Inherited IRAs and Retirement Accounts: What Beneficiaries Need to Know

If you've just learned that you're the beneficiary of someone's IRA, 401(k), or other retirement account, you may be getting calls or emails pushing you to "do something" right away. Take a breath first. Retirement accounts follow a different set of rules than almost everything else a person leaves behind, and a wrong first move can be impossible to undo.

The will does not control this account

Retirement accounts pass outside of probate. The person who dies fills out a beneficiary designation form with the account custodian or plan administrator, and whoever is named on that form receives the account directly — regardless of what the will says. If the will names one person as the beneficiary of "everything" but the IRA form names someone else, the IRA form wins.

If no living person or valid beneficiary was named — or every named beneficiary died first — the account typically falls back to a default set out in the plan's own paperwork, which is often the account owner's estate. That's usually a worse outcome: it loses the flexibility a named individual beneficiary would have had, and it now has to move through probate. If you're not sure who was actually named, the custodian or plan administrator can tell you — they, not the will, are the authority on this.

Rule one: slow down

Almost nothing about an inherited retirement account has to be decided this week. Death certificates take time to arrive, custodians take time to process paperwork, and most of your options stay open for a reasonable window. The one thing you want to avoid is an irreversible move made before you understand your choices — most commonly, cashing out the account into a personal check when you meant to keep the money invested and tax-deferred. Once money is paid out to you directly, in many cases you cannot put it back. That single mistake can turn a manageable inheritance into a large, immediate tax bill.

Be cautious of anyone — including a well-meaning advisor — who pushes you to roll the account into a specific product quickly. You're allowed to take your time, get a second opinion, and read the paperwork before you sign anything.

How long you have to empty the account

For deaths occurring in 2020 or later, federal law (the SECURE Act) sorts beneficiaries into two groups:

• Most designated beneficiaries — typically adult children, other relatives, and friends named on the form — generally must empty the inherited account by the end of the 10th year after the owner's death. Within that 10-year window, the IRS's current rules on whether you also have to take a distribution every single year (rather than just emptying it by year 10) depend on a technical fact: whether the original owner had already reached their own required withdrawal age at the time of death. This is an area where the IRS's regulations are recent and detailed, so rather than guess, check the beneficiary rules on irs.gov or ask the account custodian which pattern applies to your specific account.
• "Eligible designated beneficiaries" get more flexibility and can generally stretch withdrawals over their own life expectancy instead of the 10-year rule. This category includes the account owner's surviving spouse; a minor child of the account owner (until they reach the age of majority, after which the 10-year clock starts); a beneficiary who is disabled or chronically ill, as those terms are defined by the IRS; and a beneficiary who is not more than 10 years younger than the account owner.

These categories and the mechanics inside the 10-year rule are genuinely technical, and the IRS has issued detailed final regulations on them. Don't rely on secondhand summaries, including this one, for the fine print — the custodian and irs.gov's Retirement Topics – Beneficiary page are built to answer fact-specific questions.

If you're the surviving spouse

A surviving spouse generally has more options than any other beneficiary, including the ability to roll the inherited account into their own IRA, treat it as their own, or keep it titled as an inherited account. Which choice makes sense often depends on the surviving spouse's age and when they'll need the money — moving funds into your own IRA can subject early withdrawals to different rules than keeping the account titled as inherited. This is a decision worth thinking through with a professional rather than defaulting to whatever the custodian's form offers first, especially if you're not yet at typical retirement age.

Traditional vs. Roth accounts

The type of account you inherited matters. Distributions from an inherited traditional IRA or 401(k) are ordinary taxable income to you as you take them out. Distributions from an inherited Roth account are generally tax-free, as long as they're qualified — but the same emptying timeline (the 10-year rule, or the life-expectancy option for eligible designated beneficiaries) still applies to Roth accounts. Tax-free doesn't mean rule-free.

No step-up in basis

This is one of the most important — and most misunderstood — differences between a retirement account and most other inherited property. When you inherit a house or a taxable brokerage account, the asset's cost basis typically "steps up" to its value on the date of death, which can wipe out a lot of built-in capital gains tax. Retirement accounts do not get this treatment. Money taken out of an inherited traditional IRA or 401(k) is taxed as ordinary income to the beneficiary, the same way it would have been taxed to the original owner, no matter how much the account has grown.

Workplace 401(k) plans: the spouse is automatically the beneficiary

For 401(k)s and other plans governed by the federal law ERISA, a special rule protects spouses: the account owner's surviving spouse is automatically the beneficiary of the plan unless that spouse signed a written waiver, and that waiver generally has to be notarized or witnessed by a plan representative to be valid. A beneficiary designation form naming someone else — a prior spouse, a child, anyone — generally cannot override the current spouse's rights under the plan without that specific spousal consent on file. Even a will, and in some circumstances even a divorce decree, may not be enough on its own to displace the plan's own spousal-consent paperwork; the plan document and what's actually on file with the plan administrator control. If a beneficiary dispute like this comes up, the plan administrator can tell you what's on file, and it's worth talking to a lawyer before assuming any outcome. Note that this automatic-spouse protection is a workplace-plan (ERISA) rule; it works differently for IRAs, which aren't governed by ERISA.

Creditor and bankruptcy protection is weaker than you'd think

Many people assume that because the money came from a retirement account, it's shielded from creditors the same way the original owner's account was. That's not automatically true. In a 2014 case, Clark v. Rameker, the U.S. Supreme Court held that an inherited IRA does not count as "retirement funds" for the federal bankruptcy exemption, because the beneficiary can withdraw the whole account at any time for any purpose, can't add new contributions, and (outside the spousal options above) generally must draw it down on a schedule regardless of their own retirement timeline. Some states offer their own creditor protections for inherited retirement accounts, and these vary considerably by state — worth asking a local attorney about if creditor exposure is a concern.

Practical steps

• Get certified copies of the death certificate. The custodian or plan administrator will need one to begin the transfer.
• Contact the custodian directly rather than relying on a general advisor's description of the account rules — every plan and custodian has its own paperwork and deadlines.
• Retitle the account correctly as an inherited or beneficiary IRA in both your name and the deceased owner's name. The titling is not a formality — getting it wrong can jeopardize the tax treatment.
• Never commingle the funds with your own retirement account unless you're a spouse making a proper rollover or spousal election. Depositing inherited funds into your existing IRA, or writing yourself a check first, can trigger the exact irreversible outcome this guide warns about.
• Keep records of every form you sign and every account statement — you'll want them at tax time and if any dispute arises later.

When to get help

For anything beyond a small account, it's worth paying for an hour of a CPA's or fee-only financial advisor's time before you make any distribution decisions — the tax difference between an informed choice and a rushed one can be significant. For questions about a specific plan's deadlines, forms, or spousal-consent paperwork, the plan administrator or account custodian is the authoritative source; they're required to tell you the rules that apply to your account. And if you're dealing with a contested beneficiary designation, an unclear waiver, or a dispute among multiple beneficiaries, a lawyer who handles estate or ERISA matters can help before you sign anything you can't undo. If you're also sorting out other parts of the estate, our guides on beneficiary designation mistakes, what assets skip probate, and whether you owe tax on an inheritance cover the surrounding ground.

This article is general information, not legal, tax, or financial advice. Retirement account inheritance rules are technical and change with new IRS guidance — verify your specific situation with the account custodian, a qualified tax professional, and irs.gov before making decisions.