Inherited IRA RMD rules in 2026 do not give every beneficiary the same answer. For many non-spouse beneficiaries, the account must be emptied by the end of the 10th year after death. But whether you also need annual required minimum distributions (RMDs) during that 10-year window depends heavily on whether the original owner died before or after their required beginning date. Inherited Roth IRAs follow another important variation.
The practical problem is that people hear “10-year rule” and assume it means either “take 10 equal withdrawals” or “do nothing until year 10.” Neither is a universal IRS rule. The right sequence is: classify the beneficiary, identify the original owner’s RMD status at death, then identify the account type. Only after that should you calculate a minimum and decide how quickly to draw the account down.
For a typical non-spouse designated beneficiary who inherited after 2019, the inherited IRA generally must be fully distributed by December 31 of the year containing the 10th anniversary of the original owner’s death. If the owner died before the required beginning date, the 10-year rule generally does not require annual distributions before year 10. If the owner died on or after the required beginning date, annual beneficiary RMDs generally apply during the 10-year period as well. An inherited Roth IRA is treated as though the Roth owner died before the required beginning date, so a non-eligible designated beneficiary generally has the 10-year deadline without annual RMDs in years 1–9.
Key Takeaways Ahead
Inherited IRA RMD Rules in 2026: Start With 3 Questions
Before you calculate anything, answer these three questions. This is the part I would not skip. A perfectly calculated RMD using the wrong beneficiary rule is still the wrong answer.
| Question | Why it matters | What it can change |
|---|---|---|
| 1. Who inherited the account? | A spouse, eligible designated beneficiary, other individual beneficiary, estate, or certain trust can face different rules. | Whether life-expectancy payments, a spouse election, a 10-year rule, or another payout rule applies. |
| 2. Had the original owner reached the required beginning date? | For many non-spouse beneficiaries, this determines whether annual RMDs continue during the 10-year window. | Annual years 1–9 RMDs versus a year-10-only distribution deadline. |
| 3. Is it a traditional IRA or Roth IRA? | Roth IRA owners have no lifetime RMD required beginning date. | For many inherited Roth IRAs, no annual RMDs are required in years 1–9 even though the account still has a 10-year deadline. |
The IRS Publication 590-B beneficiary rules are the controlling starting point for those distinctions. If the owner died in 2026 and the 10-year rule applies, the final deadline is generally December 31, 2036.
Did the Owner Die Before or After RMDs Had Started?
This is the branch that creates the most confusion.
If the owner died before the required beginning date
For a non-spouse designated beneficiary who is not an eligible designated beneficiary, the 10-year rule generally applies. The account must be emptied by the end of year 10, but the IRS says no distribution is required in years 1–9 when the owner died before the required beginning date and the 10-year rule applies.
That does not mean waiting until year 10 is automatically smart. It simply means the IRS is giving you timing flexibility. Your tax bracket, other income, college-aid years, Medicare exposure, planned retirement date, and the size of the inherited IRA can all affect when voluntary withdrawals make sense.
If the owner died on or after the required beginning date
For a non-spouse designated beneficiary who is not an eligible designated beneficiary, two requirements generally operate together: annual beneficiary RMDs and the 10-year empty-account deadline. The annual RMD does not replace the 10-year rule. And the 10-year rule does not erase the annual RMD.
“I took the RMD” is not the same as “I am on pace to empty the inherited IRA.” Life-expectancy RMDs can leave a substantial balance for year 10. Treat the annual RMD as the floor when it applies, then separately model the 10-year tax plan.
Do not forget the original owner’s year-of-death RMD
If the original owner was required to take an RMD for the year of death and had not withdrawn the full amount before dying, the remaining year-of-death RMD still has to be satisfied. The IRS treats that separately from the beneficiary’s own RMD schedule for later years. That distinction matters when someone dies late in the year and the family is focused on beneficiary paperwork rather than the distribution calendar.
The IRS RMD guidance for deaths and beneficiaries is the best place to confirm the current rule before moving money.
How to Calculate an Inherited IRA RMD in 2026
If an annual inherited IRA RMD applies, the calculation starts with the prior December 31 account balance and the applicable life-expectancy factor. For many non-spouse individual beneficiaries, the IRS Single Life Expectancy Table is part of that calculation. The correct factor depends on the beneficiary rule that applies to you; do not grab the Uniform Lifetime Table used by original IRA owners and assume it works for an inherited account.
A useful way to think about the calculation is:
Prior December 31 inherited IRA balance ÷ applicable IRS life-expectancy factor = that year’s RMD
The hard part is usually not division. It is confirming that you are using the right beneficiary rule and factor.
If you inherited more than one IRA, do not assume you can satisfy every RMD from whichever account is convenient. The aggregation rules are different for inherited accounts, and accounts inherited from different people cannot simply be mixed together. My separate guide to RMD aggregation rules owns that question.
Use the Existing RMD Estimator Carefully
The estimator below is a protected existing MRM tool. It is useful for orienting yourself to RMD calculations, but inherited accounts can require a different table and beneficiary logic than an original owner’s IRA. If the tool flags an inherited or spousal situation, use that as a signal to verify the beneficiary rule rather than treating an original-owner estimate as your final inherited-IRA number.
RMD Estimator for the 2026 Tax Year
Estimate your 2026 owner RMD across one or more Traditional, SEP, or SIMPLE IRAs using December 31, 2025 balances.
