When a qualified retirement plan experiences a significant reduction in participation, or circumstances lead to a cessation or reduction of benefit accruals for a specific group of employees, a calculation must be performed to determine if a “partial termination” has occurred. This determination requires evaluating the percentage of plan participants who have been excluded from participation due to employer-initiated actions or significant corporate events like a plant closing or a layoff. For instance, if 20% or more of the plan participants are involuntarily terminated within a single plan year, the Internal Revenue Service (IRS) generally considers this strong evidence of such an event.
The proper identification and subsequent calculation is crucial to maintain the plan’s qualified status under Internal Revenue Code Section 401(a). Failure to acknowledge and rectify such an event can lead to disqualification of the plan, resulting in adverse tax consequences for both the employer and the employees. Historically, careful assessment and meticulous records were essential to demonstrate compliance. Correcting these issues promptly safeguards participants’ accrued benefits and prevents potentially costly penalties and litigation, ensuring the integrity and longevity of the retirement plan.