in the combined entity's expenses but no separate treatment existed |
| Subsequent accounting | Annual goodwill impairment testing under IAS 36; intangible assets amortised over useful lives | No goodwill to test; combined book values depreciated or amortised on existing schedules |
Decision rule: Apply the acquisition method for every business combination under IFRS. Pooling of interests is not available. If the transaction involves entities under common control, IFRS 3.2(c) scopes it out entirely, and the entity selects its own policy (often predecessor values), but that policy is not pooling of interests as previously defined.
What is IFRS 3 Acquisition Method vs Pooling of Interests?
The distinction still surfaces in two situations. First, entities that completed combinations before 2004 may carry legacy pooling-of-interests balances. IFRS 3 (2004 and 2008 revisions) applied prospectively, so combinations accounted for under pooling before the effective date were not restated. The combined balance sheet from those older transactions contains no goodwill and no fair value uplift on identifiable assets. If the engagement team encounters a pre-2004 subsidiary with no goodwill on the consolidated balance sheet, it must verify whether the original combination used pooling and confirm that IFRS 3's prospective application justifies the absence of goodwill (IFRS 3.67-68).
Second, the distinction appears in cross-border groups where a subsidiary reports under a local GAAP that still permits or requires a pooling-like method for common-control transactions. German HGB, for example, allows a carrying-amount method (Buchwertmethode) for certain reorganisations. The group engagement team must ensure that the IFRS consolidation applies the acquisition method even when the local statutory accounts used a different approach. ISA 600.A38 requires understanding the group structure and the accounting frameworks applied at each component.
Worked example: Schafer Elektrotechnik AG
Client: German electronics manufacturer, FY2025, revenue EUR 310M, IFRS reporter. Schafer acquires 100% of Prestel Sensorik GmbH (a sensor manufacturer with book value of net assets at EUR 18M) on 1 July 2025 for EUR 29M cash. An independent valuer identifies customer relationships at EUR 3.8M and proprietary sensor technology at EUR 2.4M. The deferred tax liability on fair value uplifts at 30% German corporate tax rate is EUR 1.86M.
Step 1 — Measure identifiable net assets at fair value
Book value EUR 18M plus customer relationships EUR 3.8M plus sensor technology EUR 2.4M less deferred tax liability EUR 1.86M equals fair value of identifiable net assets of EUR 22.34M.
Documentation note: file the independent valuation report for each intangible, record the valuation methods (income approach for customer relationships, relief-from-royalty for sensor technology), and calculate the deferred tax liability per IAS 12.66.
Step 2 — Calculate goodwill
Consideration of EUR 29M less fair value of identifiable net assets of EUR 22.34M equals goodwill of EUR 6.66M per IFRS 3.32. Allocate this goodwill to the sensor division CGU per IAS 36.80.
Documentation note: record the goodwill calculation, the CGU allocation rationale, and confirm that annual impairment testing is scheduled per IAS 36.96.
Step 3 — Consolidate from acquisition date
Schafer includes Prestel's results from 1 July 2025 onward only. Pre-acquisition profits stay with the selling shareholders.
Documentation note: confirm the acquisition date per IFRS 3.8-9, and verify that revenue and expenses before 1 July 2025 are excluded from the consolidated income statement.
Under pooling of interests (hypothetical, not permitted)
Schafer would carry forward Prestel's net assets at book value of EUR 18M. No customer relationships or sensor technology would be separately recognised. No goodwill would arise. Prestel's full-year results (January to December 2025) would be combined with Schafer's results, making consolidated revenue and profit appear higher for the year. The EUR 29M payment would reduce equity rather than create an asset.
Consequence of confusing the two: If the engagement team failed to apply the acquisition method (perhaps because the German statutory accounts used the Buchwertmethode for a parallel HGB filing), the IFRS consolidated balance sheet would omit EUR 6.66M of goodwill, EUR 6.2M of intangible assets, and EUR 1.86M of deferred tax liabilities. Post-combination earnings would be overstated by the missing amortisation on the intangibles.
Why it matters in practice
- Teams working on groups with pre-2004 combinations sometimes assume that all legacy pooling balances should be restated to the acquisition method. IFRS 3.67-68 applied the standard prospectively. Restating a 2002 combination would require fair values that may be impossible to determine reliably two decades later. The correct approach is to leave the legacy balances in place and document the basis for doing so.
- On cross-border engagements, practitioners occasionally carry forward the local GAAP carrying-amount treatment into the IFRS consolidation for common-control reorganisations, treating it as pooling by another name. IFRS 3.2(c) scopes out common-control transactions, but this does not mean pooling applies. The entity must select and disclose an accounting policy. ISA 600.A38 requires the group engagement team to verify that the IFRS consolidation applies a policy consistent with the IFRS framework, not the local statutory approach.
Related terms
Frequently asked questions
Can I still use pooling of interests for any transaction under IFRS?
No. IFRS 3.4-5 mandates the acquisition method for every business combination within its scope. The IASB eliminated pooling because it allowed entities to avoid recognising goodwill and fair value adjustments, making post-combination performance appear stronger than the economics warranted. IFRS 3.BC27-BC37 documents the Board's reasoning.
What method applies to common-control combinations that IFRS 3 scopes out?
IFRS provides no standard for common-control transactions. The entity selects an accounting policy under IAS 8.10-12, choosing between predecessor values (carrying amounts from the controlling party's consolidated accounts) or applying the acquisition method by analogy. The chosen policy must be applied consistently and disclosed. The IASB issued a project update in 2024 but has not finalised a standard.
Do any local GAAPs still allow pooling of interests?
Some local frameworks permit a carrying-amount method for specific reorganisations (HGB in Germany, RJ in the Netherlands for certain common-control transactions). These methods resemble pooling but operate under different scoping rules. For IFRS reporters, these local treatments do not override the IFRS 3 requirement. Auditors must verify that the IFRS consolidation adjustments apply the acquisition method regardless of local statutory treatment.