An Arizona Petition to Modify Custody, Visitation and Child Support is a legal document that can be filed by one or both parents in order to modify the existing custody, visitation and/or child support arrangements. The petition must be filed in the county where the child lives and must include the reasons why the petitioner believes the current arrangement needs to be changed. If the court agrees with the petitioner, the court will then enter an order to modify the existing agreement. Common types of Arizona Petition to Modify Custody, Visitation and Child Support include: • Petition to Modify Custody: This petition can be filed by either parent requesting a change in the current custody arrangement. The petitioner must provide a detailed explanation of why the requested change is in the best interest of the child. • Petition to Modify Visitation: This petition can be filed by either parent requesting a change in the current visitation arrangement. The petitioner must provide a detailed explanation of why the requested change is in the best interest of the child. • Petition to Modify Child Support: This petition can be filed by either parent requesting a change in the current child support arrangement. The petitioner must provide a detailed explanation of why the requested change is necessary and must also provide evidence of the current financial circumstances of both parents.