In this paper we contrast different aspects of non-profit organizations’ performance from the perspective of their funding sources. Based on previous empirical results indicating that sources of funding influence fundraising performance, we extend the existing research to the analysis of overall non-profit organizational performance. We use the social constructivist approach to non-profit performance to discuss contrasts between privately and publicly funded humanitarian organizations in Croatia. Some differences in growth- and development-oriented measures of nonprofit performance for these groups are identified and discussed in the context of future regional research.