The aim of this study was to identify determinants of daily function in a population-based sample of children with cerebral palsy (CP). The study took into consideration factors from the entire scope of the International Classification of Functioning, Disability, and Health (ICF). Furthermore, the determinants of daily function were examined from the perspectives of capacity and performance respectively. A total of 216 children with CP (mean age 8.19 years, SD 3.39 years) and their caregivers participated in the study. The potential determinants of daily function from the dimensions of health condition, body functions and structures, environmental and personal factors of the ICF were collected. Stepwise multiple regression models showed that child's age, grade, preferred hand, educational placement, severity of gross and fine motor impairment, and prosocial behavior were important determinants, accounting for 88.29% of the variance of daily capacity. The aforementioned variables together with birth order were determinants of performance of daily function, and accounted for 89.53% of the variance in that performance. Knowledge of determinants of daily function helps clinicians and educators to plan intervention and educational programs targeted at these determinants to improve capacity and performance in daily function for children with CP. (Contains 4 tables and 2 figures.)