Shifting from the incurred to the expected credit loss model and stock price crash risk

Using a difference-in-differences (DID) design, this study examines the effect of shifting from the incurred credit loss model (ICL model) to the expected credit loss model (ECL model) on banks’ future stock price crash risk. We find that switching to the ECL model decreases the stock price crash risk of commercial banks. Inspired by Onali et al. (2021), we proceed with cross-sectional tests from the perspectives of opportunistic incentives, information environments, and compliance costs and find that the effect is more pronounced for (i) banks with less opportunistic incentives, proxied by state-owned property rights and managerial ownership; (ii) banks with opaque internal and external information environments, proxied by weak internal control, weak board governance, low analyst coverage, and short auditor tenure; and (iii) banks with lower implementation costs, proxied by less day-one impact and higher levels of accounting conservatism. Channel analyses show that banks increase their asset impairment provisions and the timeliness of loan loss recognition, and there is an increase in the value relevance of earnings and bank efficiency after the adoption of the ECL model. Overall, our evidence suggests that the flexibility of principle-based accounting standards influences banks’ stock price crash risk and provides implications that could be helpful to regulators and standard setters.