Notice

CP2000

Last reviewed: May 2026

CP2000 usually proposes a change to tax based on information the IRS believes does not match the return.

Handle this IRS notice

This page explains the proposed-change notice in plain English and points you to the official IRS help pages before you decide how to respond.

This kind of notice is a records-and-explanation project, not just a payment decision.

How this notice usually works

What it usually means

This is usually a proposed-change or underreporting notice, not necessarily a bill.

Why you usually got it

The IRS generally sends this type of notice when return entries do not match the information the IRS received from other sources.

What to do first

Compare the notice to your filed return and all income or withholding documents, then respond by the date on the notice.

Time-sensitive note

If you miss the response window, the proposed change can move forward.

Who this is for

People looking for a clearer, calmer path through this tax issue.

When to use this page

Use this page when you need a practical next step, not just a definition.

What to gather

  • Relevant income records
  • Statements, receipts, or notices
  • Tax-year-specific forms if needed

Forms that may matter

  • Forms depend on the page topic

Step-by-step

  1. Use the summary to decide if this page matches your situation.
  2. Gather the records listed here before making a tax decision.
  3. Follow the step-by-step actions and move into the related tool or next page.

Official sources

Sources and authority

Sources 2/2 Good source coverage Updated May 2026
IRS

IRS

TaxHackAI Help Center

Authority source

Action plan

Notice response checklist

Use the dashboard to keep the notice, supporting records, and your review steps connected before you answer or pay.

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Do first

Watch the deadline

Understand the issue

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Next best action

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