What Happens to Your Retirement Accounts When You Die — and How to Make Sure Your Family Keeps What You Built
You have spent decades building your retirement accounts. But here is a question most people cannot answer: do you actually know who gets that money when you die?
Not who your estate plan says. Not who your will names. The IRS does not care about either of those documents. Your 401(k) and your IRA go to whoever is named on the beneficiary designation form — period. Even if that person is an ex-spouse. Even if your will says something completely different.
Beneficiary planning is one piece of a complete retirement strategy. You may also find our video on Roth IRA strategies for high-income earners helpful.
The Most Common Beneficiary Mistake — and Why Your Will Cannot Fix It
The mistake Andrew sees constantly: someone passes away, the family goes to settle the estate, and the retirement accounts go to the wrong person because the beneficiary form was never updated after a divorce, a birth, or a death in the family.
The account just never got updated. And no estate plan, however carefully drafted, can override a beneficiary designation once it is in place.
Step one — before any other retirement planning conversation — is to pull every retirement account you own and confirm that the beneficiary listed is exactly who you intend it to be. Not who you think it is. Who it actually says.
How the 10-Year Rule Works for Inherited IRAs
The rules around inherited retirement accounts changed significantly in 2020. Under current law, most non-spouse beneficiaries — adult children, siblings, anyone who is not a husband or wife — must fully empty an inherited IRA within 10 years of the original owner's death.
In most cases there are no required annual withdrawals during those 10 years. But the account must be zeroed out by the end of year 10. And that creates a tax problem that most families do not see coming.
If you leave a $1 million traditional IRA to an adult child who is already in their peak earning years, they are pulling that money out and paying income tax on it on top of their own salary. They could easily land in the 32% or 37% tax bracket on money you spent a career building. The account does not disappear — but a significant portion of it goes to taxes, often inside a decade.
Why Roth Conversions Are a Legacy Strategy, Not Just a Retirement Strategy
Most people think about Roth conversions in terms of their own retirement income and tax planning. But there is a second reason that high-income earners and business owners should consider converting traditional IRA balances before they pass away.
When you do a Roth conversion, you pay the tax now at your rate. Your heirs do not pay it later at theirs. If your children will be in a high bracket when they inherit — and many adult children of high-income retirees will be — you may be doing them a significant financial favor by converting now, even if the math is close for your own retirement picture.
This is one of the strongest arguments for a deliberate, multi-year Roth conversion strategy in the years before and during retirement. It is not just about your tax bill. It is about theirs.
For a broader look at how retirement account structure affects long-term income, see our guide on how much you can safely spend in retirement .
Naming a Trust as Your IRA Beneficiary — What to Know First
Some people name a trust as their IRA beneficiary, typically to control how and when heirs receive the money. The intention is sound. But if the trust is not structured correctly for this specific purpose, it can actually accelerate the tax hit and compress distributions into a shorter window than the 10-year rule would otherwise allow.
Trust tax brackets are also among the steepest in the tax code. A trust hits the top federal income tax rate at just over $15,000 of taxable income. Compare that to the much higher thresholds for individual filers, and the difference in tax cost can be substantial.
If a trust is part of your estate plan and retirement accounts are involved, your estate attorney and your financial advisor need to review it together. This is not a document that can be set and forgotten. Changes in tax law, family circumstances, and account balances can all affect whether the trust structure still makes sense.
What to Do Right Now
Pull every retirement account — 401(k), IRA, Roth IRA, old employer plans — and verify the beneficiary designations. Do not assume. Confirm what the form actually says.
Think about whether your heirs will receive traditional or Roth accounts, and what the tax difference actually means for them given their likely income and bracket at the time of inheritance.
If you have significant traditional IRA balances, talk to your advisor about whether a multi-year Roth conversion strategy makes sense as a legacy planning tool, not just a personal tax strategy.
And if a trust is involved anywhere in your estate plan, get your estate attorney and financial advisor aligned before the next review cycle.
Frequently Asked Questions About Retirement Account Inheritance
Who inherits my 401(k) or IRA when I die?
Your retirement accounts go to whoever is named on the beneficiary designation form on file with the financial institution — regardless of what your will or estate plan says. Beneficiary designations are a direct legal contract between you and the account custodian and they override all other estate documents. If no beneficiary is named, the account typically goes through probate, which can be a slow, costly, and public process. Reviewing and updating your beneficiary designations regularly is one of the most important steps in retirement estate planning.
Does my will override my IRA beneficiary designation?
No. Your will does not control what happens to your IRA or 401(k). Retirement accounts with named beneficiaries pass outside of probate and outside the reach of your will entirely. Even a carefully drafted estate plan cannot redirect retirement account assets if the beneficiary designation says otherwise. This is why confirming the actual name on file — not just who you believe is listed — is essential.
What is the 10-year rule for inherited IRAs?
Under the SECURE Act, most non-spouse beneficiaries who inherit an IRA must fully distribute the account within 10 years of the original owner's death. This applies to adult children, siblings, and other non-spouse heirs. There are generally no required annual withdrawals during that 10-year window, but the account must be fully emptied by the end of year 10. The tax impact depends on whether the account is a traditional IRA — where all withdrawals are taxable as ordinary income — or a Roth IRA, where qualified withdrawals are tax-free. Eligible designated beneficiaries, including surviving spouses and minor children, have different rules and may not be subject to the 10-year requirement.
How are inherited IRAs taxed?
It depends on the account type. A traditional IRA passes to heirs with a tax bill attached — every dollar they withdraw is taxed as ordinary income in the year it is taken out. If the heir is already in a high tax bracket, distributions from a large inherited IRA can push them significantly higher. A Roth IRA passes tax-free. Heirs still must empty the account within 10 years under current law, but none of those withdrawals are subject to income tax. The difference in after-tax value between a traditional and Roth IRA inheritance can be substantial, especially for high-earning beneficiaries.
Should I do a Roth conversion to help my heirs?
For many high-income earners, yes. A Roth conversion means you pay income tax on the converted amount now, at your current rate. Your heirs then inherit a Roth IRA and pay no income tax on withdrawals. If your children or other beneficiaries will be in a high tax bracket when they inherit — which is common when heirs are in their peak earning years — you may be doing them a significant financial favor by converting before you pass away. The right decision depends on your current tax rate, projected future rates, the size of your IRA balances, and your overall estate plan.
Can I name a trust as my IRA beneficiary?
Yes, but it requires careful structuring. Naming a trust as an IRA beneficiary can give you more control over how and when heirs receive the money. However, if the trust is not specifically designed to work with inherited IRA rules, it can accelerate the tax timeline and compress distributions in ways that increase the overall tax bill. Trust tax brackets are also significantly steeper than individual brackets — trusts reach the top federal income tax rate at just over $15,000 of taxable income. If a trust is part of your estate plan and retirement accounts are involved, your estate attorney and financial advisor should review the structure together.
What happens to my 401(k) if I die without naming a beneficiary?
If no beneficiary is named, the account typically passes to your estate and goes through probate. This means the distribution is governed by your will or, if no will exists, by state intestacy law. Probate can be slow, costly, and public. It also removes the option for a surviving spouse to do a spousal rollover, which is one of the most tax-efficient ways to handle an inherited retirement account. Naming a primary and contingent beneficiary on every retirement account avoids this entirely.
How often should I update my beneficiary designations?
At a minimum, review your beneficiary designations after any major life event — a marriage, divorce, birth, adoption, or the death of a named beneficiary. Beyond that, an annual review as part of your broader financial planning process is a reasonable standard. Account custodians do not notify you when a beneficiary becomes outdated. The responsibility to keep designations current sits entirely with the account holder.
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