Select Official IRS Notice or Form Code

Official IRS Statutory Analysis

Notice CP2000: Proposed Changes to Return (Automated Underreporter - AUR)

High Severity Action
Mandatory Response Deadline

30 calendar days (60 days if outside the U.S.)

Statutory Authority & IRM

IRC § 6213(b) · IRM 4.19.3 (Automated Underreporter Processing)

Notice Explanation & Mechanics

The IRS computer system flagged income, payments, or credits reported by third parties (W-2, 1099, 1099-B, K-1) that do not match the amounts reported on your Form 1040.

Statutory Step-by-Step Action Protocol

1Do not panic: CP2000 is a proposed assessment, not a formal bill or audit notice.
2Cross-examine IRS Form 886-A (Explanation of Items) against your original tax documents.
3Check for missing cost basis on 1099-B stock sales (common error where IRS taxes gross proceeds rather than net gains).
4Sign and return the response form with supporting schedules (Form 8949, corrected 1099) before the 30-day deadline to prevent statutory Notice of Deficiency issuance.
Statutory Relief Generator · IRM 20.1.1.3.6.1

IRS First-Time Penalty Abatement (FTA) Request Letter Generator

Under IRS administrative rules (IRM 20.1.1.3.6.1), taxpayers with a 3-year clean compliance history are legally eligible to have failure-to-file and failure-to-pay penalties completely removed without proving reasonable cause. Customize and print your formal petition below:

[Date: 11/2/2026] Internal Revenue Service [Insert IRS Service Center Address Shown on Notice] RE: Request for First-Time Penalty Abatement pursuant to IRM 20.1.1.3.6.1 Taxpayer Name: John Doe Taxpayer Identification Number: XXX-XX-1234 Tax Year / Period: 2025 IRS Notice Reference: CP2000 (Dated: 2026-10-15) Dear IRS Examination / Collection Officer: I am writing to respectfully request an administrative abatement of the failure-to-file penalty (IRC § 6651(a)(1)) and/or failure-to-pay penalty (IRC § 6651(a)(2)) assessed on the above-referenced tax period, in accordance with the IRS First-Time Abatement (FTA) administrative waiver policy codified in Internal Revenue Manual (IRM) 20.1.1.3.6.1. STATUTORY ELIGIBILITY CRITERIA: 1. Filing Compliance: I have filed all currently required federal income tax returns (or filed a valid extension). 2. Payment Compliance: I have paid, or have arranged to pay through an approved installment agreement, any outstanding tax liability. 3. Clean Prior Record: For the three tax years preceding tax year 2025, I have had no prior statutory penalties assessed, or any prior penalty was previously removed under reasonable cause criteria. Because I meet all three criteria mandated by the Treasury Department and Internal Revenue Manual IRM 20.1.1.3.6.1, I respectfully request that all discretionary failure-to-file and failure-to-pay penalties, along with associated compound interest accrued on those penalties, be completely removed and abated from my account. Thank you for your assistance in resolving this matter. Please send written confirmation of penalty abatement to my address on record. Sincerely, ____________________________________ John Doe Phone: [Your Phone Number] Address: [Your Current Address]

Not tax, legal, or financial advice

FiscTalk provides general educational information from public sources. Your tax results depend on the full set of facts, your filing history, and the jurisdiction-specific rules that shift yearly. Before filing or making decisions, consult a licensed CPA, EA, or attorney. FiscTalk is not a fiduciary and is not affiliated with the IRS or any state agency.

IRS Notice & Statutory Examination FAQ

What should I do immediately after receiving an IRS notice?

First, verify the notice code in the top or bottom right corner (e.g., CP2000, CP14, CP504). Note the response deadline immediately, as IRS statutory deadlines (typically 30 calendar days) are strictly enforced. Never ignore an IRS letter — proposed adjustments become final binding assessments if left unanswered.

What is IRS First-Time Penalty Abatement (FTA)?

First-Time Abatement (FTA) is an administrative waiver authorized under Internal Revenue Manual (IRM) 20.1.1.3.6.1. It allows qualifying taxpayers with a 3-year clean compliance history to completely remove failure-to-file and failure-to-pay penalties without needing to establish reasonable cause.

Is a CP2000 notice an official tax audit or bill?

No. A CP2000 is an automated underreporter (AUR) proposed adjustment letter, not an official audit or statutory bill. It informs you that information reported by third parties (such as 1099s or W-2s) does not match what was filed on your return. You have the statutory right to disagree and provide supporting documentation.

What happens if I miss the 30-day CP2000 or LT11 response window?

Missing the response window triggers a Statutory Notice of Deficiency (90-day letter). Once that occurs, your only formal avenue to challenge the proposed tax without paying it first is filing a formal petition with the United States Tax Court within exactly 90 days.

Related tools from our network

A focused set of free calculators and guides across related topics — no account required.