Determinants of credit risk on residential mortgage loans in South Africa

Abstract

Residential mortgages are an important asset class for banks as these assets provide the majority of bank’s income. By the nature of issuing loans to customers, this asset class also presents the greatest risk to the banks and as a result, banks need to constantly evaluate and review credit risk in order to ensure dynamic response strategies that curb losses and achieve sustainable profits. This study aims to investigate factors influencing credit risk on residential mortgage loans in South Africa. A regression analysis was conducted to capture the influence of both macroeconomic and bank specific factors on loans that have been in arrears for less than 89 days and on loans that have been in default for more than 90 days; using monthly data from an undisclosed bank over a period of eight years, 2010 to 2018. The results show that Housing Price Index, Unemployment, Household Disposable Income, Bank’s Capitalization and Operational Efficiency are the only significant determinants for non-performing residential mortgage loans that are less than 89 days. Credit Quality, Inflation, Unemployment, Household Disposable Income, Bank’s Capitalization, Operational Efficiency and are the main determinants of the non-performing residential mortgage loans greater than 90 days