401(h) Plan Actuarial Valuation: What the Actuary Actually Does
The actuary is the engine room of any 401(h) design. Here's a plain-English tour of what they're modeling and why.
Key takeaways
- The actuary projects retiree medical liability and translates it into funding.
- Assumptions for cost trend, return, mortality, and turnover all drive the number.
- The incidental-benefit ratio is monitored as part of the annual exercise.
- Assumption changes are normal and material.
What the actuary models
The valuation projects the stream of qualifying retiree medical benefits the plan will pay, then values that stream using assumptions for medical-cost trend, investment return, mortality, and participant turnover. The result feeds the funding requirement.
Integration with the underlying plan
401(h) is not modeled in isolation. The actuary integrates the medical stream with the underlying retirement stream so the plan's overall funding picture stays coherent.
The incidental-benefit ratio
Aggregate medical funding compared to aggregate retirement funding is monitored as part of the valuation. Drift toward the ceiling is a signal to revisit design before it becomes a problem.
Frequently asked questions
Availability, tax treatment, and plan design depend on the facts and circumstances of the employer, plan document, participant group, and applicable law. 401h.com provides general educational information only — not tax, legal, actuarial, investment, or ERISA advice. Consult qualified tax, legal, actuarial, and plan professionals.
401h.com Editorial
401h.com
The 401h.com editorial team publishes plain-English explainers on 401(h) retiree medical benefit plans. Educational only — not tax, legal, actuarial, investment, or ERISA advice.
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