Notice CP12 - Overpayment Refund
IRC Section: IRC § 6402
Response Deadline: N/A
The IRS found a math error on your return and corrected it. Good news: you're still getting a refund — it's just a different amount than you expected. No action needed unless you disagree with their correction.
A CP12 is a math error notice that results in a refund adjustment. The IRS found a calculation error on your return, corrected it, and the correction results in a different (usually smaller) refund than you originally anticipated. This is good news compared to a CP11 — you're still getting money back.
Common Triggers
- Math correction
- Credit allowed
- Exemption change
Resolution Steps
- Step 1: Review the refund amount
- Step 2: Verify the refund method (check or direct deposit)
- Step 3: Contact us if you disagree with the calculation
- Step 4: Keep this notice for your records
- Step 5: Expect refund within 6-8 weeks
Common Questions About CP12
- What should I do if I agree with the IRS's calculation?
- Nothing. Your adjusted refund will arrive automatically as a check or direct deposit. Keep the notice for your records.
- What if my refund is smaller than I expected?
- The IRS corrected a miscalculation. If you believe the correction is wrong, contact the IRS at the number on the notice within 60 days to dispute the adjustment.
Related Notices
Additional Resources
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