Independent educational site: We are not affiliated with or endorsed by the IRS. This page helps you quickly find the matching explanation for your IRS notice or letter. It is for general education only — not tax advice.
IRS Letters and Notices Explained — See All Letters
Look for a code near the top-right of your IRS notice (examples: CP14, CP2000, CP504, LT11). Then click the matching page below. Each page explains what the letter usually means and what typically happens next.
Quick takeaway: Start with the letter code — it’s the fastest way to get clarity.
Search by notice number
Type a notice code like CP14 or LT11. This searches the whole site.
Tip: If your notice says “Final Notice”, “Intent to Levy”, or “Lien”, you may also want to read the enforcement pages below.
Not sure where to start?
If you don’t recognize the code on your letter, start with our “what does this letter mean” guide.
Balance Due & Collection Notices (Common Path)
These notices often show up when the IRS says you have an unpaid balance. The tone usually escalates over time. Takeaway: Even if you disagree, don’t ignore it—learn what it means first.
Proposed Changes & Review Notices
These notices often show up when the IRS is reviewing a return, proposing changes, or holding something while they verify information. Takeaway: These are usually about documentation and timing, not “you’re in trouble.”
Adjustments, Credits, Refund Changes & Math Notices
These notices often show up when the IRS changes something on a return, adjusts a credit, or updates a balance because of penalties/interest. Takeaway: These can look scary, but many are “here’s what we changed” type notices.
Enforcement & Collection Actions (Big Words Explained)
If your notice mentions “levy,” “lien,” “final notice,” or “hearing,” these pages explain the terms in plain English. Takeaway: These words are serious, but learning the process reduces panic.
Common Panic Questions (“Can the IRS take…?”)
These pages answer common fear-based questions in plain English (without pretending to give legal advice). Takeaway: Understanding the process helps you make calmer next steps.
Other Letters
Quick takeaway: If your letter code isn’t listed yet, search the site or start with the “what does this letter mean” page.
FAQ
What if my IRS letter isn’t on this list?
That’s normal. The IRS has a lot of letter types, and we’re building the library over time. Your best move is to use the search box above and type the exact code on your notice. If you still can’t find it, start with what does this IRS letter mean? to figure out what category it belongs to.
Are these pages official IRS guidance?
No. This is an independent educational site. We explain common IRS letters in plain English. Always rely on the official instructions printed on your actual notice for deadlines, amounts, and where to respond.
Does getting a CP notice mean I’m being audited?
Not always. Many CP notices are automated and are not full audits. If you’re worried about this, read: Does an IRS letter mean an audit?
What if my letter talks about levy or lien?
Start with the plain-English definitions first: What is an IRS levy? and What is an IRS lien?. Then check the “Final Notice” and “Lien” pages on this index.
Non-affiliation: WhatThisIRSLetterMeans.com is an independent educational resource and is not affiliated with, authorized by, endorsed by, or sponsored by the Internal Revenue Service (IRS) or any government agency. Content is for general informational purposes only and should not be relied upon as tax or legal advice.