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CP21B notice: what it means and what to do
Got an IRS CP21B notice? Here is what it means, your deadline, what to check before you answer, and how to reply. Check your own letter free: it stays on your phone.
Check my CP21B notice freeWhat the IRS says this notice is about
We sent you this notice because we made the changes you requested to your tax return for the tax year specified on your notice. You should receive your refund within 2-3 weeks of your notice.
What you need to do
- If you disagree with the changes we made, contact us at the number shown in the “What you need to know” section of your notice.
- Correct the copy of your tax return that you kept for your records.
- Be sure to report any interest we paid you on your tax return for this year. For more information on reporting interest income, see About Form 1099-INT, Interest Income .
Your deadline
Answer by the date printed on your notice. If there is no date, answer as soon as you can, and call the number on the notice if you need more time.
What to check before you answer
You have 60 days to disagree
If you disagree with the change and ask in writing within 60 days of the notice date, the law requires the IRS to reverse it. If the IRS still disagrees, it must then use the regular process, which keeps your appeal rights.
Is this letter really from the IRS?
The IRS writes first by mail. A real letter shows a notice or letter number, your name and part of your tax ID number. The IRS does not ask for payment by gift card, crypto or wire transfer. If in doubt, sign in to your IRS online account, where many notices are listed.
Common questions
What if I don't receive my refund in 2-3 weeks? (updated Nov. 4, 2024)
If you don't owe other taxes or debts we're required to collect, such as child support, and 3 weeks have lapsed, call us at number shown in the “What you need to know” section of your notice.
Will I receive information about the interest that I need to report on my next tax return? (updated Nov. 4, 2024)
If you receive any interest, you must report this amount on your tax return.
If you receive $10 or more in interest, you'll receive a Form 1099-INT, Interest Income, by Jan. 31 of next year.
I don't remember sending a request to IRS to change my return. How can I find out what IRS received to initiate this change? (updated Nov. 4, 2024)
Call us at the number shown in the “What you need to know” section of your notice.
What if I need to make another correction to my account?
You'll need to file Form 1040-X, Amended U.S. Individual Income Tax Return .
What if I haven't gotten answers after contacting IRS several times?
Call the Taxpayer Advocate at 877-777-4778 or for TTY/TDD 800-829-4059 .
What if I think I'm a victim of identity theft? (updated Nov. 4, 2024)
Call us at the number shown in the “What you need to know” section of your notice. Refer to Identity Theft Central for more information.
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