Update Beneficiaries After Divorce in Idaho: The ERISA Trap

Idaho law automatically revokes your ex-spouse from your will, trust, IRA, and bank POD accounts the moment your divorce is finalized. Idaho Code § 15-2-804 treats your former spouse as if they predeceased you for purposes of these "will substitute" instruments.

That sounds comprehensive. It's not.

There is a category of accounts where Idaho's automatic revocation doesn't apply — and if you die without manually updating those designations, your ex-spouse collects the full benefit, no matter what your divorce decree says.

The ERISA Preemption Problem

The federal Employee Retirement Income Security Act (ERISA) governs employer-sponsored retirement plans (401(k), 403(b), pensions) and employer-provided life insurance. Under the U.S. Supreme Court ruling in Egelhoff v. Egelhoff, ERISA preempts state laws that would automatically revoke beneficiary designations upon divorce.

In plain English: for any account governed by ERISA, the plan administrator must pay the death benefit to whoever is named on the plan's beneficiary form — period. Your divorce decree doesn't matter. Idaho's automatic revocation statute doesn't matter. The beneficiary form on file with the plan administrator is the only document that controls payment.

If you divorced in Idaho, never updated your employer 401(k) beneficiary form, and then die, your employer's plan administrator will write a check to your ex-spouse. Your current partner, your children, your estate — none of them have any legal claim to those funds.

Which Accounts Auto-Revoke and Which Don't

The pattern is clear: anything your employer provides or administers falls outside Idaho's automatic revocation. These are the accounts you must update manually, immediately after your divorce.

How to Update

Step 1: List every employer-sponsored account. Check with your HR department for a complete list: 401(k) or 403(b) plan, defined benefit pension, group life insurance, accidental death and dismemberment (AD&D) insurance, and any supplemental life insurance.

Step 2: Request beneficiary change forms. Most plans have their own forms — you can't just send a letter. Some plans offer online beneficiary updates through their portal (Fidelity, Vanguard, TIAA, etc.).

Step 3: Name your new beneficiaries. You'll need their full legal name, date of birth, Social Security number, and relationship to you. For minor children, consider naming a trust as beneficiary rather than the children directly — minors cannot receive plan distributions, so the funds would go to a court-appointed guardian.

Step 4: Confirm the update. After submitting the form, follow up with the plan administrator to confirm the change has been processed. Keep a copy of the completed form and the confirmation for your records.

The Decree Override Exception

There's one scenario where your divorce decree does control beneficiary designations on ERISA plans: if the decree specifically requires you to maintain a life insurance policy or retirement account beneficiary designation to secure child support or alimony obligations.

In that case, you're legally obligated to keep your ex-spouse as beneficiary for those specific accounts in the amounts required by the decree. Changing the designation in violation of the decree can result in a contempt of court action and a lawsuit against your estate.

Don't Stop at Beneficiaries

While you're updating designations, also revoke or replace:

• Powers of attorney — both financial and healthcare. Idaho Code § 15-2-804 revokes your ex's authority, but executing a new POA that names your chosen agent provides clarity and avoids confusion if an institution doesn't know about the automatic revocation.
• Healthcare directives/living will — if your ex was your designated healthcare proxy, execute a new directive.
• Digital account recovery contacts — remove your ex from Apple ID recovery, Google account recovery, and any other platform that lists them as a trusted contact.

The Idaho After-Divorce Checklist includes a beneficiary audit worksheet that lists every account type, tracks which require manual updates vs. auto-revocation, and provides space to record confirmation numbers for each completed change.

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