The court that issued the original (or most recent) child support order generally has the sole authority to hear future disputes related to the modification or enforcement of the child support order—provided the child still resides in the same state. This authority to modify or enforce the original child support order is known as jurisdiction, and the court is said to have continuing exclusive jurisdiction over the child support matters. The court with such continuing exclusive jurisdiction is typically the court in which the parents’ divorce case filed—or if the parents were not married, the court in which the suit affecting the parent-child relationship (SAPCR) was filed (suit to determine parentage or suit to establish paternity).

If the child no longer lives in the state that issued the original (or most recent) child support order, the Uniform Interstate Family Support Act (UIFSA) will determine whether the court that issued the child support order has continuing exclusive jurisdiction, or if the court in the state where the child currently resides will have jurisdiction over modification and enforcement of the child support order.

In Louisiana, the court that issued the original or most recent child support order typically retains the authority to hear future disputes regarding the modification or enforcement of that order, as long as the child continues to reside in Louisiana. This concept is known as continuing exclusive jurisdiction. For cases involving divorce, this would be the court where the divorce was filed. In situations where the parents were never married, it would be the court where the Suit Affecting the Parent-Child Relationship (SAPCR) was filed. However, if the child has moved out of state, the Uniform Interstate Family Support Act (UIFSA) comes into play to determine jurisdiction. UIFSA may allow the court in the new state where the child resides to take over jurisdiction for future modifications and enforcement of the child support order.