The emergence of this form of partnership between the private sector and the state to support business, including services, dictated by the fact that the state does not always has a sufficient amount of available funds and workforce necessary for the implementation of infrastructure development projects, including small business support infrastructure. Therefore, the use of tools interaction between private business and the state of the development of infrastructural spheres of support of small business becomes more appropriate. At the same time, this trend is not enough studied by modern scholars, which causes the relevance of this study. This article aims to study the essence of the public-private partnership, its legal basis in the Russian Federation, the assessment of the level of development of the public-private partnerships in the regions. To investigate this issue theoretical and empirical research methods, techniques and economic-statistical factor analysis, economic and mathematical modeling, expert evaluation were used. In contrast to existing studies, the authors prove the necessity of the use of public-private institutions and municipal-private partnership in the development of small business support infrastructure in the regions. For this the authors developed a model of using public-private institutions and municipal-private partnerships for infrastructure development of small business support with the release of the stages of development and implementation of public-private project. © 2016 Rudenko et al.