Your Tax Letter Scan result

CP23Return change

The IRS changed your return and shows a balance.
Estimated tax difference, balance due.

Start hereCompare the payment recordsKeep the original letter and its envelope with your records.

These results are general information generated by software. They are not legal advice, no attorney has reviewed them, and they may not capture everything in your situation. No attorney-client relationship exists between you and anyone as a result of this diagnostic.

Tax Letter Scan is a self-directed technology platform that provides general educational information. It does not provide legal, tax, accounting, or financial advice, and it does not create an attorney-client or other professional relationship. No professional reviews your scan or any generated materials. You decide how to proceed and should consult a qualified professional for advice about your facts.

What this code means

The IRS says it corrected your return because the estimated tax payments on your return differ from what it posted to your account, and the changes produce a balance due. The notice may also cover other processing changes.

Check this on your paper

Compare the payments listed on the notice with your records, including any payment applied from the prior year.

General next-step checklist

  1. 01

    Verify the notice lists all estimated tax payments you actually made.

  2. 02

    If you agree, pay by the date on the notice or review payment-plan options to limit added penalties and interest.

  3. 03

    If a payment is missing or misapplied, call the number on the notice with cancelled checks or other proof in hand.

What this result cannot tell you

This tool cannot verify what the IRS posted to your account or which payments were credited.

This is a category, not a prediction.

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The Action Pack

A deeper, notice-specific workbook you can print, mark up, and keep with the letter. Built for the CP23.

No professional reviews, approves, or personalizes this pack. It is general educational information, not advice.

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  • Common response paths, without choosing one for you
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