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Deadline decision guide

ROBS Form 5500 Deadlines

Most ROBS plans do not have a deadline because July 31 appears on a calendar. They have a deadline because a specific Form 5500-series filing applies to a specific plan year, with only documented extensions or relief changing the date.

Source review date: July 31, 2026. By Dennis Shirshikov.

The core calculation

Choose the filing form, identify the plan-year end, count to the last day of the seventh month, then test weekend, holiday, extension, short-year, and final-year facts.

Direct Answer: Start With the Plan Year, Not July 31

A calendar-year plan often files by July 31, but the rule is broader than one calendar date.

Plan sponsors generally file Form 5500-series returns on the last day of the seventh month after the plan year ends; the IRS gives July 31 as the example for a calendar-year plan.[1] Form 5500, Form 5500-SF, and Form 5500-EZ instructions each require the filer to use the actual plan year and the form that applies to that year.[3][4][5]

For a ROBS-funded company, the practical order is: identify the filing form, identify the plan-year end, compute the normal due date, adjust for an applicable weekend or legal holiday, then apply only a timely Form 5558, a qualifying employer tax-return extension, or announced special relief.[5][6] The answer is educational, not a substitute for the plan administrator, TPA, CPA, ERISA counsel, or other qualified professional reviewing the actual plan year.

Choose Form 5500, Form 5500-SF, or Form 5500-EZ Before Calculating

The due-date formula is similar across the series, but the form determines the filing system, public-disclosure treatment, and correction path.

Title I plans generally start with Form 5500

A pension benefit plan covered by ERISA generally files an annual Form 5500 return/report unless an exemption or simplified reporting path applies. DOL also treats the Form 5500 Series as a reporting and disclosure tool for regulators, participants, and the public.[2][3][17][18]

Form 5500-SF is a narrow small-plan path

Form 5500-SF may be available only when all listed conditions are satisfied, including small-plan status, eligible assets, audit-waiver eligibility, and no employer securities at any time during the plan year. The regulation similarly requires no employer securities for the simplified small-plan report path.[4][16]

Form 5500-EZ is the non-Title I owner-only path

Form 5500-EZ is for one-participant plans and certain foreign plans that are not subject to ERISA section 104(a). The instructions define one-participant plans by who is covered and by ownership facts, and they generally require filing when one-participant-plan assets exceed $250,000 at year-end or when it is the final plan year.[1][5][15]

Definitions That Drive the Date

A deadline file is easier to audit when each term has one meaning.

Plan year

The calendar or fiscal year for which plan records are kept. Form 5558 asks for the plan-year end date, and Form 5500-EZ asks for the beginning and ending dates reported for the plan year.[5][6]

Normal due date

The unextended date the return would otherwise be due. Form 5558 must be filed on or before that normal due date to extend a Form 5500-series return.[6]

Short plan year

A plan year of less than 12 months. The Form 5500-SF and Form 5500-EZ instructions compute the filing date from the short plan-year end.[4][5]

Final plan year

For Form 5500-EZ, the final plan year is the year in which all plan assets are distributed or transferred. The filing is due from that final plan-year end, not from the date the owner first decides to wind down the ROBS structure.[5]

How to Calculate the Normal Deadline

The date calculation should be reproducible from the plan-year end alone before extensions are considered.

  1. 1. Record the plan-year end. Use the date in the plan records and return heading, not the corporation's tax year unless the documents actually match.[5][6]
  2. 2. Count seven calendar months after the plan-year end. If the plan year ends December 31, January is month 1 and July is month 7.[1]
  3. 3. Use the last day of month 7. The due date is not the same day number seven months later; it is the last day of that seventh calendar month.[1][5]
  4. 4. Apply the weekend or legal-holiday rule when the current instructions provide it. The 2025 Form 5500-EZ and Form 5558 instructions state that if the filing date falls on a Saturday, Sunday, or legal holiday, the return may be filed on the next day that is not one of those days.[5][6]
  5. 5. Add only supported extension or relief dates. Keep the actual Form 5558, tax-return-extension evidence, or special-relief authority with the filing file.[5][6]

Form 5558 and Corporate-Return Extension Boundaries

Extensions change the filing date only when the conditions and proof are present.

