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AI Summary of Article 149 Conditions to revert to the use of less sophisticated approaches
The IRB Approach is integral for institutions managing specific exposure classes. A shift to the Standardised Approach requires demonstrable justification to the competent authority, ensuring it is not pursued for regulatory arbitrage and does not jeopardise the institution's solvency or risk management capabilities. Prior consent from the competent authority is also mandatory.
Similarly, institutions with permissions to use their own estimates for LGDs and conversion factors must adhere to stringent protocols before reverting to standard values. This is contingent upon satisfying the competent authority regarding necessity, risk management, and obtaining prior approval.
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Article 149 Conditions to revert to the use of less sophisticated approaches
1. An institution that uses the IRB Approach for a particular exposure class or type of exposure shall not stop using that approach and use instead the Standardised Approach for the calculation of risk-weighted exposure amounts unless the following conditions are met:
(a)the institution has demonstrated to the satisfaction of the competent authority that the use of the Standardised Approach is not made with a view to engaging in regulatory arbitrage, including by unduly reducing the own funds requirements of the institution, is necessary on the basis of the nature and complexity of the institution's total exposures of that type and would not have a material adverse impact on the solvency of the institution or its ability to manage risk effectively;
(b) the institution has received the prior permission of the competent authority.