Understanding Your CP01C Notice

We issue the CP01C notice to taxpayers who are not currently impacted by tax-related identity theft. The notice advises taxpayers that we marked their account with an identity theft indicator and provides additional information and resources for identity protection.


What you need to do

  • Review the notice for next steps and resource information.
  • Continue filing all federal tax returns.
  • Continue sending your payments, if you owe a balance due.

You may want to


Answers to common questions

What effect does the Identity Theft Indicator have on my account?

The indicator assists the IRS in identifying you as the valid owner of the Social Security Number (SSN) that is shown on your tax return. The indicator has no effect on your ability to file your tax return, make payments, or receive a refund.

How long does the indicator remain on my account?

The indicator will remain on your tax account, unless you specifically request it be removed, because you indicated you are at risk of becoming a victim of tax related identify theft.

Who should I contact if I have more questions about my account related to identity theft?

You can call the IRS at 800-908-4490 for assistance specific to identity theft. The number can be found on your notice. For all other tax account related questions, contact the IRS help desk at 800-829-1040.


Tips for next year

File your return as you normally would.

Printable samples of this notice (PDF)

Need Help?

  • You can authorize someone to contact the IRS on your behalf.
  • See if you qualify for help from a Low Income Taxpayer Clinic.
  • If you can’t find what you need online, you can call the IRS at the 800, 866, or 888 number listed on the notice.