IRS NOTICE REFERENCE
Understanding your CP2000 series notice
Factual reference for CP2000. General information only — not legal or tax advice.
General information only. Not legal or tax advice.
Notice details
- Notice code
- CP2000
- Category
- Underreporter / income matching
- Severity tier
- Tier 3 — Time-sensitive response. The notice carries a response deadline or may affect account standing if ignored.
- Governing law
- §6201; §6212 (Internal Revenue Code sections)
- Statutory response window
- 30-day window — always confirm the exact deadline against the date printed on your notice.
- Source
- IRS.gov — Understanding Your IRS Notice
What the IRS says to do
Review the entire notice and follow the instructions to resolve this issue. Reply to the notice by the date listed. If a response form is included in your notice , complete and sign it. State whether you agree or disagree with the notice and include any supporting documentation. If your notice doesn’t have a response form , follow the notice’s instructions. If you agree with the notice and don’t have other income, credits, or expenses to report , follow the notice’s instructions. You don’t need to amend your return.
This is the IRS’s own guidance reproduced from the IRS notice page. It describes the IRS’s process — it is not legal or tax advice from TaxRiskOS.
Governing IRS procedure (Internal Revenue Manual)
The IRS’s own internal procedures for handling this notice type are documented in the Internal Revenue Manual:
- IRM 4.19.3 — 4.19.3 IMF Automated Underreporter Program
- IRM 4.19.2 — 4.19.2 IMF Automated Underreporter (AUR) Control
Reference to published IRS procedure. General information — not legal or tax advice.
Official IRS reference
Read the official notice page on IRS.gov: https://www.irs.gov/individuals/understanding-your-cp2000-series-notice
Related tools
TaxRiskOS is workflow software for practitioners — it captures the notice, computes the deadline, surfaces the escalation tier, and builds a document checklist. It documents process; it does not give advice or draft responses.
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