There are many great sites on the World Wide Web but trying to actually find those great sites can be a frustrating experience. We have compiled a list of Websites that we have found to be helpful resources of information. When you click on a link, a new window will pop up. Close the window when you are ready to return to this page. Income Tax Refund Status for Illinois Accounting QuickBooks Accounting Software Tax The Internal Revenue Service Federal Refund Status Federal Tax Forms Illinois Department of Revenue Illinois Department of Revenue - TAX FORMS All Necessary Illinois Tax Forms Client Sites 1040 Organizer