IRS Notice CP21B: Changes you requested — refund coming
Quick answerThe IRS made the changes you requested to your return, and you're due a refund.
Letter / noticeCP21B
MeaningChanges you requested — refund coming
Action needed?Usually no
What happens next
The refund usually arrives within 2–3 weeks of the notice, unless it's used to pay another debt.
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What you should do
- No action needed if the changes are right
- Check your bank or mail for the refund
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 CP21B mean?
The IRS made the changes you requested to your return, and you're due a refund.
What should I do?
No action needed if the changes are right Check your bank or mail for the refund
How long does it take?
The refund usually arrives within 2–3 weeks of the notice, unless it's used to pay another debt.
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.