401(h) Plans for Law Firms: Partners, Associates, and Plan Design

Law firms with a history of stable profits and an existing cash balance or defined benefit (DB) plan are natural candidates for considering a 401(h) plan. The primary motivation often arises when partners begin to prioritize tax-advantaged funding for their future retiree medical expenses. Instead of establishing a new, separate retirement vehicle, a 401(h) allows firms to add a medical benefits sub-account to an already existing qualified pension plan.

This integration simplifies administration and leverages an established trust structure. The key question for these firms becomes whether to layer in the medical sub-account, recognizing the significant tax benefits associated with qualifying medical expenses. Funds contributed to a 401(h) accumulate tax-free, and distributions for eligible medical expenses are also tax-free, providing a powerful incentive for long-term health cost planning.

One of the most delicate aspects of implementing a 401(h) for law firms centers on the dynamics between partners and associates. While partners are often the driving force behind considering these plans, careful attention must be paid to how benefits are structured to avoid nondiscrimination pitfalls. The concentration of benefits at the partner level, without adequate coverage or a rational basis for excluding associates, can draw scrutiny from the IRS.

Plan design must meticulously address who is in the eligible class and how the firm defines retirement for all covered employees. This includes understanding the impact on both current and future associates. A well-designed plan aims to balance the firm's desire to provide robust partner benefits with the need to meet regulatory requirements, potentially offering a broader spectrum of benefits, or establishing clear service and age requirements that apply uniformly.

The governance framework for a 401(h) plan in a partnership environment differs from that of single-owner businesses. Given the collective ownership and varied interests within a law firm, robust governance is paramount. A clear governance trail for any plan amendment, funding policy, or benefit distribution decision is not merely good practice but also crucial for documentation and compliance.

Firms must establish who holds the authority to make decisions regarding the plan, typically involving the managing partner, an executive committee, or a designated benefits committee. These individuals or groups must have their authority clearly documented in the firm's operating agreements or plan documents. This structured approach ensures transparency, accountability, and a consistent application of plan rules, minimizing potential disputes and demonstrating due diligence to regulatory bodies.

A significant advantage for law firms considering a 401(h) is its ability to integrate seamlessly with existing defined benefit (DB) or cash balance plans. The 401(h) medical benefit account is structured as a sub-account of a qualified pension plan, meaning it cannot exist independently. This integration allows firms to leverage established trust arrangements, administrative processes, and investment oversight already in place for their primary pension plan.

The integration requires careful actuarial analysis to ensure that the medical benefits portion does not exceed a statutory limit — typically 25% of the total aggregate contributions to the plan (excluding past service costs) since the 401(h) account was established. This ensures the medical account remains incidental to the primary retirement income purpose of the pension plan. Firms must work closely with actuaries and plan administrators to model contributions, benefit accruals, and projected medical expenses to maintain compliance.

Funding a 401(h) plan involves specific contribution rules and actuarial considerations. Contributions are generally made by the employer, reducing taxable income for the firm. These contributions are allocated to the separate 401(h) sub-account, where they grow tax-deferred. Unlike a health savings account (HSA), individuals typically cannot make direct contributions to a 401(h).

Actuarial certifications are essential to determine the appropriate funding levels for the medical benefits. These calculations consider factors such as participants' ages, projected medical costs, and the expected duration of benefits. The goal is to ensure the plan is adequately funded to meet future obligations while adhering to the 25% incidental benefit rule. The firm's commitment to a consistent funding policy is crucial for the long-term viability and integrity of the 401(h) benefits.

Like all qualified retirement plans, 401(h) plans are subject to stringent compliance and nondiscrimination rules. The IRS aims to prevent plans from disproportionately benefiting highly compensated employees (HCEs), which in a law firm context often means partners. While the 401(h) sub-account itself has its own nondiscrimination requirements, it also falls under the broader umbrella of the underlying defined benefit plan's testing.

Firms must perform regular nondiscrimination testing to ensure benefits are provided equitably across different employee groups. This involves complex calculations and analysis of benefit formulas, eligibility, and coverage. Failing these tests can result in adverse tax consequences for the firm and plan participants. Engaging experienced ERISA counsel and actuaries is critical to navigate these complexities and ensure ongoing compliance, particularly given the unique compensation structures within law firms.