Yes, if a refund is due to the decedent, file Form 1310, Statement of Person Claiming Refund Due a Deceased Taxpayer, with the return. If you're a court-appointed or court-certified personal representative filing an original return for the decedent, you don't have to file Form 1310. Court-appointed or court-certified personal representatives must attach to the return a copy of the court document showing the appointment.   Sorry for your loss.