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IRS CP2000:here's whatit means.
Proposed changes to your return. Income reported to the IRS doesn't match your return, so the IRS is proposing additional tax. It's not a bill yet.
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What is IRS CP2000?
Proposed changes to your return. Income reported to the IRS doesn't match your return, so the IRS is proposing additional tax. It's not a bill yet. Respond by the date on the notice, usually about 30 days.
Updated November 2026. Serving all of California online.
Deadline
Respond by the date on the notice, usually about 30 days.
If you ignore it
The proposed amount can be assessed as tax you owe, with penalties and interest.
What to do now.
- 1Compare each item the IRS lists with your records. Many CP2000s are partly or fully wrong.
- 2Agree, partly agree, or disagree on the response form, with documents for anything you dispute.
- 3Respond by the date on the notice, even if you need more time to pay.
General information, not legal advice. The exact deadline is printed on your notice.
Common questions.
Is IRS CP2000 real or a scam?
Real IRS notices arrive by U.S. mail, not by text, social media, or a surprise phone call demanding payment. To verify, compare it with your IRS online account or call the number listed on IRS.gov, not a number from a suspicious message. We can check it for you.
Can MM.TAX respond to IRS CP2000 for me?
Yes. Our practice is led by an IRS Enrolled Agent. We file a power of attorney (Form 2848), pull your transcripts, and respond to the IRS for you, online anywhere in California.
What if I can't pay what the IRS says I owe?
You have options: an installment agreement, an Offer in Compromise if you qualify, penalty abatement, or currently-not-collectible status during hardship. The right choice depends on your income, assets, and the amount owed.
IRS notices
Look up another letter.
- CP14Balance due
- CP501Reminder: unpaid balance
- CP504Notice of intent to levy
- LT11Final notice of intent to levy
- CP3219ANotice of deficiency
- Letter 3172Federal tax lien filed
- Letter 566Audit or examination
- CP2501Income doesn't match your return
- CP59No record of your tax return
- CP11Changes to your return, balance due
- CP161Business balance due
- LT16Contact us about overdue taxes
- Letter 1153Trust fund recovery penalty proposed
- Form 668-ABank or wage levy
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Let us handle your CP2000.
Free 30-minute review with a senior advisor. Call the online team or answer a few questions.