Reference code 1121.
Problem identified
Return under review
See how long people with this situation waited, from their transcripts.
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What it means.
The IRS manual's wording:
Problem identified; P- Freeze
What to do.
The IRS stopped the refund to fix a problem on the account. Wait for the letter; it says what is needed.
Codes in the same group.
- Reference code 1181Refund delayed
- Reference code 1221Refund delayed
- Reference code 1241Paper return received more than 6 weeks ago
- Reference code 1242Electronic return received more than 3 weeks ago
- Reference code 1261Paper return received more than 6 weeks ago
- Reference code 1262Electronic return received more than 3 weeks ago
Questions people ask
What does reference code 1121 mean?
The return is under review and the refund waits. The IRS manual's own wording is quoted on this page.
What should I do about code 1121?
The IRS stopped the refund to fix a problem on the account. Wait for the letter; it says what is needed.
Sources
Checked against these sources on October 30, 2026.