Code 780: master file account compromised.
From IRS Document 6209, the IRS's processing codes manual.
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Document 6209 says
Used on individual (IMF) accounts.
Master File Account Compromised
The full Document 6209 entry, as printed
I/B Master File Account Compromised 77 To post, a return (TC 150) and an unreversed TC 480 must be posted. Issuance of OIC transcripts is continued. (1) Unreversed TC 780 generates OIC Transcript whenever module net balance changes. BMF: Releases TC 480 freeze, but does not stop issuance of transcripts. Freezes module from offset in. Prevents computer calculation of interest and FTP. IMF: Prevents computer generation of credit or debit interest. Credits are frozen from refunding in all tax modules of the account for 8 weeks; also, credits in the affected tax module are frozen from offsetting in or out. 78 Hold released by TC 781, 782 or 788.
After code 780
Not enough shared timelines with this code yet. The block fills in once 30 people with code 780 share theirs from the result page.
Crowd figures, not IRS data. They describe what happened to others, not a promise.
Questions people ask
What does code 780 mean on my IRS transcript?
Document 6209 calls it "Master File Account Compromised".
Sources
Checked against these sources on October 30, 2026.