Yes, defined benefit plans must file Form 5500 each year. Under ERISA Section 104, every private-sector defined benefit pension plan must submit this annual return/report to the Department of Labor. The filing requirement applies whether or not benefits are accruing, contributions were made during the year, or the plan is frozen.
The Internal Revenue Code Section 6058(a) also mandates this filing. Failure to submit Form 5500 triggers DOL civil penalties of up to $2,739 per day in 2025 with no maximum cap. The IRS separately assesses penalties of $250 per day up to $150,000 per plan year.
According to IRS data, the agency examined 277 Forms 5500 filed by defined benefit plans and 326 Forms 5500-SF in 2024.
📌 What you will learn:
- 📋 Which defined benefit plans must file Form 5500 and which are exempt
- 📊 The specific schedules required for single-employer vs. multiemployer plans
- ⚠️ Common filing mistakes and their consequences
- 💰 Penalties for late or missed filings and how to reduce them
- ✅ Step-by-step process to file electronically through EFAST2
Which Defined Benefit Plans Must File Form 5500?
Private-sector defined benefit plans covered by ERISA must file Form 5500 annually. This includes traditional pension plans, cash balance plans, and hybrid plans. The requirement applies regardless of plan size, funding status, or whether the plan is frozen.
A frozen plan that no longer accrues benefits must still file each year until all assets are distributed. The same rule applies to plans where no employer contributions were made during the year. Only after complete asset distribution can a plan administrator check the “final return/report” box.
Plans required to file Form 5500 include:
| Plan Type | Filing Requirement |
|---|---|
| Traditional defined benefit plans | Required annually |
| Cash balance plans | Required annually |
| Frozen defined benefit plans | Required until termination |
| Plans in standard termination | Required until all assets distributed |
| Church plans electing ERISA coverage | Required annually |
Defined Benefit Plans Exempt From Form 5500 Filing
Not every defined benefit plan must file Form 5500. Specific categories receive complete exemption from this reporting requirement. Understanding these exemptions prevents unnecessary filings while ensuring covered plans remain compliant.
Governmental plans sponsored by federal, state, county, or municipal entities are fully exempt from ERISA. This includes plans for public school teachers, police officers, firefighters, and state university employees. These plans follow their own reporting requirements under state law.
Non-electing church plans receive automatic exemption from ERISA requirements. A church plan qualifies when established and maintained by a church, convention, or association of churches for employees. However, if the plan sponsor files an IRC Section 410(d) election, the plan becomes subject to ERISA and must file Form 5500.
| Exempt Plan Type | Reason for Exemption |
|---|---|
| Governmental plans | ERISA Section 4(b)(1) exclusion |
| Non-electing church plans | ERISA Section 4(b)(2) exclusion |
| One-participant plans (under $250,000 in assets) | File Form 5500-EZ instead |
| Unfunded excess benefit plans | ERISA Section 4(b)(5) exclusion |
| Top-hat plans (unfunded, select group) | Alternative compliance method |
One-participant plans covering only owners and their spouses have different rules. These plans must file Form 5500-EZ instead of Form 5500 when total plan assets exceed $250,000. Plans under this threshold are exempt from annual filing until assets cross that mark. The final plan year always requires a filing regardless of asset amount.
Top-hat plans maintained primarily for a select group of management or highly compensated employees receive ERISA exemption if they remain unfunded. These plans must file a one-time registration statement with the DOL instead of annual Form 5500 returns. The registration must occur within 120 days after the plan becomes subject to ERISA.
The Required Schedules for Defined Benefit Plans
Defined benefit plans must attach specific schedules to Form 5500 based on plan size and characteristics. The schedules report actuarial information, financial data, and compliance details. Missing or incomplete schedules result in rejected filings and potential penalties.
Schedule SB applies to single-employer defined benefit plans and certain multiple-employer plans. An enrolled actuary must prepare and sign this schedule. It reports the plan’s funding target, value of plan assets, minimum required contribution, and any funding deficiency.
The enrolled actuary certification on Schedule SB verifies the plan meets minimum funding standards under IRC Section 412. Without this certification, the filing is incomplete. The actuary must also disclose the assumptions used to calculate plan liabilities.
