Wisconsin Statutes Probate (Ch. 851 to 882) § 853.18. Designation of beneficiary, payee or owner

(1) Except as otherwise provided in s. 853.15 or 853.17(1) or ch. 766, none of the following is subject to or defeated or impaired by any statute or rule of law governing the transfer of property by will, gift, or intestacy, even though the designation or assignment is revocable or the rights of the beneficiary, payee, owner, or assignee are otherwise subject to defeasance:

(2) This section applies to such designations or assignments made either before or after June 25, 1969, by persons who die on or after that date. This section creates no implication of invalidity as to any designation or assignment, of the nature described in sub. (1), made by any person who dies before that date or as to any declaration, agreement or contract for the payment of money or other transfer of property at death not specified under sub. (1).