The last day of the 7th month after the plan year ends, or about 2 1/2 months later with Form 5558. Enter the plan year end and this works out both, moved for weekends and federal holidays.
Add a filing date and it shows the days late and the penalty under the Department of Labor’s Delinquent Filer Voluntary Compliance Program. Nothing you enter leaves your browser.
The last day of the plan year being reported, or of a short plan year.
Was Form 5558 filed on time?On or before the original due date. A late Form 5558 extends nothing.
Optional. If it falls after the deadline, the result shows the days late and the penalty under the Department of Labor’s Delinquent Filer Voluntary Compliance Program.
Plan size, for the penalty capWeekend and federal holiday dates move to the next business day under the Form 5500 instructions. Read more: Form 5500 deadlines and Form 5558 extensions.
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$10 for each day late, capped. The figures below were checked against the Department of Labor’s program page on November 3, 2026.
The penalty is paid by the plan administrator personally, not from plan assets. Participation does not remove IRS or PBGC penalties. For the full picture, see Form 5500 deadlines and Form 5558 extensions, and for whether the plan files large or small, the audit requirement checker.
Last reviewed November 3, 2026. Penalty amounts are rechecked every January.
By the last day of the 7th calendar month after the plan year ends. For a calendar year plan that is July 31 of the following year. A short plan year is due on the last day of the 7th month after the short year ends. If the date falls on a Saturday, Sunday or federal holiday, the return may be filed on the next business day.
To the 15th day of the 3rd month after the normal due date, which the instructions describe as up to 2 1/2 months. A calendar year plan moves from July 31 to October 15. The Form 5558 must be filed on or before the normal due date, and a timely, complete form is approved automatically.
$10 for each day the return is filed after the date it was due, counted without regard to any extension. A small plan is capped at $750 per return and $1,500 per plan when several years are filed together; a large plan at $2,000 per return and $4,000 per plan. A small plan sponsored by a 501(c)(3) organization, 403(b) plans included, is capped at $750 for the whole submission.