Your 401(k) does not disappear when you die.
The remaining vested account is paid under the plan's beneficiary and death-benefit rules. Who receives it depends heavily on the beneficiary designation, marital status, plan terms and any legal orders that apply.
This is one of those financial tasks that is easy to ignore because nothing feels urgent—until a marriage, divorce, birth or death makes the old form suddenly very important.
Quick answer:** A 401(k) is generally paid to the beneficiary recognized under the plan. A surviving spouse often has strong rights and many plans require the spouse to be the primary beneficiary unless the spouse properly consents to someone else. Non-spouse beneficiaries usually face inherited-account distribution rules, often including a 10-year deadline under current law. Review your designation after major life events.
First: the beneficiary form is not a minor administrative detail
A beneficiary is the person or entity designated to receive the retirement benefit after the participant dies.
The IRS notes that the account owner generally designates beneficiaries under the plan's procedures, while some plans require specific beneficiaries under their terms. See the IRS retirement beneficiary guide ↗.
Do not assume your will automatically fixes an old retirement-plan beneficiary designation.
Retirement plans have their own federal and plan rules. If your estate plan and beneficiary form point in different directions, that can create exactly the kind of dispute you were trying to avoid.
The practical solution is simple: keep the beneficiary form current.
What happens if you are married?
A spouse often has special protection under employer retirement-plan rules.
The IRS explains that many plans require a spouse to be the primary beneficiary unless the spouse gives written consent to another beneficiary. Survivor-annuity rules can also apply depending on the plan type and features.
That means a married participant usually should not assume they can simply name a child, parent or new partner instead of the spouse without following the plan's required consent process.
If you want someone other than your spouse to receive the account, ask the administrator exactly what spouse-consent form is required and whether it must be notarized or witnessed.
What if you are not married?
You generally have more freedom to name another person or an entity, subject to plan rules.
Common choices include:
- A partner
- Adult children
- A trust
- Other relatives
- An estate
- A charity
The tax and distribution consequences can differ depending on who or what you name.
Naming “my estate” because you have not decided yet can create a very different result from naming an individual directly. If the account is large or your family situation is complicated, coordinate the designation with your estate plan.
What happens if you name multiple beneficiaries?
Plans often allow percentage allocations.
Example:
- Child A: 50%
- Child B: 50%
Or:
- Spouse: 80%
- Charity: 20%, if permitted and properly designated
Make sure the percentages add to 100% and that the plan accepts the designation exactly as written.
Also name contingent beneficiaries if the plan allows it. A contingent beneficiary receives the account if the primary beneficiary dies before you or otherwise cannot take the benefit under the plan rules.
What happens after divorce?
Divorce is a “check the beneficiary today” event.
Do not assume the divorce decree automatically updates the retirement plan's administrative records.
The IRS says a participant who divorces may want to change the beneficiary and should contact the plan administrator for the correct forms. A former spouse can also have rights under a Qualified Domestic Relations Order, or QDRO. See the IRS retirement plan divorce guidance ↗.
A QDRO can require the plan to pay some or all of a participant's benefit to a spouse, former spouse, child or other dependent who qualifies as an alternate payee.
Plain English: a new beneficiary form does not erase a valid court order.
What happens after remarriage?
Review the designation again.
A new spouse can have federal plan rights that change what you thought your old beneficiary form accomplished.
If you have children from a prior marriage and want them to receive some of the account, do not rely on an old form or a verbal understanding. Ask the plan administrator what spousal consent is required, then coordinate that with your estate attorney if the account is significant.
What happens when a beneficiary inherits a 401(k)?
The beneficiary does not usually get to treat the inherited 401(k) exactly like their own savings account.
Distribution choices depend on:
- Whether the beneficiary is the spouse
- Whether the beneficiary qualifies as an “eligible designated beneficiary” under the tax rules
- Whether the original owner died before or after the required beginning date
- What distribution forms the plan offers
- Whether a rollover is available
The plan administrator should tell the beneficiary which plan distribution options are available.
Spouses usually have more options
A surviving spouse often has more flexibility than a non-spouse beneficiary.
Depending on the facts and plan rules, a spouse may be able to:
- Keep the money in an inherited account
- Roll eligible money to an IRA
- In some cases roll it into their own retirement arrangement
- Take distributions under spouse-specific timing rules
Do not rush the rollover. The best choice can depend on the surviving spouse's age, need for money, creditor considerations and tax situation.
The 10-year rule for many non-spouse beneficiaries
For many beneficiaries of owners who died in 2020 or later, the SECURE Act requires the inherited account to be emptied by the end of the 10th year after the owner's death.
There are exceptions for “eligible designated beneficiaries,” which can include:
- A surviving spouse
- A minor child of the account owner, subject to later transition rules
- A disabled person
- A chronically ill person
- A person not more than 10 years younger than the owner
The IRS explains these categories in its beneficiary rules ↗.
The 10-year rule does not always mean “take nothing for nine years and empty it in year ten.” Depending on whether the original owner had already reached the required beginning date and the beneficiary's status, annual RMD rules can also matter during the 10-year period.
That area has changed in recent years, so use current IRS guidance for the year of the death rather than an old inherited-IRA article.
Does a beneficiary pay tax on an inherited 401(k)?
Traditional pre-tax 401(k) money is generally taxable to the beneficiary when distributed, in much the same way it would have been taxable to the original participant.
Roth money can have different tax treatment, particularly if the Roth qualification period has been met.
The beneficiary's tax result depends on the account source, distribution timing and other facts.
