The Object of the Study. Innovative activity The Subject of the Study. Sources of financing innovation The Purpose of the Study is identifying of optimal sources of innovation in the digital economy. The Main Provisions of the Article. The most important elements of a system that ensures the smooth functioning of the innovation process are the sources and mechanisms of financing technological innovation. At the present stage of development, such an adequate and effective holistic system in the Russian Federation has not been created. The key conditions for creating a favorable economic environment are: the effective functioning of financing mechanisms, the quality and condition of investment sources, which determine the ability and potential of creating and implementing technological innovations. The digital economy is currently opening up conceptually new sources of funding. The dynamic development of digital solutions and technologies in the financial sector enables organizations to reduce the time spent on searching and making decisions about the source, mechanism and procedures for financing operational and strategic activities. The innovative activity carried out on an ongoing basis allows organizations to dynamically develop, meet business trends, or even create them. As you know, innovation requires serious investment and, as a rule, the more risky the innovation, the greater the profitability it has. In foreign practice of financing innovation, crowdfunding platforms have become widespread. Currently, the United States and individual EU representatives are the undisputed leaders in the development of financial technologies, payment systems, digitalization of financial services. In terms of the penetration of digital technologies in the financial sector (it reaches 85% according to experts), such countries also occupy the first positions. One of the main trends of the financial sector in developed countries is the creation of virtual banks and the Internet banking service. The article analyzes and evaluates the structure of sources of financing technological innovations, carries out a comparative analysis of financing research and development in Russia and developed countries, and considers the possibilities of using digital tools and sources to finance innovation.