Learn what happens in a probate estate in Michigan after a person's death. From the Probate and Estate Planning Section of the State Bar of Michigan.To start this process, file a Petition for Assignment with the probate court in the county where the decedent lived. Probate Court said to go to the web site and find the forms we need to do it ourself. Directions for Completing Account Form in a Decedent Estate. PC 584 – Long Form. Accountings for Decedent Estates. Accountings are a way to keep interested persons in an estate informed as to the activity of the estate. To close a bank account on behalf of someone who has passed away, you must have legal authority to manage the account. There's potential for residents to uncover lost treasures in the form of forgotten bank accounts, overlooked insurance payouts, and more.