DOL's 401(k) Crypto Rule: The Fiduciary Fine Print Behind the Trillion-Dollar Headline

The Trillion-Dollar Headline Hides a Fiduciary Rewrite

The Labor Department has proposed a rule that could open the largest pool of retirement savings in the world to digital assets. On March 31, 2026, the Employee Benefits Security Administration published its proposed rule in the Federal Register, following President Trump's Executive Order 14330, signed August 7, 2025, which directed regulators to expand access to alternative assets in retirement portfolios. CoinDesk framed the story around the trillions in 401(k) funds that could flow toward crypto.

But here is the part the headlines are missing. The proposed rule is titled 'Fiduciary Duties in Selecting Designated Investment Alternatives.' It never mentions crypto by name. This is not a crypto rule dressed as an ERISA rule. It is an ERISA fiduciary rule that happens to make crypto easier to offer.

That distinction matters enormously for the plan sponsors, recordkeepers, and advisers who will actually carry the liability. Here is what happened, why it matters for fiduciaries, and what to do before the June 1, 2026 comment deadline.

How the DOL Cleared the Path: From 'Extreme Care' to a Neutral Standard

The regulatory groundwork was laid nearly a year before this proposed rule appeared.

On May 28, 2025, EBSA issued Compliance Assistance Release No. 2025-01, formally rescinding Release No. 2022-01. The 2022 guidance had directed plan fiduciaries to exercise 'extreme care' before adding cryptocurrency to 401(k) investment menus. That single phrase had a chilling effect across the recordkeeping industry, and its removal reset the baseline.

What the proposed rule actually does

The proposed rule does not command any fiduciary to add digital assets. It clarifies the standard a fiduciary must apply when selecting a designated investment alternative — the menu options a participant can choose from. According to EBSA's release, the rule increases potential retirement investment options for more than 90 million Americans, across private plans holding about $13.8 trillion in assets.

The scale is real. According to the Investment Company Institute, Americans held $10.1 trillion in 401(k) plans as of December 31, 2025. A modest reallocation across that base is a large number in absolute dollars.

But a neutral standard is not a safe harbor. Removing 'extreme care' does not remove the duty of prudence. It relocates the entire analysis back onto the plan sponsor.

The Fiduciary Duty Problem the Rule Does Not Solve

Here is the distinction every plan sponsor must internalize. A permission to offer is not a defense to a claim.

ERISA imposes a duty of prudence that is judged by process, not by outcome. A fiduciary who adds a volatile digital asset to a menu and then watches it lose half its value has not automatically breached anything — but that fiduciary will have to prove the selection process was rigorous, documented, and benchmarked. The proposed rule lowers the regulatory friction. It does nothing to lower the litigation risk.

Why Anderson v. Intel changes the calculus

On January 16, 2026, the Supreme Court granted certiorari in Anderson v. Intel Corp. Investment Policy Committee (No. 25-498). The question presented is whether ERISA plaintiffs alleging imprudent investment decisions based on fund underperformance must plead a 'meaningful benchmark.' The case is set for argument in the October 2026 term.

That pairing is the story. The DOL is expanding the menu of assets a fiduciary may offer at the same moment the Supreme Court is deciding how easy it will be to sue when those assets underperform.

• If the Court requires a meaningful benchmark, the pleading bar rises and fiduciaries gain some protection.
• If it does not, plan sponsors adding crypto face a lower barrier to imprudence suits precisely when volatility is highest.

A fiduciary reading only the crypto headline sees opportunity. A fiduciary reading the docket sees exposure.

What Plan Sponsors and Advisers Should Do Before June 1

The 60-day comment period closes June 1, 2026, and as of late May 2026 the rule had already drawn nearly 37,000 public comments. That volume signals both intense interest and intense contestation. Do not treat the proposed rule as settled law.

Concrete steps

First, document your selection process now, not after you add anything. Build a written prudence file for any designated investment alternative you are considering, including liquidity analysis, fee comparison, and volatility disclosure. The file is your defense.

Second, choose your benchmark before Anderson is decided. Whatever the Supreme Court rules on 'meaningful benchmark,' a fiduciary who selected a defensible comparator at the time of the decision is in a stronger position than one who reverse-engineers a benchmark during litigation.

Third, separate the permission from the obligation. Nothing in the proposed rule requires you to add digital assets. Evaluate whether your participant population and plan governance can actually support the monitoring burden.

Fourth, submit a comment if the rule affects your plan or platform. The docket is EBSA-2026-0166-0001. Recordkeepers and sponsors who stay silent forfeit the chance to shape the final standard.

Fifth, do not assume the SEC has acted. Executive Order 14330 directed parallel review by the SEC, but as of the proposed rule's publication no parallel SEC rule had been issued. Do not build a compliance program on rules that do not yet exist.

Key Takeaways

• The rule is a fiduciary rule, not a crypto rule. The proposed 'Fiduciary Duties in Selecting Designated Investment Alternatives' never names crypto — it rewrites the standard for offering any alternative asset in an ERISA plan.
• Rescinding 'extreme care' removed friction, not liability. Compliance Assistance Release No. 2025-01 reset the baseline on May 28, 2025, but the ERISA duty of prudence still governs every menu decision.
• The scale is genuine but often overstated. Americans held $10.1 trillion specifically in 401(k) plans as of December 31, 2025 — use the ICI figure, not the inflated '$12 trillion' shorthand.
• Anderson v. Intel is the wildcard. The Supreme Court will decide in the October 2026 term whether plaintiffs must plead a meaningful benchmark, directly affecting the litigation risk of adding volatile assets.
• The comment window closes June 1, 2026. With nearly 37,000 comments already filed, sponsors and recordkeepers who want to shape the final standard must act now.