The article describes the key factors in the development of the state economic system. One of the key factors is the stability of the banking system. Currently, the banking sector in Russia is characterized by increasing instability and a decrease in the reduction of opportunities to replenish the resource base. It is noted that the sources of developing the resource base of credit or-ganizations include own and attracted resources. Own resources include retained earnings, trust funds, formation of a statutory fund, additional contributions of shareholders to the statutory fund, mergers and acquisitions, etc. Borrowed funds comprise interbank loans, issuance of debt securities, term deposits, etc. The main part of the resource base of banking sector belongs to the large credit organizations. The structure and mechanism of creating own and attracted resources by organizations of the banking sector are examined in detail. A review and analysis of existing methods of raising funds by credit organizations is presented. The main trends in changing the resource base have been studied; the assessment of the indicators characterizing the volume and dynamics of bank liabilities at the present stage has been presented. It has been found that the mechanism of forming the resource base of the banking sector has the certain difficulties. A key problem in or-ganizing fundraising mechanisms is the imbalance in long-term assets and liabilities. Today, credit organizations form a significant part of their resources from short-term sources. There has been in-ferred the existence of a priority task for the credit organizations in order to increase competition and liquidity: credit organizations have to choose a method to form a resource base that, at minimal cost, will ensure the payment of dividends, replenish reserves and funds, and provide necessary conditions for the effective development of the organization activities.