For security reasons we require a power of attorney letter for authorization to electronically file the tax return. If they are due refunds we need the first name, last name, social security number and address of the person that will be collecting the funds. If you are unable to provide a copy of the death certificate, we will need the date of death to report a final tax return. Please refer to our Forms to help organize their tax documents. We will also be able to help you determine the necessary tax information to complete the return.