Wis. Stat. § 701.0705: Resignation of trustee.

(1) A trustee may resign in any of the following manners:

(a) Upon at least 30 days’ notice to the qualified beneficiaries, the settlor, if living, each cotrustee, each trust protector, and each directing party.

(b) With the approval of the court.

(2) In approving a resignation, the court may issue orders and impose conditions reasonably necessary for the protection of the trust property.

(3) Any liability of a resigning trustee or of any sureties on the trustee’s bond for acts or omissions of the trustee is not discharged or affected by the trustee’s resignation.