The study identifies and systematizes key indicators and criteria for ensuring the financial stability of the restaurant business. The complex and thorough analysis of features of maintenance of financial stability of the enterprises of restaurant business on an example of one of restaurants of a chain of the Japanese kitchen of LLC «Sushiya» is carried out. After analyzing the key indicators of financial and economic activity of the restaurant, using the method of complex calculation of the rating of the financial condition of enterprises in the hospitality industry, the level of financial stability of the studied enterprise is determined. Based on the results of practice-oriented analysis, the ranking of financial management goals by the degree of impact on the financial stability of the enterprise. The mechanism of ensuring financial stability of restaurant business enterprises is modeled. The developed and substantiated mechanism is based on a unique methodology, which, unlike existing ones, is adapted to the field of hospitality, is carried out by specific tactical and strategic tools of financial management, based on the chosen type of enterprise policy; takes into account the dynamics of the main financial indicators of the enterprise, which is planned to implement the mechanism and the possible impact of factors of the external changing business environment. With the help of the matrix of financial strategies of J. Franchon and I. Romane, the position of the restaurant «Sushiya-Lavina» is determined and the methodological tools for improving the efficiency of its financial stability are substantiated.