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IRS notices

IRS notices and letters explained

Find the code printed on your IRS notice or letter (such as CP2000, CP14 or LT11) below to see what it means in plain English, how long you usually have to respond, what to do and what to avoid. The pages are grouped by how urgent each notice usually is. The date printed on your own notice always controls.

40 notices · Information checked September 23, 2026

Decode my notice

Severity 5 of 5: Urgent: rights or deadlines at stake

Severity 4 of 5: High: act promptly

Severity 3 of 5: Moderate: respond by the deadline

Severity 2 of 5: Low: check it and respond if asked

Severity 1 of 5: Informational

How is severity rated?

Severity is RAHA Financials' own 1 to 5 rating, not an IRS classification. 1 means informational, 2 a low-stakes review or minor action, 3 a response or payment due within a window with no enforcement yet, 4 escalating collection or examination with a deadline, and 5 imminent enforcement or a deadline that can cost you rights. Each notice page explains the reason for its rating.

Disclaimer: This page provides general information for educational purposes and is not tax, legal or accounting advice. Your situation may depend on facts not covered here. Always follow the dates and instructions printed on your own notice, and consult a qualified professional before acting. RAHA Financials is not affiliated with the IRS.