Schedule MB applies to multiemployer defined benefit plans and money purchase plans with funding waivers being amortized. This schedule reports similar actuarial information as Schedule SB but includes additional data specific to multiemployer arrangements. Plans in endangered, critical, or critical and declining status must attach supporting documentation.
| Schedule | Applies To | Key Information Reported |
|---|---|---|
| Schedule SB | Single-employer DB plans | Funding target, assets, minimum contribution |
| Schedule MB | Multiemployer DB plans | Funding adequacy, plan zone status |
| Schedule R | All pension plans subject to minimum funding | Distributions, funding waivers, plan amendments |
| Schedule H | Large plans (100+ participants) | Complete financial statements, audit report |
| Schedule I | Small plans (under 100 participants) | Simplified financial information |
Schedule R must be filed for any pension plan subject to the minimum funding requirements of IRC Section 412 or ERISA Section 302. This includes all defined benefit plans except those fully exempt from ERISA. The schedule reports distributions paid in property, funding information, and whether the plan has received a funding waiver.
Small Plan vs. Large Plan Filing Requirements
Plan size determines which form version and schedules a defined benefit plan must file. The distinction between small and large plans affects audit requirements, financial reporting complexity, and overall compliance burden. Plan administrators must count participants correctly to avoid filing errors.
A small plan has fewer than 100 participants at the beginning of the plan year. These plans may file Form 5500-SF (Short Form) if they meet additional eligibility conditions. They must also have 100% of assets invested in qualifying plan assets with readily determinable fair market value.
A large plan has 100 or more participants at the beginning of the plan year. These plans must file the full Form 5500 with Schedule H and attach an independent qualified public accountant (IQPA) audit report. The audit requirement adds significant cost and administrative burden.
| Filing Requirement | Small Plan (Under 100) | Large Plan (100+) |
|---|---|---|
| Form version | Form 5500-SF eligible | Full Form 5500 required |
| Financial schedule | Schedule I | Schedule H |
| Audit required | No (if conditions met) | Yes, IQPA report required |
| Service provider reporting | Limited | Full Schedule C required |
| Filing complexity | Lower | Higher |
The 80/120 participant rule provides flexibility for plans near the threshold. A plan that filed as a small plan in the prior year can continue filing that way as long as the participant count stays below 120 at the beginning of the current year. This prevents plans from constantly switching between small and large plan filings.
A plan crossing the 100-participant threshold for the first time must file as a large plan. Once a plan files as a large plan, it must continue doing so until the participant count drops below 100. The transition between classifications requires careful monitoring.
Three Common Scenarios for Defined Benefit Plan Filing
Scenario 1: New Defined Benefit Plan Filing
Dr. Martinez establishes a cash balance plan for her medical practice on July 1, 2025. The plan covers her and three employees. Total plan assets at year-end equal $175,000.
| Situation | Required Action |
|---|---|
| Plan has fewer than 100 participants | May file Form 5500-SF if eligible |
| Assets under $250,000 | Owner-only plan would be exempt; this plan has employees |
| First-year filing | Due July 31 of following year |
| Schedule SB required | Enrolled actuary must certify |
Dr. Martinez must file Form 5500-SF (if eligible) or full Form 5500 by July 31, 2026. The plan requires Schedule SB because it is a defined benefit plan subject to minimum funding requirements. The enrolled actuary completes the schedule showing the funding target, contribution amount, and actuarial assumptions.
Scenario 2: Frozen Defined Benefit Plan
ABC Manufacturing froze its traditional pension plan in 2018. No new benefits accrue, but the plan still holds $12 million in assets for 85 participants. The company questions whether annual filing remains necessary.
| Situation | Required Action |
|---|---|
| Plan is frozen but not terminated | Annual Form 5500 still required |
| Plan holds assets | Cannot file final return until assets distributed |
| Under 100 participants | May file as small plan |
| PBGC premiums | Still due annually |
ABC Manufacturing must continue filing Form 5500 each year until all assets are distributed. The Form 5500 includes a question asking whether the plan is hard-frozen. The company must also continue paying PBGC premiums and meeting all other reporting requirements. Only after complete termination and asset distribution can ABC file a final return.
