In order to protect the confidentiality of tax information, we require tax practitioners, preparers, etc., to have been designated as third-party designee on a tax return on file with the Department before discussing the return with any representative. This authorization will allow you to answer any questions that arise during the processing of your return, call us with questions about your return, and receive or respond to notices we send.
If you have not been appointed as third-party designee or if you are required to perform acts beyond a third-party designation, you must be authorized as a taxpayer’s representative on Form IL-2848, Power of Attorney.
Please note, if you are acting in a fiduciary capacity for a taxpayer who is unable to execute a Power of Attorney and need to represent a taxpayer before the Department, do not submit Form IL-2848. Instead, you must complete Form IL-56, Notice of Fiduciary Relationship.
To submit Form IL-2848 or Form IL-56 for immediate processing send your completed and signed form by email or fax.For an email request, submit your completed form to REV.email@example.com. You should scan and save each Form IL-2848 as a separate PDF document and attach it to your email request. These requests will be processed in three business days, and you will receive confirmation that your request is approved. Please note, sending information via email is not secure.
For a fax request, submit your completed form to 217-782-4217. You should send each Form IL-2848 as a separate fax. Do not include a cover page. These request will be processed in three business days, and you will only receive notification if your request is denied.
Otherwise, you can mail your completed form to the following address:
For questions, see the instructions for Form IL-2848, call us at 1 800 732-8866 or 217 782-3336, or call our TDD-telecommunications device for the deaf at 1 800 544-5304.