A single form filed years ago with a brokerage or retirement plan administrator can override every instruction in a person’s last will and testament. When an IRA owner dies, the beneficiary designation on file with the custodian controls who receives the account, not the probate court and not the will. That distinction catches families off guard every year, especially when the named beneficiary is a former spouse the account holder forgot to remove after a divorce.
How an outdated IRA designation bypasses a will
The IRS treats individual retirement accounts as transfer-on-death instruments. Federal guidance on IRA beneficiaries distinguishes three categories at the owner’s death: surviving spouse, non-spouse designated beneficiary, and no designated beneficiary at all. The plan administrator follows whichever name appears on the most recent beneficiary form, regardless of what a will or trust says. If a divorced account holder never submitted a new form, the ex-spouse listed on the original paperwork remains the legal recipient.
This is not a technicality that courts routinely fix. In most states, probate judges lack authority to redirect IRA proceeds once the custodian has paid them out according to the designation. A handful of states have enacted “revocation upon divorce” statutes that automatically void an ex-spouse’s beneficiary status, but coverage is uneven and enforcement depends on the plan type. ERISA-governed employer plans follow federal rules that can preempt state law entirely, leaving the ex-spouse’s claim intact.
SECURE Act transition rules add tax complications
The stakes extend beyond who gets the money. How and when an inherited IRA must be distributed carries real tax consequences that differ depending on the beneficiary’s relationship to the original owner. The 2019 SECURE Act eliminated the “stretch IRA” for most non-spouse beneficiaries, requiring full distribution within ten years. That change created confusion about whether annual withdrawals were also required during the ten-year window.
The IRS responded with formal relief in recent guidance, waiving excise taxes on missed required minimum distributions for certain inherited IRA and plan beneficiaries during the transition period. The relief applies only to specific categories of beneficiaries who inherited accounts from owners who had already begun taking distributions. An ex-spouse who receives an IRA under an outdated designation may or may not qualify for that relief, depending on the original owner’s distribution status and the year of death. The result is a tangle of tax obligations that the account holder never intended to create.
Gaps in divorce decrees leave accounts exposed
Divorce attorneys routinely divide retirement assets through qualified domestic relations orders for employer plans, but IRAs do not use QDROs. Instead, the account holder must voluntarily submit a new beneficiary form to the custodian. Many divorce decrees mention the division of retirement accounts in general terms without explicitly requiring the parties to update beneficiary designations within a set period. When that step is omitted or delayed, the old form stays active indefinitely.
No federal agency publishes data on how often inherited IRAs end up with unintended ex-spouse recipients. The IRS tracks distribution categories and tax treatment but does not collect information on whether the named beneficiary matched the decedent’s final wishes. That data gap makes it difficult for policymakers to gauge how frequently beneficiary forms fail to reflect current family circumstances. Anecdotally, estate lawyers and financial planners report seeing the problem surface most often after long marriages that ended years earlier, when both parties assumed the paperwork had been handled.
Practical steps to avoid an ex-spouse windfall
Preventing an unwanted transfer usually requires a combination of legal and administrative follow-through. First, divorcing spouses can ask their attorneys to spell out in the settlement agreement who should be named on each IRA and to set a deadline for submitting updated forms. While a decree cannot force a custodian to ignore an existing designation, it can create a contractual obligation that supports later enforcement between the parties.
Second, account owners should build beneficiary reviews into major life events. Marriage, divorce, the birth or adoption of a child, and the death of an existing beneficiary are all triggers to request fresh forms from every financial institution. Most custodians now allow electronic updates, but some still require original signatures or notarization; until the new form is accepted, the old designation remains controlling.
Third, coordinated estate planning helps avoid conflicts between beneficiary forms and other documents. A will can address non-retirement assets and name contingent heirs if a primary IRA beneficiary dies first, but it cannot override the designation on file. Some individuals choose to name a revocable trust as the IRA beneficiary to centralize control, though that approach raises its own tax and administrative considerations that should be reviewed with counsel.
Finally, clear communication with family members reduces the surprise factor. Letting adult children or new spouses know who is listed on key accounts can prompt questions if an outdated name lingers. The conversation may be uncomfortable, but it is easier than litigating after the fact when an ex-spouse legally inherits an IRA the original owner assumed would pass elsewhere.
For now, the law continues to treat the beneficiary form as the last word for IRA transfers at death. Without deliberate updates, a single forgotten signature can override years of careful estate planning and send retirement savings to someone the owner no longer intended to benefit.