Scenario 3: Plan Termination
XYZ Corporation decides to terminate its defined benefit plan. The plan has 45 participants and $8 million in assets. The termination date is September 30, 2025.
| Situation | Required Action |
|---|---|
| Standard termination initiated | Continue filing until assets distributed |
| Assets not yet distributed | Cannot mark “final return” box |
| Short plan year possible | File for period ending at termination |
| AFTAP certification needed | Required for terminating plans |
XYZ must file Form 5500 for every year the plan holds assets. The termination process often takes 12-18 months to complete. The final Form 5500 must show zero assets and zero participants. XYZ needs Schedule SB for the last two years, including the termination year. The enrolled actuary must also certify the adjusted funding target attainment percentage (AFTAP).
Form 5500 Filing Deadlines for Defined Benefit Plans
Form 5500 is due by the last day of the seventh month after the plan year ends. For calendar-year plans, this means July 31 each year. Filing after this date without an extension triggers automatic penalties from both the DOL and IRS.
Plan administrators can request a 2½-month extension by filing Form 5558 before the original due date. This extends the deadline to October 15 for calendar-year plans. The extension request must be filed with the IRS. Beginning January 2025, Form 5558 can be filed electronically through EFAST2 or by paper.
| Plan Year End | Normal Due Date | Extended Due Date |
|---|---|---|
| December 31 | July 31 | October 15 |
| March 31 | October 31 | January 15 |
| June 30 | January 31 | April 15 |
| September 30 | April 30 | July 15 |
An automatic extension applies when the plan year matches the employer’s tax year. If the employer receives an extension for its federal income tax return to a date later than the normal Form 5500 due date, the Form 5500 deadline automatically extends. This extension cannot exceed 9½ months from the plan year end.
Important: An extension for Form 5500 does not extend the deadline for PBGC premium filings. Defined benefit plans must file PBGC premiums by separate deadlines.
How to File Form 5500 Through EFAST2
All Form 5500 filings must be submitted electronically through the EFAST2 system. Paper filings are not accepted. The DOL operates this system in partnership with the IRS and PBGC. Understanding the filing process prevents rejected returns and penalties.
Step 1: Obtain EFAST2 Credentials
Register at www.efast.dol.gov to create signing credentials. Select “Filing Signer” as your user type. Complete the registration and confirm your email address. The DOL issues a User ID and 4-digit PIN for signing filings.
Step 2: Gather Required Information
Collect all plan data needed for the filing:
- Employer identification number (EIN)
- Plan number (three digits, typically 001)
- Plan year beginning and ending dates
- Number of participants (active, terminated vested, retired)
- Financial information (assets, liabilities, contributions)
- Actuarial reports for defined benefit plans
Step 3: Complete the Form and Schedules
Use EFAST2’s web-based system (IFILE) or approved third-party software. Enter all required information for Form 5500 and applicable schedules. Attach Schedule SB or Schedule MB as a PDF signed by the enrolled actuary. Check all entries for accuracy before submission.
Step 4: Sign and Submit
The plan administrator or authorized representative must electronically sign using EFAST2 credentials. Submit the filing through EFAST2. Check the filing status within 20 minutes. A “Filing Received” status confirms successful submission. Any other status requires correction and resubmission.
Mistakes to Avoid When Filing Form 5500
Filing errors lead to rejected returns, delayed processing, and potential penalties. The DOL and IRS identify common mistakes that plan administrators make repeatedly. Avoiding these errors saves time and money.
Mistake 1: Incorrect Participant Count
Counting participants incorrectly affects which form version to file and whether an audit is required. For defined benefit plans, a participant includes anyone eligible to receive a benefit accrual during the year. Vesting status does not matter. Counting spouses and beneficiaries as participants is incorrect.
Consequence: Filing the wrong form version, missing audit requirements, potential penalties.
Mistake 2: Missing or Incomplete Schedule SB/MB
The actuarial schedule is a required attachment for defined benefit plans. Some filers forget to include it or attach an unsigned version. The enrolled actuary must sign and certify the schedule before filing.
Consequence: Rejected filing, penalties for incomplete submission.
Mistake 3: Filing Final Return With Assets Remaining
Checking the “final return/report” box while the plan still holds assets is a frequent error. A plan can only file a final return after all assets are distributed to participants or transferred to another plan.
Consequence: IRS inquiry, required amended filing, potential audit.
Mistake 4: Confusing Single-Employer and Multiemployer Plans
Selecting the wrong plan type affects which schedules are required. A single-employer plan includes plans maintained by a controlled group of businesses. A multiemployer plan involves a collectively bargained agreement between multiple unrelated employers and a union.
