MO HB2431

Defines "relocation" as a change in a child's principal residence of 50 miles or more for 90 days or longer, excluding temporary absences.

Requires written notice by certified mail at least 60 days in advance of relocation to any party with custody or visitation rights, including the new address, phone number, moving date, reasons, and proposed revised custody schedule.

Allows relocation to proceed 60 days after notice unless a parent files a motion to prevent it within 30 days, with burden of proof on the relocating parent to show good faith and best interest of the child.

Requires courts to order frequent and meaningful contact between the child and non-relocating parent, and to allocate transportation costs and adjust child support accordingly if relocation is permitted.

Treats failure to provide required relocation notice as a factor in custody modification decisions, potential basis for ordering return of the child, and grounds for ordering the relocating party to pay the objecting party's reasonable expenses and attorney fees.