Most people spend years building a 401(k) or IRA, carefully watching the balance grow, making contribution decisions, adjusting allocations during market swings. Almost nobody spends time on what happens to that account after they die, and the answer, under the rules currently in effect in 2026, is significantly more complicated than most families expect.
The rules governing 401(k) and IRA inheritance were overhauled by the SECURE Act in 2019 and then refined again by SECURE Act 2.0 in 2022. Final IRS regulations resolving years of ambiguity took effect in 2025 and continue into 2026, meaning this is the first full year where heirs must fully comply with the updated framework. The stakes are real: miss a required withdrawal, and the IRS can impose a penalty of 25% on the amount you failed to take out.
Who inherits, their relationship to the original account owner, and the age at which the owner died all determine the rules that apply. Here are eight things retirees and their families need to understand about 401(k) IRA inheritance.
1. Your Beneficiary Form Is More Powerful Than Your Will
Beneficiary forms on retirement accounts override the instructions in a will. IRAs and 401(k)s follow contract rules that direct funds to the named beneficiaries on those forms, even when families expect a different outcome.
After someone passes, their retirement account sends its balance to whoever is named on that form, not to whomever the will designates. The paperwork may have taken only five minutes to fill out at work and was never updated afterward. Families have found themselves stunned to discover that a $400,000 IRA passed to an ex-spouse simply because no one changed the beneficiary designation after the divorce.
If your will leaves “everything to my children,” but your 401(k) still names a former partner or a parent from decades ago, the company must follow the beneficiary form. Courts, employers, and financial institutions rely on those signed designations, even when they clash with family expectations. Log into every retirement account you hold and confirm the named beneficiary is who you intend it to be today, not who it was when you opened the account fifteen years ago.
2. Spouses Get Far More Options Than Anyone Else
The rules treat surviving spouses differently from every other type of beneficiary. If you are the surviving spouse and the sole designated beneficiary, you can elect to treat the inherited IRA as your own. That single option changes the entire tax picture.
The surviving spouse can make the inherited IRA their own and add the inherited IRA assets to their own IRA, though it has to be the same type. If the spouse had a Roth IRA, the inheriting spouse must transfer the funds into a new or existing Roth IRA in their own name. RMDs are then calculated using the spouse’s own age, allowing them to delay required distributions until they reach the applicable RMD age. That age is currently 73, when you must generally start taking withdrawals from your traditional IRA, SEP IRA, SIMPLE IRA, and retirement plan accounts.
A spouse who is under 59½ may want to stay as an inherited IRA beneficiary rather than rolling the funds into their own IRA, specifically to avoid the 10% early-withdrawal penalty that would apply to their own account. Once they roll the funds in, they’re subject to standard early withdrawal rules. Staying as a named beneficiary avoids that penalty while still offering access to the funds.
3. The “Stretch IRA” Strategy Is Gone for Most Beneficiaries
Before 2020, a non-spouse beneficiary who inherited an IRA could spread withdrawals across their own lifetime. An adult child inheriting a parent’s account at 40 could potentially stretch distributions over another four or five decades, allowing the bulk of the account to keep growing tax-deferred. The SECURE Act made significant changes to IRA and retirement plan rules. One of the most noteworthy was the 10-year rule, which requires a total distribution of inherited assets by December 31 of the year containing the 10th anniversary of the account owner’s death.
This change has enormous tax implications for adult children inheriting large accounts. If your parent built a $500,000 traditional IRA over their working years, you now have a decade to draw it down entirely, with every dollar counted as ordinary income in the year it’s withdrawn. Pulling it all out in year ten means stacking $500,000 on top of your own salary for that year, potentially pushing you into the top federal bracket.
Planning withdrawals across the ten years to stay in a lower bracket is far less painful, particularly in years when your own income is lower, such as before Social Security kicks in, during a career gap, or alongside significant deductible expenses. In general, it’s often advantageous to withdraw assets from the inherited IRA or 401(k) in equal installments over the entire 10-year period. The strategy is designed to smooth out the impact of additional taxable income and help lower the risk of bumping you into a higher marginal tax bracket by mistake.
