Once you understand what your CP2000 notice is saying, the next question is what to do about it. The IRS gives you three options: agree with the proposed changes, disagree with them, or partially agree. Each path has a different process, different paperwork, and different outcomes – and choosing the wrong one, or responding without the right documentation, can cost you.

This is where most CP2000 recipients make avoidable mistakes. Some agree to proposed amounts they could have challenged. Others send a dispute without the evidence needed to support it. A few try to split the difference without understanding how partial agreement responses work – and end up confusing the process rather than resolving it.

The articles in this section are designed to eliminate that confusion. Each one covers a specific response path in detail, including what the IRS expects to receive, how to structure your response, and what documentation you need to support your position.

The Three Response Paths

Your CP2000 response form asks you to indicate your position on the proposed changes. The path you choose determines what you send back and what the IRS does next.

Agreement means you accept the IRS’s proposed adjustments in full. You sign the response form, and the agency processes the additional tax, interest, and any penalties. This is the simplest path, but it is only the right one if the IRS’s figures are accurate and you have no offsetting deductions or credits that reduce what you actually owe.

Disagreement means you believe the proposed changes are wrong – either because the income was already reported correctly, because it was not taxable, or because the IRS has made a calculation error. A dispute requires a written explanation and supporting documentation. The strength of your evidence determines the outcome.

Partial agreement means you accept some of the proposed changes but dispute others. This is more common than people expect – a 1099 might be correct but the IRS may have missed an offsetting expense, or one income item might be accurate while another is not. Partial agreement responses require careful structuring to make your position clear.

What This Hub Covers

Each article below addresses a specific decision point in the response process. Read the one that matches your situation, or work through them in order if you are still deciding how to proceed.

• Agreeing With a CP2000: What Happens Next – What the agreement process looks like, how long it takes, and what to do if you agree but cannot pay the full amount owed.
• Disagreeing With a CP2000: Step-by-Step Guide – How to build and submit a formal dispute, including how to frame your written explanation and what the IRS does with it.
• Partial Agreement: How to Respond Correctly – The mechanics of a split response, how to indicate which items you accept and which you dispute, and how to avoid ambiguity that delays resolution.
• What Evidence Do You Need to Dispute a CP2000? – A practical guide to the documents that support common dispute scenarios, from unreported income disputes to basis calculations on stock sales.
• How to Organize Documents for a CP2000 Response – How to package and present supporting documents so the IRS reviewer can follow your position without ambiguity.
• When Should You Get Professional Help for CP2000? – An honest framework for deciding whether to handle your response yourself or bring in a CPA, enrolled agent, or tax attorney.

Where To Start

If you have already reviewed the notice and know which position you are taking, go directly to the article for that response path. Each one is self-contained and written to be actionable without needing to read the others first.

If you are still unsure whether the IRS’s proposed figures are correct, start with the evidence article. Understanding what documentation exists – and what it shows – is often what determines which path applies to your situation.

If the proposed amount is large, the underlying income is disputed, or your tax situation involves multiple adjustments, read the professional help article before you respond. A single CP2000 response, handled correctly, is often the most cost-effective point to bring in expert guidance.