View forms and instructions to change child support or alimony or spousal maintenance in Maricopa County, Arizona. You can choose to make your payment in whatever way is most convenient for you.Although every spousal maintenance case is different, there is an outline to guide the process. To learn the details of alimony payment call 602-548-3400. Complete one of the following application forms: Follow the instructions on the application and provide as much information and as many documents as possible. Arizona uses a formula to determine which parent pays support and how much. Use the calculator above to find your estimated Arizona child support payment. Please note that these forms are not to be used to promote or engage in the unauthorized practice of law. Spousal maintenance. As mentioned above, when child support, spousal maintenance, or attorney fees and costs are an issue in the case, an AFI is required.