Article 151
Treatment by exposure class
1.
The risk-weighted exposure amounts for credit risk for exposures belonging to one of the exposure classes referred to in Article 147(2), point (a), point (aa)(i) or (ii), point (b), point (c)(i), (ii) or (iii), point (d)(i), (ii), (iii) or (iv) or point (g), shall, unless those exposures are deducted from own funds or are subject to the treatment set out in Article 72e(5), first subparagraph, be calculated in accordance with Sub-section 2.
2.
The risk-weighted exposure amounts for dilution risk for purchased receivables shall be calculated in accordance with Article 157. Where an institution has full recourse to the seller of purchased receivables for default risk and for dilution risk, the provisions of this Article and Article 152 and Article 158(1) to (4) in relation to purchased receivables shall not apply and the exposure shall be treated as a collateralised exposure.
3.
The calculation of risk-weighted exposure amounts for credit risk and dilution risk shall be based on the relevant parameters associated with the exposure in question. These shall include PD, LGD, maturity (hereinafter referred to as ‘M’) and exposure value of the exposure. PD and LGD may be considered separately or jointly, in accordance with Section 4.
5.
6.
For exposures belonging to the exposure classes referred to in points (a) to (d) of Article 147(2), institutions shall provide their own estimates of PDs in accordance with Article 143 and Section 6.
7.
For retail exposures, institutions shall provide own estimates of LGD, and IRB-CCF where applicable pursuant to Article 166(8) and (8b), in accordance with Article 143 and Section 6. Institutions shall use SA-CCFs where Article 166(8) and (8b) do not allow for the use of IRB-CCF.
8.
For the following exposures, institutions shall apply the LGD values set out in Article 161(1) and SA-CCFs in accordance with Article 166(8), (8a) and (8b):
(a)
exposures assigned to the exposure class referred to in Article 147(2), point (b);
(b)
exposures to financial sector entities other than those referred to in point (a) of this subparagraph;
(c)
exposures to large corporates not assigned to the exposure class referred to in Article 147(2), point (c)(ii).
For exposures belonging to the exposure classes referred to in Article 147(2), point (a), point (aa)(i) or (ii) or point (c)(i), (ii) or (iii), except for the exposures referred to in the first subparagraph of this paragraph, institutions shall apply the LGD values set out in Article 161(1) and the SA-CCFs in accordance with Article 166(8), (8a) and (8b), unless they have been permitted to use their own estimates of LGD and IRB-CCF for those exposures in accordance with paragraph 9 of this Article.
9.
For the exposures referred to in paragraph 8, second subparagraph, of this Article, the competent authority shall permit institutions to use own estimates of LGD, and IRB-CCF where applicable pursuant to Article 166(8) and (8b), in accordance with Article 143 and Section 6.
10.
The risk-weighted exposure amounts for securitised exposures and for exposures belonging to the exposure class referred to in point (f) of Article 147(2) shall be calculated in accordance with Chapter 5.
11.
For exposures in the form of shares or units in a CIU belonging to the exposure class referred to in Article 147(2), point (ea), institutions shall apply the treatment set out in Article 152, unless those exposures are deducted from own funds or are subject to the treatment set out in Article 72e(5), first subparagraph.