This paper investigates the nonlinear relationship between capital structure and firm performance in the MENA region using a sample of 499 listed firms over the 2007–2020 period, or 6986 firm-year observations. Specifically, we examine the size-threshold effect in the capital structure–firm performance nexus. To do so, this study applies a dynamic panel threshold regression model (DPTR). The findings show that there is a nonlinear relationship between debt and firm performance (Tobin’s Q, ROA, and ROE). Specifically, the threshold values of firm size for the three models are estimated at 9.126 (about $1 million), 15.48 (about $5 million), and 16.816 (about $20 million), respectively, between the low- and the high-sized regimes. In the lower regime, the firm’s value (Q) increases when debt increases; however, in the higher regime, this value decreases when debt increases. Furthermore, in the lower regime, the performances (ROA and ROE) of small firms decrease when debt increases; however, in the upper regime, when debt increases, the performances of large firms increase. The results are several robustness tests. These results support the predictions of signal, pecking order, and trade-off theories. Managers of large (small) MENA firms should increase (decrease) the use of debt to improve performance.

This paper is interested in examining the impact of corporate social responsibility and governance on corporate financial performance. We selected a panel of 141 worldwide hospitality and tourism firms spanning the period 2012–2018 to assess the effects (direct and indirect) of corporate social responsibility and governance on corporate financial performance (measured in terms of return on assets, return on equity and Tobin’s Q). Although a few studies examine the moderating effect of certain factors, our study fills this gap by examining the moderating effect of governance practices (governance structure and institutional quality) on the nonlinear relationship between corporate social responsibility and corporate financial performance. The results of the system generalized method of moments suggest the existence of a nonlinear, U-shaped relationship between corporate social responsibility and corporate financial performance (return on equity and Tobin’s Q). This nonlinearity is confirmed for corporate social responsibility and corporate financial performance (measured by return on assets). However, this relationship is inverted-U-shaped. Furthermore, our results also show that lagged corporate social responsibility, governance practices, firm-specific variables and macroeconomic variables affect current corporate financial performance. The predictions of stakeholders and agency theories are validated. Given our results, it is recommended that policy makers trade off the benefits and costs of corporate social responsibility and take appropriate financial strategies, thus enabling value creation for their companies.