Have you received a letter from the IRS with a confusing code like CP2000, CP12, LT11, or CP14? You’re not alone. Every year, millions of Americans receive IRS notices without understanding what they mean or what steps to take next. That’s where this free IRS Notice Decoder Tool comes in.
What Is an IRS Notice Code?
An IRS notice code (like CP2000 or LT11) is a short identifier printed on the top of official IRS letters. These codes help explain why you received the letter — whether it’s a refund adjustment, identity verification, missing return, IRS audit, or unpaid taxes.
How to Use the IRS Notice Decoder
Simply enter the code printed on your IRS letter (e.g., CP12, CP14, LT11) into the search box below. Our tool will instantly tell you:
- What the notice means
- What action to take
- Whether there are deadlines you must meet
Common IRS Codes We Cover
We’ve included plain-English explanations for over 100 IRS notices and letters, including:
- CP2000 – Unreported income
- CP12 – Refund adjustment
- CP14 – First notice of tax due
- LT11 – Final notice before levy
- CP90 – Intent to seize property
- CP501, CP503, CP504 – Collection notices
Stay Informed, Stay Protected
Ignoring an IRS notice can lead to penalties, interest, or legal action. By understanding your letter, you can take the right action—on time. Bookmark this tool or share it with friends who’ve also received IRS correspondence.