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Abstract:

 The topic of dissertation aims to study the impact of tax planning over the financial performance of companies through giving the lowdown on the different theoretical literature and empirical studies regarding tax planning's practices and what they reflect on the financial performance generally. In order to fulfill this purpose, we relied on econometric to express it quantitatively using the models of panel data of a sample consists of 30 company listed in the Algerian, Moroccan, and Tunisian exchanges during 2015-2018. It was conducted by the statement of indicators that measure the extent to which companies employ tax planning practices; and they are: the total effective tax rate, and the cash effective tax rate in addition to explanatory variables. The financial performance was expressed by using the return rate on property rights and Panel Data models. The study came out that there is no significant impact relation between tax planning represented in the total effective tax rate and the financial performance. It also concluded that there is a significant impact relation between tax planning represented in the cash effective tax rate and the financial performance. On the other side, the study did not reach any significant impact of the other explanatory variables on the financial performance of companies in question except for the bank borrowing rate and the return rate on assets. Keywords: tax planning, financial performance, effective tax rate, panel data.