Surviving Spouse 401(k) Rollover: 4 Paths and How to Choose

When you inherit a spouse's retirement account, you face decisions that need to be made relatively quickly — and the options available to you as a surviving spouse are meaningfully better than what any other beneficiary gets. A non-spouse beneficiary is stuck with the 10-year forced-depletion rule under the SECURE Act. You are not. But choosing the right path among your four options — and avoiding the early-withdrawal trap that catches many surviving spouses under 59½ — requires understanding how each option works mechanically before you act.

First: which account type are you inheriting?

The rules differ depending on whether you're inheriting a 401(k), 403(b), or 457(b) (an employer-sponsored plan) versus a traditional or Roth IRA.

Employer plan (401k/403b/457b): Federal law (ERISA § 205) gives you, as the surviving spouse, automatic default beneficiary status for defined-contribution plans — unless you signed a valid waiver during the marriage. No court order required. The plan administrator will require a death certificate and a distribution election form.

IRA: IRAs are not governed by ERISA's spousal protection rules. The account passes according to the beneficiary designation on file — which may or may not name you. If the IRA had no named beneficiary or named the estate, the account goes through probate and loses the surviving spouse's unique rollover option. This is the most common estate-planning failure in IRA accounts. (If you're facing that situation, an estate attorney is needed, not just a financial advisor.)

Assuming you are the named beneficiary, the four paths below apply to both inherited 401(k)s and inherited IRAs. One difference: the SECURE 2.0 § 327 election (Path 3) was specifically designed for inherited employer-sponsored plans, though the IRS's July 2024 proposed regulations extended similar treatment to inherited IRAs for surviving spouse beneficiaries.

The 4 paths for surviving spouses

Path 1: Spousal rollover into your own IRA (the traditional approach)

You roll the inherited account into a new or existing IRA in your own name. The account is treated as if you had owned it all along — not as an inheritance.

How it works: For an inherited 401(k), request a direct trustee-to-trustee rollover to an IRA. For an inherited IRA, retitle the account in your own name (not as "beneficiary"). Either way, the account becomes yours with the same rules as any IRA you opened yourself.

RMD treatment: RMDs start at your age 73 (SECURE 2.0 rule; age 75 if born in 1960 or later).¹ You use the Uniform Lifetime Table, which produces lower required distributions than the Single Life Table applied to non-spouse beneficiaries. You can also name new beneficiaries on the account after the rollover.

Creditor protection: Rollover amounts from a qualified employer plan (401k, 403b) retain unlimited federal bankruptcy protection after the rollover — they are not counted toward the $1,711,975 BAPCPA cap that applies to regular IRA contributions and earnings.² This distinction matters if asset protection is a concern.

The critical risk for spouses under 59½: Once you complete the spousal rollover, the account is treated as your own. Distributions before age 59½ are subject to the 10% early withdrawal penalty under IRC § 72(t) — the same as any early IRA distribution. If you're 52 and need $80,000 next year, rolling to your own IRA first costs you an extra $8,000 in penalty. Paths 2 and 4 avoid this.

Path 2: Keep as an inherited IRA (traditional approach)

You leave the account titled as an inherited (beneficiary) IRA in your name. You are the beneficiary, not the owner.

How it works: Contact the plan or IRA custodian and request that the account be transferred to an inherited IRA in your name. The title reads something like: "[Deceased's name], IRA, FBO [Your name], Beneficiary."

RMD treatment when your spouse died before their required beginning date (i.e., before turning 73): You can delay all distributions until the year your deceased spouse would have turned 73, at which point you begin distributions using the Single Life Table based on your own age — recalculated annually.

RMD treatment when your spouse had already started RMDs: You must continue taking at least the RMD amount in effect, calculated using the Single Life Table applied to the deceased's remaining life expectancy, reduced by one year annually. You can always withdraw more.

No 10% early withdrawal penalty — at any age. This is the key advantage of Path 2 over Path 1 for spouses under 59½. Inherited IRAs are explicitly exempt from the 10% early withdrawal penalty under IRC § 72(t)(2)(A)(ii).³ Distributions are fully taxable as ordinary income but carry no penalty surcharge regardless of your age.

Limitations: You cannot make new contributions to an inherited IRA. RMDs use the Single Life Table rather than the more favorable Uniform Lifetime Table. And when you die while the account is still inherited, your own beneficiaries face a compressed distribution schedule — the 10-year rule applies to the next generation.

Path 3: The SECURE 2.0 § 327 spousal election (new as of 2024)

SECURE 2.0 Act § 327, effective for distributions in 2024 and later, created a hybrid option: a surviving spouse can elect to be treated as the deceased employee for RMD purposes while keeping the inherited account structure — and its no-penalty rule.

You get owner-like RMD calculations without completing a full spousal rollover.

When § 327 applies automatically (your spouse died before their required beginning date, and you are the sole beneficiary): You delay RMDs until the year your deceased spouse would have turned 73, and when RMDs begin, they are calculated using your age on the Uniform Lifetime Table — the same table used by account owners. This is more favorable than Path 2's Single Life Table.⁴

When § 327 is elective (your spouse had already started RMDs): You can elect to calculate your RMDs as the longer of (a) your own age on the Uniform Lifetime Table, or (b) the deceased's remaining life expectancy on the Single Life Table reduced by one annually. The election must be made actively — it is not automatic in this scenario.

