IRS Notices Decoded: What Each One Means and What to Do Next
By Paul D. Diaz, EA, MBA ·
An IRS envelope in the mailbox rattles almost everyone. The notice inside is rarely as bad as the adrenaline suggests — but it is never something to ignore. After years of reading these letters for clients, I can tell you the difference between a routine correction and a five-alarm collection notice comes down to knowing which letter you are holding.
The notices I see most often
- CP2000 — the IRS matched your return against W-2s and 1099s from employers, banks, and brokers, and found a mismatch. It proposes a change; it is not a bill yet.
- Notice of Deficiency (the "90-day letter") — the IRS has formally determined you owe more tax. You have a limited window to petition the Tax Court before it becomes final.
- CP504 — an unpaid balance with a warning that the IRS may seize state refunds and move toward levy.
- Letter 1058 / LT11, Final Notice of Intent to Levy — the last stop before the IRS takes collection action against wages, bank accounts, or property. This one carries appeal rights with a hard deadline.
- Refund notices — delays, offsets, or adjustments to a refund you claimed.
What to do when one arrives
- Read it carefully. Identify the tax year, the issue, and the notice number.
- Pull your records for that year — return copy, W-2s, 1099s, anything relevant.
- Check the deadline. Most notices give you a limited window to respond or appeal, and those windows protect real rights.
- Respond in writing, on time. Silence is the one response that always makes it worse.
- Get professional eyes on it. An enrolled agent — a federally licensed tax practitioner — can represent you before the IRS in exams, collections, and appeals.
Myths worth killing
"If I ignore it, it goes away." It never does. Ignored notices escalate on a schedule, and the penalties and interest keep running while you look away.
"A notice means I did something wrong." Many are informational or fix simple mismatches. Some even end in your favor.
"Only a professional can talk to the IRS." You can call the IRS yourself. But what you say gets recorded in your file, and an advocate who does this daily avoids the unforced errors.
At THE TAX CUTTERY®, resolution work is done in writing, with a documented strategy — no hold music, no guessing. If there is a notice sitting on your counter right now, attach it with the paperclip in the chat and we scope and quote the work in writing after intake. Want the deeper background first? The free Chapter 8 sample of the Guide is yours.
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