Review partial termination before using ordinary forfeitures
A qualified retirement plan can experience a partial termination when a transaction or workforce reduction affects a significant portion of participants. IRS guidance describes a rebuttable presumption at a turnover rate of at least twenty percent, with facts and circumstances relevant above and below that level. Affected participants must be fully vested to the extent required under the applicable rules. A seller should not use ordinary vesting percentages and projected forfeitures without this review when a sale changes employment for a large group.
The decision differs from simply deciding whether the whole plan will terminate. A plan can remain open while a partial termination affects certain participants. Give the plan administrator and benefits counsel the transaction structure, employee destinations, layoffs, resignations, and plan continuity. Ask which participants and periods enter the analysis and whether any successor-plan treatment matters. The owner needs the actual turnover and vesting conclusion before pricing retained plan liabilities or relying on forfeitures to reduce final employer funding.
Calculate the participant effect rather than only headcount
Assume a hypothetical plan begins the relevant period with 100 participating employees and the supported calculation identifies 25 employer-initiated severances, producing a twenty-five-percent rate under those simplified assumptions. That warrants the partial-termination review; this example does not establish the final denominator or legal outcome. Suppose the affected people have $160,000 of employer-account amounts otherwise unvested. If the completed analysis requires full vesting, those amounts cannot be treated as ordinary forfeitures available under the prior forecast.
The $160,000 may already be held in plan assets, so full vesting does not necessarily require an immediate new $160,000 contribution. Its economic effect can instead be loss of an expected forfeiture offset, different participant benefits, and additional administration. Model the actual consequence with the administrator. If the final contribution estimate previously assumed a $60,000 forfeiture credit that is no longer available, that $60,000 changes the sponsor's funding forecast. Keep account ownership, contribution cash, and administrative fees separate rather than presenting vesting acceleration as one universal cash bill.
Reconstruct employer-initiated severances and plan continuity
Collect beginning and ending census, hires, terminations, reasons for departure, rehires, transfers, and participation records. Distinguish voluntary turnover from employer-initiated events using supportable facts. IRS guidance discusses ordinary turnover and relevant circumstances, so a label entered by payroll is not necessarily the entire answer. Preserve documentation supporting the treatment of employees who left while a sale announcement or shutdown plan was pending.
Give the administrator the buyer's plan documents and transition arrangement where relevant. Employees continuing with a buyer can present different facts from workers who lose employment and benefits, and the applicable rules must be reviewed. Do not count every technical payroll termination as an identical severance. Conversely, do not exclude people merely because the buyer offered some employment on different terms. Have the specialist document the conclusion, methodology, and assumptions for the actual transfer rather than importing the result from a prior acquisition.
Update distributions and forfeiture accounting
Suspend unsupported forfeiture assumptions while the review is unresolved and obtain professional instructions for affected distributions. A participant paid using an old percentage may need correction if additional vesting is required. Reconcile account sources, service, prior distributions, forfeiture balances, and employer contribution calculations. The plan's recordkeeper should receive a documented instruction from the responsible administrator rather than an owner email requesting that everyone be marked fully vested without identifying the event and affected population.
Allocate professional fees, correction costs, and any additional sponsor funding in the purchase agreement and proceeds reserve. The allocation between parties does not determine participant rights, but it matters to who pays the remaining work. Preserve access to census and payroll after closing, since the analysis can involve the full applicable period. If later layoffs or rehires change relevant facts, return them to the administrator instead of treating the closing-date snapshot as a permanent conclusion.
Close the event with participant-level evidence
Retain the turnover computation, legal and administrative analysis, affected-participant list, vesting instructions, corrected records, and funding reconciliation. Give the seller and buyer a clear statement of completed and remaining tasks without disclosing unnecessary personal information. The owner should finish with a supported sale-specific plan result and a reserve reflecting actual funding and fees. That prevents a workforce transaction from leaving participants underpaid or the seller's final distribution overstated by forfeitures that were never legally available.
Sources & further reading
Consult the original guidance and its effective dates. These references support the educational discussion; their application depends on the specific facts.