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CP2000 response letter

Explains a mismatch between what a third party reported and what you filed, agreeing in part or disagreeing with documents attached.

By Ben Reyes, Tax Writer

Last reviewed September 21, 2026

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Your name (as on the return)

Your address

Last four digits of SSN or EIN

Tax year

Return type

Date of this letter

Date on the CP2000

Items you agree with

Items you disagree with

Explanation for each disputed item

Documents you are attaching

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Before you send it

Return the signed response form with this letter. Address every item the notice lists, even the ones you agree with. Do not file an amended return for CP2000 items.

Before you send anything

This is general information, not tax advice. Situations differ. Check with your tax advisor before you send anything. Nothing on this page creates a client relationship.

CP2000 response letter

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Before you send it

Before you send anything

Your letter