A non-spouse beneficiary cannot convert an inherited traditional IRA to a Roth IRA. Section 408(d)(3)(C) of the Internal Revenue Code treats an inherited IRA as ineligible for rollover treatment, and a Roth conversion is a type of rollover.1Office of the Law Revision Counsel. 26 U.S. Code 408 – Individual Retirement Accounts There is one narrow exception: if the money you inherited is still sitting in a workplace plan like a 401(k), you can move it directly into an inherited Roth IRA before it ever becomes an inherited traditional IRA. Everything else about your situation is about managing distributions, not converting.
Why the Conversion Is Off the Table
The statute is explicit. An inherited IRA is not treated as an IRA for rollover purposes, and no amount transferred out of an inherited account into another IRA can be excluded from gross income.1Office of the Law Revision Counsel. 26 U.S. Code 408 – Individual Retirement Accounts That single provision closes the door on any strategy that involves paying tax now to lock in tax-free growth on inherited traditional IRA money.
The policy behind the rule is that Congress wants the deferred tax on a deceased owner’s traditional IRA collected within a defined window. A Roth conversion would let a non-spouse beneficiary pay tax upfront and then shelter the balance indefinitely, defeating the point of the required distribution rules. Spousal beneficiaries can sidestep this because they are allowed to treat the inherited IRA as their own account, which reopens the full menu of rollover and conversion options. Non-spouse beneficiaries do not have that choice.
The inherited account also has to stay segregated. You cannot combine it with your own retirement savings, and the account title generally carries the deceased owner’s name followed by “For Benefit Of” language identifying you. That titling tells the custodian and the IRS the money is inherited and subject to the special distribution rules.
The One Exception: Inherited Workplace Plans
If the deceased still had money in a qualified workplace plan such as a 401(k), 403(b), or governmental 457(b), a different section of the code applies. Section 402(c)(11) lets a non-spouse designated beneficiary do a direct trustee-to-trustee transfer from the plan into an inherited IRA.2Office of the Law Revision Counsel. 26 U.S. Code 402 – Taxability of Beneficiary of Employees Trust IRS guidance permits that direct rollover to land in an inherited Roth IRA. You pay income tax on the full transferred amount in the year of the rollover, and future qualified distributions come out tax-free.
Some caveats matter here. The resulting Roth account is still an inherited IRA, so the 10-year distribution deadline still applies. You do not get to hold the money forever. The full transferred amount hits your tax return as ordinary income in the rollover year, which can push you into a much higher bracket, so the math generally only works if you have cash outside the inheritance to pay the tax.
Timing is everything. This exception only applies while the assets remain inside the workplace plan. Once the money has been moved into an inherited traditional IRA, Section 408(d)(3)(C) locks it in and the door to a Roth rollover closes permanently. If a Roth rollover interests you, make the decision before touching the plan money.
Direct Transfer Only
Whether the destination is an inherited traditional IRA or an inherited Roth IRA, the transfer has to go directly from custodian to custodian. Non-spouse beneficiaries do not get the 60-day rollover window IRA owners normally have. If the plan cuts you a check, that distribution is taxable in the year you receive it and cannot be redeposited into an inherited IRA.1Office of the Law Revision Counsel. 26 U.S. Code 408 – Individual Retirement Accounts There is no way to unwind that mistake, so insist on a trustee-to-trustee transfer when setting up the destination account.
What You’re Actually Planning For
Since conversion is unavailable on an inherited traditional IRA, the real question is how to handle the 10-year distribution rule. If you inherited from someone who died after December 31, 2019, the entire account balance must be distributed by December 31 of the tenth year after the year of death.3Internal Revenue Service. Retirement Topics – Beneficiary An account inherited from a 2024 death must be empty by the end of 2034.
Within that decade you have some flexibility, but not as much as many beneficiaries initially believed. If the original owner died on or after their required beginning date (April 1 of the year after they turned 73 for owners born between 1951 and 1959, or 75 for owners born in 1960 or later), you also have to take annual required minimum distributions in years one through nine.4Congress.gov. Required Minimum Distribution (RMD) Rules for Original Owners Each yearly amount is calculated from the IRS Single Life Table using your age. Final Treasury regulations make these annual distributions mandatory for calendar years beginning on or after January 1, 2025, and skipping one now triggers a penalty.5Federal Register. Required Minimum Distributions
If the original owner died before their required beginning date, annual distributions are not required. You could wait until year ten and take the whole balance, though that approach creates a large tax spike.
Missing a required distribution costs 25% of the shortfall as an excise tax. That drops to 10% if you correct the mistake by the end of the second calendar year after the miss.6eCFR. 26 CFR 54.4974-1 – Excise Tax on Accumulations in Qualified Retirement Plans The same 25% penalty applies if any balance remains after the 10-year deadline.
Tax Treatment of What You Withdraw
Every dollar out of an inherited traditional IRA is ordinary income in the year you receive it. It stacks on top of your wages and other income and determines your marginal bracket. A large distribution can push you from the 22% bracket into the 32% or 35% bracket, so the size and timing of each withdrawal directly affects what you keep.
If the original owner made nondeductible contributions to the traditional IRA, that basis passes to you and a proportional share of each distribution comes out tax-free. Tracking it requires Form 8606, and the inherited basis stays separate from any basis in your own IRAs.
The 10% early withdrawal penalty does not apply to distributions from an inherited IRA regardless of your age.7Internal Revenue Service. Retirement Topics – Exceptions to Tax on Early Distributions The death of the original owner is a blanket exception.
Managing the Tax Hit Across the Decade
Since you cannot convert, the planning question is how to spread distributions across the 10-year window to keep the overall tax rate down. Roughly equal installments usually beat a lump sum at the end. Look at your projected income each year and pull more in the low-income years and less in the high-income ones. A year with a job transition, a sabbatical, or early retirement is often the right year to take a bigger distribution.
A few moves worth modeling with a tax professional:
- Bunching distributions in low-income years. Taking $50,000 when your other income is $30,000 keeps you well below the top brackets. Waiting until year ten with a $500,000 balance and a full salary does not.
- Pairing larger distributions with years you make significant charitable contributions, so itemized deductions offset part of the income.
- Filling up your current bracket before stopping. If you have room before the next bracket kicks in, use that space now rather than leaving a larger distribution for later.
The stakes are real. On a $500,000 inherited traditional IRA, the gap between a planned schedule and a last-minute lump sum can exceed $40,000 in additional federal income tax. A few hours of planning at the start of the 10-year window pays for itself many times over.