Code 680: designated payment of interest.
From IRS Document 6209, the IRS's processing codes manual.
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Document 6209 says
Credit. Used on individual (IMF) accounts.
Designated Payment of Interest
The full Document 6209 entry, as printed
Credit (PJ) I/B Designated Payment of Interest 17, 18, 19, 24 Input to pay assessed and/or unassessed interest due without tolerance application. If unrestricted, updates interest paid field by the TC 680 amount. If the interest paid field exceeds the interest assessed field, generates TC 196 to the extent of paid unassessed interest due. Any portion that exceeds TOTAL interest due is applied to tax and penalty. The TC 680 amount which pays assessed interest is excluded when recomputing interest.
After code 680
Not enough shared timelines with this code yet. The block fills in once 30 people with code 680 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 680 mean on my IRS transcript?
Document 6209 calls it "Designated Payment of Interest".
Sources
Checked against these sources on October 30, 2026.