Beneficiary Designation Review: Checklist for HNW Households

Beneficiary designations are the most frequently neglected document in a high-net-worth estate plan. At $5M–$50M scale, a stale or incorrectly structured designation doesn't just redirect a small account — it can misroute millions, trigger the maximum possible income tax exposure on an inherited IRA, or send assets to an ex-spouse named in 1998. This checklist and guide cover what to audit, how beneficiary choices affect your heirs under the 2026 rules, and the 7 mistakes that consistently surface in HNW estates.

How beneficiary designations override wills

Beneficiary designations create a contractual right to assets. The account agreement between you and the custodian governs the transfer — not the probate court, and not the will. When you die, the custodian distributes directly to the named beneficiary without reference to any other document. No probate. No delay. And no override.

The practical consequence for HNW households: a will that names a revocable trust as the residuary beneficiary of your estate provides exactly zero protection for IRA assets if the IRA beneficiary form says something different. These are two entirely separate, non-communicating legal systems. Coordination between your estate attorney, financial advisor, and IRA custodian is not optional — it's the only way to ensure your estate plan actually controls the outcome.

The 10-year rule and T.D. 10001 annual RMDs

For most non-spouse beneficiaries — including adult children and grandchildren — the SECURE Act requires that inherited IRA funds be fully distributed within 10 years of the original owner's death. Treasury Decision 10001 (finalized July 2024) added a critical wrinkle: if the deceased owner had already reached their Required Beginning Date (RBD) — April 1 of the year after reaching RMD age — non-eligible designated beneficiaries (non-EDBs) must also take annual RMDs during years 1 through 9, not just distribute in year 10.¹

RMD ages under SECURE 2.0: age 73 for those born 1951–1959; age 75 for those born 1960 and later.²

For an HNW household, this creates a serious planning problem. An adult child inheriting a $3M IRA from a parent who was past their RBD will be forced to take approximately $100,000–$200,000 in taxable income annually for 9 years, then distribute the remainder. Stacked on top of their own W-2 income, this frequently hits the 37% bracket plus IRMAA. The right beneficiary structure — including whether a trust is appropriate and what kind — can materially change the outcome for heirs. See the inherited IRA planning guide for the full 10-year projection math.

Eligible Designated Beneficiaries (EDBs) are exempt from the 10-year rule and may use their own life expectancy to stretch distributions:

• Surviving spouse of the account owner
• Minor children of the account owner (stretch applies until age of majority — then the 10-year rule takes over)
• Disabled individuals (IRC § 72(m)(7) definition)
• Chronically ill individuals
• Individuals not more than 10 years younger than the account owner

Surviving spouse beneficiary strategy

The surviving spouse has more flexibility than any other beneficiary. Two main options when inheriting an IRA:

1. Spousal rollover (treat as own IRA). The surviving spouse rolls the inherited IRA into their own IRA and becomes the owner. This delays RMDs to their own Required Beginning Date and allows them to name new beneficiaries. For most HNW surviving spouses who don't need the income immediately, this is the optimal choice — it maximizes tax deferral and lets the survivor manage conversions on their own timeline. See Roth conversion strategy for the estate planning lens on post-rollover conversions.

2. Inherited IRA election. The surviving spouse maintains the account as an inherited IRA. This preserves one key advantage: distributions before age 59½ are not subject to the 10% early withdrawal penalty. If the surviving spouse is significantly younger than the deceased owner and needs income, this flexibility may be worth preserving — then rolling over to their own IRA when they reach 59½.

The IRMAA implication: inherited IRA distributions count as MAGI. The 2-year IRMAA lookback means a $500,000 IRA distribution in 2026 increases Medicare premiums in 2028. See IRMAA planning strategies for the tier math and how to manage distribution timing around cliff thresholds.

Trusts as IRA beneficiaries: see-through rules

For HNW households with complex estates — spendthrift concerns, minor beneficiaries, blended families, or special needs planning — naming a trust as IRA beneficiary provides estate control that an outright beneficiary designation cannot. But it only works if the trust qualifies.

A see-through trust must meet four requirements under IRS regulations:³

1. The trust is valid under state law
2. The trust is irrevocable at the IRA owner's death
3. All underlying beneficiaries are identifiable individuals
4. Documentation is provided to the IRA custodian (copy of trust or trust certification)

A non-qualifying trust loses designated-beneficiary status entirely — the IRA is then subject to a 5-year distribution rule (if owner died before RBD) or distributions over the owner's remaining life expectancy (if past RBD). Either outcome is worse than the 10-year rule.

Conduit vs. accumulation trusts behave differently under the 10-year rule. A conduit trust passes all IRA distributions through to beneficiaries immediately, avoiding trust-level bracket compression. An accumulation trust retains distributions inside the trust — protecting spendthrift beneficiaries or allowing the trustee to time distributions, but subjecting retained income to the compressed trust brackets (37% rate at just $16,000 of income in 2026 per Rev. Proc. 2025-32). See the trust income tax planning guide for the full bracket compression analysis.

This trade-off — spendthrift protection vs. tax efficiency — requires coordination with your estate attorney before naming any trust on an IRA beneficiary form. The right answer depends on your heirs, your estate structure, and the size of the account.

Per stirpes vs. per capita

This is a small designation detail with very large consequences. "Per stirpes" means that if a named beneficiary predeceases you, their share passes to their descendants. "Per capita" (sometimes the default) means the surviving named beneficiaries split the deceased's share equally.

