IRS CP11 Notice — How to Respond

The IRS changed your return and says you owe more — here's what to do.

A CP11 notice means the IRS found a miscalculation or error on your tax return, corrected it, and determined you owe additional tax. You have 60 days to either pay or dispute the change.

Why Did I Receive a CP11?

• A math error on your return resulted in a lower tax than you actually owe
• A credit or deduction was disallowed or reduced by the IRS
• A filing status change affected your tax liability
• An exemption or deduction was calculated incorrectly

What Should I Do?

Review the notice carefully to understand exactly what the IRS changed. Compare it to your original return. If you agree, pay the amount shown. If you disagree, you must respond in writing with documentation within 60 days.

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