Use this form to show they have adequate means of financial support and are not likely to rely on the US government for financial support. How to File an Affidavit of Support.The Supreme Court Commission on Access to Justice has approved the following forms. All Illinois Courts must accept these forms. If you are filing both forms at the same time, include all of the supporting documents for both forms together. Download and complete Divorce, Child Support, and Maintenance forms from the Illinois Office of the Courts. A copy of a non-expired, government issued photo ID of the person requesting the correction. • Documentation required to complete the correction requested. In 3a-d, check the boxes of the documents you are attaching to this form as evidence of your income, assets, and debts. If you select 3d, enter the names of the.