Child support generally may be changed or modified by filing a motion to modify and demonstrating to the court that the circumstances of the child or one or both parents have materially and substantially changed, or that some period of time (3 years, for example) has passed since the court’s last child support order. And if there has been a material and substantial change in the custody of the child—if, for example, the noncustodial parent who was paying child support has become the custodial parent—the court may change or eliminate the child support obligation based on the change in the custody arrangement.

In Nevada, child support orders can be modified if there has been a 'material and substantial change' in the circumstances of the child or either parent since the last order was issued. This could include significant changes in income, changes in the needs of the child, or other relevant factors. Additionally, Nevada law typically considers a change in the custody arrangement to be a material and substantial change. If the noncustodial parent, who was previously paying child support, becomes the custodial parent, the court may modify or terminate the child support obligation to reflect this change. To initiate a modification, a parent must file a motion to modify with the court, and the court will evaluate whether the circumstances warrant a change in the child support order. It is also possible for child support to be reviewed every three years without showing a change in circumstances. An attorney can provide guidance on the process and represent a parent's interests in court.