Why should the carbon tax be floating? A Tobin’s Q model applied to green investment

The recent development of integrated reporting intends to address the limitations associated with corporate reporting practices. This paper aims to examine whether a statistically significant relationship exists between integrated reporting quality and financial performance. Secondary data was used, namely the integrated reports and annual financial statements of South African banks listed on the Johannesburg Stock Exchange (JSE) for 2010–2014. For the period 2005–2009, only the financial statements were used, since integrated reporting was not yet mandatory. The research design was longitudinal and it combined qualitative and quantitative methods. Descriptive statistics and Feasible Generalized Least Square (FGLS) were used to explore the relationships between financial performance and integrated reporting quality. The results indicate that there is a positive relationship between integrated reporting quality (IRQ) and earnings per share (EPS). However, there is no significant relationship between IRQ and Tobin’s q (Q-Ratio), IRQ and return on equity (ROE), IRQ and return on assets (ROA) as well as IRQ and economic value added (EVA). Moreover, there are no significant differences on the financial performance of the listed banks before and after the introduction of integrated reporting.

The Working Capital Management (WCM) has an important role for the firm’s success or failure, because it directly affects the overall business health of the firm. This study examined the impact of WCM on profitability and shareholders’ wealth using 50 companies listed in different sectors on the Colombo Stock Exchange (CSE) for the period from 2010 to 2015. This sample represents 47% of the selected sectors of CSE. The profitability of the company is measured using gross operating profit (GOP) and shareholders wealth measured by Tobin’s Q (TQ) ratio. The WCM is measured using five independent variables namely stock holding period (SHP), debtors’ collection period (DCP), creditors’ settlement period (CSP), cash conversion circle (CCC) and current assets ratio (CAR). Further, three additional variables such as firm size (SIZE), leverage (LEV) and earning yield (EY) are employed as controlling variables to capture the impact of other performance of the companies.
The data were analyzed using ordinary least square (OLS) and panel data regression models. These regression models reveal that there is a significant negative relationship between CCC and dependent variables (GOP & TQ). Further, this relationship has been confirmed by the major components of CCC such as SHP, DCP. Firm size also positively and significantly effects on the firm GOP while negatively effects on the TQ. Further, they revealed that there is a significant positive relationship between LEV and TQ. The study finds that the shareholders’ wealth and profitability can be increased through the efficiency of WCM.

Research and development (R&D) investment affects firms’ growth and reflects their investment energy. However, it is recorded as an expense in financial statements, according to generally accepted accounting principles (e.g., International Financial Statements Standards). This study examines whether firms’ R&D investment has a positive effect on their performance, when they engage in corporate social responsibility. The author focuses on firms that have earned corporate social responsibility awards from Global Views Magazine, Common Wealth Magazine, and the Taiwan Institute for Sustainable Energy in order to measure firms’ levels of corporate social responsibility engagement. Tobin’s Q is used as a proxy for firm performance. Because corporate social responsibility engagement is not mandatory in Taiwan, the Heckman two-stage process is used to control for an endogeneity bias. In the first stage, logit regression is employed, using a dummy variable as a proxy for a firm’s social responsibility engagement. In the second stage, the impact of corporate social responsibility on firm value is estimated by regressing Tobin’s Q on various governance and firm characteristics and on a dummy variable for social responsibility engagement. Based on all public traded companies in Taiwan for the period 2005 – 2014, and after controlling for an endogeneity bias, it is found that R&D investment is positively associated with Tobin’s Q, but only when firms engage in corporate social responsibility. Therefore, an investment strategy that meets corporate social responsibility objectives benefits firm performance. The empirical results provide policy implications for firm R&D investment and corporate social responsibility implementation.