
The Per-Partner, Per-Month Late-Filing Penalty: What a Late 1065 or 1120-S Really Costs You
A late Form 1065 or 1120-S costs $255 per owner per month for up to 12 months under IRC 6698/6699 — even when the entity owes zero tax. Here is how the math works, why first-time abatement does not apply, and how Revenue Procedure 84-35 can zero out the bill for partnerships with 10 or fewer partners.










