Example audit letters from the IRS and state taxing agencies. Tax audit letters will include your name, tax ID number or Social Security number, employee ID number, address and contact information.An Initial Contact Letter is your notification that your tax return has been selected for an audit (also called an examination). If you received a letter from the IRS, don't ignore it. Follow the directions on your letter, it includes all the information you need to respond. Sending an IRS audit reconsideration request? An IRS letter will clearly state the reasons for a review and audit, and the year the taxpayer filed the return.