Beneficiary Designations: The Most-Overlooked Step

Educational guide — not legal or financial advice. Confirm specifics with a licensed attorney and financial advisor about your situation.

Why this is the single most important page on the site

Retirement accounts and life insurance pass by beneficiary designation — not by will, not by trust, not through probate. The named beneficiary on the form controls.

A will does not govern an account that carries a beneficiary designation: the plan pays the person named on the form, regardless of what the will says.

This is the most common, most expensive estate planning mistake American families make. And fixing it is free.

What “beneficiary designation” actually means

A beneficiary designation is a form attached to an account that says: “If I die, this person gets what’s in this account.” The form names a primary beneficiary (who gets it first) and usually one or more contingent beneficiaries (who get it if the primary is also deceased).

When you die, the institution holding the account (the brokerage, the insurance company, the bank) transfers the account directly to the named beneficiary upon receiving a death certificate. No probate. No will involvement. No court process.

The beneficiary form is the legally controlling document for that asset. It overrides:

• Your will
• Your trust (unless the trust is named as the beneficiary)
• State intestacy law
• Any verbal promise you made to someone else

This is why updating it matters so much.

Which accounts have beneficiary designations

The major ones, by frequency:

Retirement accounts

• 401(k) and 403(b) — employer-sponsored retirement plans
• 457 plans — for state and local government workers
• Traditional IRA — individual retirement account
• Roth IRA — same, with after-tax contributions
• SEP-IRA, SIMPLE-IRA — for self-employed and small business
• Pension plans — surviving spouse benefits, sometimes designations for non-spouse beneficiaries

Life insurance

• Term life insurance
• Whole life and universal life
• Final expense insurance
• Employer-provided group life insurance (often forgotten — check this one)
• Annuities with death benefits

Bank accounts

• Payable-on-death (POD) designations on checking, savings, money market accounts, and CDs
• Transfer-on-death (TOD) designations on brokerage accounts (separate from POD on bank accounts)

Health Savings Accounts

• HSA beneficiary designations — your HSA passes directly to the beneficiary

Education savings

• 529 plan successor account owner — who takes over the account if you die
• Coverdell ESA designations

Real estate (in some states)

• Transfer-on-death deeds (allowed in about 30 states) — name a beneficiary for real estate that transfers at death without probate

Most US adults have 6-15 accounts with beneficiary designations. The first step is making a list of all of them.

What can go wrong

The most common ways beneficiary designations fail:

1. Outdated beneficiary

A participant names a spouse on a 401(k), later divorces, remarries and updates the will but not the plan’s beneficiary form. 29 U.S.C. §1104(a)(1)(D) requires a plan fiduciary to discharge its duties “in accordance with the documents and instruments governing the plan insofar as such documents and instruments are consistent with” ERISA, so the plan pays the former spouse named on the form.

Some states revoke a designation in favour of a former spouse by statute on divorce. Where the plan is governed by ERISA, §1104(a)(1)(D) directs the fiduciary to the plan documents; each state’s revocation-on-divorce statute is set out on that state’s page.

2. No beneficiary named

The form was never completed. The account passes through your estate — meaning it goes through probate, may face creditor claims, and is distributed under the terms of your will (or intestacy if no will).

For a 401k or IRA, this also has tax consequences — non-designated retirement accounts often face accelerated taxation when they pass through the estate.

3. Wrong beneficiary

You named your “spouse” on a form. You divorced and remarried. You meant to name your new spouse but never updated. The form says “Linda Smith.” Linda Smith is still the beneficiary.

4. Deceased beneficiary with no contingent

Your beneficiary died before you, but you never updated the form, and no contingent beneficiary was named. The account passes through your estate.

5. Beneficiary is a minor child without a structure

You name your 8-year-old as the beneficiary of your life insurance. They die at age 9. The court appoints a conservator (often a relative or a court-appointed professional) to manage the money until the child turns 18 — at which point they receive it as a lump sum.

For larger amounts, this is usually undesirable. The fix is to name a trust for the child as the beneficiary, with rules about when and how the child receives the funds.

6. Beneficiary is a special-needs person without a special-needs trust

You name your adult child with disabilities as a direct beneficiary. The inheritance disqualifies them from means-tested government benefits (SSI, Medicaid). The fix is to name a special-needs trust as the beneficiary instead.

7. Beneficiary is the estate

Naming “my estate” as the beneficiary defeats the whole point — the asset now goes through probate and is subject to creditor claims. Named individuals keep the asset out of probate instead.

8. Forgotten old employer plan

An account left with a former employer’s plan keeps whatever beneficiary form is on file with that plan. Under §1104(a)(1)(D) the administrator pays according to those plan documents.

How to actually do this

A simple two-hour project most families never complete:

1. Make a list

Write down every account that has a beneficiary designation. Include:

• Account type (401k, IRA, life insurance, etc.)
• Institution name and contact info
• Approximate balance
• Current named primary beneficiary (if you can find out)
• Current named contingent beneficiary (if any)

Old employer plans you haven’t touched in years count. Group life insurance through current and former employers counts. The forgotten Roth IRA from when you were 25 counts.

