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IRS CP11:here's whatit means.
Changes to your return, balance due. The IRS corrected what it believes is an error on your return, and the change left you owing money.
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What is IRS CP11?
Changes to your return, balance due. The IRS corrected what it believes is an error on your return, and the change left you owing money. Pay or dispute by the date on the notice. You generally have 60 days to request the change be reversed.
Updated November 2026. Serving all of California online.
Deadline
Pay or dispute by the date on the notice. You generally have 60 days to request the change be reversed.
If you ignore it
The balance moves into the collection notice cycle with penalties and interest.
What to do now.
- 1Compare the IRS change to your return line by line.
- 2If you agree, pay or set up a payment plan by the date on the notice.
- 3If you disagree, contact the IRS within 60 days to request the change be reversed.
General information, not legal advice. The exact deadline is printed on your notice.
Common questions.
Is IRS CP11 real or a scam?
Real IRS notices arrive by U.S. mail, not by text, social media, or a surprise phone call demanding payment. To verify, compare it with your IRS online account or call the number listed on IRS.gov, not a number from a suspicious message. We can check it for you.
Can MM.TAX respond to IRS CP11 for me?
Yes. Our practice is led by an IRS Enrolled Agent. We file a power of attorney (Form 2848), pull your transcripts, and respond to the IRS for you, online anywhere in California.
What if I can't pay what the IRS says I owe?
You have options: an installment agreement, an Offer in Compromise if you qualify, penalty abatement, or currently-not-collectible status during hardship. The right choice depends on your income, assets, and the amount owed.
IRS notices
Look up another letter.
- CP14Balance due
- CP501Reminder: unpaid balance
- CP504Notice of intent to levy
- LT11Final notice of intent to levy
- CP2000Proposed changes to your return
- CP3219ANotice of deficiency
- Letter 3172Federal tax lien filed
- Letter 566Audit or examination
- CP2501Income doesn't match your return
- CP59No record of your tax return
- CP161Business balance due
- LT16Contact us about overdue taxes
- Letter 1153Trust fund recovery penalty proposed
- Form 668-ABank or wage levy
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Free 30-minute review with a senior advisor. Call the online team or answer a few questions.