Estate Planning After Divorce in Mississippi: The ERISA Trap You Cannot Ignore

Mississippi has a strong automatic revocation statute that protects you from most post-divorce estate planning mistakes. But it has one massive gap — employer-sponsored retirement accounts — that federal law prevents the state from fixing. If you ignore this after your divorce is final, your ex-spouse could legally inherit your 401(k).

What Mississippi's Revocation Statute Does

Under Miss. Code Ann. §§ 91-29-1 et seq. (effective July 1, 2020, via Senate Bill 2851), a final divorce decree automatically revokes every provision that benefits your former spouse in:

• Your Last Will and Testament
• Revocable trusts
• Powers of attorney
• Transfer-on-Death deeds
• State-law beneficiary designations (POD accounts, JTWROS property)

This means if you drafted a will leaving everything to your spouse and then got divorced, Mississippi law treats your ex-spouse as if they predeceased you. The assets pass to the next named beneficiary or, if none, under the residuary clause or intestacy rules.

You do not need to rush to rewrite your will the day the divorce is final — the statute provides an automatic safety net.

The ERISA Preemption Loophole

Here is where the protection fails. Federal law completely preempts Mississippi's revocation statute for retirement accounts governed by the Employee Retirement Income Security Act (ERISA). This includes:

• Employer-sponsored 401(k) plans
• 403(b) plans
• Employer group life insurance policies
• Pension plans

Under Egelhoff v. Egelhoff, 532 U.S. 141 (2001), the U.S. Supreme Court held that state-level automatic revocation laws cannot override ERISA plan documents. The plan administrator must pay the benefits to whoever is listed on the beneficiary form — period. If that form still names your ex-spouse, your ex-spouse inherits the account, regardless of your divorce decree, your new will, or even a court order in the divorce settlement.

This is not a theoretical risk. It happens routinely. A Mississippi resident divorces, assumes the revocation statute covers everything, and never calls HR to update the 401(k) beneficiary form. When they die, the ex-spouse files a claim with the plan administrator and legally receives the entire account.

Your Post-Divorce Checklist

Complete every item on this list within 30 days of your final divorce decree:

1. Update employer retirement account beneficiaries. Contact your HR department or plan administrator and file a new beneficiary designation form for every ERISA-governed account — 401(k), 403(b), pension, group life insurance. This is the single most important action on this list.

2. Update IRA and personal life insurance beneficiaries. IRAs and individual life insurance policies are not ERISA-governed, so Mississippi's revocation statute does cover them. But updating them anyway removes any ambiguity and prevents potential delays during claims processing.

3. Execute a new will. While the revocation statute treats your ex-spouse as predeceased, your existing will may not distribute assets the way you now intend. A new will lets you name a new executor, update guardianship nominations for minor children, and redirect bequests.

4. Revoke and replace your power of attorney. Your ex-spouse's authority under your old POA is automatically revoked by the statute, but the document itself still exists. Execute a new durable power of attorney naming a trusted person, using the exact durability language required by § 87-3-105.

5. Update your advance health care directive. If your ex-spouse was your designated health care proxy, execute a new directive under the statutory form in § 41-41-209.

6. Review Transfer-on-Death deeds. If you recorded a TOD deed naming your ex-spouse on any real property, the revocation statute voids that designation. But recording a new TOD deed with the correct beneficiary eliminates any title confusion for your heirs.

7. Review POD accounts and JTWROS property. Remove your ex-spouse from joint bank accounts and replace POD beneficiary designations with your current choices.

Do Not Rely on the Divorce Decree Alone

Many divorce decrees include property settlement provisions that award specific accounts or assets to each spouse. But the decree does not change beneficiary designations on its own. A decree saying "the 401(k) is awarded to Husband" does not override the beneficiary form. Your ex-spouse's name stays on the form until you physically replace it.

Get the Full Post-Divorce Kit

The Mississippi Basic Estate Planning Kit includes a beneficiary coordination worksheet and all the replacement documents you need — will, POA, advance directive, and TOD deed — built for Mississippi's strict Chancery Court standards.

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