The study considers the issues of mobilizing investment resources of enterprises and business structures, highlights the factors that determine the need for an active technical policy in the modern digital economy. The lack and limitation of investment resources for production purposes in the necessary volumes, under favorable conditions for the provision of borrowed funds, is observed throughout the entire post-reform period of the development of the Russian economy. For the purposes of accelerated modernization, it is necessary to increase the scales of generation of all types of investment resources of enterprises, both own and borrowed, in order to ensure expanded reproduction of promising products on a new technical and technological basis. The purpose of the study is to study possible options for the formation of own investment resources of enterprises and business structures, ensuring their relationship with macroeconomic conditions, the need for borrowed funds, with the most important indicators of the efficiency of the enterprise. The methods of logical analysis, meaningful economic interpretation of economic and managerial phenomena in the environment of investment activity of enterprises, analysis of cause-and-effect relationships in the system of organization of technical development of the enterprise were used in the work. As a result, the study proved the hypothesis that depreciation and net profit can serve as a significant source of investments at enterprises, and proper management of the formation and use of the depreciation fund and the accumulation fund, when there are favorable macroeconomic factors, can significantly increase the share of enterprises ' own funds in their investments. It is proposed to carry out regular management of the depreciation fund and the movement of the accumulation fund for the entire period of the useful life of fixed assets. If this work is not carried out in some periods (years), this significantly reduces the possible share of own funds in investments and increases the need for borrowed funds, increases operating costs.