Underreported income mismatch
Got an IRS CP2000Notice? Here's What It Means
Deadline & urgency
The CP2000 gives you a response deadline—often around 30 days from the notice date. Missing it can lead to a bill based on the proposed changes without further review.
What this notice means
A CP2000 is the IRS’s way of saying their records don’t match what you reported on your tax return—usually income (W-2, 1099, etc.), withholding, credits, or deductions.
The notice proposes changes to your return and often shows tax due, interest, and sometimes penalties if you don’t respond or agree.
Why did I get this?
A payer (employer, bank, client) reported income or other items to the IRS that weren’t on your return, or were reported differently.
There may be a typo, missing form, timing difference, or a real mismatch the IRS wants you to explain or correct.
What should I do next?
Read the CP2000 carefully and compare it to your return and your own W-2s/1099s.
If you agree, follow the notice’s instructions to sign and return the response form and pay any amount due (or set up a payment arrangement if needed).
If you disagree, reply with a clear explanation and supporting documents by the deadline shown on the notice.
Consider talking to a tax professional if the changes are large, involve multiple years, or you’re not sure what the IRS matched.
Frequently asked questions
Is a CP2000 the same as an audit?
Not exactly. It’s an automated underreporter matching notice with a proposed adjustment. It can still have serious tax consequences, and how you respond matters.
What if the IRS is wrong?
You can dispute it by responding with documentation (corrected forms, proof of basis, identity of payee, etc.) as instructed on the notice.
Will I owe penalties?
It depends on the facts and whether the IRS proposes penalties. Your notice should break down tax, interest, and any penalties; a professional can help you understand options.