The present invention disclosed herein relates to a system and method for providing a bidding service. A bidding service providing system according to an embodiment of the present invention may include a bidding condition determination unit configured to determine a maximum number of bidders and a bidding price on a basis of an equivalent value of a bid subject, a successful bidder selection unit configured to select a predetermined number of successful bidders from among bidders, and a repayment processing unit configured to set a credit-debt relation between the successful bidders and failed bidders and perform a process for repayment of debt to the failed bidders by the successful bidders.