Most late Form 5500 filings are not caused by anyone deciding to ignore the deadline. They happen because the filing sits between three parties who each assume someone else is watching the calendar: the employer, the third-party administrator who prepares the return, and the auditor whose report a large plan has to attach. When the audit runs long or a census arrives late, the due date passes without anyone filing the one form that would have bought more time.
That form is Form 5558, and the fix for a missed deadline is the Department of Labor's Delinquent Filer Voluntary Compliance Program (DFVCP). This guide covers both: how the extension works, what it does not extend, and how to bring a delinquent plan back into compliance at a fraction of the penalty the agencies could otherwise assess. If you are the person in payroll or HR who ends up holding the plan calendar, this is the part of retirement plan administration you most need to own.
The starting point is the deadline Form 5558 extends. Under the Form 5500 instructions, the return/report and all required schedules and attachments are due by the last day of the 7th calendar month after the end of the plan year. For a calendar-year plan, that is July 31. A plan with a June 30 year end files by January 31. A short plan year, for example the final year of a terminated plan, is due by the last day of the 7th month after the short year ends.
If the due date falls on a Saturday, Sunday or federal holiday, the filing may be made on the next business day.
The deadline applies to the whole Form 5500 series that is filed through EFAST2 (Form 5500 and Form 5500-SF) and to Form 5500-EZ for one-participant plans. It also governs the companion Form 8955-SSA, which reports separated participants with deferred vested benefits and is filed with the IRS rather than the DOL.
Form 5558, Application for Extension of Time To File Certain Employee Plan Returns, gives a plan a one-time extension of time to file the Form 5500 series and Form 8955-SSA. The current version is the January 2025 revision, and the IRS states that the most recent revision must be used. Older versions cause processing delays.
The key rules, from the form and its instructions:
This changed recently. Beginning January 1, 2025, Form 5558 can be filed electronically through EFAST2, the same system used for the Form 5500 itself, or on paper with the IRS in Ogden, Utah. Electronic filing removes the oldest weak point in the process: a paper extension mailed in the last week of July with no reliable proof of the date it was sent. If you still file on paper, use certified mail or an IRS-designated private delivery service so you can prove timely mailing.
The form is short, but each field has to match the eventual return:
There is a second route to more time that does not require Form 5558 at all. The Form 5500 is automatically extended to the extended due date of the employer's federal income tax return when all of these conditions are met:
Two limits catch people out. First, an extension obtained this way cannot be extended further by filing Form 5558 after the normal due date. Second, the Form 5500 instructions cap it at a total of 9½ months after the close of the plan year. Tax-exempt organizations that extend their Form 990 series return with Form 8868 can use the same mechanism, subject to the same conditions.
This route only works when the plan year matches the employer's tax year. A plan with a fiscal year that differs from the company's tax year has to use Form 5558.
An extension of the Form 5500 deadline is narrower than many administrators assume. According to the Form 5500 instructions, it does not extend:
The deadlines for depositing participant deferrals, correcting failed nondiscrimination tests and distributing excess contributions are also completely separate. They run on their own clocks and are not touched by any Form 5500 extension. The 401(k) Plan Administration handbook covers the deposit timing side.
The practical failure is rarely the form. It is that nobody owns the decision to file it. A workable process looks like this:
A plan that does this every year will almost never need the rest of this article.
If the Form 5500 was not filed on time and no valid extension was in place, the plan is delinquent. The exposure comes from two agencies, under two separate penalty regimes.
Under ERISA section 502(c)(2), the DOL can assess a civil penalty against the plan administrator for each day the administrator fails or refuses to file a complete annual report. The maximum daily amount is adjusted for inflation every year and runs to thousands of dollars per day, so check the current figure on the DOL's website rather than relying on an old number. The penalty is assessed against the plan administrator personally, not the plan.
Under Internal Revenue Code section 6652(e), the IRS can impose a penalty of $250 a day, up to $150,000, for failing to file required annual returns on time. Separate Code penalties apply to a late Form 8955-SSA and to a missing actuarial schedule for defined benefit plans.
Both agencies say the penalties apply unless the failure was due to reasonable cause. Counting on a reasonable-cause argument after the fact is a poor strategy when a voluntary program exists that caps the cost in advance.
The DFVC Program lets plan administrators who are delinquent in filing annual reports under Title I of ERISA pay a reduced civil penalty in exchange for coming forward voluntarily. The DOL introduced the program in 1995, revised it in 2002 and 2013, and published a further modification effective December 19, 2025 that expanded it to late Form M-1 filers and simplified the flat-rate process for top hat and apprenticeship plans.
The program is available only to plan administrators who file before the DOL notifies them in writing of the failure to file. Once a written notice arrives, typically a notice of intent to assess a penalty, the plan is no longer eligible. This is the most important rule in the program, and the reason to act as soon as a delinquency is discovered rather than waiting until the next filing season.
The program is not available for:
DFVCP penalties are calculated as a daily amount subject to caps. There is a cap per late filing and a higher cap per plan when several years are filed in one submission. The caps are lower for small plans than for large plans, and lower again for small plans sponsored by Code section 501(c)(3) organizations. Top hat plans and apprenticeship and training plans pay a flat amount.
