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Version status: Amended | Document consolidation status: Updated to reflect all known changes
Version date: 28 June 2021 - onwards
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Article 452 Use of the IRB Approach to credit risk

Institutions calculating the risk-weighted exposure amounts under the IRB Approach to credit risk shall disclose the following information:

(a) the competent authority's permission of the approach or approved transition;

(b) for each exposure class referred to in Article 147, the percentage of the total exposure value of each exposure class subject to the Standardised Approach laid down in Chapter 2 of Title II of Part Three or to the IRB Approach laid down in Chapter 3 of Title II of Part Three, as well as the part of each exposure class subject to a roll-out plan; where institutions have received permission to use own LGDs and conversion factors for the calculation of risk-weighted exposure amounts, they shall disclose separately the percentage of the total exposure value of each exposure class subject to that permission;

(c) the control mechanisms for rating systems at the different stages of model development, controls and changes, which shall include information on:

(i) the relati

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