Form 5558

Form 5558 provides a one-time extension for Form 5500, Form 5500-SF, Form 5500-EZ, and Form 8955-SSA. Since January 1, 2025, it can be filed through EFAST2 or on paper with the IRS.[1][6][7]

Automatic approval

A properly completed Form 5558 is automatically approved to the requested date if filed by the normal due date and if the requested date is not later than the 15th day of the third month after the normal due date. The IRS does not return approved copies for these requests.[6]

Employer tax-return extension

A federal income-tax-return extension for the employer can extend the Form 5500-series filing only if the plan year and employer tax year are the same and the employer's extended federal return due date is later than the normal plan filing due date. Form 5500-EZ instructions also require the extension application to be retained with plan records.[5][6][13][14]

No after-the-fact stacking

If the filer relies on the employer tax-return-extension exception, a Form 5558 filed after the normal Form 5500-series due date cannot extend the filing further.[5][6]

Short Years and Final Years

Short-year and final-year facts change the plan-year end used in the calculation.

For Form 5500-SF, a short plan year is due by the last day of the seventh calendar month after the short plan year ends, or by an authorized extended due date.[4] Form 5500-EZ gives the same seventh-month rule for a short plan year and says the short year ends on the date of an accounting-period change or complete distribution of the plan's assets.[5]

A final ROBS filing should be coordinated with the business exit, employer-stock valuation, stock redemption or transfer, participant distributions, and tax reporting. The Form 5500-EZ final-return checkbox is tied to distribution or transfer of all plan assets; it is not a shortcut around unfinished plan administration.[5][8]

ROBS-Specific Employee and Employer-Stock Caveats

A ROBS filing deadline is never separate from the facts that determine the filing form.

Employee participation

The IRS warns that a one-participant 401(k) plan's no-testing advantage disappears when employees are hired and eligible employees must be included under the plan's rules. The IRS ROBS project also identified employee participation and amendments blocking other employees from company-stock access as recurring issues.[8][15]

Employer securities

ROBS commonly involves the plan buying stock in the sponsoring C corporation. That fact matters because Form 5500-SF is unavailable if the plan held employer securities at any time during the year, and ROBS valuation was one of the problems identified by the IRS project.[4][8][16]

Owner-only assumptions

The IRS ROBS project states that some promoters incorrectly advised sponsors that the one-participant exception applied, even though in a ROBS arrangement the plan, through company stock investments, owns the trade or business. Treat Form 5500-EZ eligibility as a documented legal and administrative conclusion, not a label copied from a provider package.[8]

Seven Reproducible Date Scenarios

Each example states the input, arithmetic, and result so the date can be checked independently.

Calendar-year plan, no extension

Plan year ends December 31, 2025. January is month 1, February 2, March 3, April 4, May 5, June 6, and July 7. The last day of month 7 is Friday, July 31, 2026, so no weekend adjustment is needed.[1][3][4][5]

Calendar-year plan with timely Form 5558

The same December 31, 2025 plan year has a normal due date of July 31, 2026. A Form 5558 filed on or before July 31 may request no later than the 15th day of the third month after that normal due date. August is month 1, September 2, and October 3; the ceiling is Thursday, October 15, 2026.[5][6][7]

Fiscal plan ending March 31

Plan year ends March 31, 2026. April is month 1, May 2, June 3, July 4, August 5, September 6, and October 7. The last day of month 7 is Saturday, October 31, 2026, so the next-day rule moves the unextended deadline to Monday, November 2, 2026, absent a legal holiday or special relief.[1][5][6]

Fiscal plan ending September 30

Plan year ends September 30, 2025. October is month 1, November 2, December 3, January 4, February 5, March 6, and April 7. The unextended deadline is Thursday, April 30, 2026. A timely Form 5558 could request no later than Wednesday, July 15, 2026.[1][4][5][6]

