At a Glance: Understanding Your IRS Notice CP11
What it means
IRS Notice CP11 notifies you that an error or miscalculation has been found on your tax return, resulting in a balance due.
How serious is it
You will have a notice deadline of 60 days to respond to the IRS or pay your tax debt. If you do not take action, additional penalties and interest will be added to your account.
What to do next
Look for any issues with your CP11 notice:
- Do you agree with the amount the IRS claims you owe?
- If you disagree, you have the right to dispute the IRS.
- Do you have the means to pay the full amount?
- If paying in full would create a financial hardship, you may qualify to settle the debt for less than the full amount. You may also qualify for a payment plan.
- Is this your first time receiving a tax penalty?
- You may qualify to eliminate some of those penalties through the first-time penalty abatement program.
If you agree with the balance due and have the means to pay it, paying as soon as possible will help you avoid additional interest and penalty charges.
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What Is a CP11 Notice?
A CP11 Notice means that the IRS processed your tax return, discovered an error, and adjusted it. This resulted in a balance due on your taxes that you must pay within 60 days of receiving the letter. The CP11 Notice will indicate specific corrections to your return, explain why they were made, and tell you how much additional tax you owe, plus any penalties and interest.
This CP11 Notice includes:
- Tax Year
- Amount Due
- Payment Deadline
- Payment Options
- Changes to Your Tax Return
- Failure-To-File Penalty and Interest
- IRS Contact Information
CP11 Notice Example

Resolving Your CP11 Notice
It is important to carefully read this notice, as it will outline the problems discovered on your tax return and suggest additional steps for you to take. If you require any clarification or disagree with the CP11 notice, contact the IRS within the notice deadline.
How Do I Respond to the IRS CP11 Notice?
First, review your notice and the adjustments made to your account. If you agree with it and understand the amount due, you can pay the bill online or by mail before the deadline.
If you disagree with your CP11 tax notice and want to dispute the changes or the amount owed, you must contact the IRS with an explanation and any supporting documents. It is your responsibility to initiate contact with the IRS, otherwise, they will assume you agree with the notice if they do not hear from you.
For peace of mind, you may want to consult a tax professional to review your situation, especially if the amount is significant or you’re unsure about the IRS’s calculations.
Can I Dispute CP11 Notice?
Yes, you have the right to dispute your CP11 IRS Notice. If you disagree with the changes made to your tax return or the amount it claims you owe, you must contact the IRS within 60 days of receiving it.
Get tax relief today
Qualify for tax relief and resolve your tax issue for good.
Beware of IRS Tax Scams
Warning: The IRS initiates contact only through official postal mail. Anyone who claims to be the IRS demanding immediate payment or personal information through calls, emails, or social media may be a scammer.
- Never provide sensitive information via email, text, or social media.
- Real IRS agents never make aggressive threats like arrest or deportation.
- The IRS will never demand gift cards, wire transfers, or cryptocurrency.
- Look out for fake IRS badge numbers and caller ID spoofing.