CP11 Notice
The CP11 is an IRS notice informing you that they made changes to your tax return due to a math or calculation error, and that you now owe additional taxes as a result. You have the right to agree with the changes or dispute them if you believe the IRS is wrong.
Why Did You Receive This Notice?
You received a CP11 because the IRS reviewed your tax return and found what they believe is a math error or calculation mistake that resulted in you owing more taxes than you originally reported. This could be due to an error in computing a credit, a discrepancy in reported income, or a mistake in the tax calculation itself. In some cases the IRS's correction is accurate, in others, the IRS makes the error.
What Does this Mean for You?
The CP11 means the IRS has already adjusted your tax return and is now billing you for the difference. Unlike the CP2000 which is a proposal, the CP11 reflects a change the IRS has already made to your account. The notice explains what was changed and why, and shows the new amount you owe including any interest on the adjusted balance.
What Happens If You Ignore It?
Your Options
- Agree and pay: If the IRS correction is accurate, pay the balance in full or set up a payment plan.
- Dispute the change: If you believe the IRS made an error, you can call the number on the notice or write a formal response explaining your position with supporting documentation.
- Request a penalty abatement: If you agree with the tax amount but believe the penalties are unfair, you may qualify for first-time penalty abatement.
- Set up a payment plan: If you cannot pay in full, request an installment agreement.
Step-By-Step: What To Do Next
- Review what the IRS changed. The notice will explain exactly what was adjusted on your return.
- Check your original return and the supporting documents. Was the IRS right, or did they make a mistake?
- If you agree, pay the balance or set up a payment plan by the deadline.
- If you disagree, call the IRS at the number on the notice or send a written response with your explanation and documentation.
- Keep a copy of everything you send and note the date you responded.
Can You Handle this Yourself?
Many CP11 disputes are straightforward, especially if you have your original return and supporting documents handy. Pull up your tax return, find the line item the IRS adjusted, and verify whether their math is correct. If it is, paying online at irs.gov is quick and easy.
Expert Insight From Rockwater Tax
At Rockwater Tax, we see plenty of CP11 notices where the IRS is wrong. The IRS's automated processing system makes mistakes, particularly with refundable credits like the Earned Income Tax Credit or the Child Tax Credit, and with education-related deductions. Before you pay a CP11, make sure you actually agree with what the IRS changed. We have had clients come to us after paying CP11 balances they did not owe, getting that money back is a much longer process than disputing the notice in the first place.
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FAQ
Q: Is a CP11 the same as an audit?
A: No. A CP11 is generated by the IRS's automated processing system and reflects a math correction, it is not a full examination of your return.
Q: What if I disagree with the CP11?
A: Call the IRS at the number on the notice or send a written response with your documentation. You have 60 days from the date on the notice to dispute it.
Q: Can I request a payment plan for a CP11 balance?
A: Yes. You can request an installment agreement even if you disagree with part of the balance.
Q: What if the amount is small, is it worth disputing?
A: Always verify the notice is accurate before paying. Even small amounts add up, and you have the right to dispute incorrect assessments regardless of size.
