This document discusses finance management for non-financial managers. It begins with an overview of the budget of the Belgrade Centre for Security Policy (BCSP) over several years. It then discusses the transformation of BCSP's business and financial models in response to changes in the policy and funding environments. Key lessons discussed include the importance of diversifying funding sources, having a budget that supports the organization's mission and strategy, maintaining adequate liquidity, and having strong financial management procedures and accountability. The document also addresses challenges like unpredictable revenue during crises and restrictive operating environments.