In modern conditions the provision of investment process financing is the most important task of state economic policy aimed at achieving sustainable growth and dynamic development of the Russian economy in general. This problem solution requires further theoretical consideration and development of appropriate methodological, methodical and practical recommendations. Financing of investment activity development should be based on the systemic approach, which considers this process as an element of the financial support system of the state innovation development. It is necessary to conduct research in order to expand the financial component of this support, encourage the investment process development, enhance financial relations in the sphere of forming and using the intellectual property objects and develop a complex of measures to study the innovations implementation possibilities. Although economic science pays a lot of attention to various aspects of the issue, there is currently no research work, devoted to the study of sources of the investment process financing. Development of methodical and practical recommendations to establish the system of its financing, taking into account modern world economic trends is required. The authors have revealed the enterprises’ general economic profit while promoting sustainable economic growth by means of provision of financial resources for it. The closeness of the relationship is calculated on the basis of regression models that characterize the sectoral distribution of gross profit. The correlation-regression analysis has helped to assess the influence of the main sources of the RF fixed assets on the investment index. The economic nature of the sources determines its value and dynamics