Can I name my spouse as successor beneficiary of an inherited IRA?

Generally, if the IRA agreement permits beneficiary designations, you can name a spouse or another person as successor. But the spouse is receiving your inherited interest, not inheriting directly from the original owner as that owner’s surviving spouse. The special spousal rollover rules therefore do not automatically apply merely because your successor happens to be married to you.

What happens if I never name a successor beneficiary?

The IRA agreement’s default-beneficiary clause and applicable state law determine who receives the remaining interest. Depending on the contract, that might be your estate, spouse, descendants, or another class. A default can create probate or administrative delay and may conflict with your estate plan. Read the actual inherited-account agreement rather than assuming a universal default.

Does my successor get a new 10-year period?

Not automatically. Publication 590-B says successors generally continue the deceased beneficiary’s required distributions, and the remaining balance can be subject to a successor 10-year rule or an original-owner deadline that is already running. The exact endpoint depends on how the first beneficiary was classified and which 10-year rule already applied.

Can I name a trust as successor beneficiary?

Usually the custodian can accept a trust if its beneficiary procedures permit it, but acceptance does not guarantee favorable tax treatment. The trust will receive an account with an existing inherited-IRA history and RMD schedule. Counsel should review the trust terms, tax identification, successor deadline, and state-law purpose before the designation is filed.

Should I keep proof that the custodian accepted my form?

Yes. Save the confirmation, beneficiary summary, or stamped form for the specific inherited IRA. A signed form that was never delivered or accepted can create a dispute. Also keep the original owner’s date of death and your RMD records so the successor knows which federal deadline remains in force rather than trying to reconstruct it after your death.

How to Name a Successor Beneficiary on an Inherited IRA

If your inherited IRA custodian allows beneficiary designations, you should usually file a successor-beneficiary form rather than assume your spouse, children, or will control the account automatically. The successor designation determines who receives your remaining inherited interest when you die, subject to the IRA agreement and applicable law.

The tax rule is separate: your successor generally does not receive a fresh life expectancy or automatically restart the original owner’s 10-year period. IRS Publication 590-B says beneficiaries of a deceased beneficiary generally continue required distributions and must empty the remaining interest within the applicable successor 10-year period or, in some cases, the original owner’s still-running 10-year period.

Successor beneficiary is an administrative designation first

Federal tax law tells the successor how post-death RMDs work, but it generally does not prescribe one universal custodian form for naming that person. The inherited IRA agreement controls how a current beneficiary files primary and contingent beneficiary designations. Some institutions permit an online change; others require a signed form, medallion signature guarantee, spousal acknowledgment in limited settings, or trust certification.

Ask for the form specifically for the inherited IRA. Do not assume a beneficiary form on your personal IRA automatically covers an inherited account held under a different registration.

There is no universal “default spouse” for an inherited IRA

An original IRA agreement may contain default beneficiary provisions when the owner leaves no valid designation, and state law can affect those provisions. An inherited IRA is still governed by its own contract. The current beneficiary’s spouse does not become the federal successor merely because the beneficiary is married.

If no successor designation is on file, the agreement might pay the beneficiary’s estate, surviving spouse, descendants, or another default class. Those defaults vary by institution and product. Read the actual agreement instead of relying on the default beneficiary language from a different IRA provider.

The successor inherits the remaining tax timetable, not a new account history

Publication 590-B states that when a beneficiary dies, that beneficiary’s successors generally continue required minimum distributions rather than recalculating using their own life expectancy. The remaining account is also subject to a 10-year completion rule after the deceased beneficiary’s death in applicable cases, or can remain constrained by the original owner’s 10-year deadline.

This means beneficiary paperwork changes who owns the remaining interest; it does not erase the original owner’s date of death or the RMD history. See what happens when a beneficiary dies during the 10-year period for the consequence analysis.

Example: beneficiary dies in year 6

Assume Marcus inherited a traditional IRA from his father, who died in 2026, and Marcus is subject to a December 31, 2036 terminal deadline. Marcus names his sister Lena as successor beneficiary and dies in 2032 with $150,000 remaining. Lena receives the successor inherited interest under the custodian designation.

Lena should not assume she now has until 2042 solely because Marcus died in 2032. Depending on the statutory successor rule and how Marcus was classified, the original 2036 endpoint can continue to control. The key practical value of the successor form is avoiding ambiguity over who receives the account, not manufacturing a new distribution period.

