A 401(k) Beneficiary Form Can Outrank Your Will by 20 Years

Under federal retirement law upheld by the Supreme Court, a 401(k) plan administrator must pay the person named on the beneficiary form on file — so a divorced saver who dies with $500,000 in a plan still listing an ex-spouse from a first marriage can leave two adult children named in the will with no claim.

Here is an estate-planning failure that costs nothing to prevent and everything to ignore. A divorced parent drafts a will. It is clear, it is signed, it is witnessed, and it leaves everything to two adult children. What it does not do is reach the 401(k). That account still carries a beneficiary form completed during a first marriage and never touched again. The parent dies twenty years after the divorce with $500,000 sitting in the plan. The administrator looks at the file, sees the ex-spouse's name, and writes the check. The children named in the will have no claim to the money.

That scenario, laid out by 24/7 Wall St, is not a loophole or an administrative error. It is the system working exactly as Congress designed it and as the Supreme Court has repeatedly confirmed.

Why a will never touches a workplace retirement plan

A will governs your probate estate — the assets that pass through the court process after death. A 401(k) is not one of them. Employer-sponsored retirement plans are governed by ERISA, the Employee Retirement Income Security Act, the federal statute that sets the rules for private-sector pensions and defined-contribution plans. Under ERISA, the account passes by contract, not by testament. The contract is the beneficiary designation form you signed, possibly decades ago, possibly at a new-hire orientation you no longer remember.

ERISA also instructs the people running the plan to pay benefits "in accordance with the documents and instruments governing the plan." That phrase is the whole ballgame. It tells a plan administrator to read the file and pay the name on it. It does not tell the administrator to read a will, investigate a divorce, weigh family circumstances, or reconstruct what the participant probably intended. Administrators who start making those judgment calls expose the plan to competing claims and litigation from every direction, so they don't.

Life insurance policies, IRAs, annuities and transfer-on-death accounts all share the same basic feature: they pass by beneficiary designation rather than by will. But ERISA plans are the hardest case, because federal law actively displaces the state-law fixes that would otherwise clean up the mess.

What the Supreme Court actually decided

Two decisions have done most of the damage to the "but the will says" argument.

In Egelhoff v. Egelhoff (2001), the Court confronted a state statute of the kind many states have on the books — a law that automatically revokes an ex-spouse's status as beneficiary the moment a divorce is finalized. On paper, that is exactly the safety net a forgetful saver would want. The Court held that ERISA preempts such statutes as applied to plans it covers. The state fix simply does not operate on a 401(k). The form stands.

In Kennedy v. Plan Administrator for DuPont Savings and Investment Plan (2009), the Court went further. There the ex-spouse had waived her interest in the plan in the divorce paperwork. The participant still never changed the form. The Court ruled unanimously that the administrator was right to pay the named beneficiary anyway: the plan documents rule, and a waiver sitting outside the plan does not override what the plan file says.

Put the two together and the outcome is stark. A divorce decree does not update your beneficiary form. A state revocation statute does not update your beneficiary form. A will does not update your beneficiary form. Only you can update your beneficiary form.

The narrow exceptions, and why they rarely help

There is one instrument that does bind an ERISA plan from outside: a qualified domestic relations order, or QDRO. This is a court order, drafted to statutory specifications and accepted by the plan, that assigns a portion of retirement benefits in a divorce. A QDRO can divide an account or direct benefits to a former spouse or child. But a QDRO is something you obtain at the time of the split, through counsel, and have the plan formally approve. It is not something heirs can conjure up after a death to undo a payment already made.

The other wrinkle cuts the opposite way. For a married participant, ERISA generally treats the current spouse as the default beneficiary of a 401(k), and naming anyone else requires the spouse's written, notarized consent. That protection is why remarriage does not automatically leave a new spouse out in the cold — but it also means a saver who assumes the law will "do the right thing" in one direction should not assume it does so in every direction.

Estates can and do sue. The heirs may have a claim against the recipient under state law in some jurisdictions, or against a divorce attorney who failed to follow through. Both routes are slow, expensive, uncertain, and payable out of the very money in dispute. In the scenario above, an even split of the $500,000 between the two children would have been roughly $250,000 each on an illustrative basis — a sum large enough to fund years of litigation and small enough to be meaningfully eroded by it.

