meta_id 3273678

On June 26, 2026, the European Central Bank (ECB) published version 2.0 of the ECB Guide on Materiality Assessment (EGMA), which supersedes the initial guidance issued on September 17, 2017. The update removes all sections, chapters, and references previously applicable to the Advanced Counterparty Credit Risk Valuation Approach (A-CVA), reflecting regulatory changes that took effect on January 1, 2025. The EGMA provides significant institutions under ECB direct supervision with guidance on assessing the materiality of extensions and changes to internal model method (IMM) models used for counterparty credit risk (CCR). The guide applies to institutions calculating capital requirements for over-the-counter derivative contracts and securities financing transactions. The update aligns with the Capital Requirements Regulation (CRR) framework, which mandates competent authority approval for material model extensions and changes. The guide establishes a two-category classification system: extensions and changes requiring ECB investigation, and other extensions and changes subject to notification. Quantitative thresholds for CCR portfolio changes are set at 5 percent or more in risk-weighted assets (RWA), with certain extensions and changes automatically classified as material, including those reducing overall RWA by at least 1 percent. The EGMA introduces qualitative and quantitative assessment criteria specific to IMM models, distinguishing them from internal ratings-based approach standards. The guide emphasizes that institutions must not split extensions or changes to artificially lower materiality classifications, nor merge separate changes to reduce assessed impact. Institutions should review the updated guidance to ensure compliance with the revised materiality assessment framework. The EGMA applies to all future IMM model extensions and changes, with institutions required to submit comprehensive documentation including technical specifications, quantitative impact analyses, and validation reports for extensions and changes classified as requiring investigation. REFERENCES: European Central Bank. (2026). ECB Guide on Materiality Assessment for IMM Model Extensions and Changes. Retrieved from https://www.ecb.europa.eu