The invasion of Russian troops into Ukraine created new challenges for Ukraine, its society and government. In the article, a systematic analysis was conducted to study the effectiveness of the government's measures to manage state finances in the conditions of martial law and to ensure the performance of the main functions of the state, in particular in the field of social protection of military personnel. It was investigated that the following measures were implemented to stabilize the financial system and the smooth functioning of the country's economy: military refinancing to maintain the liquidity of the banking system, a fixed exchange rate and restrictions on the foreign exchange market, which were aimed at avoiding rapid devaluation of the national currency, as well as sequestration of public expenditures from with the aim of reducing inefficient or unnecessary budget expenditures and their redistribution, in particular, for the needs of military servicemen. Some of these measures include the introduction of military bonds of the Government of Ukraine, the transfer of profits to the state budget, the development of international financial relations with organizations and governments of other countries. It was determined that over the past two years, the financing of defense expenditures has increased significantly, and the system of monetary support for military personnel is being constantly modernized. This requires stable filling of the revenue part of the budget to support economic security and sovereignty of the country.