Terminating a defined benefit plan runs on one of two tracks under ERISA: a standard termination if the plan can pay every promised benefit, or a distress termination if the sponsor is in serious financial trouble and cannot. Either way, you work through a fixed sequence of board action, participant notices, actuarial certification, filings with the Pension Benefit Guaranty Corporation (PBGC) and the IRS, distribution of all plan assets, and a final post-distribution certification. Deadlines chain back to the proposed termination date, and missing one can void the whole termination and force you to start over.
Which Termination Path Applies
A standard termination is available when the plan’s assets cover every participant’s benefits, or the employer will contribute the shortfall to reach full funding. An enrolled actuary certifies that the plan can meet all benefit commitments as of the proposed termination date. This is the more common route and the one most sponsors prefer, because it keeps the timeline and closeout under their control.
A distress termination is the only option when the sponsor cannot fully fund the plan. ERISA limits it to sponsors (and every member of the controlled group) that meet one of four hardship tests: a bankruptcy liquidation petition that has not been dismissed; a bankruptcy reorganization in which the court finds the sponsor cannot pay its debts under a reorganization plan and cannot keep operating unless the plan terminates; a demonstration to the PBGC that the sponsor cannot pay its debts as they come due and cannot continue in business without termination; or a showing that pension costs have become unreasonably burdensome solely because the covered workforce has declined.
If the PBGC approves a distress termination and the plan is underfunded, the PBGC becomes trustee and guarantees benefits up to a statutory ceiling. For plans terminating in 2026, that ceiling is $7,789.77 per month for a participant retiring at age 65 on a straight-life annuity.1Pension Benefit Guaranty Corporation. Maximum Monthly Guarantee Tables The employer stays liable to the PBGC for the plan’s unfunded benefit obligations, which typically becomes a major claim in the bankruptcy.2Office of the Law Revision Counsel. 29 U.S. Code 1341 – Termination of Single-Employer Plans On top of that, the PBGC charges a termination premium of $1,250 per participant, payable annually for three years after certain distress and involuntary terminations.3Pension Benefit Guaranty Corporation. Termination Premium Payment Package Regular PBGC premiums for the final plan year are still due as well.
Steps Before Any Agency Filing
The groundwork for a termination begins months before the first form goes to the PBGC. This is where most problems originate.
Board Resolution and Plan Freeze
The sponsor’s board of directors, or equivalent governing body, adopts a resolution to terminate the plan and sets a proposed termination date. The plan document is then amended to freeze all benefit accruals as of that date, so no additional benefits are earned after the cutoff.
Freezing accruals triggers a separate notice under Section 204(h) of ERISA. The plan administrator must notify all affected participants and beneficiaries before the freeze takes effect: at least 45 days in advance for plans with 100 or more participants, or 15 days for smaller plans.4eCFR. 26 CFR 54.4980F-1 – Notice Requirements for Certain Pension Plan Amendments Significantly Reducing the Rate of Future Benefit Accrual Skipping the 204(h) notice can render the amendment ineffective and disrupt the termination timeline.
Actuarial Certification
An enrolled actuary calculates the present value of every participant’s accrued benefit as of the proposed termination date, using the interest rates and mortality assumptions the regulators require. For a standard termination, the actuary certifies that plan assets are sufficient to cover these benefit commitments. That certification is the financial backbone of the whole process. If the numbers show a shortfall, the sponsor must commit to funding it before distributions can happen.
Notice of Intent to Terminate
The plan administrator issues a Notice of Intent to Terminate (NOIT) to every affected party (participants, beneficiaries, alternate payees, and any employee organizations) at least 60 days but no more than 90 days before the proposed termination date.5eCFR. 29 CFR 4041.23 – Notice of Intent to Terminate The NOIT identifies the plan, states the intent to terminate, and gives the proposed termination date. Missing the 60-day minimum invalidates the termination, and you have to start over with a new NOIT and a new proposed date.
