Formal Definition
Extraordinary expenses are large, out-of-pocket costs that are NOT covered by the basic child support transfer payment. By Washington law, these must be shared proportionately based on each parent's income percentage.
Real-World Application
“Daycare, health insurance premiums, and long-distance travel expenses for visitation are all considered extraordinary expenses. If Parent A makes 70% of the combined income, they pay 70% of the daycare bill.”