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Overpayment / Refund Change Urgency: Low

IRS Notice CP12 Guide

Verified Response Guide for Taxpayers

How to respond to IRS CP12?

To respond to a CP12, review the IRS changes to your tax math that resulted in a higher refund. If you agree, no action is needed. If you disagree, contact the IRS within 60 days.

Next Steps to Resolve:

  • Verify the new refund amount
  • Compare IRS math with your return
  • Call the IRS within 60 days if incorrect
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Official Resource: View original notice details on the IRS.gov website.

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Related IRS Guides:

CP2000 Guide CP09 Guide CP501 Guide LTR525 Guide