The Michigan Notice of Ancillary Administration Filing is a document that must be filed in the court upon the death of a Michigan resident who has assets located in another state. It is used to determine the validity of a will, appoint a personal representative, and allow the estate to be administered both in Michigan and in the other state. There are two types of Michigan Notice of Ancillary Administration Filing: the in-state filing and the out-of-state filing. The in-state filing is used when the decedent owned assets or had creditors in Michigan only. The out-of-state filing is used when the decedent owned assets or had creditors in both Michigan and another state. Both types of filing require the personal representative to prepare and submit a copy of the Michigan Notice of Ancillary Administration Filing to the court. The filing must include a copy of the decedent's will, if any, and a list of the decedent's assets and liabilities. Once the filing is approved by the court, the personal representative will be able to begin administering the estate in both Michigan and the other state.