Code 321: abatement of fraud penalty.
From IRS Document 6209, the IRS's processing codes manual.
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Document 6209 says
Credit. Used on individual (IMF) accounts.
Abatement of Fraud Penalty
The full Document 6209 entry, as printed
Credit (NPJ) I/B Abatement of Fraud Penalty 47, 54 Abates a previously posted 320 transaction in whole or in part. BMF/IMF: Releases restriction on FTP Penalty.
After code 321
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Questions people ask
What does code 321 mean on my IRS transcript?
Document 6209 calls it "Abatement of Fraud Penalty".
Sources
Checked against these sources on October 30, 2026.