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Exploring the mismatch between credit ratings and loss-given-default: A credit risk approach

Baofeng Shi, Guotai Chi and Weiping Li

Economic Modelling, 2020, vol. 85, issue C, 420-428

Abstract: It is commonly observed that high grade loans with better ratings are often associated with low recoveries if they default (i.e. with relatively high loss-given-default (LGD)). To address the mismatch problem, this paper proposes a credit risk approach by minimizing LGD for higher rated loans as a risk-rating matching standard in the sense that the decreasing LGD from creditors’ perspective is associated with higher credit rating for the borrower. This standard forces customers’ credit rating of each grade to be optimally determined in correspondence to its LGD, which means the LGD of high grade loans tends to be low. The approach is then tested using three credit datasets from China, i.e. credit data from 2044 farmers, 2157 small private businesses and 3111 SMEs. The empirical results show that the proposed approach indeed guides the way to solve the mismatch phenomenon between credit ratings and LGDs in the existing credit rating literature. By optimally determining credit ratings, the findings derived from this paper help provide a valuable reference for bankers, and bond investors to manage their credit risk.

Keywords: Credit rating; Loss-given-default; Credit rating matching; Microfinance loan; China (search for similar items in EconPapers)
JEL-codes: G24 G32 C61 (search for similar items in EconPapers)
Date: 2020
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DOI: 10.1016/j.econmod.2019.11.032

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