1.   Where an institution uses the Standardised Approach under Chapter 2 for the calculation of risk-weighted exposure amounts for the exposure class to which the securitised exposures would be assigned under Article 112, it shall calculate the risk-weighted exposure amount for a securitisation position in accordance with Articles 245, 246 and 251 to 258. Institutions using the Standardised Approach may also use the Internal Assessment Approach where this has been permitted under Article 259(3).

2.   Where an institution uses the IRB Approach under Chapter 3 for the calculation of risk-weighted exposures amounts for the exposure class to which the securitised exposure would be assigned under Article 147 it shall calculate the risk-weighted exposure amount in accordance with Articles 245, 246 and 259 to 266.

Except for the Internal Assessment Approach, where the IRB Approach is used only for a part of the securitised exposures underlying a securitisation, the institution shall use the approach corresponding to the predominant share of securitised exposures underlying this securitisation.