The letter must provide the decedent's name, Social Security number, date of death, and the county in which the estate is being probated, if applicable. This form, which lists the necessary requirements for filing, may be obtained from any Register of Wills Office in Maryland.When Congress repealed the credit for state death taxes, it authorized a deduction in its place on the federal estate tax return. Generally, the estate tax return is due nine months after the date of death. A six month extension is available if requested prior to the due date. You'll need the person's Social Security number and certified copies of their death certificate for most agencies and programs. Social Security and Medicare. The personal representative must assess creditor claims against the person who passed away including loans, taxes, or outstanding bills. Filing a Failure to Pay Rent Case? This class will help you learn how to fill out the form. Watch.