Key point: Under § 327 treatment, the account remains an inherited account. The 10% early withdrawal penalty still does not apply — you get Path 1's favorable RMD math while keeping Path 2's penalty exemption. You can also complete a spousal rollover at any time later.

Limitation: § 327 is only available if you are the sole beneficiary. If your spouse named multiple beneficiaries (you plus an adult child, for example), you don't qualify unless the account is split into separate inherited IRAs by September 30 of the year following death and you are the sole beneficiary of your separated share.

Path 4: The bridge strategy (stay inherited → rollover at 59½)

Keep the account as an inherited IRA now, take any penalty-free distributions you need, and complete the spousal rollover into your own IRA once you reach age 59½.

Why this works: There is no deadline on when a surviving spouse must complete a spousal rollover. You can keep the account as inherited for years, then roll it to your own IRA the day you turn 59½. From that point forward, it's treated as your own account — Uniform Lifetime Table RMDs, ability to make contributions if you have earned income, and unlimited rollover-amount creditor protection.

Who it's for: A surviving spouse under 59½ who needs or may need access to funds before that birthday, but doesn't want to permanently give up the long-term benefits of a spousal rollover. Take penalty-free distributions while you need them, then lock in the owner benefits when the penalty window closes.

The tradeoff: During the inherited phase, RMDs (if required) run on the Single Life Table rather than the Uniform Lifetime Table — meaning larger required withdrawals. If your spouse died before their required beginning date and you won't need distributions for years, the difference is small. If your spouse had already started RMDs, the Single Life Table gap compounds over time.

Summary comparison

The year-of-death RMD trap

If your spouse had already started taking RMDs — meaning they were past the required beginning date — you must ensure the year-of-death RMD is fully satisfied before completing any rollover.

Under IRC § 408(d)(3)(E), RMD amounts for the year of death are not eligible for rollover.⁵ The RMD for the year of death must be distributed to someone — either your spouse received it before death, or you take the remaining balance as the beneficiary. Only what remains after the full year-of-death RMD is satisfied can be rolled over.

This step is easy to overlook because the plan administrator does not always flag it proactively. If your spouse died in October and had already taken partial distributions that year, confirm in writing with the plan whether those distributions satisfy the full annual RMD before initiating any rollover. Rolling over an amount that includes the year-of-death RMD creates an excess contribution in the receiving IRA — a separate, costly problem to fix.

Roth conversion opportunity at the rollover moment

The year of a spouse's death is often an unusual income year. Partial-year household income, life insurance proceeds (generally income-tax-free), administrative costs, and the end of a spouse's wages or Social Security can leave the surviving spouse in a temporarily lower bracket than they'll be in during steady-state retirement.

If you complete a spousal rollover into a traditional IRA (Path 1) or elect the § 327 treatment (Path 3), you can then convert a portion of that IRA to Roth — locking in today's lower marginal rate on those dollars. Every dollar converted to Roth now is a dollar that never triggers RMDs, never inflates future Medicare IRMAA surcharges, and passes to your own beneficiaries income-tax-free. See our Roth conversion after rollover guide for the bracket-targeting framework.

After-tax basis and Form 8606

If your spouse made non-deductible IRA contributions over the years, their IRA carries a "basis" — money that was already taxed. When you roll over or inherit an IRA with basis, you need to track it on Form 8606 to avoid paying tax twice on the same dollars.

When you complete a spousal rollover of an inherited IRA with after-tax basis, you absorb the deceased's basis into your own IRA. You file Form 8606 carrying forward the basis amount. Custodians do not track this for you — the IRS expects you to maintain the complete basis history, and failing to do so means overpaying tax every time you take a distribution.

If you're inheriting a 401(k) that contains after-tax contributions, the plan administrator's final statement will show the after-tax basis amount. That basis carries over to the IRA on rollover. See our after-tax 401(k) split rollover guide for detail on basis tracking.

Interactive path selector: which option fits you?

Answer 5 questions to get a framework recommendation. This is not tax advice — use it as a starting point for your conversation with a qualified advisor.

When a specialist advisor makes the biggest difference

Inheriting a spouse's retirement account combines grief with a compressed financial decision timeline — and the choices made in the first few months are largely irreversible. Specific situations where professional guidance has a measurable dollar impact:

• Large accounts with Roth conversion potential. If the account is $500K+ and you're in a bracket trough the year of death, even one year of well-timed Roth conversion can mean $30,000–$80,000 less in lifetime taxes. The window is short.
• Under 59½ with uncertain future income. The bridge strategy's optimal exit point — when to complete the spousal rollover — depends on projecting your RMD schedule under both scenarios. The math is not intuitive.
• Multiple retirement accounts. If you're also managing your own 401k, IRA, and Social Security timing, the interactions between all of them — pro-rata rule, IRMAA cliff, QCD eligibility — require someone who can see the full picture at once.
• § 327 election mechanics. SECURE 2.0 § 327 proposed regulations are still being finalized. Making the election correctly — right documentation, right custodian communication, right timing — is not a form you fill in on your own.