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IRS Notice CP11: Changes to your return: you owe

IRS Notice CP11 is a return adjustment letter from the IRS. The IRS corrected one or more mistakes on your return, and the amount you owe changed. It explains a change the IRS made while processing your return. Check the details against your own records and the letter itself.

What this letter usually means

The IRS corrected one or more mistakes on your return, and the amount you owe changed. Compare the IRS figures with your copy of the return, line by line. The letter explains how to respond if you disagree.

Category: The IRS changed your return

What people usually do first

If you agree, pay by the date on your notice. If you disagree, contact the IRS at the number on your notice by the date shown.

What to have ready

What may come next

This letter does not point to a specific follow-up letter. Any later step will be described in mail from the IRS.

Read the IRS page

The IRS letter itself is the final word on what it means for you. Read the IRS page for CP11.

Common questions about CP11

What is IRS notice CP11?

The IRS corrected one or more mistakes on your return, and the amount you owe changed.

How long do I have to respond to a CP11 notice?

The date to respond or pay by, if there is one, is printed on your letter. Check it, and read the IRS page for CP11 for more.

Is a CP11 notice a scam?

A real CP11 comes by mail and should match your own records. You can also sign in to your IRS Online Account on irs.gov to see your account directly.

What should I have ready for a CP11 notice?

The letter, every page, Your copy of the return, Records of any payments you have made, Records for any item the IRS changed.

The OweRight app explains the CP11 letter type in plain English.

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OweRight is not the IRS and does not give tax or legal advice.

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