Mich. Comp. Laws § 169.241: Single contribution of $20.00 or expenditure of $50.00; written instrument, credit card, or debit card; anonymous contribution; contribution in name of another; violations; penalties.

Sec. 41.

(1) A person shall not make or accept a single contribution of more than $20.00 in cash or make or accept a single expenditure of more than $50.00 in cash. Contributions of more than $20.00 and expenditures of more than $50.00, other than an in-kind contribution or expenditure, must be made by written instrument, credit card, or debit card.

(2) A person shall not accept or expend an anonymous contribution. An anonymous contribution received by a person must not be deposited but must be given to a tax exempt charitable organization. The charitable organization receiving the contribution shall provide the person with a receipt. The receipt must be retained by an appropriate committee pursuant to section 22.

(3) A contribution must not be made, directly or indirectly, by any person in a name other than the name by which that person is identified for legal purposes.

(4) A person who knowingly violates this section is guilty of a misdemeanor punishable, if the person is an individual, by a fine of not more than $1,000.00 or imprisonment for not more than 90 days, or both, or, if the person is other than an individual, by a fine of not more than $10,000.00.