IRS Notice CP21A – Changes to Your Form 1040

The IRS sends CP21A to inform you that the changes you requested have been made for tax year shown on the notice that resulted in a balance due.

View notice image

Type of Notice: Return accuracy

Most common tax problem area: IRS return and account problems

Other tax problem areas: IRS penalties, IRS bill for unpaid taxes

Why you received IRS Notice CP21A

  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 CP21A to notify you that the adjustment resulted in a balance due.

Your options to address IRS Notice CP21A

  1. Dispute the taxes you owe
  2. Dispute the penalties
  3. Make arrangement to pay

Notice deadline: 21 days

If you miss the deadline: Additional penalties and interest will accumulate.

Want more help?

See your local tax pro for a free consultation.

Related Topics

Related Resources

Tax Dictionary – Tax Fraud

Tax fraud is more than just leaving an item off a return. Read the IRS definition and get more insight from the tax experts at H&R Block.

Tax Dictionary – Revenue Agent Report

Get the facts from H&R Block about IRS revenue agent reports, which show the changes the IRS is proposing to your tax return after an IRS audit.

IRS Notice CP01S – Message About Your Identity Theft Claim

Learn more about notice CP01S, why you received it, and how to handle the notice with help from the tax experts at H&R Block.

IRS Notice CP27 – Important Information About the Earned Income Credit

You may qualify for an additional tax credit. Learn more about notice CP27 and how to handle this notice with help from the tax experts at H&R Block.