4. Whether the Original Owner Had Started RMDs Changes Everything
Image Credit: Pexels
The 10-year rule doesn’t work the same way depending on whether the original account owner had reached their Required Beginning Date (RBD), the date by which they were required to start taking their own mandatory annual withdrawals. Under IRS inherited IRA beneficiary rules, whether the owner died before or after that date determines how beneficiaries must take distributions.
The final RMD regulations confirm that for beneficiaries of account owners who die before the RBD, or beneficiaries of Roth IRA owners, there are no required annual distributions. These individuals may take distributions in any amount at any time, as long as they deplete the account by December 31 of the year containing the 10th anniversary of the account owner’s death. The final RMD regulations also confirm that designated beneficiaries of account owners who die on or after the RBD must take annual life expectancy payments in years one through nine.
The Required Beginning Date is April 1 of the year after the IRA holder turns 73, previously age 70½ prior to the SECURE Act and age 72 prior to SECURE 2.0, effective January 1, 2023. So if your parent died at 68, before reaching that threshold, you have full flexibility over how you spread the withdrawals across ten years. If they died at 78 and had been taking distributions for several years, you’re locked into annual withdrawals from day one. Confirming this single fact is the first thing any beneficiary should establish when they inherit an account.
5. The 2025 Penalty Waiver Grace Period Has Ended
For four years after the SECURE Act passed, taxpayers and the IRS argued over whether the 10-year rule also required annual RMDs during years 1-9, or whether you could let the account ride and take everything in year 10. The IRS announced penalty relief for 2021, 2022, 2023, and 2024 missed RMDs while the matter was unresolved.
That grace period is over. The July 19, 2024 Final Regulations settled it: the annual-RMD obligation applies for the 2025 distribution year onward. Beneficiaries who took nothing in 2021 through 2024 owe nothing retroactively, but must restart for 2025 if the decedent died after their RBD.
The penalty for missing a required annual distribution is steep: an excess accumulation penalty tax equal to 25% of the amount that should have been taken but was not. If the failure is corrected in a timely manner, the penalty tax is further reduced to 10%. If you inherited a traditional IRA between 2020 and 2024 and have taken nothing out, confirming whether annual distributions now apply to your specific situation is urgent.
6. Roth Inheritance Follows Different Rules, Usually Better Ones
Image Credit: Pexels
Roth IRAs and Roth 401(k)s were funded with after-tax money, which means the tax was already paid when contributions went in. The 10-year rule applies to inherited Roth IRAs too, but inherited Roth IRAs are subject to the 10-year rule without required minimum distributions during years one through nine. Roth IRA owners are always considered to have died before their RBD.
Withdrawals of contributions from an inherited Roth are tax-free. Most withdrawals of earnings from an inherited Roth IRA account are also tax-free. However, withdrawals of earnings may be subject to income tax if the Roth account is less than five years old at the time of the withdrawal.
Inheriting a Roth IRA is almost always the better scenario for a non-spouse beneficiary. You still have to empty the account within 10 years, but you can let it grow tax-free for the entire decade and pull it all out in year ten without owing a cent in federal income tax on qualified distributions. To distribute all funds from an inherited Roth IRA tax-free, a five-year period must be satisfied. The five-year period is not redetermined when the Roth IRA owner dies: a beneficiary is credited with any years attributable to the Roth IRA owner. Most Roth accounts passed down by retirees will already have cleared that threshold.
7. Certain Beneficiaries Are Exempt From the 10-Year Rule
Image Credit: Pexels
Not everyone falls under the 10-year cleanup deadline. A category the IRS calls “eligible designated beneficiaries” (EDBs) can still use the old stretch rules, spreading withdrawals across their own life expectancy rather than being forced out in a decade. Eligible designated beneficiaries are exempt from the 10-year rule. This applies to beneficiaries who are surviving spouses or minor children (until age 21) of the deceased account owner, beneficiaries who are chronically ill or disabled, and beneficiaries who are not more than 10 years younger than the deceased IRA owner. The 10-year clean-out rule also doesn’t apply to beneficiaries who are older than the deceased IRA owner.
