Partnership has become a dominant concept in current thinking about the parent–professional relationship within a variety of interventions aimed at child welfare, including family support practice. However, despite the burgeoning policy and research attention, the meaning of partnership in practice remains unclear. Based on interviews with professionals in a family support intervention in Flanders (the Dutch‐speaking part of Belgium), this paper offers an insight into professionals' daily interactions with parents. The analysis reveals a tension between professionals' commitment towards parents on the one hand, and the way professionals take up this commitment in an expert role on the other. Consequences for professionals' relationships in child and family welfare interventions are discussed, as well as some implications for the realization of proper partnerships that acknowledge the power imbalances that exist in such partnerships.