A will does not override a beneficiary designation in almost any situation. When your life insurance policy, 401(k), IRA, or payable-on-death account names one person and your will names another, the beneficiary designation controls. That form is a contract between you and the financial institution, and the money passes directly to whoever is listed on it. Your will only reaches assets that go through probate, and assets with a valid beneficiary designation skip probate entirely.
The exceptions are narrow. They exist, and they matter when they apply, but the default rule holds: the designation wins.
Why the Designation Wins
The logic is contract law. When you open a retirement account or buy a life insurance policy, you sign an agreement with the plan administrator or insurer promising to pay a named beneficiary at your death. Courts enforce that promise. The institution pays the person on the form, and the money never enters your estate.
That means your will has nothing to govern. A will only controls property that passes through probate, and the following accounts don’t:
- Life insurance proceeds go to whoever is named on the policy.
- Employer retirement plans (401(k), 403(b), pensions) follow the beneficiary form on file with the plan administrator.
- Traditional and Roth IRAs pass to the designated beneficiary.
- Payable-on-death bank accounts release funds directly to the named person.
- Transfer-on-death brokerage accounts move investments the same way.
The U.S. Supreme Court reinforced this hierarchy in Egelhoff v. Egelhoff, holding that federal law governing employee benefit plans preempted a state statute that would have automatically revoked a beneficiary designation after divorce. When federal rules protect the designation, even a state law meant to align accounts with a person’s likely wishes cannot override the contract.1Cornell Law Institute. Egelhoff v. Egelhoff (99-1529)
When a Will Can End Up Controlling
A will can reach these assets only when the designation itself fails or gets set aside. Four situations do it.
The Designation Is Invalid or Missing
If the form was never properly completed, is missing a required signature, or doesn’t meet the institution’s requirements, the designation may be treated as though it doesn’t exist. The institution typically pays the proceeds to the estate, and the will governs distribution from there. The same result follows when the named beneficiary has already died and no contingent beneficiary was listed.
Fraud, Coercion, or Undue Influence
Courts can invalidate a designation if someone proves it was the product of fraud, coercion, or undue influence. If an account holder was pressured or deceived into naming a particular person, a court can throw the designation out. The assets then pass through the estate, where the will takes over. These cases are hard to win because the standard of proof is high, but they succeed when the evidence is strong.
The Slayer Rule
Every state has some version of the slayer rule, which bars a person who intentionally and unlawfully killed the account holder from collecting as a beneficiary. The killer is treated as though they predeceased the victim. If a contingent beneficiary exists, that person inherits. If not, the assets flow into the estate and the will controls.
A Beneficiary Dies and No Backup Was Named
This is where plans quietly break. If your primary beneficiary dies before you and you never update the form, the outcome depends on how the designation was worded. A contingent beneficiary inherits directly. A “per stirpes” designation passes the deceased beneficiary’s share down to their descendants. But if neither applies, the proceeds default to your estate, your will takes over, and the assets now go through probate with all the delay, cost, and public exposure that involves.
Spousal Rights Can Override Both Documents
Federal law creates a major carve-out for married people with employer-sponsored retirement plans. If you have a 401(k), pension, or other plan governed by the Employee Retirement Income Security Act, your surviving spouse is automatically entitled to the benefits at your death. You can name someone else, but only if your spouse signs a written waiver witnessed by a plan representative or notary.2Office of the Law Revision Counsel. 29 USC 1055 – Requirement of Joint and Survivor Annuity and Preretirement Survivor Annuity
Without that signed waiver, the form and the will are both irrelevant. Your spouse receives the account. This catches people in second marriages who intended to leave a 401(k) to children from a prior relationship and never got the new spouse’s consent on file.
IRAs fall outside ERISA, so there is no federal spousal consent requirement. You can technically name anyone as your IRA beneficiary without your spouse’s permission. In community property states, however, a surviving spouse may have a legal claim to half the IRA’s value if marital funds were used to make contributions. Courts have generally upheld that claim, which means even an IRA designation can be partially overridden in those states.
Joint Accounts Also Bypass the Will
Joint bank accounts with rights of survivorship skip both probate and your will. When one holder dies, the survivor automatically owns the full balance. Most joint accounts are set up this way by default.3Consumer Financial Protection Bureau. What Happens if I Have a Joint Bank Account With Someone Who Died?
Disputes arise when a family believes the joint account was created for convenience rather than as a gift. A common scenario: an aging parent adds an adult child to an account so the child can pay bills, with no intention of giving the child the whole balance at death. If the parent’s will leaves that money to all the children equally, the will and the account structure conflict. Courts look at who contributed the funds, what the parent said about their intentions, and any written agreements. The will can sometimes override survivorship rights when the evidence strongly supports a convenience-only arrangement, but these cases are unpredictable and expensive to litigate. A power of attorney for bill-paying access keeps the money in the parent’s estate and under the will’s control without creating the conflict.
Naming Your Estate as Beneficiary Is Usually a Mistake
Some people try to solve the will-versus-designation problem by naming their estate as the beneficiary of a life insurance policy or retirement account. It works, in the sense that the will then controls the money. But it creates three problems.
The assets now go through probate, which means delays, court costs, and a public record of what you owned and who received it. Beneficiary designations exist to avoid exactly that.
For retirement accounts, naming the estate triggers unfavorable tax treatment. A designated individual can spread withdrawals over up to ten years under current rules. When the estate is the beneficiary, the same clock runs, but distributions flow through the estate and may need to be passed to heirs through probate.
Estate creditors can also reach assets that pass through the estate. Life insurance proceeds paid directly to a named beneficiary are generally free of the deceased’s creditors in most states. Routing the money through the estate eliminates that protection.
Keeping Your Designations Current
Because the designation almost always controls, the practical takeaway is that these forms need active maintenance. A will is often reviewed every few years by an attorney. A 401(k) beneficiary form usually gets filled out at hire and never looked at again.
Certain life events should trigger a review of every designation you have on file:
- Marriage. Your new spouse has automatic rights to employer retirement plans, and you likely want them on other accounts too.
- Divorce. Some states automatically revoke an ex-spouse’s designation on certain accounts, but federal plans like 401(k)s may not follow state revocation rules after Egelhoff. File a new form rather than relying on automatic revocation.1Cornell Law Institute. Egelhoff v. Egelhoff (99-1529)
- Birth or adoption of a child. You may want to add the child as a contingent beneficiary or route the inheritance through a trust.
- Death of a beneficiary. Update the form immediately to avoid the lapse-to-estate problem.
- Job change. Old employer plans get forgotten. Roll the account to an IRA or update the designation on the old plan.
For employer retirement plans, contact your plan administrator or HR department for a new form. If your spouse needs to sign a waiver, the administrator will provide the required consent form.4U.S. Department of Labor. FAQs About Retirement Plans and ERISA For life insurance and IRAs, contact the insurer or financial institution directly. Many allow changes online, but a signed paper form remains the most reliable way to get the designation on file. Keep copies of every form you submit. When disputes arise years later, the family that can produce a signed copy is in a far stronger position than the one relying on institutional records alone.5U.S. Office of Personnel Management. Designating a Beneficiary
Even a perfectly updated will won’t override a designation you forgot to change. The two documents work in parallel, and on the accounts they both touch, the designation almost always wins.