IFRS 3 and ASC 805 are the two dominant accounting standards governing how acquirers allocate the purchase price in a business combination. While they share a common objective — recognising acquired intangible assets at fair value — they diverge in several important areas that affect valuation practice.
Accounting Framework
IFRS 3 vs ASC 805: Purchase Price Allocation Standards
IFRS 3 vs ASC 805 for purchase price allocation. Key differences between the international and US standards for recognising intangible assets in business combinations.
| Criteria | IFRS 3 (Business Combinations) | ASC 805 (Business Combinations) |
|---|---|---|
| Issuing body | IASB (International Accounting Standards Board) | FASB (Financial Accounting Standards Board) |
| Jurisdiction | Adopted in 140+ countries including UK, EU, Australia | United States |
| Recognition test | Contractual-legal OR separable from business | Contractual-legal OR separable from business (substantially aligned) |
| Contingent consideration | Remeasured at fair value each period (P&L impact) | Classified as equity or liability; liability remeasured through P&L |
| Bargain purchase (negative goodwill) | Gain recognised immediately in P&L after reassessment | Gain recognised immediately in P&L after reassessment |
| Goodwill impairment | One-step test: compare CGU recoverable amount to carrying value | One-step test since ASU 2017-04: compare reporting unit fair value to carrying amount |
| Measurement period | Up to 12 months to finalise provisional amounts | Up to 12 months to finalise provisional amounts |
| Non-controlling interests | Choice of full goodwill or proportionate method | Full goodwill method required |
When to Use Each Approach
IFRS 3 (Business Combinations)
- Acquirer reports under IFRS (UK, EU, Australia, most international)
- Cross-border transactions where the parent reports under IFRS
- Dual-listed companies choosing IFRS as primary reporting framework
ASC 805 (Business Combinations)
- Acquirer reports under US GAAP
- SEC-registered companies
- Cross-border transactions where the US parent reports under US GAAP
Our Verdict
The standards are substantially converged for core recognition and measurement, but important differences remain in contingent consideration treatment, goodwill impairment methodology, and NCI measurement. Practitioners working on cross-border deals must understand both frameworks.
Related Glossary Terms
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