Understanding IRS Notices: Every Letter Decoded from CP14 to CP2000
IRS notices are confusing by design. This guide decodes every common IRS letter: what it means, how urgent it is, your response deadline, and exactly what to do when you receive each one.
Emily RodriguezMarch 23, 202612 min read
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<p>Receiving a letter from the IRS triggers anxiety for most people. Understanding what each notice means, how urgent it is, and what action to take can reduce that anxiety and prevent a manageable situation from escalating. The IRS sends notices identified by a code (CP14, CP2000, LT11, etc.) and each has a specific meaning and required response. Here is your complete decoder.</p>
<h2>Balance Due Notices (CP14, CP501, CP503, CP504)</h2>
<p>CP14 is the first notice you receive when you owe money. It's informational, showing the balance with penalties and interest. No immediate collection action will occur. Respond within 30 days if you disagree. CP501 is the first reminder, sent about 5 weeks after CP14. Still informational but slightly more urgent in tone. CP503 is the second reminder with stronger language about potential collection. CP504 is the critical one: it's the Notice of Intent to Seize Your State Tax Refund and warns that further levy action may follow. Pay, set up a payment plan, or contact the IRS within 30 days.</p>
<h2>Income Discrepancy (CP2000)</h2>
<p>A CP2000 is not a bill; it's a proposed adjustment. The IRS received information (W-2, 1099, K-1) that doesn't match what you reported. Common triggers: unreported 1099-NEC income, stock sales reported to the IRS but not on your return, or retirement distributions not included. You have 30 days to agree or disagree. If you agree, sign and return the response form. If you disagree, send documentation proving your reported amount was correct. Many CP2000s are wrong or partially wrong, so always verify before agreeing.</p>
<h2>Refund Adjustment (CP12, CP21, CP22)</h2>
<p>CP12 means the IRS corrected a math error on your return and changed your refund. CP21 means changes to your return resulted in a refund you're now owed. CP22 means changes resulted in an amount you now owe. These are usually math corrections or credit adjustments. Review the notice carefully. If you agree, no action needed (CP12 and CP21) or pay the balance (CP22). If you disagree, respond within 60 days with supporting documentation.</p>
<h2>Levy and Lien Notices (LT11, Letter 1058, CP90, CP297)</h2>
<p>These are the most urgent notices. LT11 and Letter 1058 are Final Notices of Intent to Levy. You have 30 days to request a Collection Due Process hearing using Form 12153. This is your last chance to stop collection action through formal channels. CP90 is the Notice of Intent to Levy for individual taxpayers (same urgency as LT11). CP297 is the equivalent for businesses. Do not ignore these. Missing the 30-day deadline for a CDP hearing significantly limits your options.</p>
<h2>Audit Notices (Letter 2202, CP75, CP12)</h2>
<p>Letter 2202 is a correspondence audit: the IRS wants documentation for specific items on your return. Respond by the deadline with the requested documents. CP75 requests verification of the Earned Income Tax Credit (EITC): send proof of qualifying children, income, and residency. Audit notices always specify exactly what documentation is needed and the response deadline. Send copies, never originals. Use certified mail with return receipt for proof of timely response.</p>
<h2>What to Do with Any IRS Notice</h2>
<p>Regardless of the notice type, follow this process: 1) Open it immediately (delays cost money and options). 2) Note the response deadline and mark your calendar. 3) Read the entire notice, including the back pages. 4) Verify the amounts against your records. 5) If you agree and owe money, pay or set up a payment plan before the deadline. 6) If you disagree, respond in writing before the deadline with specific reasons and documentation. 7) Keep copies of everything you send. 8) If you don't understand the notice, call the number on the notice (top right corner) or consult a tax professional. Never ignore an IRS notice. The problem only gets worse, never better, with time.</p>
About Emily Rodriguez
Small business tax specialist helping entrepreneurs navigate complex tax situations.