Wis. Stat. § 214.585: Holders of deposit accounts.

Deposit accounts may be held as follows:

(1) By an individual in his or her own right, regardless of age, or by 2 or more individuals.

(2) By a fiduciary if authorized by law.

(3) By a government or governmental instrumentality if authorized by law.

(4) By a corporation or other person.

(5) In any other form receiving the prior written approval of the division.