This article focuses on analyzing and identifying the characteristics of losses arising from the marketing and supply of digital tourist accommodation services based on the business competition law system in Indonesia and on the formulation of marketing and supply arrangements for digital tourist accommodation services that are healthy and fair for all tourism accommodation service business actors. normative research methods used in this research, with primary legal materials in the form of laws and regulations related to monopolistic practices and unfair (...) competition. The results of the study show that looking at the characteristics of losses arising from the marketing and supply of digital tourism accommodation services based on the legal system of business competition in Indonesia is considered inappropriate and must be reconceptualized, Furthermore, the regulation of marketing and supply of digital tourist accommodation services that are healthy and fair is still experiencing a vacuum of norms, so it is necessary to formulate the regulation of marketing and supply of tourist accommodation services for all business actors of tourist accommodation services as a means of legal protection in terms of preventing and controlling the potential for unfair business competition practices in the regulation of marketing and supply of digital tourist accommodation services. (shrink)