IRS Notice CP210: IRS changed your business return
Quick answerThe IRS made a change to a business tax return for the period shown, resulting in a balance due or a refund.
Letter / noticeCP210
MeaningIRS changed your business return
Action needed?Yes — see steps
What happens next
Contact the IRS by the date on the notice if you disagree.
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What you should do
- Read the explanation of the change
- Call the number on the notice with your return handy
Official explanation: IRS page for CP210
Scam check: the IRS first contacts you by mail. Use only the phone numbers printed on your letter or on IRS.gov — never ones from a text, email or unofficial site.
Frequently asked questions
What does IRS Notice CP210 mean?
The IRS made a change to a business tax return for the period shown, resulting in a balance due or a refund.
What should I do?
Read the explanation of the change Call the number on the notice with your return handy
How long does it take?
Contact the IRS by the date on the notice if you disagree.
Sources
- IRS: Understanding your IRS notice or letter
- IRS: Get Transcript
- Taxpayer Advocate Service (independent help inside the IRS)
Written by the editorial team and checked against the official sources above. See our editorial policy.
By the TranscriptCodes Editorial Team · Last reviewed 2026-11-12.