Inherited IRA Rules 2026: The 10-Year Rule, Annual RMDs, and How to Plan Your Distributions

Inheriting a large IRA looks like a windfall — and it is. But without a distribution plan, a $500,000 inherited IRA can trigger $130,000–$200,000 in unnecessary taxes. The 2024 final regulations (T.D. 10001) added mandatory annual RMDs to the mix starting 2025. This guide explains exactly what you owe, when you owe it, and how to minimize the tax cost over the 10-year window.

What Type of Beneficiary Are You?

Your options depend entirely on your relationship to the deceased and whether you qualify for an exception to the standard 10-year rule. There are three tiers:

1. Surviving Spouse

The most flexible option. You can:

Roll it into your own IRA. The account becomes yours. No inherited-IRA rules apply; you take RMDs at your own RMD age (73 if born 1951–1959; 75 if born 1960+) using the Uniform Lifetime Table.
Keep it as an inherited IRA. Useful if you're under 59½ — inherited IRA distributions avoid the 10% early withdrawal penalty, while your own IRA would not.
Treat it as your own IRA (elective). Similar to rollover but done via election rather than actual rollover. Same result.

If you roll into your own IRA, you avoid the 10-year rule entirely and gain full stretch treatment. For most spouses, this is the optimal choice once you're past 59½.

2. Eligible Designated Beneficiary (EDB) — Stretch Treatment

Five categories qualify for stretch treatment, meaning you can spread distributions over your own remaining life expectancy rather than being forced into the 10-year window:¹

Surviving spouse (discussed above)
Minor child of the decedent — stretch applies until the child reaches the age of majority (21, or 26 if still in school per state law), then the 10-year clock starts
Disabled individual — per IRC § 72(m)(7) definition; documentation required
Chronically ill individual — per IRC § 7702B(c)(2) definition
Individual not more than 10 years younger than the decedent — a sibling close in age often qualifies here

If you're an EDB, you use the Single Life Expectancy Table (IRS Pub. 590-B, Table I) starting from the year after death, reducing the factor by 1 each year — a true stretch. This page's calculator focuses on the non-EDB case, which applies to the majority of adult children and other beneficiaries.

3. Non-Eligible Designated Beneficiary (Non-EDB)

This is the most common scenario for adult children inheriting a parent's IRA. You are subject to the 10-year rule: the account must be fully emptied by December 31 of the year that is 10 years after the year of the owner's death. Whether you also owe annual RMDs in years 1–9 depends on when the original owner died — explained next.

The 10-Year Rule: Two Different Sets of Rules

T.D. 10001 (finalized July 2024) settled the question that had been under dispute since SECURE Act 1.0 passed in 2019. The IRS's answer: whether annual RMDs are required in years 1–9 of your 10-year window depends entirely on whether the original owner had passed their Required Beginning Date (RBD) when they died.²

Required Beginning Date (RBD): April 1 of the year after the year the account owner reached their RMD age — age 73 for those born 1951–1959, age 75 for those born 1960+ (SECURE 2.0, IRC § 401(a)(9)(C)).

Scenario A: Decedent Died Before Their RBD

No annual RMDs required in years 1–9. You can take distributions in any amount, in any year, as long as the account is fully emptied by December 31 of year 10. You could take zero in years 1–9 and the full balance (including 10 years of growth) in year 10 — or spread it however you want.

This applies to: an owner who died before their RBD (e.g., a 68-year-old who hadn't yet reached RMD age). Also applies to all inherited Roth IRAs — Roth IRAs have no owner lifetime RMD requirement, so the owner is always treated as having died before their RBD for Roth purposes.

Scenario B: Decedent Died On or After Their RBD

Annual RMDs are required in years 1 through 9. This was the surprise in T.D. 10001. The IRS clarified that when the decedent had already reached their RBD, non-EDB beneficiaries must take distributions in each of years 1–9, calculated using the Single Life Expectancy Table (Table I, Pub. 590-B).²

How to calculate your annual RMD:

Find your age at the end of Year 1 (the year after the death year) in IRS Pub. 590-B, Table I
Divide the account's December 31 prior-year balance by that factor
Each subsequent year, reduce the divisor by 1
Year 10: distribute the entire remaining balance regardless of divisor

Penalty for missing a required RMD: 25% excise tax on the amount you should have taken (reduced to 10% if corrected within two years). The four-year penalty waiver series covering 2021–2024 has ended; 2025 and forward are fully enforced.³

Inherited Roth IRA: Best-Case Rules

An inherited Roth IRA is still subject to the 10-year rule for non-EDB beneficiaries — but no annual RMDs are required in years 1–9 regardless of when the original owner died. This is because Roth IRA owners never have a Required Beginning Date (no lifetime RMDs apply to Roth IRAs under IRC § 408A(c)(5)). The result: you get the maximum flexibility — let the inherited Roth grow for 10 years completely tax-free, then take the entire balance in year 10 with no federal tax.

If you inherited a large Roth and a large traditional IRA from the same person, coordinate your strategy across both accounts. The traditional IRA distributions are taxable; the Roth distributions aren't. Front-load the taxable traditional distributions in lower-income years; defer the Roth to year 10.

Interactive Inherited IRA Distribution Planner

Enter your situation below to see a year-by-year distribution schedule, estimated federal tax in each year, and your 10-year total tax bill. For Scenario B (annual RMDs required), the calculator uses the IRS Single Life Expectancy Table (Pub. 590-B, Table I, effective 2022 per T.D. 9930).

Distribution scenario

Inherited IRA balance at December 31 of year of death ($)
This is the starting balance for your 10-year clock. Use the account's December 31 value in the death year.

