So an Auditor has come to your house and you want to know what you should know. Here's what you should know. Auditors are very often very nice lovely people but their job is not to be your friend. The job of an Auditor is to find out if you've been entirely truthful on your tax return and if you have the documentation necessary to support your deductions. So while they might be perfectly affable people they do not represent you. If you want someone to represent you in an audit you will need to hire your own tax professional to do so. Remember the adage that an attorney who represents himself, or herself, has a fool for a client. If it's true of an attorney, it's probably true for you.