In Virginia, matters related to children—such as child custody, visitation, and child support—are all modifiable, even if you have a final order from a previous case. If you can show a material change in circumstances, or if the requested changes are in the best interest of the child, modifications may be possible. In cases involving child support, either the payer or the recipient can file a case if they believe there has been a significant change in circumstances since the last calculation. Additionally, if you’ve been paying child support by agreement without a formal court order, you can petition the court for an official order.