A 67-year-old woman dies after a brief illness. Her husband walks into the brokerage three weeks later to start the inheritance process. The branch employee pulls up her accounts. Two IRAs, both funded during her marriage based on her husband’s earned income through the spousal IRA rule. One has him listed as primary beneficiary. The other has no beneficiary on file. Because the IRA passed to her estate, he loses the simple spousal rollover path that direct beneficiaries get. He's now navigating estate administration, probate, and possibly attorney fees before any favorable tax treatment is even on the table. Same money. Same couple. Two completely different tax treatments because of a missing form.
Beneficiary designations on IRAs override the will. The account passes according to whoever is listed as beneficiary on the custodian’s records on the date of death, regardless of what the will says or what the deceased intended. A will only enters the picture if the IRA designates the estate as beneficiary, at which point the IRA may flow through probate and lose many of the favorable beneficiary options a direct spouse beneficiary would have had.
The mistake most often made on spousal IRAs is treating the account as part of “the household” and forgetting that the non-working spouse who owns the account is the one who has to fill out the beneficiary form. The working spouse can fund the contribution. The working spouse does not control who inherits the account. The owner does, even when she has no income on her tax return.
Default beneficiary outcomes depend on the custodian. Some name the spouse as default, others default to the estate. The safe assumption is that no beneficiary on file means the IRA goes to the estate.
If the IRA goes to the estate, several bad things happen. The surviving spouse loses the clean spousal rollover path that direct beneficiaries qualify for. Distributions generally must come out under the 5-year rule if the deceased died before the required beginning date for RMDs, or under the deceased's remaining life expectancy if death happened after the required beginning date. The funds are subject to estate creditors. Probate gets involved. Tax acceleration follows in nearly every case.
Outdated designations after divorce are the second most common mistake. A divorce decree may direct that the IRA be split, but the IRA still pays whoever is on the custodian’s form on the date of death. State revocation laws vary and don’t always apply. The form has to be updated.
Naming a trust as beneficiary requires the trust to have see-through provisions. A trust drafted without them can forfeit options individual beneficiaries would otherwise have and may force faster distribution treatment, including the 5-year rule when death occurs before the required beginning date. These designations need attorney review.
ERISA plans like 401(k)s require spousal consent to name anyone other than the spouse as primary beneficiary. IRAs do not. An IRA owner can legally name anyone as beneficiary without the spouse’s knowledge, regardless of how long the marriage has lasted, in most non-community-property states. Couples who assume “we’re married, the IRA goes to me” are sometimes surprised at the funeral.
The designated beneficiary is determined by September 30 of the year following death for RMD purposes. This is when disclaimers and other clean-up actions need to be finalized. Disclaimers must happen within 9 months of death. Both deadlines are calendar-based and not extendable.
There is no tax deadline for updating beneficiary designations while alive. Updates can happen at any time. The form takes five minutes. The consequences of not doing it can take five years to unwind.
A retired couple, both 70. The wife passes first. Her IRA, funded over decades through both her own working years and through the spousal IRA rule when she stepped back from work to raise their children, holds $480,000.
Run three scenarios.
In the first, her husband is listed as primary beneficiary on the account. He rolls it into his own IRA, no taxable event. The funds continue to grow tax-deferred. RMDs follow his own age and timeline.
In the second, no beneficiary is on file. The IRA defaults to her estate. He cannot do a clean spousal rollover. The estate-beneficiary rules generally force the IRA to be emptied by the end of the fifth year after death, accelerating taxable income into a much shorter window than a spousal rollover would have allowed. He inherits what's left after taxes and any estate administration costs.
In the third, her ex-husband from a marriage thirty years ago is still listed as primary beneficiary. She forgot to update the form after the divorce. Her ex may still inherit the IRA depending on state law and the custodian's contract. Even where state revocation-on-divorce statutes apply, the cleanup is slow and expensive. The will leaving everything to her current husband doesn't override what was on the form.
Same money, same couple, three different futures based entirely on what was on a form somewhere.
The fix takes minutes. Log into the custodian’s website, locate the beneficiary section for each IRA, name primary and contingent beneficiaries, save. Repeat for every retirement account. Update after every major life event.
What matters most is that the form gets updated. The will doesn’t help. The intent doesn’t help. The marriage license doesn’t help. Only the form helps.
In most cases, the custodian pays whoever is on the form on the date of death. Everything else is a fight.
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Disclaimer This article is for educational and informational purposes only. It is not tax, legal, or financial advice and does not create an advisor–client relationship. Always consult appropriate professionals regarding your specific situation.