Abstract: The article is devoted to one of the main taxes in the Russian tax system, corporate profit tax. Profit taxes are used in countries with market economy and serve as one of the most important instruments to encourage the economic growth. The need to find the best parameters to evaluate profit tax is very important and thus, this problem needs to be studied further. The authors of the article note that profit tax is a significant part of state budget. In this article the authors provide results of their analysis when they studied the mechanism that is used to evaluate profit tax and tax revenues into the state budget. The methodological basis of the research involves fundamental concepts described in Russian and foreign researches, legal acts of state authorities, federal laws, President's Decrees and Resolutions of the Russian Federation Government, as well as materials of research and practice conferences. In the course of their research the authors have used abstract logical, monographic, statistical economic and other methods of economic research. The authors of the article analyze principles of taxation of legal entities' profit in Russia, Germany, Denmark and Czech Republic. The authors pay special attention to the main changes in laws on tax and levies in 2017 and make conclusions whether these changes may improve corporate profit taxation process. 

Abstract: The authors of the present research carries out an analysis of tax revenues into local budgets of municipal units in the Voronezh Region over the period of time since 2013 till 2015. The results of the analysis demonstrate that the majority of municipal units in the Voronezh Region tend to decrease tax payments which proves the reduction of taxable bases and number of taxpayers in total. The subject of the research is the execution of tax authorities by municipal units. The object of the research is the provision of tax revenues into budgets of municipal units and urban districts. Theoretical and methodological bases of the research involve legal acts, laws and regulations issued by state authorities, researches of Russian scientists on the questions related to execution of tax authorities by municipal units. The authors of the research analyze the structure of muncipal budget revenue sources reflecting the fact that the main source is 'other revenues', in particular, non-repayable receipts from other budgets in the Russian Federation: from 40% to 80% are composed of dotations aimed at fiscal capacity alignment and dotations to maintain budget balancing measures). The authors also describe the role and place of applicable local taxes (land tax and personal property tax) in the process of developing the municipal budget and studies the degree of the implementation of taxable capacity of municipal units. As a result of analysis, it has been proved that part of the areas in the Voronezh Region improved their taxable capacity as a result of efficient supervisory activities conducted by the Federal Tax Service authorities.