Introduction. The post-war reconstruction of Ukraine is one of the most ambitious and complex challenges of our time, requiring the consolidation of efforts across society and the mobilization of significant resources. In this context, the financial system plays a critical role, acting not only as a mechanism for the redistribution of funds, but also as a key driver of sustainable development. The article examines the role of Ukraine's financial system in ensuring sustainable development in the context of post-war reconstruction. After all, its effectiveness determines the speed and success of rebuilding destroyed infrastructure, launching production capacities, ensuring social stability, and forming a more sustainable economic model. Materials and methods. The information base for the study was provided by official data from the National Bank of Ukraine, the Ministry of Finance of Ukraine and the State Statistics Service of Ukraine; analytical reports from international organizations; and scientific works by domestic authors. The purpose of the article is to study the role of the financial system in ensuring the sustainable development of Ukraine in the conditions of martial law and post-war reconstruction. During the study, a set of general scientific and special methods was used, in particular, methods of analysis and synthesis, induction and deduction, scientific abstraction, comparison, and generalization. Results and discussion. Research into the role of the financial system in the context of post-war reconstruction is extremely relevant, as it allows us to identify effective tools needed to transform Ukraine into a prosperous, competitive country. This article is devoted to analyzing key aspects of the financial system's impact on the country's sustainable development, highlighting existing problems and searching for ways to solve them. It examines the current state of the financial sector and analyzes the challenges and opportunities arising from large-scale destruction and the need to attract investment and state support. Particular attention is paid to the mechanism for attracting international aid, investment, and innovative solutions. Conclusions. The study examines Ukraine's post-war reconstruction measures, which not only provide for the restoration of what has been destroyed, but also lay the foundation for Ukraine's long-term sustainable development, ensuring prosperity for future generations. In this context, the financial system is a key tool for mobilizing resources, directing investment to strategic sectors, and ensuring macroeconomic stability.
Nechyporenko et al. (2025) studied this question.