How to Update Beneficiaries After Divorce in New Mexico

Your ex-spouse is still the beneficiary on your life insurance, 401k, and retirement accounts — unless you manually change it. Divorce does not automatically update these designations, and in some cases, state law cannot override them even if your will says otherwise.

What New Mexico Law Does (and Does Not) Do

Under the New Mexico Uniform Probate Code (NMSA 1978 Chapter 45), a divorce automatically revokes certain provisions that benefit your ex-spouse:

• Bequests and property transfers to your ex in your will
• Appointments of your ex as executor, personal representative, or trustee
• Revocable trust provisions benefiting your ex

New Mexico law also terminates your ex-spouse's authority under a durable power of attorney (NMSA 1978 § 45-5B-301), unless the document explicitly states otherwise.

These protections cover state-governed instruments. But they do not touch the accounts where the real money often sits.

The ERISA Problem

Employer-provided life insurance, 401k plans, 403b accounts, and corporate pensions are governed by the federal Employee Retirement Income Security Act (ERISA). Federal law preempts state law — meaning New Mexico's automatic revocation rules have no effect on these accounts.

Under ERISA, benefits are paid to whoever is listed on the official beneficiary designation form on file with the plan administrator. Period. It does not matter what your divorce decree says, what your will specifies, or what your ex-spouse verbally agreed to. If the form still names your ex, your ex receives the benefit.

The U.S. Supreme Court has upheld this principle repeatedly: the beneficiary designation form controls.

Accounts You Must Update Manually

Employer life insurance — Contact your HR department and submit a new beneficiary designation form. Get written confirmation that the change was processed.

401k and 403b accounts — Log into your plan administrator's portal or submit a paper change-of-beneficiary form. Some plans require notarized signatures for beneficiary changes.

IRA accounts — Contact your IRA custodian (Fidelity, Schwab, Vanguard, etc.) and submit their beneficiary change form.

State pensions (NMERB and NMPERA) — Pre-retirement beneficiary designations on New Mexico public pensions do not automatically update upon divorce. Active employees must submit new designation forms directly to the ERB or PERA. If you die before updating, your ex-spouse may legally claim your survivor benefits.

Payable-on-death (POD) bank accounts — These pass directly to the named beneficiary outside of probate. Contact your bank to update or remove POD designations.

Transfer-on-death (TOD) brokerage accounts — Same principle as POD accounts. Update the beneficiary with your brokerage firm.

Life insurance policies (individual) — Contact your insurance company and submit a new beneficiary designation form. Some policies require a waiting period before the change takes effect.

The Timing Matters

Update beneficiary designations within the first 30 days after your divorce is finalized. If something happens to you before you make the change, your ex-spouse may legally receive assets you intended for your children, parents, or a new partner.

This is especially urgent for employer life insurance and retirement accounts, where ERISA's federal preemption means your estate has no legal basis to challenge the designation — no matter how clearly your divorce decree assigns those assets elsewhere.

The New Mexico Post-Divorce Checklist includes a beneficiary audit worksheet that inventories every account with a beneficiary designation, so you can systematically update each one and track confirmation receipts.

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