Abstract
An argument regarding self-subsistence of NPOs has been exaggerated its importance from the intuitive standpoint of-on-site practice. Although many precedent studies are seen mainly in the American nonprofit sector, which evaluate vulnerability of NPOs with some financing indices or case studies, few articles are seen which are either theoretical or analytical in Japan. Prior research regarding self-subsistence of NPOs has been deriving characteristics of autonomy and self-sustainability, but few studies have examined this empirically. This article demonstrates what factors effect the status of diversity of revenue source, which is one of the important indeices for evaluating self-sustainability, by using Herfindahl-Hirschman Index with financial data of nonprofit corporations in Japan. The estimation results find that scale of expenditure, number of active years, and location of NPOs effect the diversity of revenues sources of NPOs, while also showing some fields of activities tend to raise funding from less revenue sources.