The article is aimed at evaluating the State debt and the State-guaranteed debt as components of ensuring the sustainability of Ukraine's public finances, identifying trends and factors that determine debt security and affect the pace of development of the country's economy. The article discloses the indicators of measuring the sustainability of public finances; indicators of effectiveness of the policy of ensuring the sustainability of Public Finances of Ukraine until 2030 are presented; the role and importance of debt security in ensuring the sustainability of public finances is determined. A factor analysis of the State debt and the State-guaranteed debt is carried out on the main grounds – the average US dollar exchange rate per year, G...