An IRS audit letter is a message from the IRS. It's their way of saying they want to double-check your tax return.IRS uses Letter 2205 to notify you that your return has been selected for audit. The notice will likely include Form 4564 or Form 886-A. An Initial Contact Letter is your notification that your tax return has been selected for an audit (also called an examination). If you agree with the notice, fill out, sign and mail the response form to the IRS. IRS Letter 2205-A indicates our member's 1040 tax return was selected for an examination. Areas include Travel and Car and Truck Expenses. Tax audit letters will include your name, tax ID number or Social Security number, employee ID number, address and contact information. We're here to help you resolve your tax problems and put an end to the misery that the IRS can put you through.