Wisconsin Statutes Vehicles (Ch. 340 to 351) § 344.578. Credit card for deposit or damages

(1) Prohibited deposits; collection of damages. Except as provided in this subsection, in sub. (2), or in s. 345.28(5w), a rental company may not charge a credit card belonging to a renter as a deposit for damages for which the renter may be held liable under the rental agreement or under s. 344.574(2)(a) or for any other charges. If a rented private passenger vehicle is damaged or if the renter owes any other charges provided for in the rental agreement, the rental company may charge a credit card belonging to the renter as payment for the damages for which the renter is liable under s. 344.574(2)(a) or for any other charges provided for in the rental agreement only if the rental company obtains the renter's authorization to use that credit card for payment and the authorization is obtained after the total amount of the renter's liability or other charges is determined and before the rental company processes the credit card charge.

(2) Deposit for rental fees. If authorized by the renter, a rental company may charge a credit card belonging to the renter as a deposit for the estimated cost of the rental, as determined under this subsection. The estimated cost of the rental may not exceed an amount equal to the daily rental rate specified in the rental agreement, which may include the daily charge for a damage waiver if purchased by the renter, multiplied by the number of days specified in the agreement for which the private passenger vehicle is being rented.