The article investigates methodological tools for estimation of financial sustainability of the enterprise. The authors classified the appropriate approach; in the context of each classification group highlighted the advantages and disadvantages that limit their field of application; attention is accented on the risks associated with the activities of the enterprise and arising during the implementation of methods for assessing financial sustainability. The article also is presented the classification of Russian normative and legal acts regulating the methodical aspects of the analysis of financial sustainability of the commercial organization.