Notice of Plan Benefits
Before or at the same time the administrator files the standard termination notice with the PBGC, every affected party (other than the PBGC and employee organizations) must receive an individualized Notice of Plan Benefits (NOPB). The NOPB tells each person the amount and form of their benefit, the personal data used to calculate it, whether the amount is an estimate, and the interest rates and mortality tables used so they can verify the math.6eCFR. 29 CFR 4041.24 – Notice of Plan Benefits Participants get the chance to correct personal data they believe is wrong.
Filings With the PBGC and IRS
Once the NOIT and NOPB have gone out, the formal filings begin. Every deadline in this stage runs from the proposed termination date.
PBGC Form 500 for a Standard Termination
The plan administrator files PBGC Form 500 (Standard Termination Notice), Schedule EA-S (the actuary’s certification of sufficiency), and Schedule REP-S (designation of representative) no later than 180 days after the proposed termination date.7Pension Benefit Guaranty Corporation. Standard Termination Filing Instructions Missing that deadline voids the termination.
The PBGC then has 60 days after receiving a complete Form 500 to review for procedural compliance and the accuracy of the actuarial work. If the agency finds problems, it issues a Notice of Noncompliance, which halts the termination. If no such notice arrives within 60 days, the administrator may proceed with distributing assets.8eCFR. 29 CFR 4041.26 – Notice of Noncompliance
PBGC Forms 600 and 601 for a Distress Termination
For a distress termination, the NOIT is filed on PBGC Form 600, which goes to both affected parties and the PBGC. The administrator then files Form 601 (Distress Termination Notice), including Schedule EA-D, with the PBGC on or before the 120th day after the proposed termination date.9Pension Benefit Guaranty Corporation. Distress Terminations Form 601 requires extensive financial data proving the sponsor meets one of the four distress tests. PBGC review of a distress filing is far more involved than a standard termination review and can take substantially longer.
IRS Form 5310 Determination Letter
Filing IRS Form 5310 asks the IRS for a determination letter confirming the plan kept its tax-qualified status through termination.10Internal Revenue Service. Terminating a Retirement Plan It is optional but strongly recommended, because without a favorable letter the IRS can later challenge the plan’s qualified status and put the tax treatment of the trust and distributions at risk. The IRS user fee for a single-employer plan filing Form 5310 in 2026 is $4,500. Processing often runs six months or longer, which frequently makes this the longest wait in the timeline. Many sponsors hold off on final distributions until the determination letter arrives, though nothing legally requires that.
Premiums Keep Running Until Closeout
The plan owes annual PBGC premiums until the termination process is finished and all assets have been distributed. For 2026 plan years, the single-employer flat-rate premium is $111 per participant, and the variable-rate premium is $52 per $1,000 of unfunded vested benefits, capped at $751 per participant.11Pension Benefit Guaranty Corporation. Comprehensive Premium Filing Instructions for 2026 Plan Years A termination that drags across multiple years means multiple years of premiums, a cost sponsors sometimes underestimate.
Distributing Plan Assets
Distributions can begin only after the PBGC’s 60-day review period passes without a Notice of Noncompliance in a standard termination, or after PBGC approval in a distress termination. The administrator has a fiduciary duty to settle every participant’s benefit, using two primary methods.
Annuity Purchases and the Safest-Available-Annuity Duty
For participants already receiving monthly payments and for anyone electing a lifetime income stream, the administrator purchases an irrevocable annuity contract from a private insurance company. The annuity replaces the plan trust as the source of ongoing payments.
Picking the insurer is one of the most consequential fiduciary decisions in the process. Under DOL guidance, the fiduciary must take steps to obtain the “safest available annuity,” not simply the cheapest. That means an objective, thorough search beyond insurance rating agencies, weighing the insurer’s investment portfolio quality, capital and surplus levels, size relative to the proposed contract, exposure to liability across its business lines, the structure and guarantees of the annuity contract, and the availability of state guaranty association protection.12eCFR. 29 CFR 2509.95-1 – Interpretive Bulletin Relating to the Fiduciary Standard Under ERISA in Selecting an Annuity Provider Fiduciaries who lack the expertise to evaluate those factors need to hire a qualified independent expert.
