Abstract: The optimization of tax expenditures and the balance of interests of all participants of tax relations in the presence of the economic crisis become the object of close attention of the government. A significant share of the financial outflow consists of obligatory payments to the budgetary and extrabudgetary funds payable from revenues of individuals working at an organization. Reduction of tax expenditures attributable to salary funds would increase the efficiency of the organization. Finding a reasonable compromise between the regulatory authority and the taxpayer, i.e. policyholder has become one of the main criteria of the process of tax planning. Elements of personal income tax determine the value of the tax base and payment to be paid including tax rates clearly presented in a tabular form and the current tax deduction system developed in a form of a schema. In addition, the researcher identifies the essential aspects of planning and offers legitimate methods to minimize tax expenses attributable to the income of employees at an organization. The analyzed data are of interest primarily for practitioners in the financial service of business entities with employees as well as for students of economic specialties as a supplement to courses in taxation.

Abstract: The necessity of using the concept of financial sustainability as a summary indicator that describes the financial condition of an entity as a whole, determines the importance of rational administration. To maintain successful management of the financial sustainability of organizations, it is necessary to develop an approach to the definition of this concept and in accordance with this definition, create estimation methods and methods for managing financial sustainability. The subject of the research is the financial sustainability of organizations and implications for tax planning. The author discusses the concept of financial sustainability, methods for evaluating financial sustainability and financial analysis in the form of a numerical example. To achieve this goal the author has used the following research methods: systems analysis, sample survey, classification, methods of comparison, induction and deduction, analysis and synthesis, logical and systematic approaches, modeling and observation. In her research Pogorelova has developed the term base by clarifying the concept of "financial sustainability" and discovered the relationship between tax planning and financial sustainability of economic entities. The author has also developed the technique for assessing the financial sustainability of the organization, which does not require unnecessary material costs and allows to use  Excel or Open Office to assess the financial indicators and their dynamics.