A measure of risk, the dependency ratio measures the extent to which an organization depends on its major donors to fund its work. It is an indicator of how vulnerable an organization may be to changes in the priorities of its major donors and partners. Here's how it is calculated:
Amount of contributions from top 5 donors / Total Organizational Expenses = Dependency Ratio
Example: if an organization's top five donors have contributed $250,000 over the past three years, and the organization's total expenses over the same three-year period were $1,000,000, the dependency ratio is 25% (250,000 /1,000,000), meaning that the organization would have to replace 25% of its budget if it lost its top five donors.