1. The Historical Incurred Loss Model Failure
Before the global financial crisis, accounting standards used an “incurred loss” model (IAS 39 / ASC 320). Under that model, an entity could only recognize a bad debt provision after a specific credit loss event had occurred (such as a missed payment or default). This approach was heavily criticized for delaying the recognition of credit losses during economic downturns.
2. The Modern Forward-Looking Expected Credit Loss (ECL) Framework
Modern standards (IFRS 9 and US GAAP ASC 326 CECL) require entities to recognize a provision for credit losses based on forward-looking expectations, even for newly acquired or healthy financial assets. IFRS 9 uses a three-stage model to track changes in credit risk:
┌────────────────────────────────────────────────────────────────────────┐
│ IFRS 9 Three-Stage ECL Framework │
├───────────────────────────┬───────────────────────────┬────────────────┤
│ Stage 1: Low Credit Risk │ Stage 2: Significant Risk │ Stage 3: Credit│
│ (Performing) │ Increase (Underperform.) │ Impaired │
├───────────────────────────┼───────────────────────────┼────────────────┤
│ Recognize 12-month ECL │ Recognize lifetime ECL │ Recognize life-│
│ (losses from defaults │ (losses from all possible │ time ECL. Inter-│
│ possible in next 12 mos). │ defaults over asset life).│ est calculated │
│ Interest on gross asset. │ Interest on gross asset. │ on net asset. │
└───────────────────────────┴───────────────────────────┴────────────────┘
3. The US GAAP CECL Model Contrast
Under the US GAAP Current Expected Credit Losses (CECL) model, the three-stage structure is omitted. Instead, entities must estimate and recognize lifetime expected credit losses on Day 1 for all financial assets measured at amortized cost, regardless of whether a change in credit risk has occurred since initial recognition.