By completing Form IL-1000-E, the member is certifying it will file all Illinois income tax returns and make timely payment of all Illinois income taxes due. This document is sometimes referred to as the charter.To find out if you qualify, write a letter of request to the Illinois Department of Revenue, Sales. Use this form to apply for asylum in the United States and for withholding of removal (formerly called "withholding of deportation"). Tax Application and Affidavit Forms. Once completed, please submit the applicable form(s) below via email or mail to the address provided on the form. Individuals who earned U.S.-based income must file additional documentation. Get your refund status. Download and complete Divorce, Child Support, and Maintenance forms from the Illinois Office of the Courts. No one completing Illinois taxes for the first time can submit and pay online.