IRS Notice CP2000: Proposed Changes to Your Return

CP2000 means information the IRS received from employers, banks, brokers, or casinos does not match your return. It proposes a change to your tax, but it is not a bill and not a formal audit.

Deadline

Respond by the date on the notice, usually 30 days from the notice date (60 days if you live outside the U.S.).

What a CP2000 means

Common causes are a missed 1099, W-2G gambling winnings, or brokerage sales reported without cost basis. Sometimes the IRS is wrong, for example when basis was not reported.

How to respond

Check every line item against your records.
Sign the response form agreeing, partly agreeing, or disagreeing.
If you disagree, explain why and include documents.
If you agree but cannot pay, request a payment plan with your response.

Common questions

What if I miss the CP2000 deadline?: The IRS typically issues a statutory notice of deficiency (CP3219A), which starts a 90 day window to petition the U.S. Tax Court.

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