Why Your Beneficiary Form Beats Your Will Every Time

Does a Beneficiary Designation Override a Will?

Yes. A validly named beneficiary designation overrides your will for that specific asset because the designation is a binding contract between you and the financial institution, and it passes entirely outside probate. Your will only governs assets in your probate estate, which is a shrinking slice of most couples' total net worth.

The numbers make the gap hard to ignore. As of 2025, more than $49.1 trillion was held in U.S. retirement accounts like IRAs, 401(k)s, and annuities. Not a single dollar of that money will ever pass through a will. Life insurance death benefits, payable-on-death (POD) bank accounts, and transfer-on-death (TOD) brokerage accounts work the same way: the form on file dictates the outcome, regardless of what your will says.

The American Bar Association estimates that more than 60% of U.S. household wealth now moves through beneficiary-designated or jointly titled assets. And the transfer wave is just getting started. An estimated $124 trillion in American wealth is set to change hands by 2048, with $105 trillion going to heirs and $18 trillion to charity.

For couples, this is actually good news once you understand it. A beneficiary designation, when intentionally set, is one of the fastest and simplest ways to transfer wealth to your partner or children without the cost, delay, or public nature of probate. The key word is "intentionally." When you and your partner coordinate your designations with your will, your estate planning becomes a coherent, unified plan rather than two documents that might contradict each other.

Which Assets Pass by Beneficiary Form Instead of Your Will

Most of your largest financial accounts bypass your will entirely and transfer by beneficiary designation or account title. Your will only controls what's left over: assets owned solely in your name without a designation or joint owner.

Here's the breakdown:

One area that catches couples off guard is joint tenancy with right of survivorship (JTWROS). When one joint tenant dies, the asset transfers automatically to the surviving joint tenant by operation of law. It doesn't matter what the will says. This can work beautifully for married couples who want a seamless transfer. But in blended families, if a parent adds only one adult child to a savings account to "avoid probate," that child legally inherits the entire balance, potentially sparking disputes with siblings who expected equal shares.

The takeaway: your will is important, but it's one piece of a larger puzzle. Every account with a beneficiary form or a joint owner is already spoken for, regardless of what your will provides.

401(k) Spousal Consent and How ERISA Treats Married Couples

Under ERISA (the Employee Retirement Income Security Act of 1974), your surviving spouse is automatically entitled to your employer-sponsored retirement plan. If you have a 401(k), 403(b), or pension, you cannot name someone other than your spouse as the primary beneficiary unless your spouse signs a written waiver that is witnessed by a plan representative or notary.

The waiver requirements are strict for a reason. Congress decided that a spouse shouldn't lose retirement income simply because their partner filled out a form. A valid spousal waiver must:

• Specifically acknowledge the effect of giving up the benefit
• Name the alternate beneficiary who will receive the account
• Be witnessed by a plan representative or a notary public
• Be signed voluntarily (a vague or unsigned waiver won't hold up)

IRAs work differently. Traditional and Roth IRAs are not governed by ERISA, so there's no federal spousal consent requirement. You can technically name anyone as your IRA beneficiary without your spouse's permission. However, in the nine community property states (Arizona, California, Idaho, Louisiana, Nevada, New Mexico, Texas, Washington, and Wisconsin), a surviving spouse may have a legal claim to a portion of IRA assets if marital funds were used for contributions. Courts have generally upheld these claims under state law.

For blended families and remarried couples, this is where a coordinated team of an estate attorney, CFP, and CPA becomes especially valuable. If you want to split assets between a current spouse and children from a prior relationship, the percentages need to be set deliberately across every account. A common approach is to name the spouse as primary beneficiary on certain accounts while directing other accounts into a trust for the children. This kind of planning isn't something a single form can accomplish. It requires someone looking at the full picture.

Neptune pairs couples with attorneys, CFPs, and CPAs who coordinate across beneficiary designations, trusts, and tax strategy so that intention matches outcome for every account.

