The problem of the financial stability evaluation has a significant importance in the field of the management theory and practice, internal planning and control of the enterprise. The study of different approaches regarding the financial stability concept is characterised by a large variety of theoretical and applicative definitions. It is impossible to formulate some recommendations of financial stability analysis or/and assessment in corporate sector without knowing the justified essence of financial stability concept. In the work hereby, a new concept of financial stability in the corporate sector has been elaborated, approved and proposed for use, generated by the intent to increase the efficacy of the whole process in the field. To achieve the purpose of the research, the dialectical method with its inherent processes was used. The presence of these aspects of scientific investigation gives the article originality and update.