The National Sharia Council of the Indonesian Ulema Council (DSN-MUI) in determine the related fatwa sharia economy . The fatwa issued by DSN-MUI holds role important in determine guidelines as well as appropriate policy with sharia principles in practice economy in Indonesia. Research This use approach qualitative descriptive with focus on studies case in the process of determination several DSN-MUI fatwas regarding Islamic economics . Data obtained through interview with DSN-MUI member , analysis fatwa documents , as well as study relevant literature . Research results show that determination of the fatwa by DSN-MUI through a number of stages , namely collection information , discussion scientific , study library , consultation with experts , and finally reach consensus For produce a fatwa. This process aiming For ensure the fatwa is issued No only in accordance with sharia rules , but can also follow development dynamic economy . In addition , research This disclose that DSN-MUI uses a collective ijtihad approach that involves various parties , including academics , practitioners , and regulators, in order to ensure validity as well as wide acceptance against the fatwa issued . Findings from study This give contribution significant in development sharia economy in Indonesia and can become reference in the issuance of a similar fatwa in a country with system Islamic economics .