Wisconsin Statutes Property (Ch. 700 to 710) § 705.07. Rights of creditors

(1) Only the creditors of any living party to an account may subject the entire sums on deposit to their claims, as if such sums resulted solely from contributions made by the debtor party. If a joint or P.O.D. account requires the signatures of all of the parties for purposes of withdrawal, such account shall not be subject to the claims of creditors of a debtor party to the extent of the net contributions of the other parties to the account. Such other parties shall have the burden of proving their net contributions by clear and convincing evidence.

(2) For purposes of ch. 242, a debtor party shall be deemed to have made a transfer only at the time some other party withdraws all or part of the sums on deposit, or at the time of the debtor party's death as to sums not previously withdrawn. In the case of a withdrawal while the debtor party is living, the sole grounds for determining any such transfer to be voidable shall be whether the debtor party is or will be thereby rendered insolvent under s. 242.05(1) or whether the debtor party is engaged or is about to engage in a business or transaction for which the assets remaining in the debtor party's hands after the transfer are unreasonably small under s. 242.04(1)(b)1. In the case of a transfer by reason of the death of the debtor party, the sole ground for determining any such transfer to be voidable shall be whether the debtor party's estate subject to administration is insolvent under s. 242.02. For purposes of this subsection, the amount transferred shall be deemed to consist of those assets which the creditors of the debtor party could have made subject to their claims immediately prior to the transfer, less any sums which such creditors could have made so subject to their claims immediately after the transfer.