International audienceAlthough local authorities are considered an important link in responding to many current challenges (ecological transition, local development, satisfaction of social needs), their tax resources are today the subject of numerous criticisms and reforms aimed in particular at limiting their weight for companies. However, the actual contributors to these taxes are little or badly known. This article seeks to identify the payers of a particular local tax, the mobility tax, which constitutes an important resource for local authorities in the implementation of urban public transport. Based on the analysis of three networks (Compiègne, Gap and Niort) on an exploratory basis, we show, from a methodological point of view, that ...