Rating is granted to many institutions - including the institution of a state— in the actual fact, it includes the ceiling of sovereign bonds. The evaluation of creditworthiness of a country conducted by rating agencies easies the issuance activity to a large extent. After all, rating is an objective and independent measure of credit risk of a given country willing to take a loan on the market. Furthermore, rating is an opinion concerning the possibility of a country serving its financial liabilities. The financial crisis in the world, manifesting itself in the decrease of gross national product in many countries, revealed the weak sides of world economy. The effect is overall economic debilitation as well as the decreased rating of particular countries.