Money What triggers an IRS audit? Here are red flags that increase the chance of being audited March 2, 2023March 3, 2023 Elisabeth Buchwald, USA TODAY Comments Off on What triggers an IRS audit? Here are red flags that increase the chance of being audited What triggers an IRS tax audit? Make sure to correctly report your income from a W-2 or similar tax form. If you don't it may trigger an audit.