Consequence: Filing wrong schedules, rejected return, resubmission required.
Mistake 5: Late Filing Without Extension
Missing the deadline without filing Form 5558 triggers automatic penalties. Some administrators assume the extension is automatic. It is not. You must affirmatively file the extension request by the original due date.
Consequence: DOL penalty of $2,739 per day, IRS penalty of $250 per day.
Penalties for Form 5500 Violations
Failure to file Form 5500 or filing an incomplete return results in significant penalties. The DOL, IRS, and PBGC each have independent penalty authority. Understanding these penalties motivates timely compliance.
| Agency | Penalty Type | Amount (2025) |
|---|---|---|
| DOL | Failure to file Form 5500 | $2,739 per day, no maximum |
| IRS | Late filing penalty | $250 per day, up to $150,000 |
| PBGC | Late premium filing | $2,739 per day |
| DOL | Non-filer notice | $780 per day, up to $78,000 per year |
The Delinquent Filer Voluntary Compliance Program (DFVCP) offers reduced penalties for voluntary compliance. Plan administrators who file delinquent returns before receiving DOL notice can pay significantly lower penalties. The basic DFVCP penalty is $10 per day for each late filing.
Maximum DFVCP penalties are capped based on plan size:
| Plan Size | Per Filing Cap | Multiple Years Cap |
|---|---|---|
| Small plans (under 100 participants) | $750 | $1,500 |
| Large plans (100+ participants) | $2,000 | $4,000 |
The IRS generally waives its late filing penalties for plans that satisfy the DFVCP requirements. This provides additional incentive to use the program rather than simply ignoring delinquent filings.
PBGC Reporting Requirements for Defined Benefit Plans
Defined benefit plans covered by PBGC insurance have additional reporting obligations beyond Form 5500. The Pension Benefit Guaranty Corporation insures benefits and requires annual premium payments. Most private-sector defined benefit plans that meet tax qualification requirements are covered.
Premium Filing Requirements
Plan administrators must file PBGC premiums through the My Plan Administration Account (My PAA) online system. Electronic filing is mandatory for all covered plans. The premium consists of two components for single-employer plans: a flat-rate premium and a variable-rate premium based on unfunded vested benefits.
| Premium Type | 2026 Rate (Single-Employer) | 2026 Rate (Multiemployer) |
|---|---|---|
| Flat-rate premium | Per participant | $40 per participant |
| Variable-rate premium | Based on unfunded vested benefits | Not applicable |
Premium Due Dates
Premium due dates depend on plan size and other factors. Most plans file by the normal premium due date, which is the 15th day of the 10th full calendar month following the month in which the plan year began. New plans and plans changing their plan year have modified deadlines.
Reportable Events
Certain events must be reported to PBGC within 30 days of occurrence. These include significant underfunding, active participant reductions, and bankruptcy filings. Failure to report triggers separate penalties.
Pros and Cons of Form 5500 Filing Requirements
| Pros | Cons |
|---|---|
| Transparency: Filing provides participants insight into plan funding status | Administrative burden: Preparing schedules requires time and professional fees |
| Regulatory oversight: DOL monitoring helps protect participant benefits | Cost: Actuarial certifications and audits (for large plans) are expensive |
| Public accountability: Filed returns are publicly available, encouraging responsible plan management | Complexity: Multiple schedules with technical requirements increase error risk |
| Problem identification: Annual reporting helps identify funding issues early | Penalty exposure: Even minor filing errors can trigger significant penalties |
| DFVCP availability: Voluntary compliance program reduces penalties for late filers | Coordination required: Multiple parties (actuary, auditor, administrator) must coordinate |
Do’s and Don’ts for Form 5500 Filing
Do:
✅ File electronically through EFAST2 — Paper filings are not accepted. All Form 5500 submissions must go through the EFAST2 system.
✅ Request extension before the deadline — File Form 5558 by July 31 (for calendar-year plans) to obtain an automatic 2½-month extension.
✅ Verify participant counts annually — Incorrect counts affect form version, audit requirements, and penalty calculations.
✅ Obtain signed actuarial certification — The enrolled actuary must sign Schedule SB or MB before the filing is submitted.
