IRS Letter 3339C – Audit Reconsideration – Additional Substantiation Request
The IRS wants you to provide additional proof to support your request for audit reconsideration.
Type of Notice: Return accuracy
Likely next step: Address an IRS tax audit
Why you received IRS Letter 3339C
- You filed a tax return which was selected for audit.
- The IRS sent you notices regarding the final audit determination, but you did not respond. They assessed taxes.
- You requested audit reconsideration.
- You provided documentation to prove your position.
- The IRS sent Letter 3339C to request additional documentation.
Notice deadline: 30 days
If you miss the deadline: The IRS may deny the request for audit reconsideration or only a partial change will be made.
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