Don't forget the IRS. It sounds like a silly platitude. The IRS always gets theirs, doesn't it? But in a decedent's estate it is essential that someone (a personal representative) file a final tax return for the decedent. Again, this seems simple, but not always. Let's say Grandpa Bill, who was working up until his death, died March 15, 2014. Let's say all of his financial assets were jointly owned with daughter. Since Grandpa died before April 15 he hadn't yet filed his 2013 return AND he had income in 2014 for which another return has to be filed.