Support modification is the process of changing an existing child support or spousal maintenance order when the applicable legal standard is met. Child support modification requires a showing of a substantial and continuing change in circumstances.

A modification petition is required. Support does not modify itself when circumstances change. The paying parent who experiences a job loss needs to file for modification immediately because support continues to accrue at the current rate until a modification order is entered.

Retroactive modification of child support to a date before the petition is generally not available.