Federal Tax Information
Tax forms and publications are posted on the IRS website.
Current year and former year forms and publications can be found here: http://www.irs.gov/Forms-&-Pubs
All current forms and publications can be found here: https://apps.irs.gov/app/picklist/list/formsPublications.html
To request tax forms from the IRS by mail, click here and submit your order: http://www.irs.gov/uac/Forms-and-Publications-by-U.S.-Mail
You can also call the IRS at 1-800-829-3676 to place an order for tax forms.
State Tax Information
The Illinois Department of Revenue provides forms for download. These are PDF files that can be viewed and printed with Adobe Acrobat Reader (free download).
Individual Income Tax Forms for Illinois Taxpayers
Business Income Tax Forms