IRS Notice CP21B – Changes to Your Form 1040
The IRS sent CP21B to notify you that data processing made a change to your return, and a refund is now due to you.
Type of Notice: Return accuracy
Most common tax problem area: IRS return and account problems
Why you received IRS Notice CP21B
- After you filed your tax return you discovered an error.
- You either contacted the IRS to correct the error or filed an amended return.
- The IRS corrected the error and made an adjustment to your return.
- CP21B was sent to notify you that the adjustment resulted in a refund or an increase in your refund. The IRS will issue the refund in two to three weeks.
Notice deadline: N/A
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