Wis. Stat. § 223.01: Trust company banks, capital.

Trust company banks may be organized pursuant to ch. 221 and shall be subject to all the provisions, requirements, and liabilities of chs. 220 and 221, so far as applicable, except that trust company banks may not accept deposits other than trust deposits and except as otherwise hereinafter provided. The division may, with the approval of the banking institutions review board, establish minimum capital requirements for a trust company bank.