How do I access MyTax Illinois?

Setting up access to your MyTax Illinois account is easy and free. To set up your access, you must go to, click the “Sign up Now!” button, and complete specific information about yourself and your company. After IDOR verifies your submitted information—usually within a minute or two—we will send a message to the email address you provided giving you the authentication code needed for your initial login. 

Note: The authentication code is only required for your first login. For step-by-step instructions and troubleshooting, see the Authentication Guide.

If you have additional inquiries, you may submit them to the Questions, Comments, or Request form.