The Illinois Joint Petition for Simplified Dissolution of Marriage is a legal document that allows married couples in the state of Illinois to mutually dissolve their marriage in an amicable and cost-effective manner. It is a form that the couple files jointly with the court. The form requires both parties involved to agree to the requested divorce terms and to waive certain rights, such as the right to a trial, the right to spousal support, and the right to an appeal. The form also requires both parties to provide information regarding their assets, debts, income, and other financial matters. There are three types of Illinois Joint Petition for Simplified Dissolution of Marriage: an uncontested dissolution, a contested dissolution, and a default dissolution. An uncontested dissolution is a divorce in which both parties have agreed to all the terms of the dissolution without dispute. A contested dissolution occurs when the parties have disagreements over certain aspects of the dissolution. A default dissolution is granted when one of the spouses fails to respond to the joint petition.