In research performed I watched to present methods of classification of loans and methods of establishing internal ratings within the banks. The result of the method of classifying assets consists in identifying good quality loans and their separation by the nonperforming loans. I also conducted an analysis of the situation of currency risk in case of the commercial banks. Thus I determined a set of indicators that can be measured both at the level of territorial units as well as the level of Central Bank. Another important issue addressed in the paper is the importance of ensuring solvency...