Short plan year ending June 15

Short plan year runs January 1 through June 15, 2026. July is month 1, August 2, September 3, October 4, November 5, December 6, and January 7. January 31, 2027 is a Sunday, so the next-day rule moves the unextended deadline to Monday, February 1, 2027.[4][5][6]

Final year after all assets are distributed

All plan assets are distributed or transferred on November 20, 2026, making the final short-year end November 20 under the stated facts. December is month 1, January 2, February 3, March 4, April 5, May 6, and June 7. The unextended final-return deadline is Wednesday, June 30, 2027.[3][5]

Corporate-return extension boundary

Plan year and employer tax year both end December 31, 2025. The normal plan deadline is July 31, 2026. If the employer has a federal income-tax-return extension to a date later than July 31 and keeps the evidence, the plan may use that automatic extension path until the employer's extended return due date. If the employer tax year ends June 30 while the plan year ends December 31, this exception fails because the years are not the same.[5][6][13][14]

Records to Keep With the Annual Filing

The file should prove both the filing path and the date calculation.

Computation support

Plan name, plan number, employer EIN, plan-year end, selected form, seventh-month calculation, weekend or legal-holiday check, extension path, and responsible preparer or administrator confirmation.

Form-selection support

Participant count, employee census, Title I status, one-participant analysis, employer-security conclusion, Form 5500-SF conditions, short-year status, and final-year status.

Extension proof

Form 5558 copy, EFAST2 submission or paper mailing proof, requested extended date, tax-return-extension application if used, and any special-relief authority.[5][6]

Filed-return proof

Signed return copy, electronic credentials controls, EFAST2 acceptance or paper mailing proof, unprocessable-status corrections, amended-return records, and IRS or DOL notices.[9][16]

If the Deadline Was Missed

Late filing is a form-selection and correction decision before it is a penalty calculation.

Start by identifying every affected year, the form that should have been filed, any return that was actually filed, all extension evidence, participant facts, employer-stock facts, valuation records, signatures, and notices. The IRS ROBS project specifically found nonfiling of Form 5500, Form 5500-EZ, and Form 1120 among ROBS compliance issues, so a missed deadline can point to broader administration problems.[8]

For Title I Form 5500 and Form 5500-SF filings, review DOL DFVCP and the IRS relief interface for eligible DFVCP filers. For non-Title I Form 5500-EZ filings, review the separate IRS late-filer program or reasonable-cause relief. Do not promise penalty relief until eligibility, notices, procedure, and any missing Form 8955-SSA obligations are reviewed.[10][11][12]

When to Recheck the Deadline Answer

A short recheck habit helps keep deadline decisions current.

Recheck the filing calendar when IRS or DOL publishes a new Form 5500-series instruction package, Form 5558 changes, EFAST2 rules change, disaster or special relief is announced, the plan year changes, employees become eligible, employer stock is issued, sold, redeemed, or revalued, or a short or final year is created. Those events can change the filing form, evidence needed, or date calculation.[4][5][6][8]

Next Steps Before Filing or Extending

The next action is to create a small decision file, not to rely on memory.

  1. First, match the plan's facts to Form 5500, Form 5500-SF, or Form 5500-EZ and save the support.
  2. Second, compute the normal due date from the plan-year end and check weekends, legal holidays, short-year facts, and final-year facts.
  3. Third, decide before the normal due date whether Form 5558 is needed or whether the employer tax-return-extension exception truly applies.
  4. Fourth, pair this deadline work with the Form 5500 filing requirements and annual administration checklist before the signer authorizes the filing.

Frequently Asked Questions

These answers summarize the deadline rules without replacing plan-specific review.

Is July 31 always the ROBS Form 5500 deadline?

No. July 31 is the common unextended due date for a calendar-year plan. The rule starts with the plan-year end and uses the last day of the seventh calendar month after that year ends, with any weekend, legal-holiday, extension, short-year, final-year, or special-relief adjustment supported by the current instructions.[1][3][4][5][6]

What is the deadline algorithm for a Form 5500-series ROBS filing?