Lump-Sum Distributions
Participants whose accrued benefit has a present value of $7,000 or less can generally be cashed out involuntarily with a lump sum. SECURE 2.0 raised this threshold from $5,000 to $7,000 for distributions made after December 31, 2023. Anyone with a benefit above $7,000 has to consent to a lump sum, if the plan document allows lump-sum elections at all; otherwise the benefit is settled through an annuity purchase.
Recipients need clear disclosure of the tax consequences. A direct distribution triggers immediate income tax and, for anyone under age 59½, a potential 10% early distribution penalty. Rolling the lump sum into an IRA or another qualified plan avoids both. Administrators typically include rollover election forms with the distribution paperwork.
Missing Participants
Locating every participant is one of the most time-consuming parts of a termination, especially for plans that have existed for decades. The administrator must conduct a diligent search for anyone who cannot be found, including use of a commercial locator service.13Pension Benefit Guaranty Corporation. Finding Missing Participants When Your Plan Terminates
If the search fails, the PBGC’s Missing Participants Program offers two options: buy an annuity in the missing person’s name and report the annuity details to the PBGC, or transfer an equivalent amount of money directly to the PBGC for safekeeping until the person is found. Either way, the administrator provides the PBGC with identifying information, benefit data, and beneficiary designations when filing the post-distribution certification. Unresolved missing-participant issues prevent the plan from closing.
Surplus Assets
After every benefit commitment has been satisfied, money may remain in the trust. Whether the employer can recover that surplus depends entirely on the plan document. If the document does not explicitly permit a reversion to the employer, the surplus must be allocated to participants.
When the plan does allow a reversion, the employer owes a 20% excise tax on the amount recovered under Internal Revenue Code Section 4980. That rate jumps to 50% if the employer fails to either establish a qualified replacement plan or provide pro-rata benefit increases to participants in the terminated plan.14Office of the Law Revision Counsel. 26 U.S. Code 4980 – Tax on Reversion of Qualified Plan Assets to Employer Between the excise tax and regular income tax on the reversion, the employer often keeps less than half of the surplus. Many sponsors choose to enhance participant benefits or transfer the excess into a replacement plan instead.
Closing Out the Plan
A termination is not legally complete until the administrator certifies to the regulators that every asset has been distributed and all final returns have been filed.
Post-Distribution Certification on PBGC Form 501
Within 30 days after the last distribution to any affected party, the administrator files PBGC Form 501, certifying that all benefit commitments have been settled through annuity purchases, lump sums, or transfers to the PBGC’s Missing Participants Program.15eCFR. 29 CFR 4041.29 – Post-Distribution Certification The PBGC issues a final acknowledgment letter, confirming the plan is no longer subject to Title IV of ERISA. Until Form 501 is filed, the PBGC considers the plan open.
Final Tax Returns
A final Form 5500 is required for the plan year in which all assets are distributed, marked as the plan’s final filing so both the DOL and IRS know the plan has ceased to exist. The plan trust may also need a final Form 1041. Late filing of either form can trigger substantial penalties.
Record Retention
ERISA requires retention of records necessary to determine any participant’s benefit for at least six years after the filing date of the documents based on that information.16Department of Labor. Recordkeeping in the Electronic Age In practice, many employers keep the key documents indefinitely, particularly actuarial reports, participant data, annuity contracts, and distribution records. Those records are needed to respond to future benefit claims, regulatory audits, or disputes with the annuity issuer. For participants whose benefits were settled through annuities, the practical retention need extends until the last payment is made.
Partial Plan Terminations Are a Different Situation
If you are not actually shutting the plan down but a large group of participants is losing coverage through layoffs or a restructuring, that is a partial plan termination, and the rules above do not apply. The IRS presumes a partial termination when the plan has a turnover rate of 20% or more of participants during the applicable period.17Internal Revenue Service. Partial Termination of Plan The practical consequence is that every affected participant must become 100% vested in their accrued benefits, regardless of the plan’s normal vesting schedule. The obligation is retroactive and expensive to fix if it surfaces years later in an IRS audit, so any sponsor conducting a substantial workforce reduction should evaluate whether the rule has been triggered.