Dispute a CP2000 with a statement the IRS can follow
T Tax Letter Desk Pricing Questions Contact Sign in Check my notice, free Pricing Questions Contact Sign in Check my notice, free Home
Guides
Dispute a CP2000 with a statement the IRS can follow
By Tax Letter Desk Updated November 4, 2026
Short answer
Mark the box on the Response form for the changes you disagree with.
Add a signed statement explaining why, with the documents you want the IRS to consider.
Send it all by the date on the notice, by upload, fax or mail.
Checked November 4, 2026 against IRS Topic 652 (Oct 16, 2026) , IRS Pub 5181 (Dec 2022) .
In this article
What does the IRS ask for?
What makes a statement easy to follow?
How should I send documents?
What if a payer’s form is wrong?
What happens after I send it?
Questions
What does the IRS ask for?
Mark the appropriate box on the Response form if you disagree with some or all of the changes.
Reply with a signed statement explaining why. Include any documents you want considered.
What makes a statement easy to follow?
Pub 5181 gives these tips for a reply.
Address each issue in the notice.
Name the line or schedule where you reported the amount.
If it’s part of a larger total, break that total down.
Didn’t receive it, or think it isn’t taxable? Say so.
Can’t document an amount? Explain how you figured it.
Dispute one item or more: $179. The check comes first, free.
How should I send documents?
Send photocopies, not originals.
If you fax, put your name and SSN or taxpayer ID on each page.
Uploads accept photos or scans as JPG, PNG or PDF files.
What if a payer’s form is wrong?
Ask the payer for a corrected document, or a statement on why it’s wrong.
Send a copy with your response.
What happens after I send it?
If the IRS accepts your explanation, it sends a letter saying it accepts your return as filed.
If it accepts some issues but not all, it sends a revised notice with only what’s left.
If it doesn’t accept it, it tells you why.
The letters that may follow your reply
Sources
Topic no. 652, Notice of underreported income, CP2000 IRS, updated October 16, 2026
Understanding your CP2000 series notice IRS, updated July 14, 2026
Publication 5181, Tax return reviews by mail (PDF) IRS, revision December 2022
Questions
No. You can disagree with some or all of the proposed changes. Address each one you dispute.
No. Pub 5181 asks for photocopies, not originals.
Without a reply by the response date, the IRS sends a Statutory Notice of Deficiency.