The twenty-minute fix

The remedy costs nothing and requires no lawyer. A short checklist:

• Pull every form, not just the current one. Old employers still hold old plans. A 401(k) you left behind at a job in your twenties carries whatever designation you filed then.
• Confirm receipt in writing. A change you submitted is only effective if the recordkeeper processed it. Save the confirmation and check the beneficiary line on your next statement.
• Name contingent beneficiaries. If your primary beneficiary predeceases you and no backup is listed, the account may default to your estate — which can mean probate and, for inherited retirement money, a less favorable distribution timetable.
• Treat divorce and remarriage as triggers. The day the decree is entered, update the forms. If you remarry, understand the spousal consent rules before assuming you can name children directly.
• Roll over with your eyes open. Moving a 401(k) to an IRA does not carry the old beneficiary designation with it. The new account needs its own.
• Reconcile the paperwork with the plan. If your will and your beneficiary forms tell different stories, the forms win. Make them agree.

Why this keeps happening

Beneficiary forms are filed at the moment of least attention — the first week of a job — and revisited at the moment of most distraction, which is to say never. Decades of contributions and market compounding then turn a forgotten piece of administrative paperwork into the single largest asset a household owns. Balances built through long bull runs in the S&P 500 and Nasdaq 100 have made 401(k) accounts the center of gravity in many estates, often outweighing the house.

The legal system has made its position clear and is not going to bail anyone out. The plan pays the name on the form. Go find out whose name is on yours.

Key facts

• Account balance in the scenario: $500,000 in a 401(k) at death
• Time since divorce: 20 years, with the original beneficiary form never updated
• Who gets paid: The ex-spouse named on the form; the two children named in the will have no claim
• Governing law: ERISA, which directs administrators to pay per plan documents; upheld by the Supreme Court

Frequently asked questions

Does a will override a 401(k) beneficiary form?

No. A will controls only assets that pass through probate. A 401(k) passes by contract under ERISA, the federal retirement law, which directs plan administrators to pay benefits according to the plan documents on file. That means the beneficiary designation form. If the two conflict, the form wins and the will is irrelevant to that account.

Which Supreme Court cases established this?

Egelhoff v. Egelhoff (2001) held that ERISA preempts state laws that automatically revoke an ex-spouse's beneficiary status upon divorce. Kennedy v. Plan Administrator for DuPont Savings and Investment Plan (2009) held unanimously that a plan administrator must pay the named beneficiary even when that person had waived her interest in the divorce settlement.

Does divorce automatically remove an ex-spouse as beneficiary?

Not for an ERISA-governed plan such as a 401(k). Many states have statutes that revoke an ex-spouse's designation on divorce, but the Supreme Court has ruled those statutes are preempted and do not apply to covered plans. The only reliable step is to submit a new beneficiary form to the plan yourself.

What is a QDRO and can it help?

A qualified domestic relations order is a court order, drafted to federal specifications and accepted by the plan, that assigns retirement benefits in a divorce. It is one of the few instruments that binds an ERISA plan from outside. But it must be obtained and approved at the time of the divorce — heirs cannot use one after a death to reverse a payment.

Do my children have any recourse if the ex-spouse is paid?

Possibly, but it is difficult. The estate may be able to pursue a state-law claim against the recipient in some jurisdictions, or a malpractice claim against an attorney who failed to update the paperwork. Both routes are slow and expensive, and the legal costs come out of the same money the heirs are trying to recover.

Does a rollover to an IRA carry my beneficiary designation over?

No. Moving money from a 401(k) into an IRA creates a new account with its own beneficiary designation, which must be completed separately. Savers who roll over and never fill out the new form can leave the account defaulting to their estate, pushing it into probate and potentially worsening the distribution timetable for heirs.

Sources

• Your Ex-Spouse Can Still Inherit Your 401(k) Twenty Years After the Divorce. The Beneficiary Form Overrides the Will, and the Supreme Court Said So — 24/7 Wall St

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