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

Also see: IRS penalties, IRS bill for unpaid taxes

Why you received IRS Letter 3339C

  1. You filed a tax return which was selected for audit.
  2. The IRS sent you notices regarding the final audit determination, but you did not respond. They assessed taxes.
  3. You requested audit reconsideration.
  4. You provided documentation to prove your position.
  5. 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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