Here is a story estate lawyers hear in one form or another all the time. A guy starts his first real job at 26 and fills out the onboarding paperwork in about ten minutes. When the 401(k) form asks for a beneficiary, he writes down his girlfriend. They break up two years later. He moves on, gets married, has two kids, and eventually sits down with a lawyer to sign a will that leaves everything to his wife and children.
He dies unexpectedly at 44. His will is valid. His wife is the executor. And the 401(k), which by now is one of the largest assets he owns, goes to the ex-girlfriend he has not spoken to in fifteen years.
That is not a loophole or a mistake by the court. It is how beneficiary designations work, and it is one of the most common and painful estate planning failures out there. The fix takes about as long as filling out the original form did.
Your Will Does Not Control Everything You Own
Most people assume their will is the master document that decides where everything goes. In reality, a large share of what many people own passes outside the will entirely, directly to whoever is named on a beneficiary form or account registration. These are called nonprobate assets, and they commonly include:
| Asset | What decides who gets it |
|---|---|
| 401(k), 403(b) and other workplace retirement plans | The beneficiary form on file with the plan |
| IRAs and Roth IRAs | The beneficiary form on file with the custodian |
| Life insurance, including policies through work | The beneficiary designation with the insurer |
| Bank accounts marked payable on death (POD) | The named POD beneficiary |
| Brokerage accounts marked transfer on death (TOD) | The named TOD beneficiary |
| Annuities and health savings accounts | The beneficiary designation |
| Property owned jointly with right of survivorship | The surviving co-owner |
For a lot of working men, retirement accounts and life insurance are worth far more than everything the will actually controls. That means the forms you filled out years ago, sometimes in a hurry during a job onboarding, may matter more than the will you paid a lawyer to draft.
Doesn’t Divorce Fix This Automatically?
Sometimes, but not always, and the exceptions are where people get burned.
Many states have revocation-on-divorce laws that automatically treat a former spouse as if they had died before you for certain assets once a divorce is final. Those laws have real limits:
- They usually apply only to spouses. An ex-girlfriend, ex-fiancée or former partner you were never married to is generally not affected. If she is on the form, she stays on the form.
- They often do not reach workplace plans. Employer retirement plans and many group life insurance policies are governed by a federal law called ERISA. In Egelhoff v. Egelhoff (2001), the U.S. Supreme Court held that ERISA overrides a state revocation-on-divorce law for those plans, and in Kennedy v. Plan Administrator for DuPont (2009), it held that a plan administrator can pay the beneficiary named in the plan documents even when a divorce decree suggests the ex-spouse gave up those rights.
- They vary from state to state. Some states have these laws and some do not, and their scope differs.
In other words, if your ex-wife is still the named beneficiary on your 401(k) through work, a divorce decree alone may not stop her from receiving it.
Other Ways Beneficiary Forms Go Wrong
Naming minor children directly
It feels natural to list your kids as beneficiaries. But insurance companies generally will not pay large sums directly to a minor. Instead, a court may need to appoint someone to manage the money until the child reaches adulthood, at which point the child may receive the entire amount outright. Naming a trust or a custodian for the children usually works far better.
Leaving the form blank or naming “my estate”
When there is no valid beneficiary, or the beneficiary has died and no backup is named, the account typically pays to your estate. That drags an asset that could have passed directly into probate, with the delays and costs that come with it, and it can make the money available to creditors of the estate.
No contingent beneficiary
If your only named beneficiary dies before you, or at the same time in an accident, the form may effectively be blank. Always name a backup.
Forgetting the old accounts
The 401(k) from two jobs ago that you never rolled over still has a beneficiary form attached to it, and it is probably the oldest one you have. The same is true of an old life insurance policy you forgot you were still paying for.
A Note for Married Men
Federal law gives spouses significant rights in most 401(k) plans. Generally, your spouse is automatically entitled to the account unless they consent in writing, with a notary or plan representative as witness, to your naming someone else. IRAs do not carry that same federal requirement, but in community property states a spouse may still have a claim to retirement savings built up during the marriage. If you want to name someone other than your spouse, get advice first.
A Nevada Example
Nevada shows how these rules play out at the state level. Nevada is a community property state, and its revocation-on-divorce statute, NRS 111.781, automatically revokes a former spouse’s designation on many nonprobate transfers once a divorce is final, such as payable-on-death accounts, individual life insurance and IRAs. Separate statutes do the same for provisions in a will and in a revocable trust. But because of ERISA, those Nevada laws generally do not override the beneficiary form on an employer-sponsored 401(k).
So a Las Vegas family can find that the house and the bank accounts passed as expected while the 401(k) went to an ex, or that a policy with no surviving beneficiary is now stuck in the estate. When that happens, or when the family simply is not sure which assets pass by form and which have to go through the court, it is worth talking with a probate attorney in Las Vegas before anyone signs claim paperwork or accepts a payout. Similar issues arise in every state, and the specific rules where you live are what matter.
The 20-Minute Fix
Most of this can be avoided with a short annual review. Log in to each account or call the provider and confirm who is named.
| Account | What to check |
|---|---|
| Current 401(k) or workplace plan | Primary and contingent beneficiaries are current |
| Old 401(k)s from past jobs | Beneficiaries are current, or roll the account over and set new ones |
| IRAs | Primary and contingent beneficiaries are named |
| Life insurance through work | Beneficiary is current; coverage usually ends when you leave the job |
| Individual life insurance | Beneficiary is current; consider naming a trust for minor children |
| Bank and brokerage accounts | POD and TOD designations match your plan |
Review your designations after any major life change: marriage, divorce, a new relationship ending, the birth of a child, a job change or a rollover. And make sure your beneficiary forms and your will point in the same direction. A will can be perfectly written and still be undone by a form you forgot you signed.
This article is general information and is not legal advice. Beneficiary, divorce and probate rules vary by state and by plan. Consult an attorney licensed in your state about your specific situation.