✅ Keep copies of all filings — Maintain signed copies as part of plan records. Participants can request copies under ERISA.
Don’t:
❌ Don’t include Social Security numbers — Using SSNs instead of EINs violates privacy requirements and may cause rejection.
❌ Don’t check “final return” with assets remaining — Only mark this box after all assets are distributed and the plan is fully terminated.
❌ Don’t assume automatic extensions — You must affirmatively file Form 5558 or meet the conditions for employer tax return extension.
❌ Don’t ignore DFVCP for late filings — Using the program dramatically reduces penalties compared to waiting for DOL enforcement.
❌ Don’t file Schedule SSA with Form 5500 — The annual registration statement (Form 8955-SSA) goes directly to the IRS, not through EFAST2.
The Role of the Enrolled Actuary
Defined benefit plans require an enrolled actuary to perform annual valuations and certify funding adequacy. This professional holds credentials from the Joint Board for the Enrollment of Actuaries. No defined benefit plan can operate without actuarial involvement.
The enrolled actuary calculates the plan’s minimum required contribution each year. This calculation considers the plan’s funding target, asset values, and actuarial assumptions about mortality, interest rates, and turnover. The actuary must sign Schedule SB or Schedule MB to certify these calculations.
Key Actuarial Responsibilities:
| Responsibility | Description |
|---|---|
| Annual valuation | Calculate funding target and minimum contribution |
| Schedule SB/MB certification | Sign and attest to actuarial information |
| AFTAP certification | Certify adjusted funding target attainment percentage |
| Assumption selection | Choose mortality tables, interest rates, other assumptions |
| Compliance monitoring | Ensure plan meets minimum funding standards |
The AFTAP certification determines whether the plan faces benefit restrictions under IRC Section 436. If the AFTAP falls below certain thresholds, the plan cannot pay lump sums exceeding a specified limit, cannot make prohibited amendments, or must freeze benefit accruals. The actuary must certify the AFTAP by certain deadlines throughout the year.
Most third-party administrators include enrolled actuary services as part of their defined benefit plan administration packages. Plan sponsors typically do not need to hire an independent actuary separately.
FAQs
Do frozen defined benefit plans file Form 5500?
Yes. A frozen plan must file annually until all assets are distributed and the plan terminates completely.
Do church defined benefit plans file Form 5500?
No. Non-electing church plans are exempt. Plans electing IRC Section 410(d) coverage must file.
Do governmental defined benefit plans file Form 5500?
No. Federal, state, and local government plans are exempt from ERISA and Form 5500.
Do one-participant defined benefit plans file Form 5500?
No. These plans file Form 5500-EZ with the IRS when assets exceed $250,000.
Do cash balance plans file Form 5500?
Yes. Cash balance plans are defined benefit plans and must file Form 5500 with Schedule SB.
Is Schedule SB required for all defined benefit plans?
Yes. Single-employer defined benefit plans subject to minimum funding must attach Schedule SB.
Can I file Form 5500 on paper?
No. All Form 5500 filings must be submitted electronically through EFAST2.
What is the penalty for late Form 5500 filing?
Yes, there are penalties. The DOL charges $2,739 per day in 2025 with no maximum cap.
Can I get an extension to file Form 5500?
Yes. File Form 5558 by the original due date for an automatic 2½-month extension.
Do I need an audit for my defined benefit plan?
Yes, if the plan has 100 or more participants at the beginning of the plan year.
Is PBGC reporting separate from Form 5500?
Yes. PBGC premiums and reportable events have separate filing requirements and deadlines.
Can I reduce penalties for late filing?
Yes. The DFVCP program offers reduced penalties for voluntary compliance before DOL notice.
Related reading
- Who Files Form 5500? (w/Examples) + FAQs
- Are Defined Benefit Plans Qualified? (w/Examples) + FAQs
- Is a Defined Benefit Plan Worth It? (w/Examples) + FAQs
- Does ERISA Apply to Deferred Compensation Plans?(w/Examples) + FAQs
- Do You File Form 5500-EZ the Year You Close a Solo 401(k)? (w/Examples) + FAQs
- Form 5500-EZ vs. 5500-SF: Which Does a Solo 401(k) File? (w/Examples) + FAQs
- How to Fill Out IRS Form 8300 (w/Examples) + FAQs