2026 RMD Estimation Record
| IRA | Type | 2025 balance | 2026 RMD calculation |
|---|
Calculation basis
Deadline and aggregation notes
2027 age-factor comparison
Related planning tools
For an inherited IRA, confirm the account title, the original owner’s date of death and RMD status, your beneficiary classification, and the prior year-end balance before relying on any calculator result.
The number I care about first is not the calculator result. It is the rule that produced the calculator result. In inherited-IRA planning, one wrong branch in the decision tree can make a very precise-looking answer useless.
Inherited IRA rules are a good example of why retirement planning gets expensive when you rely on an old article, an old calculator, or a remembered rule. I track the changes that actually alter a retirement decision so you do not have to rebuild the whole rulebook every time.
- Know when an RMD rule actually changed.
- Catch deadlines before they become tax problems.
- See the planning consequence, not just the new number.
Spouses and Eligible Designated Beneficiaries Have Different Options
The 10-year framework above is not the whole story for every beneficiary. The IRS defines a group of eligible designated beneficiaries that generally includes a surviving spouse, the owner’s minor child, a disabled individual, a chronically ill individual, and an individual who is not more than 10 years younger than the owner.
Spouses have especially important choices. A surviving spouse may be able to treat an inherited traditional IRA as their own, roll eligible amounts into their own IRA, or remain a beneficiary. Those choices can change the RMD timetable and access rules, so a spouse should not automatically move the account before comparing the consequences.
The IRS beneficiary guidance summarizes the beneficiary categories, while Publication 590-B gives the more detailed IRA rules.
A non-spouse beneficiary cannot roll the inherited IRA into their own IRA
If you inherited a traditional IRA from someone other than your spouse, the IRS says you cannot treat that inherited IRA as your own and cannot roll amounts into or out of it. You can generally make a trustee-to-trustee transfer to another properly titled inherited IRA for the same decedent and beneficiary. That is a transfer of the inherited account—not a rollover into your personal IRA.
Inherited Roth IRA RMD Rules: A Different 10-Year Pattern
Inherited Roth IRAs are a common source of contradictory advice because beneficiaries hear that “Roth IRAs do not have RMDs” and then hear that inherited Roth IRAs do.
Both statements need context. The original Roth IRA owner has no lifetime RMD. After the owner dies, beneficiary distribution rules apply. Publication 590-B says the Roth owner is treated as having died before the required beginning date. For a non-spouse designated beneficiary who is not an eligible designated beneficiary, that generally means the inherited Roth IRA must be emptied by the end of year 10, but annual distributions are not required in years 1–9 under the 10-year rule.
Traditional inherited IRA: ask whether the owner died before or after the required beginning date. Inherited Roth IRA: the owner is treated as dying before the required beginning date for beneficiary RMD purposes. That one distinction prevents a lot of bad annual-RMD advice.
What If You Miss an Inherited IRA RMD?
If you were required to take an inherited IRA RMD and did not take enough, the current Form 5329 rules generally impose a 25% excise tax on the shortfall. The rate can be reduced to 10% when the correction-window requirements are satisfied, and the IRS can waive the tax for reasonable cause when the Form 5329 requirements are met.
The IRS Instructions for Form 5329 explain the current penalty, correction window, and reasonable-cause waiver procedure. If you already missed a distribution, fix the distribution issue first and then determine which tax-year Form 5329 is required. My separate guide on missing the RMD deadline walks through the correction process in more detail.
The IRS transition-relief notice extended relief for certain beneficiaries who did not take specified annual inherited-account RMDs through 2024 while regulations were being finalized. Do not carry that relief forward as a permanent “no annual RMD” rule. The post-SECURE beneficiary framework now needs to be applied to the actual facts of the inheritance.
The Minimum RMD Is Not Your 10-Year Withdrawal Plan
This is the planning distinction I wish more inherited-IRA discussions made explicit. The IRS tells you the minimum you must distribute. It does not optimize your 10-year tax bill for you.
I have seen inherited-IRA decisions become much harder when the beneficiary focuses only on this year’s minimum and ignores the balance that could still be sitting there near year 10. The useful question is not “How little can I take?” It is “What withdrawal path gives me the best chance of meeting the deadline without creating an avoidable income pileup later?”
That does not mean dividing the account by 10 is automatically optimal either. A stronger annual review asks:
- What annual RMD is legally required this year, if any?
- What is my projected taxable income before an inherited-IRA distribution?
- Are there unusually low-income years inside the 10-year window?
- Could a large later withdrawal affect Medicare IRMAA, capital gains, deductions, credits, or state taxes?
- How much account balance is likely to remain if I take only the minimum?
- Would taking more now reduce the risk of a much larger year-10 distribution?
Once the required distribution is satisfied, what you do with money you do not need for spending is a separate decision. See what to do with RMD proceeds for the spending, saving, gifting, and reinvestment side of the problem.
Bottom Line: Identify the Rule Before You Optimize the Withdrawal
Inherited IRA planning gets easier once you stop treating “the 10-year rule” as a complete answer. First identify the beneficiary type. Then determine whether the original owner died before or after the required beginning date. Then separate traditional IRA rules from inherited Roth IRA rules. Only after those questions are settled should you calculate the RMD and decide whether taking more than the minimum improves the 10-year tax plan.
That order matters. The tax code is complicated enough without doing perfect math on the wrong rule.
