End of pediatric cancer treatment requires family adjustment. Caregivers who struggle to incorporate the child's condition into family life have poorer family outcomes. To better understand factors that contribute to successful transition off active childhood cancer treatment, we sought to examine caregiver perceived management ability of the youth's condition and family functioning as predictors of caregiver distress, evaluate family functioning as a mediator between perceived ability and distress, and explore race and ethnicity as a moderator between perceived ability and family functioning. Caregivers (N=141) completed measures assessing family management (condition management ability; CMA), family functioning, and distress as part of a clinical education and screening program within 1year of the end of treatment. Bias-corrected bootstrap regression analyses examined mediation and moderated mediation models with patient race and ethnicity as the moderator. The overall mediation model was statistically significant for CMA→family functioning→distress. Race and ethnicity moderated the relationship between CMA and family functioning, but the full model was not significant. CMA was related to family functioning for caregivers of non-Hispanic white youth, but not caregivers of Hispanic youth. Family functioning was related to distress for all caregivers. Family functioning serves as an initial intervention target to reduce caregiver distress. Caregiver perceived management ability of their child's condition is a meaningful predictor of family functioning and distress for caregivers of non-Hispanic white youth, yet CMA may be limited as a screener of family management patterns for diverse populations, and other family management dimension may be more applicable.