🧾
✓ Editorially reviewed by Derek Giordano, Founder & Editor · BA Business Marketing

Inherited IRA RMD Calculator

Required distributions for beneficiaries under the final 2024 regulations

Updated October 2026

🧮
700+ calculators, no signup required
Finance · Health · Math · Science · Business
nnng.com
Most non-spouse heirs must empty an inherited IRA by December 31 of the tenth year after the death, and if the owner had already started RMDs they must also take an annual RMD in years 1 to 9. An adult child who was 50 in 2025 and inherited $300,000 (December 31, 2025 balance) from a parent who died in 2024 at 78 divides by 35.2 (36.2 from the Single Life Table, minus one year): 2026 RMD: $8,522.73; empty by Dec 31, 2034. Had the parent died before RMDs began, no annual RMD would be due, only the 2034 deadline.

Which Beneficiary Are You?

BeneficiaryPayout ruleAnnual RMDs?
Surviving spouseTreat the IRA as your own, or keep it inherited and stretch over your life expectancy (recalculated each year)Yes as a beneficiary; as owner, from your own RMD age
Other eligible designated beneficiary: minor child of the owner, disabled or chronically ill person, or anyone not more than 10 years younger than the ownerStretch over life expectancy; may elect the 10-year rule if the owner died before the required beginning dateYes (a minor child switches to a 10-year deadline at 21)
Designated beneficiary who is not eligible (most adult children, grandchildren, friends)10-year rule: empty by Dec 31 of the 10th year after deathOnly if the owner died on or after the required beginning date
Not an individual (estate, charity, most non-see-through trusts)5-year rule if the owner died before the required beginning date; owner’s remaining life expectancy if afterOnly in the second case

The owner’s required beginning date is April 1 of the year after they reach their RMD age (73 for people born 1951 to 1959). The beneficiary is fixed on September 30 of the year after the death, so disclaimers and cash-outs before then can change which rule applies.

How the Inherited IRA RMD Is Calculated

RMD = account balance on December 31 of last year ÷ divisor from the Single Life Table (Table I of Pub. 590-B, the table in Treas. Reg. 1.401(a)(9)-9(b)).

  1. Find your age at your birthday in the year after the death and look up Table I. In the default case the child is 50 in 2025: 36.2.
  2. Subtract 1 for each year after that first year. For 2026: 35.2. (A surviving spouse looks up a new factor at each year’s age instead.)
  3. If the owner died on or after their required beginning date, also find the owner’s Table I factor at their age in the year of death (78: 12.6) and subtract 1 for each year since (2026: 10.6). Use the longer of the two: 35.2.
  4. Divide: $300,000 ÷ 35.2 = $8,522.73.

The calculator reproduces both Pub. 590-B examples: an eligible beneficiary who is 57 in the first distribution year uses 29.8; a beneficiary whose father died in 2021 and who was 55 in 2022 uses 27.6 for 2026 (31.6 − 4).

The 10-year schedule for the default heir

Illustration only: it assumes the account earns 5% a year after each withdrawal. It starts from the $300,000 balance on December 31, 2025 (the 2025 RMD of 36.2 was already taken); the last year takes everything that is left.

YearDivisorBalance on Dec 31 of prior yearMinimum withdrawal
202635.2$300,000$8,523
202734.2$306,051$8,949
202833.2$311,957$9,396
202932.2$317,689$9,866
203031.2$323,214$10,359
203130.2$328,497$10,877
203229.2$333,501$11,421
203328.2$338,184$11,992
2034n/a (final year)$342,501$342,501

Taking only the minimum leaves most of the money for year 10, which can push that year’s income into a much higher bracket. Many heirs spread withdrawals more evenly; anything above the minimum is allowed but does not count toward later years.

Seven Beneficiaries, 2026 Results

Each starts from a $300,000 balance on December 31, 2025.

