Sounds like this is an old debt to the state of Michigan. TurboTax won't be able to resolve this issue for you. You'll need to contact the state of Michigan yourself for clarification. The letter should offer instructions on how to challenge the state's assessment.
To contact the state of Michigan's Department of Revenue, use the contact info linked below.
Taxes - Contact Us (michigan.gov)
*** I am NOT a tax expert. I am a seasoned TurboTax user, and volunteer to provide assistance to TT users. Nothing I post is to be considered TAX ADVICE; I bear no legal liability for responses.***
