There's the version of tax resolution the late-night commercials sell you. Then there's how it actually works. I'm Darrin Mish, a Tampa tax attorney. I've spent 32 years on the inside of these cases. Here's the real version.
You open the mail and there it is: a letter from the IRS with CP2000 printed at the top. It says you owe more money, sometimes a lot more, and your stomach drops.
Take a breath. A CP2000 is not an audit, it’s not a bill, and it’s not the IRS accusing you of cheating.
Here’s what it actually is, and here’s what to do about it.
A CP2000 Comes From a Computer, Not an Agent
Nobody at the IRS sat down with your return and decided you were hiding something. A computer did this.
The IRS matches what you put on your return against what other people reported about you. Your W-2s, your 1099s and your brokerage statements all get filed with the IRS.
When those numbers don’t line up with your return, the computer flags it. Then it spits out a proposed change.
That’s the key word: proposed. The IRS is telling you what it thinks the numbers should be.
It’s not the final word. You get to answer it.
That changes how you should read the letter. You’re not reading a verdict; you’re reading the IRS’s first draft, and first drafts get corrected all the time.
The IRS Is Often Wrong, or at Least Incomplete
A computer matching program only knows what it was fed. It doesn’t know the rest of the story.
So CP2000 notices are frequently wrong, or at least incomplete. The proposed balance often looks far worse than what you really owe.
The classic example is stock sales. Say your brokerage reports that you sold $10,000 of stock.
The IRS computer sees $10,000 of income. What it doesn’t see is that you paid $9,000 for that stock in the first place.
Your real gain was $1,000. But the CP2000 wants to tax you on the whole $10,000.
Now multiply that across a few transactions. The proposed balance looks terrifying, and it’s also usually inflated.
That’s why I tell people not to just write the check. If you pay a CP2000 without reading it closely, you may be paying tax on money you never actually made.
Don’t Ignore It, Answer It
The first rule is simple: don’t ignore it. That’s the one move that turns a manageable problem into a real one.
A CP2000 gives you a deadline to respond, usually 30 days. Put that date on your calendar the day the letter shows up.
Thirty days goes by faster than you’d think, especially if you need to track down old brokerage statements. Start gathering paperwork right away, even if you aren’t sure yet whether you agree.
There’s a response form right in the notice. It gives you three choices.
1. You agree. If the IRS is right, you sign, you arrange to pay, and you move on. 2. You partially agree. Some of the changes are right and some aren’t, and you say which is which. 3. You disagree. The IRS got it wrong, and you’re going to show why.
If you disagree, in whole or in part, you respond in writing. And you attach the proof.
What Proof Looks Like
The proof is whatever fills in the piece the computer was missing. A few common examples:
- The cost basis of the stock you sold. That’s the $9,000 in the example above, and it’s often the whole ballgame.
- A 1099 that got reported twice. Duplicates happen, and the computer counts them both.
- Income that was already on your return, just on a different line. The IRS matched it to one spot, didn’t find it there, and assumed it was missing.
You make the IRS show its work, and you show yours.
You don’t need to write an essay. A short, clear explanation tied to the documents does more good than three pages of frustration.
Keep the response focused on the items in the notice and make the documents easy to follow.
What Happens If You Do Nothing
If you don’t respond, the proposed change becomes a real assessment. This is where it stops being a letter and starts being a process.
The CP2000 turns into a notice of deficiency. That’s the dreaded 90-day letter.
After that, the IRS can assess the tax and start collecting. Liens, levies, the whole machine.
And all of it traces back to a piece of mail that sat on the kitchen counter. A notice you could have answered with a few documents ends up as a collection case.
That’s what makes ignoring a CP2000 so expensive. The problem was fixable the whole time; it just needed a response.
Most CP2000 Notices Aren’t the Disaster They Feel Like
After 32 years of doing this, I can tell you that most CP2000 notices aren’t the disaster they feel like on day one. A lot of them get reduced.
Some get wiped out completely. But only if you respond, and respond correctly, before the clock runs out.
Knowledge is protection. You now know what this notice is, what it isn’t, and what it’s asking of you.
If the IRS is right, fine: agree, pay or set up a plan, and move on. If it isn’t, don’t pay a dime more than you actually owe.
Let’s Talk Before the Deadline
If you have a CP2000 sitting in front of you and the numbers don’t make sense, don’t guess and don’t panic. Get a straight answer while you still have time to use it.
Call my office at (813) 229-7100 or visit getirshelp.com for a confidential consultation. I’ll tell you straight whether you owe it, and if you don’t, how to prove it.
This article is general information, not legal advice for your situation.