Michigan does NOT have permitless concealed carry. Carrying a pistol concealed on the person — or, whether concealed or otherwise, in a vehicle the person operates or occupies — without a license is a felony, with limited exceptions for the person's dwelling, place of business, or other land lawfully possessed. The penalty is up to 5 years' imprisonment or a $2,500 fine.
"A person shall not carry a pistol concealed on or about his or her person, or, whether concealed or otherwise, in a vehicle operated or occupied by the person, except in his or her dwelling house, place of business, or on other land possessed by the person, without a license to carry the pistol as provided by law."
MCL 750.227(2) statute