So if a 70-year-old inherits an IRA from a 68-year-old sibling, the 10-year deadline does not apply.
The minor child exemption has an important asterisk. Minor children of the original account owner can take life expectancy distributions through age 21, and then the 10-year rule applies until age 31. So the 10-year clock doesn’t start at the date of the parent’s death, it starts later, when the child legally becomes an adult. Grandchildren are not included in the minor child category even if they are actually minors, so they fall under the standard 10-year deadline.
8. Naming a Trust as Beneficiary Requires Careful Setup
Image Credit: Pexels
Trusts are a legitimate estate planning tool for retirement accounts, particularly when the intended heir is a minor, has a disability, or is in a situation where an outright inheritance would create problems, a creditor issue, a substance abuse challenge, or a blended family situation where you want the money managed carefully. Many people find the idea of leaving IRA assets to a trust, rather than to individual beneficiaries, appealing because they can include language in the trust directing when and how the assets can be distributed. The trust can also provide additional benefits, such as asset protection from creditors and centralized asset management.
The SECURE Act’s end of the stretch IRA significantly changed the math for trusts. Conduit trusts are designed to pay out all distributions, including RMDs, to the trust beneficiaries, with the beneficiaries paying the income taxes on the distributions. Pre-SECURE Act, if drafted properly, the trust could calculate the RMD based on the life expectancy of each trust beneficiary. Essentially these distributions would continue for the beneficiary’s lifetime. After the SECURE Act, a conduit trust named as an IRA beneficiary must now pass distributions that empty the account in ten years rather than over a lifetime, which can force much larger taxable payouts than the original grantor ever intended.
Accumulation trusts differ from conduit trusts in that they provide the trustee with discretion in determining whether to pay out or retain any distributions taken from the inherited IRA. This flexibility allows for assets to remain in trust protected from any outside creditors and alleviates the IRA owner’s concern of having beneficiaries receive assets either too soon or in too large an amount. The trade-off is that trusts reach the highest federal tax bracket at very low income levels, which can significantly reduce what ultimately reaches the beneficiary.
If you are leaving your IRA to an irrevocable trust and have not had your documents reviewed by an attorney since the end of 2019, it is critical that you do so to make sure distributions will be paid in accordance with your wishes.
Read More: 10 Things Younger Generations Get Completely Wrong About Boomers
What to Do With All of This
The rules around 401(k) IRA inheritance are not going to get simpler. The SECURE Act of 2019, followed by SECURE 2.0 in 2022, brought the most significant changes to inherited IRA rules in decades, the penalty grace period has ended, and beneficiaries who inherited accounts as far back as 2020 are now required to make annual distributions if the original owner was past their Required Beginning Date. The factors that affect the distribution requirements for inherited retirement accounts include whether the account owner died after 2019, the relationship of the beneficiary to the account owner, and whether the original account owner died before or after their required beginning date.
If you are the account owner, the most useful action you can take today has nothing to do with investments. It’s logging into every account, confirming the beneficiary designation is correct, and making sure it coordinates with the rest of your estate plan. If your will says one thing and your beneficiary form says another, the form wins every time, regardless of your intent. If you have recently inherited an account, the first thing to establish is whether annual distributions are required starting now, or whether you have flexibility over the next decade. The answer to that one question changes your entire tax strategy for the coming ten years, and 2026 is not the year to guess at it.
Disclaimer: This information is not intended to be a substitute for professional medical advice, diagnosis, or treatment and is for information only. Always seek the advice of your physician or another qualified health provider with any questions about your medical condition and/or current medication. Do not disregard professional medical advice or delay seeking advice or treatment because of something you have read here.
AI Disclaimer: This article was created with the assistance of AI tools and reviewed by a human editor.