["Family Relations, EarlyView. ", "\nABSTRACT\n\nObjective\nThis study investigates how separated parents respond to defaults on child support payments, and how these strategies are shaped by their personal and relational context.\n\n\nBackground\nFormal (i.e., legal) mechanisms are assumed to ensure compliance with child support orders. However, when payment defaults occur, parents can adopt varied strategies, which can precede or extend beyond legal action. Informal actions are therefore important to consider in order to understand the range of responses to defaults on child support payments.\n\n\nMethods\nTwenty‐five semi‐structured interviews with separated parents in Belgium were analyzed through thematic coding and matrix comparison.\n\n\nResults\nA context‐sensitive typology emerges, consisting of affirmative (informal social pressure), militant (formal legal enforcement), and resigned (acceptance without enforcement) response strategies. These strategies are closely linked to respondents' relationship quality, personal resources, and justice perceptions.\n\n\nConclusions\nThe study advances the theoretical understanding of parental agency in payment enforcement processes and signals policy avenues that integrate personal and relational contexts into support systems.\n\n\nImplications\nChild support enforcement should account for the relational and personal context when addressing defaults. Tailored interventions, including mediation, relational support, and clearer access to enforcement, may enhance family well‐being and reduce the burden on formal systems.\n\n"]