OBJECTIVE. The main objective of this study was to examine variability among states for 3 indicators of the family financial burden related to caring for children with special health care needs. METHODS. Data were from a 2001 national survey of households with children ( < 18 years of age) with special health care needs, with a representative sample from each state. The outcomes examined included whether a family had any out-of-pocket expenditures during the previous 12 months related to the child's special health care needs, the amount of expenditure ( absolute burden), and the amount of expenditure per $ 1000 of family income ( relative burden). We used multilevel regression to examine state-level variability in financial burden, controlling for individual-level factors. We also examined the association between state median family income and state mean financial burden. RESULTS. Overall, 82.5% of families reported expenditures of more than $ 0. Among these families, the mean unadjusted absolute burden was $ 752 and the relative burden was $ 19.6 per $ 1000. Adjusted state means ranged from $ 562 to $ 972 for absolute burden and from $ 14.5 to $ 32.3 per $ 1000 for relative burden. Families living in states with higher median family incomes had lower financial burdens across all 3 measures. CONCLUSIONS. Families that are similar with respect to household demographic characteristics and the nature of their children's special health care needs have different out-of-pocket health expenditures depending on the state in which they live. Documenting and understanding this variability moves the field closer to the goal of establishing evidence-based, state policy recommendations aimed at reducing the financial burden of these vulnerable families.