In this lesson from Yale's Creating Change through Social Entrepreneurship course, students survey the primary sources of capital available to social enterprises, ranging from government grants to private investment. The lecture explains the tradeoffs among these funding sources and how a venture's stage, mission, and revenue model influence which sources are appropriate to pursue. Following the course's earlier lessons on financial templates and operational efficiency, this lesson addresses the external financing question that complements a venture's own revenue generation, preparing students for later course material on how social impact funding itself has evolved.