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In the IRS’s own words · not reviewed by VALID

CP18A notice explained, in the IRS’s own words

This notice provides identity protection steps, answers to common questions, IRS contact information, and additional resources for taxpayers whose personal information may have been compromised.

Read the full CP18A page on irs.gov ↗

Quoted from www.irs.gov/individuals/understanding-your-cp18a-notice, read October 15, 2026 · fingerprint 482c4cf37c58

What this notice is about

This notice provides identity protection steps, answers to common questions, IRS contact information, and additional resources for taxpayers whose personal information may have been compromised.

You may want to

  • Get an Identity Protection Personal Identification Number (IP PIN) to use on your future tax returns. The letter will instruct you to either request an IP PIN using the online Get an IP PIN tool, follow the instructions to file an application for an IP PIN PDF PDF or request in-person authentication.
  • Place a fraud alert on your credit file by contacting one of the following credit reporting agencies. You only need to contact one of them. The agency you contact will notify the other two.
  • Note: spouses and dependents are eligible for an IP PIN if they can pass the identity proofing process.

Credit reporting agency Telephone number

Equifax 800-525-6285

Experian 888-397-3742

TransUnion 800-680-7289

  • Check if a credit file exists for your minor child (under 18) if we told you we lost or disclosed their personal info. Contact one of the three credit reporting agencies listed above to see if a file exists or if your child's identity may have been misused.

What if I have questions?

Call 866-225-2009 (or 267-466-0777, for international callers), to speak to an IRS representative.

Can my power of attorney (POA) contact the IRS about this data loss, theft, or disclosure?

Yes. When filling out Form 2848, Power of Attorney and Declaration of Representative PDF PDF, you must specify “IRS breach,” “IRS data loss,” or “IRS information loss” on line 3 as the “Description of Matter.” If you don’t, we can’t discuss this matter with your POA.

What to do next

  • Write down the date on the letter today.
  • Look the number up on irs.gov yourself. Don’t trust a link or phone number from anyone else.
  • If it says you owe money or proposes changes to your return, take it to a licensed CPA, EA or tax attorney before that date.

Not advice. Not a filing. Verify with a licensed professional. Rules change by year and facts.

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