Zakat is considered a financial resource in addition to being a cult. It is one of the most important acts of worship and hence its dual role as a cult and a development tool Islamic economics is a remedy for the disruption of wealth distribution by human societies Income, and the extent to which this regular financial instrument is absent and that there is no surplus. The purpose of this study is to study the role of the Zakat in economic sustainability in order to reach welfare and prosperity for citizens of Indonesia. The researcher uses the method of qualitative research, reviewing traditional and contemporary Islamic sources to clarify the importance of Zakat as an institution, and the detailed impact of Zakat on the economics of the prosperity Indonesian as the main subject of the study.The studies are important in creating awareness about the role of Zakat from economic and investment side, and to encourage further research on the impact of Zakat on the prosperity of the Islamic societyworldwide and in Indonesiaespecially as a model for other Muslim country.
Keywords: Prosperity, Welfare society, Economic sustainability.