Because talking to them on even the smallest matter can land you in trouble, since lying to federal agents is a crime. TurboTax has this audit defense insuranc

Because talking to them on even the smallest matter can land you in trouble, since lying to federal agents is a crime. TurboTax has this audit defense insurance add-on when you submit your taxes. If you read the verbiage, it explicitly states DO NOT answer any questions under any circumstances, and defer them to the audit defense. Don't even answer "How is the weather over there?" It's best to have some representation when dealing with the IRS or any federal agency. As the video continues on to show, Martha Stewart was convicted for lying because she decided to talk first and deny involvement before lawyering up.