When that knock comes on your door and you want to hide because you know it's the IRS there are some simple things you should do and not do. First and foremost you will want to consult with a qualified tax professional. You will typically want to then file all of your tax returns. It doesn't matter if you can afford to pay the IRS or not. Not filing your tax returns is a crime! Do your part to be cooperative and meet the deadlines discussed in the IRS correspondence. Lastly, treat IRS employees with respect, even if you don't want to.