The choice of an investment project is based on all the information collected and obtained at all the previous stages of the formulation of the project, the choice of the most effective for the implementation of the investment project from the whole set of alternative ones is made. The main task to be solved in determining the financial viability of a project is to assess its ability at all stages of development to timely and fully respond to the existing financial obligations, that is, to assess the solvency and liquidity of the project. Financing of entrepreneurial firms is a set of forms and methods, principles and conditions of financial support for simple and extended reproduction. When calculating economic efficiency, the discounting method is used, for the need to compare the values of cash receipts and payments, spaced over time. In the economic assessment of efficiency in this work, a dynamic method based on discounting was used.