Beneficiary2026 divisor2026 RMDDeadline
Adult child, 50, inherits $300,000 from a parent who died in 2024 at 78 (default; 2026 RMD)35.2$8,522.73Dec 31, 2034
Same child, parent died in 2024 at 60 (before RMDs began)none$0Dec 31, 2034
Surviving spouse, 70 in 2025, owner died 2024 at 75, keeps it as inherited18.0$16,666.67Life expectancy
Disabled beneficiary, 40 in 2025, owner died 2024 at 7544.7$6,711.41Life expectancy
Minor child, 12 in 2025, owner died 2024 at 4571.9$4,172.46Life expectancy
Estate as beneficiary, owner died 2024 at 68none$0Dec 31, 2029
Brother 3 years younger (eligible), 75 in 2025, owner died 2024 at 7713.8$21,739.13Life expectancy

Rules, Deadlines and Penalties (Final Regulations)

Mistakes Heirs Make

What This Calculator Does Not Cover

It handles one beneficiary per account. Multiple beneficiaries who did not split the account by the end of the year after death, trusts, successor beneficiaries, inherited 401(k) plans with their own terms, the spouse election to be treated as the deceased owner, and owners who died before 2022 with the earlier tables (except the reset shown above) are not modeled. Taxes on the withdrawals are not estimated. For an estate or trust beneficiary, or a large account, an estate attorney or CPA familiar with the 2024 regulations should confirm the schedule.

Frequently Asked Questions

How is an inherited IRA RMD calculated?
Divide the account balance on December 31 of the prior year by your Single Life Table factor: your age in the year after the death, minus 1 for each later year. If the owner had started RMDs, use the longer of your factor and the owner’s remaining factor.
Do I have to take RMDs under the 10-year rule?
Only if the owner died on or after their required beginning date. Then annual RMDs are required in years 1 to 9 (from 2025), and the account must be empty by the end of year 10.
What happens if I missed an inherited IRA RMD in 2021-2024?
The IRS waived the excise tax for missed annual amounts under the 10-year rule for 2021 through 2024 (Notice 2024-35). The 10-year deadline itself did not change.
How do I calculate an inherited IRA RMD for 2026?
Use the December 31, 2025 balance and your 2026 divisor: the Table I factor at your age in the year after the death, minus the number of years since.
Is a surviving spouse subject to the 10-year rule?
No. A spouse can treat the IRA as their own or keep it as an inherited IRA and take life expectancy payments, recalculated each year.
What is the penalty for not taking an inherited IRA RMD?
A 25% excise tax on the shortfall, reduced to 10% if you take the missed amount and file Form 5329 within the correction window.
Does the 10-year rule apply to inherited Roth IRAs?
Yes, for non-eligible beneficiaries, but there are no annual RMDs within the 10 years because Roth owners have no RMDs.

How to Use This Calculator

  1. Enter the balance and the year — the inherited IRA balance on December 31 of last year (from the year-end statement) and the year you are figuring.
  2. Enter the dates and ages — the year the owner died, the owner’s age at their birthday that year, and your age at your birthday in the year after the death.
  3. Choose who you are — non-eligible designated beneficiary, eligible beneficiary, surviving spouse, minor child, or a non-individual such as an estate.
  4. Say whether the owner had started RMDs — whether they died on or after their required beginning date (April 1 after reaching RMD age).
  5. Read the result — the rule that applies, the divisor, this year’s RMD, the deadline to empty the account and the excise tax if you miss it.
📚 Sources & References
  1. [1] IRS. Publication 590-B for 2025, Distributions from IRAs: beneficiaries, 10-year rule, Appendix B Table I (accessed Oct 2026). www.irs.gov
  2. [2] Treasury and IRS. Required Minimum Distributions, final regulations, T.D. 10001, 89 FR 58886 (July 19, 2024). www.federalregister.gov
  3. [3] 26 CFR 1.401(a)(9)-9, Life expectancy and distribution period tables (accessed Oct 2026). www.law.cornell.edu
  4. [4] IRS. Notice 2024-35, relief for certain 2024 RMDs (April 2024). www.irs.gov
✅ Editorial Standards — Every calculator is built from peer-reviewed formulas and official data sources, editorially reviewed for accuracy, and updated regularly. Read our full methodology · About the author