Wis. Stat. § 862.01: When personal representative shall account.

Except where final settlement is by sworn statement under s. 865.16, every personal representative shall file in the court a verified account of the personal representative’s administration:

(1) When the personal representative files a petition for final settlement;

(2) Upon the revocation of the personal representative’s letters;

(3) When the personal representative submits an application to resign as personal representative;

(4) At any other time when directed by the court either on its own motion or on the application of any person interested.