Objective: The objective of this study is to analyze the sources and allocation of federal public resources applied to natural disasters in the Brazilian state of Rio Grande do Sul in 2024. Theoretical Framework: Based on Public Choice Theory, the study investigates how self-interests can influence the allocation of public resources, which is relevant in the context of Brazilian public administration. Method: Using a descriptive and documentary approach, this qualitative research collected data from provisional measures and the Transparency Portal, analyzing the sources and amounts of funds quantitatively and their allocations qualitatively through the lens of Public Choice Theory. Results and Discussion: Most of the funds come from Official Credit Operations (41.80%) and Federal Financial Charges (13.97%). The allocation covers a range of areas from climate change mitigation to support for microenterprises. The diversity of allocations suggests an effort to meet multiple emerging needs and maximize political benefits, reflecting the influence of self-interests in public management. Research Implications: The study emphasizes the importance of transparency and accountability in public management, especially in disaster situations. By revealing how resources are allocated and identifying potential influences of self-interests, the research contributes to the formulation of more efficient and equitable public policies. Detailed understanding of the allocations can improve accountability and integrity in resource allocation, promoting governance practices that increase public trust in government actions. Originality/Value: Applying Public Choice Theory, this study offers insights into the efficiency and equity of resource allocation for natural disasters in Rio Grande do Sul, contributing to the literature on disaster management and public administration in Brazil.