Note 12 - Credit risk exposure for each internal risk rating

The Bank uses a special classification system for monitoring credit risk in the portfolio. Risk classification is based on each individual exposure's probability of default. In the table below this classification is collated with corresponding rating classes at Moody’s. Historical default data are Parent Bank figures showing the default ratio (DR) per credit quality step. The figures are an unweighted average of customers with normal scores in the period 2010-2016. Collateral cover represents the expected realisation value (RE value) of underlying collaterals. The value are determined using fixed models, and actual realisation value are validated to test their reliability of the model. In accordance with the capital requirements regulations the estimates are downturn estimates. Based on the collateral cover  (RE value / EAD) the exposure is classified to one of seven classes, the best of which has a collateral cover above 120 per cent, and the lowest has a collateral cover below 20 per cent.

  Probability of default          Collateral cover
Credit quality step From To Moody's Historical default Default 2015   Collateral class Lower limit Upper limit
                   
A 0.00 % 0.10 % Aaa-A3 0.02 % 0.01 %   1 120  
B 0.10 % 0.25 % Baa1-Baa2 0.07 % 0.05 %   2 100 120
C 0.25 % 0.50 % Baa3 0.16 % 0.10 %   3 80 100
D 0.50 % 0.75 % Ba1 0.41 % 0.24 %   4 60 80
E 0.75 % 1.25 % Ba2 0.58 % 0.41 %   5 40 60
F 1.25 % 2.50 %   1.35 % 1.01 %   6 20 40
G 2.50 % 5.00 % Ba2-B1 3.12 % 1.50 %   7 0 20
H 5.00 % 10.00% B1-B2 6.04 % 3.85 %        
I 10.00% 99.99% B3-Caa3 16.22 % 11.27 %        
J Default                
K Written down               
 The Bank's exposures are classified into risk groups based on credit quality step.
Credit quality step Risk groups
 A - C 
Lowest risk
 D - E 
Low risk
 F - G 
Medium risk
 H 
High risk
 I 
Highest risk
 J - K 
Default and written down
Parent Bank Averaged unhedged exposure Total exposure Averaged unhedged exposure Total exposure
(NOK million) 31 Dec 16 31 Dec 16 31 Dec 15 31 Dec 15
Lowest risk 12.3 % 74,780 9.0 % 60,945
Low risk 21.3 % 13,594 12.8 % 21,757
Medium risk 15.7 % 19,319 14.7 % 19,305
High risk 15.5 % 2,659 21.1 % 3,708
Highest risk 11.3 % 1,922 11.6 % 1,680
Default and written down 40.4 % 1,627 31.1 % 558
Total   113,900   107,953
         
Group Averaged unhedged exposure Total exposure Averaged unhedged exposure Total exposure
(NOK million) 31 Dec 16 31 Dec 16 31 Dec 15 31 Dec 15
Lowest risk 12.2 % 75,166 9.0 % 61,202
Low risk 19.2 % 15,033 12.4 % 22,821
Medium risk 14.2 % 21,339 14.0 % 20,925
High risk 12.3 % 3,335 19.8 % 4,222
Highest risk 8.3 % 2,607 15.1 % 2,285
Default and written down 40.4 % 1,627 30.7 % 604
Total   119,107   112,060
The realisation value of furnished collateral is determined such that they, on a conservative assessment, reflect the presumed realisation value in an economic downturn.

Annual report and notes

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