The Stale Beneficiary Problem and the Egelhoff Ex-Spouse Trap

An outdated beneficiary form can send your entire retirement account or life insurance payout to an ex-spouse, even when your will, your divorce decree, and state law all say otherwise. Courts generally cannot fix a stale form after you die.

The landmark case is Egelhoff v. Egelhoff (2001). In that case, a man divorced and never updated the beneficiary designation on his employer retirement accounts. Washington State had a law that automatically revoked an ex-spouse's designation upon divorce, but the U.S. Supreme Court ruled that federal ERISA law preempted the state statute. The ex-wife received the full account. His children received nothing.

The Court reinforced this position in later decisions. In Kennedy v. Plan Administrator (2009) and Hillman v. Maretta (2013), the justices reiterated that plan documents and beneficiary designations control, not the will, not state law, and not what the deceased "obviously" intended.

Some states have enacted revocation-on-divorce statutes that apply to non-ERISA assets like life insurance or TOD accounts. But these laws vary by state, don't apply to all account types, and don't exist everywhere. Relying on a state law to clean up your beneficiary forms is a gamble most families shouldn't take.

The practical lesson is straightforward: divorce does not automatically remove an ex from ERISA plans. Designations must be updated manually. If you've recently married, divorced, or lost a beneficiary, updating your forms is one of the highest-impact steps you can take for your financial planning as a couple.

How to Keep Beneficiary Forms and Your Will Working Together

Couples should inventory every account that carries a beneficiary designation, confirm who is listed as primary and contingent beneficiary, and verify that the percentages and names align with their will and overall financial plan.

Here is a practical process:

1. Build a complete inventory. List every account with a beneficiary form: all retirement accounts (including old employer plans you may have forgotten), life insurance policies (both employer-provided and personal), bank accounts, brokerage accounts, annuities, and HSAs. For each one, note the primary beneficiary, the contingent beneficiary, and the percentage split.

2. Name contingent beneficiaries on every account. If your primary beneficiary dies before you and you haven't named a contingent, the account typically falls into your estate and goes through probate. That's the exact outcome beneficiary designations are designed to avoid. A contingent beneficiary also enables a useful tax strategy: a surviving spouse can disclaim (voluntarily waive) the asset, allowing it to pass to the contingent beneficiary, often adult children, potentially reducing estate taxes.

3. Consider per stirpes designations. A per stirpes designation means that if a beneficiary dies before you, their share passes to their descendants rather than being redistributed among the remaining beneficiaries. Most IRA custodians and plan administrators allow this, and it's a simple way to keep your plan aligned with your family structure.

4. Don't name minor children directly. Financial institutions can't pay retirement accounts or life insurance proceeds to a child under 18. If you name a minor, a court will appoint a guardian to manage the funds, adding legal costs and delays. In most cases, couples are better served by naming a trust as the beneficiary and designating a trustee who will manage distributions for the child according to the terms you set.

5. Set a review cadence. Update your beneficiary designations after every major life event:

• Marriage or divorce
• Birth or adoption of a child
• Death of a named beneficiary
• Major financial changes (inheritance, business sale, new accounts)
• Every 3 to 5 years, even if nothing has changed

The goal is to make sure your designations, your will, your trust documents (if any), and your tax strategy all tell the same story. When one document says one thing and another says something different, the beneficiary form wins for the account it covers. That's not a flaw in the system. It's a feature, but only when you've set it up intentionally.

As Michael C. Cotugno, Esq., Managing Partner of Neptune Legal, puts it: "Understanding a partner's relationship with money, their historical experiences of abundance or scarcity, their anxieties tied to financial stability, or their personal definitions of success, allows for a deeper, more empathetic understanding of them as a whole individual."

That kind of financial intimacy is what turns a stack of forms into a real plan. Neptune's coordinated team of experienced attorneys, CFPs, and CPAs works with couples to align every account, every designation, and every document so that your shared intentions are reflected everywhere they need to be. Because couples who plan together, grow together.