When is Form 2290 considered late?
Form 2290 is late after the last day of the month following the month of first use. For most annual filers (trucks with July first-use), that means September 1 onward. The IRS assesses a 4.5% late-filing penalty per month, up to 25% of the unpaid tax. Late payment also accrues interest at the federal short-term rate plus 3 percentage points.
The IRS late-filing penalty under 26 USC §6651(a)(1) is 4.5% of the unpaid tax for each month or part of a month the return is late, up to a 25% maximum. So a return filed two months late owes 9% of the unpaid tax in penalty, three months late owes 13.5%, and so on through the cap.
The late-payment penalty under §6651(a)(2) is 0.5% per month of unpaid tax up to a 25% cap, on top of any late-filing penalty. Both penalties accrue from the original due date, not from when the IRS notices the deficiency. Interest also accrues at the federal short-term rate plus 3 percentage points.
A first-time abatement (FTA) is sometimes available for filers with three years of clean compliance prior to the late filing. The carrier requests FTA in writing or through their tax practitioner; the IRS grants the relief on a case-by-case basis. FTA does not apply to interest, only the penalty layer.
Practical implication: if the deadline has already passed, file as soon as possible — every additional month adds 5% to the total penalty. The stamped Schedule 1 issues normally even on a late filing; the penalty is assessed separately by the IRS afterward.