One of the leading problems of Ukraine's economy at the present stage of its development is the issue of public debt, the constant increase in its size, irrational structure, which creates the preconditions for the dollarization of the national economy. Public debt is an important element of a market economy. As of today, there is no state that would not use borrowed funds. Borrowing by the state is due to the lack of own financial resources needed to finance the state budget and state functions. If used effectively, borrowed funds can be a positive factor in economic growth, but otherwise the increase in debt leads to economic dependence, deteriorating financial stability, as well as the financial crisis. The article reveals the issue of public debt of Ukraine, analyzes the dynamics of its value from 2009 to 2021 and identifies the reasons for the growth and / or reduction of this indicator. A study of the structure of debt obligations on the basis of the creditor, analyzed the advantages and disadvantages of internal and external borrowing. The article also provides a detailed description of the structure of internal and external creditors, the main tools used by the Government of Ukraine to attract domestic loans. Particular attention is paid to the analysis of domestic debt in terms of the structure of domestic government bonds. The ratio of public debt to gross domestic product and its comparison with the marginal and safe level are considered. A forecast was made for the amount of public debt for the future.