This paper focused on investigating relations between a state and Buddhism around “Chadae[loan, 借貸]” activities. In early Joseon, the government was consistent with its policies to suppress Buddhism, in which process the Buddhist community was put in a poor circumstance with its status lowered considerably. Also this phenomenon appeared in the Bo that was Chadae managed by Buddhist temples. Only a small number of Buddhist temples managed Bo in early Joseon, and their important mission was to pray for the repose of kings’ souls. Bo had several meanings including contributing to the finance of temples, enriching the Buddhist service being held, and guaranteeing the reproduction of People[民人]. Bo was a Chadae activity deeply inclined toward Buddhism. Records confirm its operation at national agencies in which Buddhist priests were participating and active such as Byeolwayo[別瓦窯], Hanjeungso[汗蒸所], Onjeong[溫井], Guihuso[歸 厚所], and Jesaengwon[濟生院]. The basic principle of Bo was to keep the principal and collect interest. Bo had its particular uses and set an interest rate that was a third of the interest rate from Goryeo. Bo started to shrink to a great extent at the end of King Sejong’s reign, ending up disappearing eventually. In early Joseon, the government imposed restrictions on the operation of private loans and increased the grain of Uichang with no interest significantly. As the functions of Uichang expanded, the private Chadae activities lost a huge ground. The position of Bo that was Chadae run by Buddhist temples was also reduced. In the end, Bo managed by Buddhist temples was reduced and abolished in the expansion of public functions of the government.