Beneficiary Designations: The Seven Mistakes That Override Your Will

Key takeaways

A beneficiary form controls the asset regardless of what the will says, and it is often the larger share of the estate.
Naming your estate, a minor, or no one at all forces probate and can shorten the tax deferral period for heirs.
Every account needs a primary and a contingent beneficiary, reviewed after every marriage, divorce, birth, and death.
Per stirpes language keeps an inheritance in a deceased child's family instead of shifting it to siblings.

A will is what people picture when they think about estate planning. For most households, it controls less than half of what they own. Retirement accounts, life insurance, annuities, and any account with a transfer-on-death designation go straight to whoever is named on the beneficiary form, and the will doesn't get a vote. That's convenient when the forms are right and expensive when they're wrong. These are the mistakes we find most often when we audit a new client's designations.

1. No beneficiary at all

It happens more than you'd think. An old 401(k) from a job you left a decade ago, an IRA opened in a hurry, a life insurance policy that came with a job. With no named beneficiary, the account passes according to the plan's default rules, which often means the estate. The estate means probate, which in Florida means a court process, attorney fees, and months of delay. For a retirement account it also means the worst available tax treatment, because an estate isn't a "designated beneficiary" and the account may have to be emptied within five years.

The fix takes ten minutes per account.

2. Naming your estate on purpose

Some people name their estate as beneficiary because they think it keeps things simple, or lets the will control. It does the opposite. It drags an asset that could have skipped probate into probate, exposes it to the estate's creditors, and, for IRAs, throws away the ten-year stretch an individual beneficiary would have gotten. About the only time naming the estate makes sense is when an attorney has built the estate plan specifically around it.

3. Naming a minor

Children are the natural choice, and minors can't legally receive the money. If a child under 18 is named directly, a court appoints a guardian of the property, the funds are restricted until the child reaches adulthood, and then the entire balance is handed to an 18-year-old with no strings attached. Nobody loves that outcome. The better structure is a trust for the child's benefit named as beneficiary, or a custodial designation under Florida's Uniform Transfers to Minors Act, drafted with your attorney so the retirement account tax rules still work.

4. Forgetting the contingent

Every designation should have a primary and a contingent beneficiary. If the primary dies before you and there's no contingent, the account defaults, usually to the estate, with all the problems above. Couples who name each other and stop there have made this mistake. And most couples stop there. The contingent is typically the children, a trust for them, or a charity.

5. Outdated forms after a divorce, death, or remarriage

Florida law revokes a designation of a former spouse in most cases when a marriage ends, but federal law governs employer retirement plans and can override state law. Life insurance and IRAs have their own rules. So you get a patchwork where an ex-spouse may or may not inherit depending on the account type. Court cases on this point are common, and the ex-spouse wins a lot of them. Update every form after a divorce, after a spouse's death, and after remarriage, because a new spouse's rights in a 401(k) become automatic unless waived in writing.

6. "Equally to my children" without per stirpes

Say you name three children equally and one of them dies before you, leaving two children of her own. Under most default plan rules, her share gets split between the two surviving siblings, and her children receive nothing. Adding "per stirpes" (or the plan's equivalent, sometimes called "by right of representation") sends her one-third to her children instead. Two words, large consequence. Most forms leave it out unless you ask.

7. A trust that wasn't drafted for retirement accounts

Naming a trust as beneficiary of an IRA is often the right call, especially for minors, a spouse in a second marriage, a child with creditor or spending concerns, or a beneficiary on government benefits. But the trust has to be written to qualify as a "see-through" trust so the ten-year rule applies instead of the five-year rule, and so the trustee can manage distributions across that window. A lot of older trusts were written before the 2020 law change and don't do this well. If a trust is named, an attorney should confirm it still works under current rules.

The special case: spouse versus children on a large IRA

For couples with large traditional IRAs, the reflex is to name the spouse. That's usually right, since a surviving spouse can roll the account into their own IRA and defer distributions until their own required beginning date. But it also parks the entire balance with one person, who will then file as a single taxpayer in compressed brackets. Some families do better naming the spouse for part and the children or a trust for the rest, or using disclaimers so the survivor can decide after the fact. This is a conversation to have with the whole estate and tax picture in view, and our estate planning work is where it tends to happen.

Charity as a beneficiary

If any part of your estate is going to charity, the traditional IRA is the asset to give. A charity pays no income tax, so a $500,000 IRA left to a charity delivers the full $500,000, while the same IRA left to children is worth perhaps $350,000 after their taxes. The taxable account or the Roth, which children inherit with a step-up in basis or tax-free, is the better asset for family. Matching the asset to the recipient is one of the highest-value estate decisions there is, and it happens entirely on beneficiary forms.

The audit

We review every client's designations at onboarding and again whenever something changes in the family. The audit is one table: every account, its owner, the primary beneficiary, the contingent, the percentages, whether per stirpes applies, and the date the form was last confirmed with the custodian. Accounts that pass by beneficiary form include IRAs, 401(k)s, 403(b)s, pensions, life insurance, annuities, HSAs, 529 plans (successor owner), and any bank or brokerage account with a payable-on-death or transfer-on-death registration.

Then we lay the table next to the will and the trust. When they point in different directions, the form wins, and the estate plan isn't what anyone thinks it is. Fixing that is often the most valuable hour in the whole plan.

Frequently asked questions

Does a will ever control a retirement account?

Only if the account has no valid beneficiary or the estate is named. Otherwise the beneficiary form controls, and a will that says something different is ignored for that asset.

How often should I check my designations?

At every major life event and at least every few years. Custodians change systems, plans merge, forms get lost. Confirm the designation on file with the custodian, not just the copy in your own records.

Can I name a beneficiary on a regular brokerage account?

Yes. A transfer-on-death registration passes the account outside probate. It doesn't give you the protections of a trust, though, and it can conflict with an estate plan that meant for the account to fund a trust. Coordinate it with your attorney.

What about my 401(k) if I'm married?

Federal law gives your spouse the right to the account unless they sign a notarized waiver. If you want to name anyone else, including a trust for the spouse's benefit, the waiver has to be on file.

Joseph G. Valerio, CFP®, EAFounder and Lead Advisor at Valerio Wealth Management, a fee-only, fiduciary virtual family office in Miami, Florida. One advisor, credentialed in both financial planning and federal tax. About Joseph

This article is general education, not individualized advice, and it is not tax, legal, or accounting advice. Figures reflect federal law for the year stated and can change. Valerio Wealth Management does not prepare or file tax returns. Speak with a qualified professional about your own situation before acting.