Complete one of the following application forms: Follow the instructions on the application and provide as much information and as many documents as possible. The courts provide a free calculator that can be used to determine what a divorcing parent's child support obligations might be.You can choose to make your payment in whatever way is most convenient for you. Forms and information for filing for child support in Arizona. The Child Support Calculator is an interactive program that will calculate a child support amount based on the Arizona Child Support Guidelines. DISCLAIMER This is to help the lowerearning spouse throughout the divorce process, especially when the divorce is in litigation. In Arizona, either spouse in a divorce can have their family law attorney request an order for spousal maintenance or spousal support. Normally, you file an action to Modify support in Arizona. However, our Phoenix attorney can't ask the court to order child support for more than 3 years before the date of filing for divorce. The guidelines apply to all natural and adopted children, whether born in or out of wedlock.