The article examines territorial preferential regimes within the system of financial law regulation. It substantiates the need to distinguish them from preferential tax regimes and individual investment tax incentives. The key system-forming features of territorial preferential regimes are identified as territoriality, understood as the legal separation of a part of the economic space, and preferentiality, which is not limited solely to a set of tax incentives. The proposed approach aims to eliminate methodological uncertainty and to develop comparable criteria for assessing the effectiveness of territorial preferential regimes.