How do I request a penalty waiver?

Requests must be in writing.  Penalty may be waived on an assessment if you can show reasonable cause for your failure to pay on time. Reasonable cause includes, but is not limited to serious illness or death, a fire or natural disaster, or criminal acts against you. Documentation should be submitted to substantiate the reason for your penalty waiver request. Reference RAB 2005-3

Mail to:
Michigan Department of Treasury
Office of Collections
P.O. 30199
Lansing, MI 48909