Do not confuse estate tax questions with income tax on the retirement distribution. They are different tax systems.
What if the beneficiary wants all the money at once?
Many plans allow a lump-sum distribution to beneficiaries, but the tax cost can be large.
Suppose a non-spouse beneficiary inherits a $400,000 traditional 401(k) and takes the entire amount in one calendar year.
That taxable distribution can push a large amount of income into one year.
If the plan and tax rules allow a longer distribution window, spreading withdrawals can sometimes produce a different tax result.
The beneficiary should understand the deadline and the tax impact of the chosen schedule.
What if there is no beneficiary on file?
The plan document generally has a default beneficiary order.
It might prioritize a spouse, children, estate or another category, but do not guess.
If no valid designation exists, the administrator follows the plan's default terms and applicable law.
That can produce a result very different from what the participant intended.
What if the beneficiary dies before the account owner?
That is why contingent beneficiaries matter.
If the primary beneficiary predeceases the participant and no replacement designation is filed, the plan's default rules may apply to that share.
Check beneficiary forms after a beneficiary dies, not just after changes in your own household.
Do 401(k) beneficiaries override a will?
Do not treat this as a one-line universal rule without legal context.
Employer retirement plans are governed by their plan documents and federal benefit rules, and administrators pay benefits according to valid plan procedures and applicable legal orders. A will does not function as a substitute beneficiary form in the same way it directs ordinary probate property.
If your will and retirement beneficiary designation conflict, update the retirement designation directly rather than hoping the estate documents sort it out later.
Beneficiary rules and QDROs
A QDRO deserves its own mention because it can create rights for a spouse, former spouse, child or dependent.
For example, a divorce order may award a former spouse 40% of a 401(k). If the order becomes a qualified domestic relations order accepted by the plan, later beneficiary decisions must be read alongside those rights.
If a divorce involved retirement benefits, keep a copy of the approved QDRO and confirm the plan implemented it.
What the public Form 5500 can and cannot tell you
A public filing can show the plan sponsor, plan name, participants, assets, reported employer contributions, administrative expenses and service providers.
It does not tell you your beneficiary designation.
It also cannot tell you whether a spouse consent form is on file, whether a QDRO applies to you, or which person currently has rights to your account.
The database can help you identify the plan, not your heir.** Find the employer plan, then sign in to the plan recordkeeper or contact the administrator to confirm the beneficiary on file.
The five-minute beneficiary audit
Do this once a year and after any major life event.
1. Sign in to the plan account
Find “Beneficiaries,” “Profile,” or “Personal information.”
2. Confirm the primary beneficiary
Check the actual name and percentage. Do not rely on memory.
3. Confirm contingent beneficiaries
If the primary beneficiary dies first, who is next?
4. Check spouse-consent requirements
If you are married and someone other than the spouse is named, confirm that the plan has any required valid consent.
5. Save proof
Download or print the confirmation if the system provides one.
A two-minute screenshot can be useful evidence that you actually submitted the change, though the plan's official records control.
Life events that should trigger an immediate review
- Marriage
- Divorce
- Remarriage
- Birth or adoption of a child
- Death of a spouse or beneficiary
- A child reaching adulthood
- A new estate plan or trust
- A major change in relationship
- A QDRO or other court order
- Leaving an employer
The IRS specifically recommends reviewing retirement beneficiaries after marriage, children and similar life events.
Should you name minor children directly?
This can create practical complications because minors generally cannot manage inherited property on their own.
Depending on state law, plan rules and the amount involved, a custodian, guardian or trust arrangement may be needed.
If you want young children to benefit from a large 401(k), this is a good reason to coordinate the beneficiary designation with an estate-planning attorney rather than simply typing the child's name into a form.
Should you name a trust?
Sometimes, but it adds complexity.
Trusts can help with control, creditor concerns, minor beneficiaries or special family circumstances, but retirement-account tax rules for trusts are technical.
Do not name a trust solely because “trusts avoid probate.” Retirement accounts with valid beneficiary designations already have their own transfer process.
Use a trust when it solves a specific estate-planning problem and the lawyer drafting it understands retirement assets.
Frequently asked questions
Does my spouse automatically get my 401(k)?
Spouses often have strong rights in employer retirement plans, and many plans require the spouse to be primary beneficiary unless the spouse properly consents to someone else. Check the plan's current rules.
Can I name my child instead of my spouse?
Possibly, but a married participant may need the spouse's written consent. Do not assume an online beneficiary change is effective without the required consent.
What happens to a 401(k) after divorce?
A QDRO may give an ex-spouse rights to part of the account. You should also review and update the beneficiary designation through the plan's procedures after divorce.
Do inherited 401(k)s have to be emptied in 10 years?
Many non-spouse designated beneficiaries are subject to a 10-year rule, but eligible designated beneficiaries have different rules and annual distributions can also be required in some cases. Use current IRS guidance for the specific death year and beneficiary type.
Can a beneficiary roll an inherited 401(k) to an IRA?
Spouse and non-spouse rollovers have different rules. A surviving spouse generally has more options. A non-spouse beneficiary may be able to make a direct rollover to a properly titled inherited IRA if allowed and eligible. Do not have the check paid to yourself first without understanding the rules.
Bottom line
The best beneficiary plan is boring: the right person is named, the percentages are correct, spouse consent is handled, contingent beneficiaries are listed, and the form is reviewed after life changes.
Do not wait for an estate-planning emergency to discover who is on the account.
Find your employer plan if you need the plan and service-provider context, then confirm the beneficiary directly with the recordkeeper or administrator.