Estate Planning After Divorce in Illinois: Wills, Trusts, and the ERISA Trap

Illinois law provides automatic protections that revoke certain provisions favoring your ex-spouse after divorce. But relying on these defaults is risky — and for employer-sponsored retirement plans, they don't apply at all. Understanding which designations are automatically revoked and which ones you must manually update could mean the difference between your assets going to the people you choose and your ex-spouse receiving everything.

What Illinois Law Automatically Revokes

Wills

Under 755 ILCS 5/4-7(b) of the Illinois Probate Act, a final divorce decree automatically revokes any provision in a pre-divorce will that benefits or names your ex-spouse as a fiduciary (executor, trustee). The law treats your former spouse as if they predeceased you.

Revocable Trusts

Section 602(b) of the Illinois Trust Code (760 ILCS 3/602(b)) revokes every revocable provision pertaining to a former spouse in a trust executed before the divorce.

State-Regulated Life Insurance

Under 750 ILCS 5/503(b-5)(2), any pre-divorce designation of a spouse as beneficiary on a life insurance policy is automatically revoked upon final dissolution. The exception: if the divorce decree specifically requires the policy to be maintained for the former spouse or children.

Powers of Attorney

Pre-divorce durable powers of attorney naming your ex for healthcare or financial decisions are also revoked upon dissolution.

The ERISA Preemption Trap — The Dangerous Exception

Here's where automatic revocation fails completely. Employer-sponsored retirement plans governed by federal ERISA law — 401(k)s, 403(b)s, and group life insurance — are not subject to Illinois automatic-revocation statutes.

Under the U.S. Supreme Court's ruling in Egelhoff v. Egelhoff, federal ERISA law explicitly preempts all state-level automatic revocation. This means:

• If you die post-divorce without manually updating your beneficiary designation forms with the plan administrator, the administrator is legally required to pay your ex-spouse
• Your divorce decree doesn't matter
• Waiver language in your Marital Settlement Agreement is often insufficient to override the plan documents
• Your ex-spouse wins even if your new will names different beneficiaries

This is not theoretical. It's litigated regularly, and the ex-spouse wins every time when the beneficiary form still lists them.

What You Must Manually Update

401(k) and 403(b) Beneficiary Forms

Contact your HR department or plan administrator directly. Request current beneficiary designation forms. Complete new forms naming your intended beneficiaries. Confirm in writing that the old designation has been replaced.

Group Life Insurance Through Your Employer

Same process — contact HR, request new beneficiary forms, submit and confirm. Group life insurance provided through employment is an ERISA-governed plan, so state automatic revocation does not apply.

Individual Retirement Accounts (IRAs)

While IRAs aren't ERISA-governed, they follow their own custodial rules. Contact your IRA custodian (Fidelity, Schwab, Vanguard, etc.) and update the beneficiary designation. If IRA assets were divided in the divorce, the transfer must be executed as a direct trustee-to-trustee transfer under IRC Section 408(d)(6) — never as a withdrawal and personal check, which triggers immediate income tax plus a 10% early withdrawal penalty if you're under 59½.

Annuities, Brokerage Accounts, and Payable-on-Death Designations

Any account with a transfer-on-death (TOD) or payable-on-death (POD) designation needs manual updating. These are contract-based designations that typically override whatever your will says.

New Estate Documents You Need

Rather than relying on automatic revocation defaults, execute entirely new estate planning documents:

New will. Draft a new will naming your intended beneficiaries, successor executor, and guardians for minor children. Automatic revocation creates gaps — if your pre-divorce will left everything to your ex, revocation means your assets fall into intestacy (state default distribution), which may not match your wishes at all.

New or restated trust. If you had a revocable living trust, execute a comprehensive amendment or full restatement. Name new successor trustees and update the distribution plan.

New powers of attorney. Execute new Illinois Statutory Power of Attorney documents for both healthcare and property. Name agents you trust for medical decisions and financial management if you become incapacitated. Don't leave the old ones as the only documents on file.

HIPAA authorization. If you had HIPAA releases naming your ex-spouse, revoke them and execute new ones authorizing your chosen contacts to access your medical information.

The Complete Beneficiary Audit

Go through every account and policy you own:

• Employer 401(k) / 403(b) — ERISA, must update manually
• Group life insurance through employer — ERISA, must update manually
• Individual IRAs (traditional, Roth) — update with custodian
• Personal life insurance policies — check if Illinois auto-revocation applies or if decree requires maintenance
• Annuities — contract-based, update directly
• Bank accounts with POD designations — update at the bank
• Brokerage accounts with TOD designations — update with the firm
• HSA or FSA beneficiary designations — update with plan

The Illinois After-Divorce Checklist includes a beneficiary audit worksheet that walks through every account type, tracks which ones are ERISA-governed (requiring manual update) vs. state-regulated (auto-revoked), and confirms each update is completed.

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