These forms allow parents, families, and employers to provide the Child Support Division with additional information so we can better serve you. Keep in mind, mailed applications take longer to process than online applications.Call (800) 252-8014 to receive a form in the mail. To calculate your net income for child support purposes and to calculate the child support percentage, Texas law provides a number of guidelines. It's very difficult to get spousal maintenance (alimony) in Texas. In this article, learn about how spousal maintenance is ordered, the requirements to be eligible for spousal maintenance, and other important information. Packets of forms are available for sale to be used in filing a new case or modifying a case in either the Family or Civil courts. Complete the fields below and press calculate to estimate alimony. The figures presented are based on legal California alimony guidelines. This calculator provides an estimate for a single source of income.