The article presents the result of research on en effectiveness of discriminant models on the example of selected Polish joint-stock companies which declared bankruptcy. Aside from general results describing an effectiveness of discriminant models on the base of the own research of the authors, a comparison of the received findings with others economists’ results of research was made. Moreover, an analysis how the relation of an enterprise with the economic situation impacts on an effectiveness of considered models concerning the forecast of a risk of bankruptcy was carried out.