The program's terms are set by Federal Register notice and can be changed. Use the DOL's online DFVC penalty calculator to compute the amount for your situation instead of relying on a figure from an article. Even at its highest, the program penalty is a small fraction of the potential daily penalty outside the program.
The DOL's DFVC notices state that the plan administrator is personally liable for civil penalties under ERISA section 502(c)(2), and that penalties, including amounts paid under the DFVC Program, shall not be paid from the assets of an employee benefit plan. The employer pays from its own funds. A TPA or recordkeeper that deducts the DFVCP payment from the plan trust has created a second problem on top of the first.
Payment under the program waives the administrator's right to receive a notice of intent to assess a penalty and to contest the penalty amount for those filings.
DFVCP is a DOL program, so on its own it does not resolve the IRS penalties. The IRS addressed this in Notice 2014-35: it will not impose penalties under Code sections 6652(d), 6652(e) and 6692 on a person who is eligible for and satisfies the DFVC Program for a delinquent Form 5500 series return, provided that any required Form 8955-SSA for the same year is also filed with the IRS.
That last condition matters because Form 8955-SSA cannot be filed with the DOL under the DFVC Program. It goes to the IRS separately. Notice 2014-35 sets out how that companion Form 8955-SSA is to be filed and marked to qualify for relief. Read the notice and the current Form 8955-SSA instructions before you file, and do not assume the DOL filing covers it.
Owner-only plans, such as a solo 401(k) covering only a business owner and spouse, are not Title I plans and cannot use DFVCP. The IRS runs a separate Penalty Relief Program for Form 5500-EZ Late Filers under Rev. Proc. 2015-32. The IRS describes it as a reduced fee per delinquent return with a cap per plan, paid by check to the U.S. Treasury, with paper returns marked as filed under the revenue procedure and Form 14704 as the transmittal.
The program is not available for a year in which the IRS has already issued a CP 283 penalty notice. The same rule applies here as with DFVCP: come forward before the agency finds you.
The late filing is often a sign of a broader operational gap. Plans that miss the Form 5500 frequently also have late deferral deposits or stale plan documents, and an IRS or DOL examiner who arrives over one will look at the others. Our guide to the IRS payroll audit explains how one finding opens a wider review, and how to get payroll penalties waived covers the abatement process for the payroll tax side.
Payroll does not usually sign the Form 5500, but payroll data drives it. The participant counts, contribution totals and compensation figures on the return come from payroll records, and a census that arrives late or has to be redone is the most common reason a return is not ready by the 7th month. Payroll teams that deliver a reconciled census early in the year take the pressure off the extension decision entirely. The broader payroll and retirement plans reference explains where payroll's obligations begin and end.
If your team needs a standing reference for plan deadlines, filings and corrections, the 401(k) Procedures Manual and e-Alerts pairs the 401(k) training with a procedures manual and ongoing alerts, so changes such as the move to electronic Form 5558 filing reach the person who owns the calendar.
Form 5558 is the IRS application for a one-time extension of time to file the Form 5500 series (Form 5500, 5500-SF and 5500-EZ) and Form 8955-SSA. A timely, complete application is approved automatically and extends the deadline to the 15th day of the 3rd month after the normal due date, about two and a half months. A separate Form 5558 is required for each plan, but one form can request extensions for both a plan's Form 5500 series return and its Form 8955-SSA.
Form 5558 must be filed on or before the normal due date of the return it extends, which is the last day of the 7th calendar month after the plan year ends. For a calendar-year plan, that means filing by July 31 to extend to October 15. An extension request filed after the normal due date is not valid, and the plan is simply late. If the due date falls on a weekend or federal holiday, the next business day counts.
Yes. Beginning January 1, 2025, Form 5558 can be filed electronically through EFAST2, the DOL system used for Form 5500 filings, or on paper with the IRS in Ogden, Utah. Electronic filing gives you a dated confirmation, which is the simplest proof that the extension was timely. If you file on paper, use a method that proves the mailing date, because the IRS does not return approved copies.
The DOL can assess a per-day civil penalty against the plan administrator under ERISA section 502(c)(2), adjusted annually for inflation, and the IRS can impose a penalty of $250 a day up to $150,000 under Code section 6652(e). Both are subject to a reasonable-cause standard. Most Title I plans can sharply reduce the exposure by filing through the DOL's Delinquent Filer Voluntary Compliance Program before receiving a written notice from the DOL.
Plan administrators who are required to file under Title I of ERISA and who have not been notified in writing by the DOL of the failure to file. The program is not available for Form 5500-EZ filers, one-participant plans, amended filings, most direct filing entities, or administrators who have already received a notice of intent to assess a penalty. Owner-only plans use the IRS's separate late-filer program for Form 5500-EZ under Rev. Proc. 2015-32.
No. The DOL's DFVC notices state that the plan administrator is personally liable for civil penalties under ERISA section 502(c)(2), and that penalties, including amounts paid under the DFVC Program, may not be paid from plan assets. The employer or administrator pays from its own funds. Paying the penalty from the trust would be a separate fiduciary problem requiring its own correction.
Form 5558 is the cheapest compliance tool in retirement plan administration, and DFVCP is the cheapest repair. Both depend on someone knowing the plan's status before the 7th month ends. For structured training on running the plan year from deferrals through annual reporting, see the 401(k) Procedures Manual and e-Alerts or the 401(k) Training and Certification Program.

