Whether your not-for-profit organization needs a chief financial officer (CFO) depends on many factors, such as the size of your organization, the complexity and types of revenue sources, and the number of programs you have. Static organizations are less likely to need a CFO than those with evolving programs and long-term plans that rely on investment growth, financing and major capital expenditures. So if your organization is expanding quickly, it might be time to consider hiring a financial executive.