Open the Letter

Identity and verification

CP01C

Identity claim reviewed — no tax fraud found

What this notice is

A CP01C says the IRS reviewed your identity theft claim, found no tax-related fraudulent activity, and still placed a protective indicator on your account as a precaution. It is a good outcome with a monitoring plan attached.

What the IRS is generally saying

“We checked — no fraudulent tax activity turned up under your number. We've marked the account protectively anyway and will monitor it. File and pay as normal; consider an Identity Protection PIN for extra security.”

Does this type carry a deadline?

Nothing is owed and nothing is wrong at the IRS. The remaining work is ordinary identity hygiene — credit monitoring, the optional IP PIN — done on your own schedule.

What people usually gather
  • The notice, for your records
  • Credit reports from the three bureaus
  • An IP PIN application, if you want the added lock
  • Nothing for the IRS — no response is requested
What a licensed professional handles
  • Setting up the IP PIN and building it into future filings
  • Reviewing account transcripts for anything the initial check might have missed
  • Coordinating non-tax identity protection steps
  • Being the contact point if anything suspicious surfaces later
This explanation of the notice type is compiled from the IRS’s own published description (retrieved 2026-08-21): irs.gov/individuals/understanding-your-cp01c-notice. It describes the notice type in general — not your letter, and not your situation.

The next step

Holding a CP01C and want it handled?

Fifteen quiet minutes with a licensed professional usually settles what a letter means and what the sensible next step is. No pressure, no scare tactics, and nothing sensitive needed to start the conversation.

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