Example: You name two children, 50/50 each. One predeceases you, leaving two grandchildren. Per stirpes: the deceased child's 50% passes to your grandchildren, 25% each. Per capita: the surviving child receives the full 100%, and your grandchildren receive nothing.

For HNW households with multi-generational estate plans, per stirpes is almost always the right choice — it ensures your wealth flows in the direction your overall estate plan intends, even through unexpected deaths. Always verify what your custodian's beneficiary forms default to, and explicitly mark your election.

Beneficiary designation audit checklist

Use this checklist to audit your current beneficiary designations across account types. Progress is saved locally in your browser.

7 most expensive designation mistakes in HNW estates

1. Ex-spouse is still named as beneficiary. In most states, divorce revokes beneficiary designations on wills and revocable trusts automatically — but it does not revoke designations on IRAs, 401(k)s, or life insurance. Federal ERISA pre-empts state "revocation-on-divorce" statutes for qualified plans. If your ex-spouse is still named on a $1.5M IRA, they receive it. Period. This is the single most litigated beneficiary error in estate law.
2. Naming your estate as beneficiary. An estate is not a designated beneficiary under IRS rules — it has no life expectancy. This triggers the least favorable distribution treatment: 5-year rule if the owner died before Required Beginning Date, or distributions over the owner's remaining life expectancy (typically short) if past RBD. It also drags the IRA through probate, exposing it to creditors and court costs. Never name "my estate" on a retirement account.
3. No contingent beneficiary. If your primary beneficiary predeceases you and no contingent is named, the account falls to the estate. See mistake #2. At $5M+, this routinely happens when a couple names each other and forgets to name anyone as contingent. One car accident kills both, and the IRA enters probate.
4. Naming a minor child directly on a retirement account. A minor cannot legally own an inherited IRA. The court must appoint a guardian of the property — which means a probate proceeding, guardianship accounting, and distributions controlled by the guardian until the child reaches majority. A properly structured trust for minors handles this correctly. The minor's "EDB" stretch period only lasts until they reach majority; the 10-year clock then starts, often at a high-income decade of their life.
5. Trust named as IRA beneficiary — without qualifying as a see-through trust. A revocable living trust is not irrevocable at the grantor's death. Wait — actually it becomes irrevocable automatically when the grantor dies, so the timing question is whether it meets all four see-through requirements at that moment. The common failure: the trust includes a non-individual beneficiary (a charity, another trust, an estate), which disqualifies it. Estate attorneys must confirm trust eligibility before naming any trust on a retirement account form.
6. Per capita designation in a multi-generational estate. If you name your three adult children equally with no per stirpes election, and one predeceases you leaving two grandchildren, your grandchildren are completely excluded and their parent's share is split between your two surviving children. HNW households with living grandchildren they intend to include should always verify the per stirpes election is explicit on each account.
7. Designations not reviewed after major life events. The most common form of this: a professional who added a spouse to a Merrill Lynch IRA in 2008, rolled to Fidelity in 2014, and never set up beneficiary designations at Fidelity. A 2017 divorce means the Fidelity account has no designated beneficiary at all — so it falls to the estate. Beneficiary forms don't auto-transfer when IRAs are rolled over. Every rollover or account opening requires a fresh designation.

When to review your beneficiary designations

These events should always trigger an immediate review of all designations across all accounts — retirement, insurance, taxable, and real estate:

• Marriage, divorce, or remarriage
• Death of any named beneficiary (primary or contingent)
• Birth or adoption of a child or grandchild
• Significant inheritance or windfall that changes your estate structure
• Rolling over an old 401(k) or opening any new account
• Moving to a new state, especially a community property state (AZ, CA, ID, LA, NV, NM, TX, WA, WI)
• Creating or amending any trust that is, or should be, named as a beneficiary
• Turning age 70½ (starts QCD eligibility) or approaching RMD age (73 or 75) as a planning trigger

Even without any of the above triggers, a review every 2–3 years is good practice. Custodians change forms, plans change administrators, and your estate plan evolves — but beneficiary designations only change when you actively update them.

Sources

1. Treasury Decision 10001 — Required Minimum Distributions Final Regulations (July 2024). Finalizes annual RMD requirement during years 1–9 of the 10-year distribution period when deceased owner was past Required Beginning Date. Effective for distributions beginning 2025. Verified June 2026.
2. IRS — Required Minimum Distributions (RMDs). SECURE 2.0 § 107: RMD age 73 for those born 1951–1959; RMD age 75 for those born 1960 or later. Required Beginning Date: April 1 of the year after reaching RMD age. Verified June 2026.
3. IRS — Trusts as Beneficiaries of IRAs. Four requirements for see-through trust status: (1) valid under state law, (2) irrevocable at owner's death, (3) all underlying beneficiaries are identifiable individuals, (4) documentation provided to custodian. T.D. 10001 significantly modified documentation rules. Verified June 2026.
4. IRS Publication 590-B — Distributions from Individual Retirement Arrangements. Surviving spouse elections, eligible designated beneficiary categories, and 10-year rule mechanics. Verified June 2026.
5. DOL — ERISA spousal consent requirements for qualified plan beneficiary designations. ERISA § 205 requires written spousal consent to name a non-spouse primary beneficiary on a 401(k) or other qualified employer plan. IRAs are not ERISA plans and do not have this requirement. Verified June 2026.

Estate planning and beneficiary designation rules change with legislation, regulation, and custodian practices. Beneficiary designation forms are legally binding contracts — review with a qualified estate attorney and financial advisor before making changes. Values and rules verified as of June 2026.

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