My Case Manager (MCM) is an application that allows you to see current information about your audit or case. It is part of
My Tax Account (MTA), the Wisconsin Department of Revenue's (DOR) free online tax system. See Publication 701, My Case Manager User Guide for more information.
You can see the following information about your audit or case in MCM:
An audit or case can only have one stage at a time. Audit and case stages include:
The Messages tab is the primary location of MCM Secure Messaging. MCM Secure Messaging is a secure platform for sending and receiving confidential taxpayer information. This easy-to-use system allows records and other information to be sent directly to a department contact and avoids the security risks and size limitations of traditional email.
Note: The MCM Secure Messaging feature is only available for registered MTA users.
The Requests tab shows all the information requests made during the audit or case and whether each request has been satisfied. The status of a request does not necessarily affect the stage of the audit or case.
The History tab shows the stage, including:
MCM is available for all audits and most case types.
Some letters and notices are available for registered MTA users, but not through MCM. Reach out to your department contact for copies of letters and notices.
You can access MCM by logging into MTA. If you are not registered for MTA, see
Using My Tax Account – Business Users and
My Tax Account Registration.
If you do not have a registered MTA profile, you can use the unregistered version of MCM. See
My Case Manager User Guide for more information.
Yes, your representative can obtain access by registering for MTA with his or her own username and password. Your representative should request access as a third-party preparer for the tax type of the audit. See
Third-Party Preparer Account Registration for more information.
If you are currently working with someone at the department, please contact them using the information you were provided for your audit or case.
MS 5-77WISCONSIN DEPARTMENT OF REVENUE Customer Service Bureau PO Box 8949 Madison, WI 53708-8949 Phone: (608) 261-5338 Fax: (608) 267-1030 Email additional questions to
February 18, 2021