VALID › Notice Library › CP05B notice

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

CP05B notice explained, in the IRS’s own words

We issue a CP05B notice when the IRS receives a tax return that shows a refund is present, but the income shown on the return does not match the income reported by third party documentations like Forms W-2, W-2G, or 1099. We’re holding your refund until we receive the information requested from you to determine your reported income is correct.

Read the full CP05B page on irs.gov ↗

Quoted from www.irs.gov/individuals/understanding-your-cp05b-notice, read October 15, 2026 · fingerprint 017b500b3cfb · 1 line left out here (see irs.gov)

What this notice is about

We issue a CP05B notice when the IRS receives a tax return that shows a refund is present, but the income shown on the return does not match the income reported by third party documentations like Forms W-2, W-2G, or 1099. We’re holding your refund until we receive the information requested from you to determine your reported income is correct.

  • If the information supports your return, we’ll release your refund.
  • If the information doesn’t support your return or if we don’t receive a response, we’ll disallow all or part of your refund or notify you if you owe.

What you need to do

Read your notice carefully to gather required documentation and reply by the date shown on your notice. To reply, follow the steps below:

  • Collect copies of supporting documentation to send to us by the date shown on your notice.
  • Tear off the voucher on the last page of your notice and attach it to the documents you're submitting.
  • Mail your supporting documentation to the address printed on the voucher.

If you don’t receive your refund or hear from us within 60 days, call the number on your notice to inquire about the status of your return. Please do not call us before 60 days.

You may want to

  • Review this notice with your tax preparer.
  • Track your refund status online or in the IRS app.
  • Consider an IRS Identity Protection PIN to help prevent misuse of your taxpayer identification number on fraudulent federal income tax returns.
  • Contact the Taxpayer Advocate Service (TAS) if you’re experiencing economic harm. TAS is an independent organization within the IRS that can help protect your taxpayer rights. TAS can offer you help if your tax problem is causing a hardship, or you've tried but haven't been able to resolve your problem with the IRS. Visit Taxpayer Advocate Service or call 877-777-4778.

Why is my return being reviewed?

While we accept most tax returns as filed, we select some for review. The IRS reviews some federal tax returns to determine if income, expenses, and credits are reported accurately. The IRS selects returns for review using various methods; including random sampling, computerized screening, and comparison of information received by the IRS such as Forms W-2 and 1099. Having your return selected for review does not suggest that you made an error or were dishonest.

What if I did not file a tax return claiming the items you are questioning and someone else is using my name and Social Security number?

Someone else may have filed it for you without your consent. Download and complete Form 14039, Identity Theft Affidavit PDF and mail it to the return address provided on the notice you received.

You may want to consider using an IRS Identity Protection PIN to prevent future misuse of your taxpayer identification number on fraudulent federal income tax returns. Visit IRS.gov/id for more information about tax-related identity theft.

Tips for next year

Review all of your income and withholding documents for completeness and review your return to make sure you are eligible to claim all income, credits and business income that you reported.

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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