EBA欧洲银行-GL10_143页_1mb

Summary of Guidelines on the Implementation, Validation and Assessment of AMA and IRB Approaches

Core Content

These guidelines, issued by the Committee of European Banking Supervisors (CEBS), provide a common framework for European supervisory authorities to assess and approve the use of Advanced Measurement Approach (AMA) and Internal Ratings Based (IRB) approaches by financial institutions for regulatory capital requirements. They are based on the Capital Requirements Directive (CRD) and aim to ensure consistency, transparency, and soundness in the application of these advanced risk management methodologies.

Main Points

1. Purpose and Scope

• The guidelines aim to harmonize supervisory practices across the EU.
• They elaborate on the CRD Articles and Annexes, particularly for AMA and IRB approaches.
• They do not cover the Standardised Approach for credit risk but provide some guidance on the Basic Indicator Approach (BIA) and Standardised Approach (SAA) for operational risk.
• They are not exhaustive and allow for national supervisory authorities to impose stricter requirements.

2. Key Areas Covered

• Cooperation Procedures: Supervisory authorities must collaborate when assessing applications from cross-border groups.
• Approval Process: A structured and formal process is required for the approval of AMA and IRB approaches.
• Post-Approval Process: Ongoing monitoring and validation are necessary after approval.
• Validation and Assessment: Guidelines on how to validate internal risk models and parameters.
• Internal Governance: Role of management, credit risk control units, and internal audit in risk management.
• Data Requirements: Emphasis on data accuracy, completeness, and consistency with accounting data.
• Risk Parameters: Definitions and methodologies for Probability of Default (PD), Loss Given Default (LGD), and Conversion Factors (CF).
• Operational Risk: Specific guidance on AMA and simpler approaches for operational risk.

3. Implementation Considerations

• The guidelines do not distinguish between Foundation IRB (F-IRB) and Advanced IRB (A-IRB) approaches.
• Institutions can use their own estimates for PD and LGD in retail exposure classes starting from 2007, with full implementation for non-retail exposures from 2008.
• The use of insurance and other risk transfer mechanisms is still under discussion and not fully addressed in the guidelines.
• Institutions that have already developed systems before the guidelines were published may be given a grace period to adapt.

4. Application and Decision Process

• A minimum set of documents is required for applications, with the possibility of additional documents.
• The approval process must be completed within six months of receiving a complete application.
• The guidelines emphasize the importance of a cooperative and consultative framework between consolidating and host supervisors.

5. Flexibility and Interpretation

• The guidelines provide examples and principles, allowing institutions to use alternative solutions that meet or exceed supervisory expectations.
• Where the CRD is directly quoted, the term "shall" is used, indicating mandatory requirements.
• CEBS encourages ongoing dialogue with industry stakeholders to refine the guidelines as needed.

Key Information

• Target Audience: National supervisory authorities and financial institutions applying for AMA or IRB approaches.
• Scope: Applies to all institutions, including cross-border groups and their subsidiaries.
• Validation Focus: Emphasizes the importance of internal validation, benchmarking, and backtesting.
• Data Requirements: Data must be accurate, complete, and representative for model development and validation.
• Regulatory Context: These guidelines are based on the CRD and are subject to review and maintenance as industry practices evolve.

Annexes and Supporting Documents

• Annexes I and II: Provide an illustration of the pre-application and approval process.
• Annexes III to V: Cover additional technical aspects and validation criteria.
• Feedback Documents: Available on the CEBS website, showing industry responses and CEBS feedback.

Conclusion

The guidelines aim to streamline the approval process, reduce inconsistencies, and promote a level playing field for institutions using AMA and IRB approaches. They reflect CEBS' current understanding and expectations, while leaving room for national discretion and future refinements based on evolving practices and regulatory developments.