This study aimed to demonstrate the impact of the financial policy, represented in debt policy and dividend policy, and the capital assets on the financial performance measured by return on equity, total assets turnover and market value added of 53 service companies listed on the Amman stock exchange during the period 2014–2018, using the panel data models. According to the results of testing performed on return on equities (ROE) model, total assets turnover (TAT) model, and market value added (MVA) model, it can be concluded that debt policy has a negative significant effect on market value added and total assets turnover, on the other hand, it has a negative insignificant effect on return on equity. The financial performance of the Jordanian service companies is influenced negatively by the debt ratio as a measure of financial policy; which means service companies are using heavy debt to finance the operating activities, which increases financial cost and the risk of financial failure. The study recommended that service companies can increase the volume of investment in fixed assets to generate high financial performance indicators.

The primary objective of this research is to investigate the relationship between tax avoidance, income and cash held in companies listed on the Tehran Stock Exchange from 2009 to 2013. In this regard, avoidance of paying taxes is independent variables and criteria for evaluating financial performance; namely return on assets, return on average equities, economic value added, market value added, and the ratio of free cash flow are considered as dependent variables. Firm size and financial leverage are also considered as control variables. In general, the statistical method used in this research is correlation and regression. The results of the research showed that there was a significant and reverse relationship between avoidance of paying taxes and performance evaluation criteria, cash held.