The IRS has several methods of selecting returns for a tax audit. First, returns are identified that may possibly contain incorrect amounts, causing a review of the return by an auditor. If everything on your return checks out, the auditor can accept your return as submitted. If the auditor suspects that something is amiss, your return can be selected for an examination.
How Returns Are Selected for Audit
The IRS can select your return for an audit if any of the following happens: