Heirs can use a small estate affidavit to collect property directly from banks and other institutions. The court must first approve the application.The next step will be to get a tax ID number. Banks require estates to have an EIN in order to open a bank account in the estate's name. Learn More About Section 153.003 Of The Texas Estates Code And Obtaining Bank Account Information Of A Deceased Family Member In Texas. Where do I look for the will? Learn how to set up an estate account so that you can manage the deceased person's finances according to their wishes. Make the process of opening an estate account simple and straightforward with this stepbystep guide. Yes, you need an account in the estate's name. There is no administration with a small estate affidavit.