Name contingent successors as well as a primary successor

If the custodian permits it, list a primary successor and contingent successors, and specify percentages that total 100%. Contingents matter if the primary successor dies first, disclaims, or cannot receive the account. Trust and estate beneficiaries should be identified using the custodian’s legal-name and tax-identification requirements.

Beneficiary designations should also be coordinated with the estate plan. A will ordinarily cannot rewrite a valid contractual IRA beneficiary designation after death, although state law and the account agreement can govern defaults when no valid designation survives.

Keep the inherited title intact after the successor takes over

IRS reporting instructions require an inherited IRA to continue identifying the decedent. The custodian may add the deceased beneficiary and successor to its administrative title, but the account must not be silently converted into the successor’s own IRA when federal law does not permit that treatment.

For title mechanics, see how a non-spouse inherited IRA should be titled and the inherited IRA titling mistakes checklist.

A trust successor needs extra review

Naming a trust as successor can be appropriate for minors, disability planning, creditor protection, or controlled management, but the inherited IRA already has a post-death RMD history. A trust designation cannot retroactively convert the original beneficiary into an eligible designated beneficiary or restart a closed election period.

If a trust will be successor, have counsel review trust validity, beneficiary provisions, tax identification, and how the existing RMD endpoint applies. A custodian accepting the beneficiary form is not a tax ruling on the trust.

Review successor forms after life events

Divorce, remarriage, a successor’s death, birth of children, trust amendment, or relocation can make an old designation inconsistent with the current estate plan. Because inherited IRAs may remain open for up to a decade or longer under some EDB rules, stale successor designations are not rare.

Schedule a beneficiary review at least after major life events and retain the custodian’s confirmation page or stamped form. The relevant evidence at death is what the institution actually had on file, not an unsigned copy in a home folder.

Process checklist

Ask the inherited IRA custodian for its current beneficiary-designation procedure and default-beneficiary clause.
List primary and contingent successors with exact legal names and percentages.
If a trust is named, use the trust’s correct legal name/date and provide requested certification.
Keep written confirmation that the designation was accepted on the specific inherited IRA.
Review the designation after marriage, divorce, death, birth, or trust amendment.
Leave a copy of the original owner’s death date and current RMD deadline with estate records so the successor can continue the correct schedule.

Successor paperwork should preserve both ownership evidence and the inherited timeline

When you file a successor-beneficiary form, keep a complete copy and the custodian’s acceptance confirmation. The form is not just estate-planning housekeeping. Years later, the successor may need to prove why they received the account, whose death started the original timetable, and whether the predecessor beneficiary was already operating under a 10-year rule or a life-expectancy rule. Those facts can change the successor’s distribution deadline.

Ask the custodian whether percentage allocations must equal 100%, whether per-stirpes language is available, and how it handles a successor who dies before you. If you name a trust, use the trust’s exact legal name and date and ask what certification will be required after death. Do not assume that naming “my trust” on a web form is sufficient if multiple trusts or amendments exist.

Review the form after marriage, divorce, birth or death of a named successor, a trust amendment, or a transfer to a new custodian. A trustee-to-trustee transfer of the inherited IRA does not automatically guarantee that every beneficiary designation on the old platform migrates to the new one. Confirm the successor designations again after the receiving account is established.

The tax records should travel with the account too. Keep the original owner’s death date, the predecessor beneficiary’s status, prior RMD calculations, year-end balances, and any Form 8606 basis records. A successor who receives only a current statement with no history can miscalculate both taxable income and the remaining deadline.

Do not assume the successor receives a fresh 10 years

The successor’s deadline depends on the predecessor beneficiary’s status and the distribution regime already running. If the predecessor was already subject to a 10-year deadline, the successor can remain bound by the original endpoint rather than receiving ten new years. If the predecessor was an eligible designated beneficiary using life expectancy, a successor can face a new 10-year rule after the predecessor’s death, subject to the final regulations.

That is why the successor form and the tax-history file belong together. Give your executor or trustee instructions on where both are stored. A custodian can identify who receives the account, but it may not know enough historical facts to determine the correct remaining RMD schedule without documentation.

Practical note: If percentages are unequal, verify the custodian accepts the allocation and that contingent designations work the way you intend if one successor predeceases you. Avoid handwritten assumptions such as “divide among my children” when the form offers specific per-stirpes or per-capita choices. Clear beneficiary paperwork reduces the chance that the inherited IRA falls to an estate default and creates a second layer of administration.

After filing, download the confirmation page or letter. An unsigned draft saved in an online profile is not the same as a designation accepted by the custodian.

This is general information, not personalized tax or legal advice — a CPA or estate attorney can confirm how this applies to your specific inherited account.