IRS Notice CP21C – Changes to Your Form 1040

The IRS sent CP21C to notify you that data processing adjusted your tax return, resulting in a zero balance.

View notice image

Type of Notice: Return accuracy

Most common tax problem area: IRS return and account problems

Other tax problem areas: N/A

Why you received IRS Notice CP21C

  1. After you filed your tax return you discovered an error.
  2. You either contacted the IRS to correct the error or filed an amended return.
  3. The IRS corrected the error and made an adjustment to your return.
  4. The IRS sent CP21C to notify you that the adjustment resulted in a zero balance on your return.

Your options to address IRS Notice CP21C

No response required

Notice deadline: N/A

If you miss the deadline: N/A

Want more help?

See your local tax pro for a free consultation.

Related Topics

Related Resources

IRS Notice CP49 – The IRS Applied Your Refund to Taxes Owed

What is IRS Notice CP49, and what does it mean for you? Learn more about your options. Get tax answers from the tax experts at H&R Block.

IRS Letter 566D – Initial Contact Letter

Learn more about letter 566D, why you received it, and how to handle an IRS audit with help from the tax experts at H&R Block.

IRS Letter 4527C – Why We Are Returning Your Form

Receive an IRS 4527C letter? Learn more about letter 4527C, why you received it, and how to handle it with help from the tax experts at H&R Block.

How to Use First-Time Penalty Abatement

Get the facts from H&R Block about the widely available but little-known IRS penalty relief option called first-time penalty abatement.