Skip to main content

Calculation of Risk Weight

No: 44047144 Date(g): 27/12/2022 | Date(h): 4/6/1444 Status: In-Force

Effective from Jan 01 2023 - Dec 31 2022
To view other versions open the versions tab on the right

22.23The formulation of the SEC-IRBA is expressed as follows, where:
 
 (1) is the capital requirement per unit of securitization exposure under the SEC-IRBA, which is a function of three variables;
 
 (2)The constant e is the base of the natural logarithm (which equals 2.71828);
 
 (3)The variable a is defined as -(1 / (p * KIRB));
 
 (4)The variable u is defined as D - KIRB; and
 
 (5)The variable l is defined as the maximum of A - KIRB and zero.
 
  
 
22.24The risk weight assigned to a securitization exposure when applying the SEC- IRBA is calculated as follows:
 
 (1)When D for a securitization exposure is less than or equal to KIRB, the exposure must be assigned a risk weight of 1250%.
 
 (2)When A for a securitization exposure is greater than or equal to KIRB, the risk weight of the exposure, expressed as a percentage, would equal times 12.5.
 
 (3)When A is less than KIRB and D is greater than KIRB the applicable risk weight is a weighted average of 1250% and 12.5 times  according to the following formula:
 
  
 
22.25The risk weight for market risk hedges such as currency or interest rate swaps will be inferred from a securitization exposure that is pari passu to the swaps or, if such an exposure does not exist, from the next subordinated tranche.
 
22.26The resulting risk weight is subject to a floor risk weight of 15%.