Defined Benefit Plan + 401(h): How the Strategy Works

Traditional defined benefit plans provide the qualified-plan structure that a 401(h) sub-account attaches to. This combination creates a powerful vehicle for employers to pre-fund retiree medical benefits in a tax-advantaged manner. The DB plan defines the retirement-benefit stream, providing a stable foundation for the overall structure.

The 401(h) sub-account, in turn, defines the retiree medical-benefit stream. Together, these two components are valued, funded, and reported as one integrated plan, simplifying administration while maximizing the benefits. This strategy is particularly appealing to high-income earners and small business owners looking for robust, tax-efficient ways to provide for their post-employment healthcare.

The careful design of the medical benefit stream within a 401(h) sub-account is crucial for its effectiveness and compliance. Plan designers must precisely describe the eligible retiree class, outlining who qualifies for these medical benefits. This includes criteria such as years of service, age, and retirement status.

Further, the design must specify the qualifying medical benefits, whether they cover premiums, out-of-pocket expenses, or a combination. The reimbursement or premium structure needs to be clearly defined, alongside the procedures for claims submission and approval. Each choice in this design process has significant actuarial and compliance consequences, requiring expert guidance to navigate successfully.

A key advantage of combining a DB plan with a 401(h) sub-account is the ability to conduct a unified actuarial valuation. This comprehensive valuation models both retirement and medical benefit streams under consistent assumptions, ensuring accuracy and efficiency.

The critical incidental-benefit test, which ensures that health benefits remain secondary to retirement benefits, sits within this integrated valuation. This approach is more streamlined than performing separate valuations and tests, reducing complexity and potential for errors. The actuary’s role is central to projecting future liabilities, determining contribution levels, and ensuring the plan remains financially sound and compliant with IRS regulations.

Contributions to a 401(h) sub-account are typically made by the employer, offering significant tax advantages. These contributions are generally tax-deductible for the employer, similar to contributions made to the underlying defined benefit plan. This can lead to substantial tax savings for businesses.

The funds contributed to the 401(h) account grow tax-deferred, meaning that investment earnings are not taxed until they are used to pay for medical benefits. This allows the assets to accumulate more rapidly over time. It's important to note that while the employer directly funds the 401(h) sub-account, beneficiaries receive medical benefits, not cash, making it distinct from personal savings accounts for healthcare.

A foundational requirement for 401(h) plans is adherence to the "incidental benefit" rule. This IRS regulation stipulates that the healthcare benefits provided through a 401(h) sub-account must be subordinate to the retirement benefits provided by the main defined benefit plan. Specifically, aggregate employer contributions for medical benefits cannot exceed 25% of the aggregate contributions for all pension benefits under the plan (excluding past service costs).

This rule ensures that the primary purpose of the combined plan remains retirement security, with healthcare benefits serving an important, but secondary, role. Compliance with this rule is continually monitored through actuarial valuations and is a critical factor in maintaining the plan's qualified status and associated tax advantages.

Operating a defined benefit plan with a 401(h) sub-account involves navigating a complex landscape of compliance requirements under ERISA (Employee Retirement Income Security Act) and IRS regulations. Plan sponsors bear significant fiduciary responsibilities, including acting in the best interests of plan participants and ensuring proper plan administration.

This includes adhering to strict reporting and disclosure requirements, maintaining accurate records, and ensuring that all plan operations comply with applicable laws. Professional plan administrators, actuaries, and ERISA counsel are indispensable partners in managing these obligations, mitigating risks, and safeguarding the plan's integrity.

Effective communication is paramount for the success of any benefits plan, and a combined DB/401(h) arrangement is no exception. Participants need to clearly understand what they are entitled to and how to access their medical and retirement benefits. This clarity is provided through readily accessible documents such as Summary Plan Descriptions (SPDs), which outline plan features, eligibility, and benefit details.

Additionally, clear procedures for claims submission and ongoing participant communications are vital to keep retirees informed and address any questions. Poor communication is a quiet source of avoidable disputes and can undermine the perceived value of an otherwise excellent benefit package. Proactive and transparent communication fosters trust and ensures participants can fully utilize their earned benefits.