DOL Proposes Safe Harbor Rule to Open 401(k)s to Crypto and Alternative Investments
The US Department of Labor published a long-awaited proposed rule on March 30, 2026, designed to make it significantly easier for employers to include alternative assets — such as private equity, private credit, cryptocurrency, and real estate — in 401(k) retirement plans. If finalized, the rule could reshape the investment landscape for a retirement market worth nearly $14 trillion.
The Policy Path: From Executive Order to Proposed Regulation
The proposal follows President Trump's executive order signed on August 7, 2025, titled "Democratizing Access to Alternative Assets for 401(k) Investors." The order directed the Department of Labor to reexamine fiduciary guidance under the Employee Retirement Income Security Act of 1974 (ERISA) within 180 days and coordinate with the SEC and Treasury Department on expanding retirement plan investment options. An earlier step had already been taken: on May 28, 2025, the DOL rescinded a 2022 Biden-era compliance release that had urged fiduciaries to exercise "extreme care" before adding cryptocurrency to plan menus, signaling a clear regulatory pivot toward greater openness.
How the Safe Harbor Would Work
The core of the proposed rule is a legal safe harbor mechanism. Fiduciaries who thoroughly evaluate six non-exhaustive factors before including alternative assets — performance, fees, liquidity, valuation methodology, due diligence process, and disclosure quality — would be deemed to have satisfied their duty of prudence under ERISA. This would provide meaningful protection against participant lawsuits challenging those investment decisions.
Critically, the rule does not allow participants to hold bitcoin or standalone private equity funds directly. Crypto exposure must come through actively managed investment vehicles such as target-date funds, not as standalone menu options. Erin Cho, a partner at Mayer Brown, noted that the proposal does not fundamentally change how alternatives can be included, and participants would only obtain limited exposure through specific fund structures.
Why Employers Have Stayed on the Sidelines
Although ERISA has never explicitly prohibited 401(k) plans from holding alternative assets, fear of participant class-action lawsuits has kept the vast majority of plan sponsors cautious. DOL officials acknowledged this directly on a press call, noting that litigation risk — not legal prohibition — has been the primary barrier. The safe harbor framework aims to draw a clearer compliance boundary, reducing that risk for employers willing to proceed. As digital asset allocations grow within retirement portfolios, tools like Trustformer KYT are helping institutions meet the transaction monitoring and compliance demands that accompany more complex asset mixes.
Industry Leaders Are Already Moving
Major asset managers had already begun positioning ahead of the rule. BlackRock announced it would launch a 401(k) target-date fund in the first half of 2026 with a 5% to 20% allocation to private investments. Empower, the country's second-largest retirement plan provider, also announced a partnership with Apollo to begin allowing private assets in select accounts. The proposal, if finalized, would provide the legal scaffolding these products need for broader adoption.
Outlook and Remaining Uncertainty
TD Cowen analyst Jaret Seiberg cautioned that fiduciaries may remain hesitant until courts have affirmed that the safe harbor language provides effective protection against litigation — a process that could take several years. The proposed rule will now enter a 60-day public comment period before revisions and a final version are considered. As the regulatory framework takes shape, robust compliance infrastructure — including solutions like Trustformer KYT for real-time digital asset monitoring — will be central to how institutions responsibly integrate alternative assets into retirement offerings.