IRS Notice CP24: Estimated payments didn't match — refund
Quick answerThe IRS found a difference between the estimated payments on your return and those on file, and the correction results in an overpayment (refund).
Letter / noticeCP24
MeaningEstimated payments didn't match — refund
Action needed?Yes — see steps
What happens next
Any refund is issued after the correction unless it's offset to a debt.
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What you should do
- Check the payments the IRS lists
- Contact the IRS if any payment is missing
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 CP24 mean?
The IRS found a difference between the estimated payments on your return and those on file, and the correction results in an overpayment (refund).
What should I do?
Check the payments the IRS lists Contact the IRS if any payment is missing
How long does it take?
Any refund is issued after the correction unless it's offset to a 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.