This doctoral dissertation, within the management science discipline, aims to understand and to measure what Islamic finance can propose as an alternative funding retail offer in Belgium. From the primary findings, we try to discover what are its stakes in a capitalistic environment. The study, which is conducted with quantitative and qualitive research methods, is built on four essays that question stakeholders from the demand and the supply: retail consumers, SMEs managers, professional advisors and financial institutions. Each of these four stakeholders is at the origin of an independent but complementary essay that contributes to the general discussion. This research contributes to the managerial field by pointing out the tensions and potential drawbacks in proposing Islamic finance as a relevant retail funding solution in Belgium. We highlight the fact that on the demand side, there is not enough engagement drivers from the consumer, and on the offer side, the financial interest to offer those funding solutions is relatively limited. Finally, by capturing profit and with its engagement motivations, we show how Islamic finance can be proposed as an expression of capitalism. ; (ECGE - Sciences économiques et de gestion) -- UCL, 2021