Illinois state tax forms can be viewed and downloaded online through the Illinois Department of Revenue’s website. All form fields may be filled in using a computer by downloading Adobe Acrobat Reader or enabling an existing version in the browser’s preference settings.
From the main page of the website, click on the Forms tab. Click on the type of tax form and select the necessary form. Click the download link. Instructions are provided on how to file these forms. The website also allows online payments and electronic filing of individual income tax returns. Taxpayers may create a MyTax Illinois account to file, manage and pay individual and business taxes.