Your age at December 31 of the year of death
Used to look up your Year 1 life expectancy factor from IRS Table I. Year 1 = year after death.

Expected annual account return (%)
Projected investment return inside the inherited IRA. Conservative: 5%. Moderate: 7%. Aggressive: 9%.

Filing status

Your other ordinary income in each year ($)
Wages, pension, Social Security, Roth conversions, etc. Estimated federal tax uses this as the base income stacked below the inherited IRA distribution.

Tax Planning Strategies for Large Inherited IRAs

1. Spread distributions to avoid bracket stacking

For non-EDB beneficiaries with no annual RMD requirement (Scenario A), the worst plan is taking nothing for 9 years then dumping the full grown balance in year 10. A $500,000 inherited IRA growing at 6% becomes $895,000 in year 10 — if all taken in one year and your other income is $100,000, the total $995,000 income hits 37% on most of the distribution. Spreading equal distributions across years 1–10 keeps you in the 22%–24% bracket. The year-10 lump-sum approach can easily cost $60,000–$100,000 more in federal tax than a spread strategy.

For Scenario B (annual RMDs required), the IRS has pre-set your minimum — but you can always take more than the minimum in any year if your bracket allows it. Taking a bit extra in low-income years and less in high-income years can smooth your tax curve.

2. Coordinate with your Roth conversion strategy

Inherited IRA distributions and Roth conversions from your own IRA compete for the same bracket space. If you're planning a Roth conversion program during the same 10-year window, don't run both at full speed simultaneously — the combined income can push you into the 32%–35% bracket and trigger IRMAA. Instead, in years when your inherited IRA RMD is large, dial back or skip Roth conversions. In years when the RMD is small (especially early years when the factor is large), you may have room to do both.

3. Watch the IRMAA two-year lookback

Medicare IRMAA uses income from two years prior. If you're 61 today and will turn 63 in two years, large inherited IRA distributions this year show up in your Medicare cost at 65. The first IRMAA tier at $109,000 single / $218,000 MFJ adds $974/year per person in Part B + Part D surcharges; the top tier adds up to $5,754/year per person.⁴ This is worth modeling explicitly in the 3–5 years before you enroll in Medicare. See the IRMAA planning guide for tier-by-tier numbers.

4. Consider a Qualified Charitable Distribution (QCD) workaround — carefully

QCDs are available from your own IRA once you're 70½ — not from an inherited IRA. There is no QCD workaround for inherited IRA distributions. However, if you're charitably inclined, you can take the inherited IRA distribution (pay the tax), and then donate appreciated securities from a taxable account to a donor advised fund. The donation offsets the taxable income from the inherited IRA distribution. It's a two-step maneuver, not a direct QCD, but it achieves similar net tax. See the charitable giving guide for DAF mechanics.

5. State tax planning: timing around residency changes

If you're considering a move from a high-tax state (California 13.3%, New York 10.9%, New Jersey 10.75%) to a no-income-tax state, inherited IRA distributions taken after you've established domicile in the new state are taxed only federally. A $200,000 distribution saves $20,000–$26,000 in state tax if you've successfully moved. The key word is "established" — California and New York aggressively audit departed residents; you need genuine domicile, not just an address change. See the state tax planning guide for domicile rules.

Spousal Rollover: The Underused Option

If you're the surviving spouse and your primary concern is flexibility, roll the inherited IRA into your own IRA as soon as you're past 59½. This eliminates the 10-year rule, restores full stretch treatment using your own life expectancy, and lets the account grow on your timeline. The one caution: if you roll it in before 59½ and then need the money, your own IRA's 10% early withdrawal penalty applies. If you're under 59½ and may need distributions, keep it as an inherited IRA temporarily — then roll when you reach 59½.

For a detailed analysis of how inherited IRA distributions interact with your broader estate plan, working with a fee-only advisor who understands the 10-year rule dynamics, IRMAA, and Roth conversion sequencing is high-leverage work — small planning decisions here can be worth $50,000–$100,000 in tax savings over the distribution window.

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Sources

IRS SECURE 2.0 / SECURE Act: IRC § 401(a)(9)(E)(ii) — definition of eligible designated beneficiary, five categories. IRS Publication 590-B (2025): irs.gov/publications/p590b
T.D. 10001 (July 2024) — Final regulations under IRC § 401(a)(9) clarifying that non-EDB beneficiaries must take annual RMDs in years 1–9 when the decedent died on or after their Required Beginning Date. federalregister.gov
IRC § 4974(a), as amended by SECURE 2.0: 25% excise tax on missed RMDs; reduced to 10% if corrected within 2 years. IRS notice confirming end of waiver period. irs.gov — RMD for IRA beneficiaries
CMS 2026 Medicare Parts B and D IRMAA fact sheet: first-tier threshold $109,000 single / $218,000 MFJ; top-tier surcharge up to $443.90/month per person for Part B. CMS.gov IRMAA 2026
IRS Publication 590-B (2025), Appendix B, Table I — Single Life Expectancy Table, effective 2022 per T.D. 9930 and Treas. Reg. § 1.401(a)(9)-9. irs.gov/pub/irs-pdf/p590b.pdf
IRS Revenue Procedure 2025-32: 2026 ordinary income tax brackets and standard deduction amounts. irs.gov Rev. Proc. 2025-32

Tax values verified as of May 2026. IRC § 401(a)(9) inherited IRA rules, SLE table factors, and penalty rates unchanged by OBBBA (P.L. 119-21). 2026 IRMAA thresholds per CMS 2026 fact sheet. Ordinary income brackets per IRS Rev. Proc. 2025-32.

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