Select the filing form first, identify the plan-year end, count seven calendar months after that date, use the last day of the seventh month, move forward for an applicable Saturday, Sunday, or legal holiday, and then apply only a documented Form 5558, qualifying employer tax-return extension, or announced special relief.[1][3][4][5][6]

Does every ROBS arrangement file the full Form 5500?

No. The form is a facts-and-law decision. A Title I plan generally uses Form 5500 unless it meets every Form 5500-SF condition. A true one-participant or foreign plan uses Form 5500-EZ when the Form 5500-EZ instructions require filing. ROBS employer stock and employee facts often make shortcuts unsafe.[1][3][4][5][8][15]

Why can employer stock block Form 5500-SF?

The 2025 Form 5500-SF instructions require the plan to hold no employer securities at any time during the plan year. A standard ROBS transaction has the plan purchase stock of the sponsoring C corporation, so the annual form-selection file should address that fact before anyone relies on Form 5500-SF.[4][8][16]

How long does Form 5558 extend a Form 5500-series return?

A timely, complete Form 5558 is automatically approved to the requested date if filed on or before the normal due date and the requested date is not later than the 15th day of the third month after the normal due date. For a July 31 normal due date, that ceiling is October 15.[5][6][7]

Will the IRS send back an approved Form 5558 copy?

No. Current Form 5558 instructions state that approved copies requesting extensions for Form 5500, Form 5500-SF, Form 5500-EZ, or Form 8955-SSA will not be returned. Keep the filed form and proof of timely EFAST2 or paper filing with plan records.[6][9]

Can the corporation's federal tax-return extension extend the plan filing?

Only when every condition is met. The plan year and employer tax year must be the same, the employer must have a federal income-tax-return extension to a date later than the normal Form 5500-series due date, and the evidence must be retained. Form 5558 cannot be filed after the normal due date to extend that exception further.[5][6][13][14]

Does Form 5558 extend corporate tax, payment, or PBGC obligations?

No. Form 5558 applies to the listed employee-plan returns. Its instructions state that a Form 5500-series or Form 8955-SSA extension does not extend PBGC Form 1. Corporate income-tax extensions use separate tax-return rules.[6][13][14]

How is a short plan year deadline calculated?

Use the short plan-year end as the input date. The 2025 Form 5500-SF and Form 5500-EZ instructions compute a short-year filing by the last day of the seventh calendar month after the short plan year ends, unless an authorized extension applies.[4][5]

When is a final Form 5500-series return due?

A final return follows the final plan year. For Form 5500-EZ, the instructions define the final plan year as the year in which distribution of all plan assets is completed. The due date is then computed from that plan-year end under the applicable form instructions.[3][4][5]

What should happen if a deadline was missed?

Preserve the facts before filing, identify each affected year and form, find any extension evidence, and choose the correction path by filing status. Title I Form 5500 and Form 5500-SF filings may involve DOL DFVCP and related IRS relief. Non-Title I Form 5500-EZ filings use a separate IRS late-filer program or reasonable-cause path.[10][11][12]

What proof belongs in the annual deadline file?

Keep the plan-year computation, form-selection support, participant count, employer-security conclusion, Form 5558 or tax-return-extension evidence, signed return copy, EFAST2 or paper filing proof, acceptance or mailing records, adviser review notes, and any late-filing correction documents.[5][6][9][16]

Official Sources

The sources below support federal filing mechanics; they do not decide an individual plan's filing status.

The sources were reopened for this update on July 31, 2026. They establish general federal filing, disclosure, extension, and correction rules. They do not determine whether a specific ROBS plan is compliant, which filing form applies, whether an extension was valid, or whether penalty relief will be granted.

  1. [1] IRS Form 5500 corner

    Reviewed July 31, 2026. Supports the Form 5500-series purpose, the general last-day-of-the-seventh-month deadline, the July 31 calendar-year example, EFAST2 availability for Form 5558, one-participant-plan definition, Form 5500-EZ filing path, and IRS penalty context.

  2. [2] DOL EBSA Form 5500 Series

    Reviewed July 31, 2026. Supports the Form 5500 Series reporting and disclosure purpose, EFAST2 filing for Form 5500 and Form 5500-SF, current 2025 form links, and the Form 5500-EZ electronic-or-paper distinction.

