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IRS Letter 861C – Power of Attorney, Tax Information Authorization and/or U.S. Estate Tax Return Incomplete for Processing

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The IRS sends Letter 861C to a taxpayer or a tax professional when an authorization form, such as Form 2848, 8821 or 706, is incomplete or there is a problem with the authorization.

Type of Notice: Account information or change

Likely next step: Research your IRS account

Why you received IRS Letter 861C

  1. You filed a Form 2848, 8821 or 706 with the IRS.
  2. The form was incomplete or there was another type of problem.
  3. The IRS sent Letter 861C to request additional information.

Notice deadline: None specified

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