The global financial crisis has induced a series of failures of most conventional banks. This study investigates the main sources of banking fragility. We use a sample of 49 banks operating in the MENA region over the period 2006â2013 to analyze the relationship between credit risk and liquidity risk and its impact on bank stability. Our results show that credit risk and liquidity risk do not have an economically meaningful reciprocal contemporaneous or time-lagged relationship. However, both risks separately influence bank stability and their interaction contributes to bank instability. These findings provide bank managers with more understanding of bank risk and serve as an underpinning for recent regulatory efforts aimed at strengthening the joint risk management of liquidity and credit risks. Keywords: Credit risk, Liquidity risk, Bank stability, MENA region, JEL Classification: F3, G21, O16, 05

Purpose: The purpose of this paper is to examine the relationship between information asymmetry and the quality of the external audit in the Tunisian capital market.Design/methodology/approach: The paper uses panel data methodology.Findings: The results show that the bid‐ask, a market‐based measure of information asymmetry, is negatively related to the employment of an industry specialist and big auditors; and positively related to audit firm tenure. However, further tests refine those conclusions, in that the positive association between tenure and bids‐ask spread differs between specialist and non‐specialist auditors and between Big 4 and non‐Big 4 auditors. Specifically, the paper finds that bid‐ask spreads is increasing in tenure for clients of non‐specialist and clients of non‐Big 4.Research limitations/implications: The difficulties in specifying correct models for determining the audit quality, the research analyze the auditor's quality such as big auditor, tenure, and specialist. The paper leaves this and other issues for future research.Originality/value: Analyzing the effect of auditor's quality on information asymmetry and bid‐ask spreads is an emerging economy such as Tunisia is very appealing because earnings quality is the most important quality investors look for. And this research makes a link between two important areas of auditing and finance.

Purpose: This paper aims to identify and analyze the similarities and differences of the liquidity risk determinants within conventional and Islamic banks. Design/methodology/approach: This study uses a dynamic panel data approach to examine the relationship between liquidity risk and a set of bank-specific and macroeconomic factors during 2005–2015, by selecting 27 Islamic banks and 49 conventional ones operating in the MENA region. More specifically, the dynamic two-step generalized method of moment estimator technique introduced by Arellano and Bond (1991) is applied. Findings: The results suggest that the set of bank-specific variables influences the liquidity risk of both banking systems, while macroeconomic factors determine the liquidity risk of conventional banks. Islamic banks are not affected by macroeconomic determinants. Practical implications: The research facilitates to the academicians, practitioners and bankers to have an alluded picture about liquidity risk determinants and their management. The findings can be used by bankers’ policy decision-makers to improve and enhance their consideration for liquidity risk management in both banking systems. Indeed, the study makes them aware to manage liquidity risk differently between conventional and Islamic banks, as the results reveal different liquidity risk determinants. Originality/value: Compared to the abundant studies on the determinants of credit risk, researchers have not sufficiently addressed the factors influencing liquidity risk. Moreover, none of these few research studies has discussed and compared liquidity risk determinants within both banking systems operating in the Middle East and North Africa (MENA) region. This leads us to identify the similarities and differences between conventional and Islamic banks in the MENA region in respect of systematic and unsystematic determinants of the liquidity risk. The value is attributed to the increasing differentiation between Islamic and conventional banks. Islamic banks are characterized with a different liquidity structure distinguishing them from their conventional counterparts.

The paper investigated the relationship between corporate tax optimization and the firm's value in the Tunisian context over an 11 year period. The empirical results revealed that tax optimization, accruals and investment increased the firm's value. After dividing the sample between listed and non-listed firms, we concluded that, compared to non-listed firms, the listed firms were better able to optimize tax through adopting a tax policy. Our findings help decision makers, researchers and practices to better understand the role of tax optimization in the management of firms and, also, in their performance

Purpose: The aim of this study is to investigate the effect of web - based disclosure on the cost of debt for the MENA region setting. Design/methodology/approach: The sample of this paper consists of 237 MENA listed non-financial companies for the year 2017. Multiple regression models were used to examine the impact of online disclosure on the cost of debt. Content analysis is used to measure the extent of web-based disclosure. Findings: The results reveal that there is a negative and significant association between the web-based disclosure and the company’s cost of debt. These results support the hypothesis of the economic utility of the information disclosed on the website for creditors in this region. Practical implications: The results of the study have important implications for managers in the MENA region. It is necessary for managers to improve the company’s transparency through web-based disclosure. The companies must benefit from the different technologies offered by the Internet in order to offer to the creditors unlimited access to up to date information. In fact, web-based disclosure may mitigate the information asymmetry, the uncertainty of creditors and, consequently, reduces the cost of debt. 10; 10;Moreover, the results of the study provide empirical evidence for the advantages of voluntary web-based disclosure. The results highlight the importance to companies and regulators of understanding the benefits of using the website as a means of information disclosure. The regulators in MENA countries can rely on these results to establish suitable policies to improve the quality of web-based disclosure. The regulators need also to put in rules in relation to the online disclosure. In fact, an understanding of web-based disclosure is important for regulators and companies. Given the positive effect of online disclosure (the reduction of the cost of debt), knowledge about the economic consequences of web-based disclosure would enable companies in the MENA region to optimize their online disclosure policies. Originality/value: This study, added to the existing literature by examining the consequences of online disclosure practices in MENA countries. Most previous studies conducted in this region were limited to analyzing the determinants of the company’s web-based disclosure. This paper would extend the literature on the online disclosure practices by investigating the association between these practices and the cost of debt in a developing economics: the MENA region. Previous studies were limited to testing this association only in developed countries.

Purpose: The aim of this study is to conduct a comparative analysis between Islamic and conventional banks in terms of whether Islamic banks was more or less resilient/risky than conventional counterparts to the pandemic shock. It also examines the role of capital in improving the performance and stability within the two banking systems.Design/methodology/approach: This study uses 82 banks from MENA (Middle East and North Africa) region for periods across 2011–2020, and employs a dynamic panel data approach to examine the resilience within both banking systems during the Covid-19 pandemic.Findings: The results show that the Covid-19 pandemic has a negative impact on conventional banks' stability. However, Islamic banks performed better and were less risky than conventional ones. Banks with high-quality capital are more effective at controlling their risks and improving their performance during the pandemic.Practical implications: The results offer important financial observations and policy implications to many stakeholders engaging with banks. Actually, the findings of this study facilitate to the stakeholders and bankers to have an alluded picture about determinants of risk and performance. The results can be used by bankers’ policy decision-makers to improve and enhance their consideration for risk management, taking into consideration the type of banking systems.Originality/value: Compared to the various studies on the stability of Islamic and conventional banks, researchers have not sufficiently addressed the effect of the Covid-19 pandemic on risk and performance. Moreover, none of these studies has examined if Islamic banks was more or less resilient/risky than conventional counterparts to the pandemic shock. This leads the authors to identify the similarities and differences between two types of banks in the MENA region in a pandemic shock context.