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How the IRS decides who gets audited

November 8, 2025

"Why me?" is one of the first questions I hear from anyone who gets an audit notice. It's a fair question. The IRS doesn't pick returns at random nearly as often as people assume, and understanding how selection actually works can tell you a lot about what to expect next.

Here's what generally drives audit selection.

1. Computer scoring flags returns that look statistically unusual

The IRS uses a scoring system that compares your return to statistical norms for similar taxpayers. Returns with deductions or credits that fall well outside the typical range for someone with similar income are more likely to be flagged for review.

This doesn't mean anything was done wrong. It means the numbers looked different enough from the norm to warrant a closer look.

2. Mismatches with third-party reporting are a common trigger

When the income you report doesn't match the W-2s, 1099s, and other information returns the IRS receives from employers, banks, and other payers, it creates an automatic discrepancy. These mismatches are often caught by IRS computer matching programs before a human ever reviews the file.

This is one of the more avoidable audit triggers, since it usually comes down to a forgotten income source or a simple reporting error.

3. Certain industries and deduction types draw more scrutiny

Cash-intensive businesses, large charitable deductions relative to income, home office deductions, and significant business losses claimed alongside other income all tend to draw more attention. This doesn't mean these deductions are improper. It means they require solid documentation because the IRS looks at them more closely.

If your return includes any of these features, keeping thorough records isn't optional. It's your best protection.

4. Related examinations can pull you in

Sometimes you get audited not because of anything specific on your return, but because a business partner, an investment, or a related entity you're connected to is already under examination. These are often called related-party or flow-through audits.

In these cases, your own return may be entirely accurate, but the connection alone brings you into the process.

5. A small percentage are simply random

The IRS does conduct some purely random examinations as part of ongoing compliance research, independent of anything specific on the return. If your audit falls into this category, there was genuinely nothing you could have done differently to avoid it.

Regardless of why you were selected, the response process is largely the same: careful review, solid documentation, and a measured, well-prepared reply.

If you've received an audit notice and are wondering why, or simply want to be prepared, reach out through blgattorney.com or call my Oklahoma City office. Let's look at what triggered it and plan your response.