Code 301: abatement of tax by examination or appeals.
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 Tax by Examination or Appeals
The full Document 6209 entry, as printed
Credit (NPJ) I/B Abatement of Tax by Examination or Appeals 47 Abates a previously posted TC 150, 290 and/or 300 in whole or in part. Generates abatements of computer generated interest where applicable. (TC 197 or 337) Releases same freezes and holds as TC 300. Blocking series 790-799 or 900-999 will generate a CP 55.
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Questions people ask
What does code 301 mean on my IRS transcript?
Document 6209 calls it "Abatement of Tax by Examination or Appeals".
Sources
Checked against these sources on October 30, 2026.