Literature analysing the interrelation of religion and economic performance suggests religion to explain differences in household income. Religious communities foster economically conducive attitudes and are important sources of social capital, particularly under weak economic structures. This paper targets at investigating effects of religiosity on rural household income using survey data from Greater Sekhukhune in the Limpopo Province of South Africa. Using insights from religious studies within a conceptual framework of rural household decision-making, the authors estimate an income equation that includes measures for religious affiliation. While church membership per se does not reveal a significant effect on household income, the results show a positive and robust relationship for membership in the Zion Christian Church and the practice of African traditional religion.