This brochure will be useful to you in answering general questions on how to proceed with the administration of an estate. You must complete the federal estate tax return (IRS Form 706) for the date of the decedent's death before filling out the Maryland estate tax return.You must file the necessary forms and documents with the Register of Wills in the jurisdiction in which the decedent was domiciled at the time of death. Using the information from the federal return, complete the Maryland estate tax Form MET-1, using the form appropriate for the date of the decedent's death. Within three months after appointment, the personal representative shall file with the register an information report in the following form.