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IRS · Proposed Change

CP2000Proposed Income or Payment Adjustment

Information from a third party does not match the filed return. The proposed adjustment is not itself a bill.

Reviewed October 10, 2026 • Free Action Plan
Go to Your Next Steps
Know Your Response WindowReply by the Date on Your CP2000

Use the response date printed on the actual notice. The IRS allows a request for more time through an accepted reply route; do not assume it has been granted. A later CP3219A has a separate court deadline that the IRS cannot extend.

Verify with the Agency
Make an Informed Choice

What You Can Handle.
When to Bring in Help.

DIY May Be Appropriate If…

  • You can match each proposed adjustment to the return and payer records.
  • The disagreement can be explained with clear evidence.
  • You have enough time to respond and have not received a later deficiency notice.

Get Professional Help If…

  • You cannot explain the proposed change or supporting tax treatment.
  • The issue involves securities basis, business expenses, identity theft, or multiple years.
  • A CP3219A arrives or the response date is close.
  • The payer will not correct an inaccurate information return.

You can contact the agency yourself. These conditions help you judge complexity; they do not determine eligibility or guarantee a result.

Put the Information to Work

Your Step-by-Step Plan

Choose the situation that matches your records. The steps help you prepare and respond; the agency decides your case.

0 of 5 steps checked

  1. List Every Proposed Difference

    Record each payer, reported amount, proposed adjustment, and affected tax year. Match it to the filed return rather than looking only at the final proposed balance. CP2000 is a proposal, not itself a bill.

    IRS: Understanding Your CP2000 Series Notice

  2. Assemble the Evidence

    Gather the return, W-2s/1099s, corrected payer forms, payment records, and relevant supporting calculations. If a payer’s report is wrong, request a correction. For a transaction with deductible costs or basis, obtain the underlying records before deciding whether the proposed tax is correct.

    IRS: Tax Records and Transcripts

  3. Write a Specific Response

    Use the response form if included. State agreement or disagreement as instructed, explain each disputed item, and attach relevant copies. Keep your explanation connected to the numbered or identified items on the notice.

    IRS: Understanding Your CP2000 Series Notice

  4. Send Through an Accepted Channel

    Follow the current IRS notice page for secure upload, or the fax or mailing location matching your notice. Save the exact response and submission confirmation. A submission to Liberty Standard does not go to the IRS.

    IRS: Document Upload ToolIRS: Understanding Your CP2000 Series Notice

  5. Check the Next IRS Letter

    Retain the agency’s determination or request for more information. If the issue is unresolved and you receive CP3219A, stop using the CP2000 response date and review the new petition deadline immediately.

    IRS: Understanding Your CP3219A Notice

Checkmarks are for your use on this page. They are not sent to an agency or stored as a case record.

Go to the Right Place

Who to Contact

IRS Office Listed on Your Notice

Use the telephone number and correspondence address on the verified notice. Have the notice, tax year, return, and payment records ready. The official explanation below confirms the intended response route.

Official Contact Route

IRS Online Account

Review available balance and payment information. An account inquiry is not a formal appeal or a substitute for a required written response.

Official Contact Route

IRS Document Upload Tool

Use the access instructions from the current official CP2000 page or your notice. Uploading evidence does not automatically resolve the proposal.

Official Contact Route

Use the correct contact for your notice. Keep copies, reference numbers, and notes of any conversation.

Prepare Before You Respond

Records & Forms

  • Every page of the notice and its envelope.
  • The filed return for each period listed.
  • Payment confirmations, cancelled checks, or bank transaction records.
  • Earlier notices, submitted responses, and agency confirmations.
  • Every payer form and any correction.
  • Calculations and transaction records supporting disputed income, credits, withholding, or basis.
CP2000 Response Form

Use the form supplied with your own notice, if included.

Form 1040-X, Only If Applicable

Follow CP2000-specific instructions when additional income, credits, or expenses also require correction.

Form 2848

For eligible representation beyond a limited notice authorization.

Keep these records in your own secure files. The Liberty Standard inquiry form is for general information only.

Match the Expertise to the Work

Which Professional Could Help?

Enrolled AgentCPATax AttorneyTax Return Preparer

A preparer can help reconcile return calculations; an authorized representative can handle the IRS dispute. Legal complexity or a deficiency notice warrants further review.

Compare Roles & Verify Qualifications
Support by Choice

Choose How to Find Help.

Exploring help with CP2000? Include that notice in your inquiry without sending the document itself.

Liberty Standard Resources

Find the Right Support.

Tell us what you need and the kind of professional you are looking for. Our network is in development. Any proposed introduction requires review of availability, credentials, and the work involved.

Request a Professional Connection

Your request does not arrange an introduction or engage a professional. Any proposed scope, fees, and terms must be explained before you decide.

Close the Loop

Know What Happens Next.

  • The IRS accepts the explanation or changes the proposal.
  • The IRS requests additional evidence.
  • An agreed adjustment creates or changes a balance.
  • An unresolved proposal can proceed to a statutory notice of deficiency.

Sending a request does not mean the issue is resolved. Verify receipt, keep the response date visible, and follow the agency’s written determination.

The Source Behind the Steps

Official Sources

IRS: Understanding Your CP2000 Series Noticewww.irs.govIRS: Tax Records and Transcriptswww.irs.govIRS: Document Upload Toolwww.irs.govIRS: Understanding Your CP3219A Noticewww.irs.govIRS: Payment Plans and Installment Agreementswww.irs.govIRS: Temporarily Delay the Collection Processwww.irs.govIRS: Form 2848, Power of Attorneywww.irs.govIRS: Tax Return Preparer Credentials and Qualificationswww.irs.gov

General education, not a professional engagement or an individualized tax or legal determination. Use the current agency instructions and the deadlines on your actual notice.

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