CP2000: the IRS found income that doesn't match your return

The IRS compared your return with W-2s, 1099s and other forms filed by third parties, and the numbers differ. The proposed change may raise your tax, lower it, or leave it the same.

A CP2000 is not a final decision. Third-party forms are sometimes wrong, duplicated, or missing the cost basis that cuts the taxable amount. That is why checking every line before you pay matters.

IRS.gov says: "Reply to the notice by the date listed." The deadline is printed on your notice. If you need more time, the CP2000 page lets you send an extension request with a reply option. Ask before the date, not after.

The IRS may send another notice and a bill. Per irs.gov, interest accrues until the balance is paid, and penalties may apply. Silence also means the IRS's numbers stand without your side of the story.

Unresolved proposed changes of this type can lead to a statutory notice of deficiency (CP3219A), the legal letter that starts the Tax Court clock.

1. Read the whole notice and find the reply date.
2. Pull the W-2s, 1099s and brokerage statements for that year and match each item the IRS lists.
3. Decide whether you agree or disagree, and note any expense or basis the IRS didn't count.
4. Complete and sign the response form. Both spouses sign if you filed jointly.
5. Send it by upload (the IRS calls this the fastest way), fax, or mail to the address on the notice.

Check every income form for the year the notice covers, not just the ones it names. The usual suspects are W-2s, 1099-NEC and 1099-K forms for side or gig work, 1099-INT and 1099-DIV for bank and brokerage income, 1099-B for stock sales, and 1099-R for retirement withdrawals.

Look for three common problems. A form may be counted twice. Income may already be on your return under a different line, such as a business schedule. Or a stock sale may show the full sale price with no purchase cost, which makes the gain look far larger than it was. Each of these is a reason to disagree, in writing, with proof.

Blaga compares the notice line by line with your records and the income documents. She prepares a signed response that agrees or disagrees, with supporting documents, and asks for more time if you need it. Under a Form 2848 power of attorney, she represents you in the reply.

If you agree and owe, she can set up a payment plan or review penalty relief. Blaga meets clients at her FM 1960 W office in Houston and works with people elsewhere by secure portal.

Once the IRS reviews your reply, it either accepts it, adjusts the proposal, or sends a bill. Do you have other income or deductions beyond what the notice lists? IRS.gov says to file Form 1040-X and write "CP2000" on top. For deeper reviews, see our IRS audit help page.