How to Respond to an IRS CP2000 Notice (Without Making It Worse)
CP2000 means the IRS thinks something on your return doesn't match what payers reported. It is a proposal, not a bill — and the response window is short.
A CP2000 notice from the IRS is the most common automated underreporter inquiry. It compares third-party data (W-2s, 1099s, brokerage 1099-B, K-1s) to what you reported and proposes adjustments. You have 30 days to respond — and how you respond determines whether this stays small or becomes an audit.
Key terms
- What CP2000 is not
- An audit, a final assessment, or a bill — yet.
- Response window
- 30 days from the notice date, often extended to 60 with a written request.
Step-by-step
- 1
Pull your transcripts
Order Wage & Income transcripts for the tax year to see exactly what payers reported.
- 2
Reconcile line by line
Compare each item the IRS proposes to your originally reported figures.
- 3
Choose your response posture
Full agree, partial agree, or full disagree — each has its own response form.
- 4
Send a documented response
Include the response page, signed agreement (or disagreement with explanation + records), and any amended schedules.
Checklist
- Pull Wage & Income transcripts for the year
- Reconcile each IRS-proposed item against your return
- Compute the corrected tax with penalties and interest
- Draft a written response stating agree / partial agree / disagree
- Attach supporting documentation
- Send via certified mail; keep proof of delivery
Frequently Asked Questions
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