To close a bank account on behalf of someone who has passed away, you must have legal authority to manage the account. Learn More About Section 153.003 Of The Texas Estates Code And Obtaining Bank Account Information Of A Deceased Family Member In Texas.You can request copies of bank statements, mortgage documents, and other financial information from the deceased person's bank or financial institution. Probate is the legal process to distribute a person's property after they die. To close a bank account after death, you must completely liquidate its funds. This set provides coverage of every aspect of probate law and estate and trust administration in Texas. It includes sample forms and letters. A Letter of Administration give immediate access to deceased personal bank acct without probate or small estate? Fill it out for the deceased, but don't forge the name.