This study examined the role of placement and child characteristics in the unplanned termination of foster placements. Data were used from 169 foster children aged 0 to 20. Results showed that 35% of all foster placement terminations were unplanned. Outcomes of logistic regression analyses demonstrated that behavior problems, parenting stress and a non-Dutch ethnic background of the foster child increased the likelihood of a placement termination. Furthermore, risk accumulation contributed to unplanned terminations. The results indicate that supporting foster parents in managing problem behavior of the foster child and reducing parenting stress may be a key to an effective prevention of disrupted foster care placements.