  3. [3] 2025 Instructions for Form 5500

    Reviewed July 31, 2026. Supports who files Form 5500, electronic filing, due dates, extension boxes, final and amended return concepts, public availability, signatures, and penalty warnings.

  4. [4] 2025 Instructions for Form 5500-SF

    Reviewed July 31, 2026. Supports Form 5500-SF eligibility, small-plan conditions, the no-employer-securities condition, short-year due dates, extension handling, electronic filing, and DFVCP references.

  5. [5] 2025 Instructions for Form 5500-EZ

    Reviewed July 31, 2026. Supports one-participant-plan filing, the $250,000 threshold, due dates, weekend/legal-holiday movement, short-year and final-year rules, Form 5558 retention, automatic tax-return-extension conditions, e-filing rules, and late-filer relief.

  6. [6] Form 5558 and instructions

    Reviewed July 31, 2026. Supports the one-time extension, automatic approval mechanics, requested-date ceiling, filing on or before the normal due date, separate-plan rule, no returned approved copy, no signature for Form 5500-series extension requests, EFAST2 and paper filing paths, and the corporate-return-extension boundary.

  7. [7] About Form 5558

    Reviewed July 31, 2026. Confirms the current Form 5558 revision and the listed returns covered by the extension form.

  8. [8] IRS ROBS compliance project

    Reviewed July 31, 2026. Supports the ROBS structure and IRS-identified filing, employee-participation, employer-stock, and valuation concerns. It does not approve any individual ROBS arrangement.

  9. [9] IRS electronic-signature guidance for 5500-series returns

    Reviewed July 31, 2026. Supports signature, rejection, unprocessable-status, resubmission, and signed-record retention points for Form 5500 and Form 5500-SF.

  10. [10] DOL Delinquent Filer Voluntary Compliance Program

    Reviewed July 31, 2026. Supports the DOL reduced-penalty path for eligible overdue Title I Form 5500 and Form 5500-SF filings and its stated exclusions.

  11. [11] IRS Form 5500-EZ late-filer penalty relief

    Reviewed July 31, 2026. Supports the separate IRS program for eligible non-Title I Form 5500-EZ late filers, paper submission, fee, and limitation after certain penalty notices.

  12. [12] IRS penalty relief for DOL DFVC filers

    Reviewed July 31, 2026. Supports the IRS relief interface for eligible DOL DFVCP filers, including Form 8955-SSA conditions and the distinction from Form 5500-EZ relief.

  13. [13] IRS extension overview

    Reviewed July 31, 2026. Supports the distinction between tax-return extensions, business/corporation Form 7004 extensions, and retirement-plan Form 5558 extensions.

  14. [14] IRS Instructions for Form 1120

    Reviewed July 31, 2026. Supports the separate corporate income-tax-return framework for a C corporation; used only to keep Form 1120 timing separate from plan Form 5500-series timing.

  15. [15] IRS one-participant 401(k) plans

    Reviewed July 31, 2026. Supports owner-only plan concepts, the warning that hiring employees changes testing and participation obligations, and the general $250,000 Form 5500-EZ filing threshold for one-participant plans.

  16. [16] 29 CFR 2520.103-1

    Reviewed July 31, 2026. Supports annual-report contents, the small-plan context, the no-employer-securities condition for simplified reporting, the 80-to-120 participant transition rule, and original signed-record retention.

  17. [17] ERISA section 104

    Reviewed July 31, 2026. Supports the ERISA annual-report filing and participant-disclosure framework, including the statutory 210-day baseline as modified by regulations.

  18. [18] ERISA section 106

    Reviewed July 31, 2026. Supports public-information treatment for annual reports filed with DOL under Title I, subject to statutory limits.

This educational guide is not legal, tax, fiduciary, valuation, accounting, or filing advice. Use current form instructions and qualified advisers for the actual plan year and facts.

Build the filing date before the normal due date

Use the form-selection and annual-administration guides alongside this deadline calculation.

Filing requirements Annual checklist