What Triggers an IRS Audit?
Understanding what draws IRS attention can help you avoid unnecessary scrutiny. Here are the most common audit triggers and how to protect yourself.
Common IRS Audit Triggers
1. High Income
Audit rates increase significantly above $200,000 and dramatically above $1 million.
2. Large Business Losses
Repeatedly claiming large business losses, especially those that offset significant other income, raises questions about the profit motive.
3. Home Office Deduction
Not disqualifying, but must be legitimate and properly documented.
4. Vehicle Deductions
100% business use claims for a vehicle are scrutinized heavily.
5. Round Numbers
$5,000 or $10,000 deductions instead of specific amounts suggest estimates rather than real records.
6. High Charitable Deductions Relative to Income
Donating 50%+ of income raises flags.
7. Cash-Intensive Businesses
Restaurants, car washes, barbershops, etc. are scrutinized for income underreporting.
8. Schedule C Losses
Frequently claiming self-employment losses — especially from what looks like a hobby.
9. Missing Income
The IRS receives copies of all W-2s and 1099s. Unreported income matches trigger CP2000 notices.
10. Math Errors or Inconsistencies
Numbers that don't add up or contradict themselves on the return.
How to Protect Yourself
- Keep receipts and records for all deductions
- Maintain a contemporaneous mileage log
- Document business purpose for all expenses
- Avoid round-number estimates
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