The European election of Ukraine takes place in the context of scaling military conflicts, global shifts from geo-economic fragmentation, and new economic challenges that require the determination of the legal status of the participants in insolvency relations, procedures of temporary administration, financial rehabilitation, and liquidation of banks. Methodological and applied approaches are characterized to track the growth of Ukraine's external financial vulnerability and the specific weight of cross-border banking operations in European integration. It is found that it is essential to determine the impact of gross flows on financial stability, geographical and financial determinants of cross-border banking requirements, and the impact of internal, external, and global factors. In the applied aspect, it is argued that in the event of insolvency, banks will use the same rights for protection, regardless of whether these measures were adopted under EU or national law. It was established that Ukraine's entry into international business cycles would spread financial innovations between countries, forming a critical channel for the transmission of financial shocks. The macroeconomic volatility of economies influences the occurrence of bank insolvency; the uncertainty of the macroeconomic situation affects the market balance and complicates the regulator's road maps. It was determined that monitoring trends between insolvency and illiquidity is expedient to form an additional equity buffer to cover additional costs. It was established that it is expedient to systematize measures to prevent insolvency from resolving the insolvency of problem banks and financial recovery considering modern realities; improve the efficiency of financial liability management; negotiations with debtors; protect the interests of managers and shareholders; consulting on issues of international insolvency. Keywords: bank insolvency, financial security, banking supervision, resolution tools, financial sector, financial recovery, capital, risks, creditors.