The debate over legal thought on usury, probably does not remain debate space among scholars, because its prohibition is very unequivocal. But the problem appears when conventional bank rate is perceived same as riba/usury. This brief article will explore the concept of usury in fiqh and economic perspective, and elaborate different interpretations of legal thought of usury among moslem scholars. In addition, the implication of those different interpretations on riba against the existence of Islamic banking will be widely discusse