(1)    Definitions. In this subchapter:

      (a)    “Bank service corporation” means a corporation organized to perform bank services for 2 or more banks, each of which owns part of the capital stock of the corporation.

      (b)    “Bank services” means check and deposit sorting and posting, computation and posting of interest and other credits and charges, preparation and mailing of checks, statements, notices and similar items, other clerical, bookkeeping, accounting, statistical, auditing, compliance, loan documentation, administrative, technology, or other similar functions performed for a bank, or any other service established under sub. (6).

      (c)    “Invest” includes any advance of funds to a bank service corporation, whether by purchase of stock, the making of a loan, or otherwise, except a payment for rent earned, goods sold and delivered, or services rendered prior to the making of the payment.

   (2)   Investments in bank service corporations.

      (b)    If stock in a bank service corporation is held by 2 banks, and one of the banks ceases to utilize the services of the corporation and ceases to hold stock in it, and leaves the other as the sole stock holding bank, the corporation may nevertheless continue to function as a bank service corporation and the other bank may continue to hold stock in it.

   (4)   Permitted activities of bank service corporations. A bank service corporation may not engage in any activity other than the performance of bank services for banks.

   (5)   Contracting for bank services. A bank may cause to be performed, by contract or otherwise, any bank service for itself, whether on or off its premises, if the bank and the party performing the service provide the division with assurances, satisfactory to the division, that the performance of the service will be subject to regulation and examination by the division to the same extent as if the service was being performed by the bank itself on its own premises.

   (6)   Additional bank services.

      (a)    The division may establish additional services as bank services under sub. (1) (b) if the services are related to the routine daily operations of banks.

      (b)    A bank may file a written request with the division to exercise its authority under par. (a) and may include, along with the request, a description of any proposed bank service and an explanation of how that service is related to the routine daily operations of banks. Within 60 days after receiving a request under this paragraph, the division shall approve or disapprove the request.