Kaizen Time: Practical Strategy for Better Business

Major IRS Audit Triggers Every Small Business Should Understand

Written by The Kaizen Team | · January 15, 2026
 

As IRS staffing shortages continue, enforcement hasn’t slowed—it’s shifted. This discussion covers how automated data matching now drives audit selection, why mismatched K-1s, W-2s, and 1099s are quickly flagged, and how deductions like vehicle use, home office expenses, and charitable contributions often trigger follow-up reviews. We also address the growing scrutiny around cryptocurrency transactions and the risks of blending personal and business expenses. Proper documentation and disciplined accounting practices play a critical role in surviving automated IRS reviews.

Key Takeaways

  • Why IRS staffing shortages have actually increased reliance on automated audits
  • How income mismatches between K-1s, W-2s, and 1099s quietly trigger reviews
  • Which deductions raise the most red flags when software scans your return
  • Why cryptocurrency activity is drawing growing IRS attention
  • How small “personal expense creep” can compound into bigger compliance issues
  • What proper documentation really needs to look like in an automated review