The impact on everyday life for siblings of children with intellectual disability or typical development was examined. Participants were families of children with intellectual disability (n = 39) or typical development (n = 75). Child behavior problems and sibling impact were assessed at child ages 5, 6, 7, and 8. Results indicate that siblings of children with intellectual disability were consistently reported by mothers and fathers to be more negatively impacted compared to siblings of typically developing children. When child behavior problems were accounted for, however, there was no longer a significant relationship between child intellectual status and sibling impact. For both intellectual disability and typical development groups, cross-lagged panel analyses indicate that early child behavior problems lead to increased sibling negative impact over time.