This article looks at one component of Taiwan's development experience, the informal financing techniques used by small businesses, to clarify the interaction between the formal Republic of China (ROC) legal system and the network structure of Taiwanese society. The ROC legal system has supported the economic development process direcdy by regulating economic activity, and indirectly by facilitating the networks of relationships that also regulate economic activity. The relational structure of traditional, rural Chinese society has survived in a modified form in modern Taiwan, and this modern form selectively blends elements of the modern legal system, networks of relationships, and the enforcement services of organized crime. Ideas such as “legal centralism” and “legal pluralism” fail to capture the dynamic of the relationship between the ROC legal system and Taiwanese society, so the idea of “marginalization of law” is offered as a better description.