The subject of the article is international legal aspects of economic responsibility of states. The aim of the article is to find an answer to the problematic issues of economic responsibility of states and its international legal aspects. Different concepts of economic responsibility are analyzed due to the lack of a unified approach to it both in economics and in related branches of law. It is noted that the institution of economic responsibility is designed to stabilize the relations of socio-economic development, the interests of participants in social exchange and to achieve the goals of sustainable development. From the international legal point of view of understanding economic responsibility, the state bears two types of responsibility – material (economic) and non-material (political). And international legal responsibility of the state is considered as an institution of the law of international responsibility. It is from this point of view the economic responsibility of the state is considered by international lawyers and specialists in the field of international relations. The methodology of the article is based on the fact that there are three basic mechanisms of liability – derivative of property rights, contracts, and torts. Contract law deals with breaches of duty, tort law deals with accidental or intentional injury to persons or property, and property law deals with misappropriation or interference with property rights. It is concluded that the state is the same economic entity in terms of economics as all equal economic entities. However, the applicability of the means of economic responsibility in the international legal aspect is complicated by the immunity of the state with regard to its property. Therefore, there are signs of liability not for all property, but only for that which has certain signs of applicability – use for commercial purposes, connection with the subject matter of the claim. In the aspect of economic responsibility, there is a distinction between immunity from jurisdiction and immunity from enforcement. The problem of differentiation of commercial and state property is outlined, attention is focused on the existence of certain categories of state property, the public nature of which is not in doubt and which are not considered possible for economic (property) responsibility for the conduct of diplomatic and consular activities of their missions, consulates, special missions, etc., whose immunity is enshrined in the Vienna Convention on Diplomatic Relations of 1961; military property, as well as property used for military purposes; property that is part of the cultural heritage of a foreign state or part of its archives, as well as property that is part of an exhibition of items of scientific, cultural or historical significance. It is also concluded that economic responsibility in international law is not always associated with the negative consequences of unlawful behavior, because it can also be applied as a result of lawful behavior, leading to the infliction of harm to other subjects. Thus, the economic responsibility of the state is on the verge of regulation of public and private law. This is its peculiarity and complexity of its application to the state.