The biggest challenge credit practitioners face when operationalizing IFRS 9 into an auditable ECL model is typically the input that carries the most weight: PDs. It drives the ECL calculation and draws scrutiny for three key reasons: Circularity. The standard route starts with IRB estimates, then adjusts and validates them internally. Though technically sound, it […] The post IFRS 9 Implementation Guide: Solving the PD Input Problem for Unrated Borrowers appeared first on Credit Benchmark .