2. Decide who you want

For each account, decide:

• Primary beneficiary: who should inherit if you die?
• Contingent beneficiary: who if the primary is also deceased?
• For minor or special-needs beneficiaries: is a trust the right structure?

A common starting structure for a married couple with adult children:

• Primary: spouse
• Contingent: adult children, equally, per stirpes

Per stirpes means if a child predeceases you, their share goes to their descendants (your grandchildren). The alternative — per capita — means if a child predeceases you, their share is redistributed among surviving children.

3. Each form, updated

For each account, contact the institution and submit a new beneficiary designation form. Most can be done:

• Online through the account portal
• By phone with a customer service representative
• By submitting a written form

A record of the submission date is what evidences the change.

4. Verify

A few weeks later, log in or call to confirm the new beneficiary is on record. Mistakes happen — forms get lost, designations get entered incorrectly. Verify.

5. Repeat regularly

The events that change who a designation names:

• Marriage — update to include or remove a spouse
• Divorce — definitely update
• Birth or adoption — add a child as a contingent
• Death of a named beneficiary — update
• Major life change of a beneficiary (divorce of a child, special-needs diagnosis)
• You move — verify the institution has your current address

When to use a trust as the beneficiary

For most adults inheriting from another adult, naming the person directly is fine. A trust as beneficiary makes sense when:

• The beneficiary is a minor — a trust holds the inheritance until they’re old enough to manage it
• The beneficiary has special needs — a special-needs trust preserves their government benefits eligibility
• The beneficiary has substance abuse issues, gambling problems, or financial irresponsibility — a trust can release funds over time rather than in a lump sum
• The beneficiary is in a difficult marriage — a trust can keep the inheritance separate from marital property
• Tax planning for large estates — certain trust structures can reduce estate tax exposure

These all involve naming a trust (which you’d have set up separately) as the beneficiary instead of an individual. See How Much Does a Living Trust Cost? and Will vs. Trust for more on when trusts make sense.

How beneficiary designations interact with your will

Quick reference for what controls what:

Asset type	Controlled by
401(k), IRA, Roth IRA	Beneficiary designation
Life insurance	Beneficiary designation
POD bank account	Beneficiary designation
TOD brokerage account	Beneficiary designation
Jointly owned property	Joint ownership (survivor)
Property in a funded trust	Trust
Everything else	Will (or intestacy if no will)

For most households, the will controls a smaller percentage of net worth than the beneficiary designations do. Both matter — but beneficiary designations are usually higher leverage.

Common questions

My will says my kids get everything. Doesn’t that override the beneficiary designation? No. Beneficiary designations override your will for the specific accounts they govern.

What if I want to leave specific dollar amounts rather than percentages? Most beneficiary forms allow percentages, not dollar amounts. The percentages are calculated against whatever’s in the account at your death. For specific dollar amounts, use your will.

Can I name multiple people as primary beneficiaries? Yes. A designation can name several beneficiaries, with the shares allocating the whole benefit.

Can I name a charity as beneficiary? Yes — and for retirement accounts especially, leaving the account to a charity can be tax-efficient because charities don’t pay income tax on the distribution.

What if my beneficiary dies and I forgot to update? The contingent beneficiary inherits. If no contingent is named, the asset usually passes through your estate.

Should I name my trust as the beneficiary? For most middle-class families, no — naming individuals directly is simpler and cleaner. Trust-as-beneficiary makes sense for specific situations (above). Talk to an estate attorney before changing your designations to your trust.

What about retirement accounts for non-spouses? For a defined contribution plan, 26 U.S.C. §401(a)(9)(H)(i)(I) applies §401(a)(9)(B)(ii) to a designated beneficiary by substituting “10 years” for “5 years”, and §401(a)(9)(H)(ii) limits the life-expectancy exception to an eligible designated beneficiary. This affects how the beneficiary uses the money but doesn’t change the basic mechanics of designation.

A simple sequence (do this today)

1. Make the list of every account with a beneficiary designation. Include forgotten old 401ks and old life insurance policies.
2. For each one, log in or call to check the current named beneficiary.
3. Anything outdated, changed through the institution’s online form or customer service.
4. Add a contingent beneficiary to any account that doesn’t have one.
5. Verify a few weeks later that the changes took effect.
6. Tell your spouse and at least one adult child where the records are.
7. Re-check after any of the life events listed above.

Related reading

• What Is Estate Planning? The Documents and What Each Does
• Estate Planning Checklist
• How to Avoid Probate
• Will vs. Trust: How They Differ
• Power of Attorney Explained
• How to Write a Will (and What Makes It Valid)

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Educational information only — not legal, tax, or financial advice. Beneficiary designation rules and the tax treatment of inherited accounts vary and change. Consult a licensed attorney and tax professional for advice on your specific situation. Sources: 29 U.S.C. §1104(a)(1)(D) (ERISA fiduciary duty to follow plan documents); 26 U.S.C. §401(a)(9)(H) (distribution of an inherited defined contribution plan), each read at Cornell LII on 2026-09-25.