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IRS Letter 556 – Acknowledgement of Protest, Correspondence, or Request for Interview

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The IRS sent Letter 556 to notify you that your correspondence has been received.

Type of Notice: Return accuracy

Likely next step: Address an IRS CP2000 underreporter inquiry

Also see: IRS tax audit

Why you received IRS Letter 556

  1. You sent the IRS correspondence:
    • requesting an appeals conference,
    • requesting an interview to discuss an issue
    • requesting audit reconsideration, or
    • protesting an IRS decision.
  2. The IRS sent the letter to acknowledge receipt of the correspondence.

Notice deadline: N/A

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