Child support can be modified in Virginia post-judgment if there has been a material change in circumstance since entry of the order setting child support. Section 20-108 of the Code of Virginia provides that the court may modify child support or custody as the changed circumstances of the parents and the benefit of the children may require.
The Court can act upon the petition of a parent, a probation officer or the Department of Social Services, setting forth the reasons for the relief sought. The court can also act on its own initiative but this is something we have never seen. Support can be retroactively modified only from the date that notice of the pending petition requesting modification has been given to the other party.