The Illinois Debtors Declaration Regarding Domestic Support Obligations (DSO) is a document that must be filed by an individual debtor in the state of Illinois who has a domestic support obligation. A DSO is a legally binding obligation that requires one party to make payments to another party to support a child or a former spouse. The debtor’s declaration must be filed with the bankruptcy petition and serves to inform the court of any existing DSO that the debtor has, as well as the amount of the obligation and the creditor’s contact information. The declaration also informs the court of the debtor’s plan to pay the DSO in full or in part. There are two types of Illinois Debtors Declaration Regarding Domestic Support Obligations: those filed by joint debtors, and those filed by individual debtors. Joint debtors must file a joint declaration, which must include the names and Social Security numbers of both parties. Individual debtors must file an individual declaration, which must include the individual’s name and Social Security number.