The only two ways to get an EIN Verification Letter (147C) is to call the IRS at 1-800-829-4933, or to mail the IRS a written request. The hours of operation are 7 a.m.Use this tool to get an EIN directly from the IRS in minutes for free. This confirmation letter is known as Form CP 575 and is mailed to the address mentioned in your Form SS-4 application. The only way to get an EIN Verification Letter (147C) is to call the IRS at 1-800-829-4933. Once the IRS issues an EIN for your Georgia LLC, you will receive your official approval, known as an EIN Confirmation Letter (CP 575). Know your business structure. First, complete the Form SS4, ensuring every section is meticulously filled out. The IRS sends out an EIN confirmation letter for every EIN application it processes. Occasionally, businesses, utilities, or other entities may ask for a STIN.