Inherited IRA 10-Year Rule: How Non-Spouse Beneficiaries Avoid the 25% Penalty

You inherit a $500,000 traditional IRA from your father in 2026. You assume you can leave it alone, let it grow, and figure out what to do later. Ten years pass. You take the entire balance in a single tax year. Combined with your salary, that distribution pushes you into the top federal bracket. Add state income tax. You just handed roughly 40 percent of your father's lifetime savings to the government — money that proper planning would have cut dramatically.

This is the trap the SECURE Act set when it killed the "stretch IRA" in 2019. For most non-spouse beneficiaries, the rules changed completely, and the IRS finalized the details in 2024 with annual distribution requirements kicking in starting January 1, 2025. The penalty for missing a required minimum distribution is now a 25 percent excise tax on the shortfall — not the old 50 percent, but still painful.

If you inherited an IRA recently or expect to, here is what the rules require, who is exempt, and how to plan distributions so the IRS does not get the largest share.

What the SECURE Act Actually Changed

Before 2020, an adult child or other non-spouse beneficiary could "stretch" required minimum distributions over their own life expectancy. A 45-year-old daughter inheriting her mother's IRA might take small RMDs for 40 years, letting most of the account compound tax-deferred for decades.

That ended for deaths occurring after December 31, 2019. The SECURE Act of 2019 replaced the stretch with a 10-year rule for most non-spouse beneficiaries: the entire inherited IRA must be distributed by the end of the 10th year following the year the original owner died.

If your relative dies in May 2026, the inherited IRA must be empty by December 31, 2036. That gives you 10 calendar years plus the partial year of death — but the clock starts ticking the moment the owner passes.

The change applies to traditional IRAs, Roth IRAs, SEP-IRAs, SIMPLE IRAs, and most inherited 401(k) accounts. Roth inherited accounts are still subject to the 10-year deadline, but distributions remain income-tax-free since contributions were already taxed.

The Two Versions of the 10-Year Rule

When the IRS proposed regulations in 2022, they surprised practitioners by stating that some beneficiaries also have to take annual RMDs during years 1 through 9 — not just empty the account by year 10. After waiving the requirement for tax years 2021 through 2024, the IRS finalized the rules in July 2024. Annual RMDs are now mandatory starting with the 2025 distribution year for affected beneficiaries.

Whether you owe annual RMDs depends entirely on whether the original owner had reached their required beginning date (RBD) before dying.

Owner Died Before Their Required Beginning Date

The required beginning date is generally April 1 of the year after the owner turns 73 (under SECURE 2.0 rules). If the original owner died before reaching that age, you have flexibility:

• No annual RMDs required during years 1 through 9
• The full balance must still be distributed by December 31 of the 10th year
• You can withdraw any amount, in any year, as long as the account is empty by the deadline

This is the planning-friendly version. You can defer entirely if you prefer, accelerate during low-income years, or smooth distributions across the decade.

Owner Died On or After Their Required Beginning Date

If the original owner had already started taking RMDs before death, the rules tighten:

• Annual RMDs are required during years 1 through 9, calculated using the beneficiary's single life expectancy
• The full balance still must be distributed by year 10
• Missing an annual RMD triggers the 25 percent excise tax (reducible to 10 percent with timely correction)

Most retirees who lived past 73 will fall into this category. Their beneficiaries cannot simply wait until year 10 — they must take something every year.

The 25 Percent Penalty You Want to Avoid

SECURE 2.0 cut the missed-RMD penalty from 50 percent to 25 percent, and to 10 percent if you correct the shortfall within a "correction window" (generally two years). That sounds like a tax cut, but the IRS waived the penalty entirely for inherited IRA beneficiaries during 2021 through 2024 while finalizing regulations.

That grace period is over. Starting with the 2025 distribution year, missed annual RMDs from inherited accounts trigger the full excise tax on the amount you should have withdrawn but did not.

If your required RMD was $20,000 and you took zero, the penalty is $5,000 — on top of having to take the missed amount in a later year and pay regular income tax on it. The penalty applies separately each year you miss, and it does not reduce the amount that must come out by year 10.

Eligible Designated Beneficiaries: Who Escapes the 10-Year Rule

The SECURE Act preserved the old stretch treatment for a narrow group called Eligible Designated Beneficiaries (EDBs). If you fit one of these categories, you can still take RMDs over your single life expectancy:

1. Surviving spouses — also have additional options to roll the IRA into their own account or treat it as their own
2. Minor children of the deceased owner — only the owner's own child qualifies, not grandchildren or other minor relatives. Once the child reaches age 21, the 10-year rule begins
3. Disabled individuals under the IRS definition (substantial gainful activity test from Social Security rules)
4. Chronically ill individuals as defined under the long-term care insurance rules
5. Individuals not more than 10 years younger than the deceased — typically siblings, partners, or close-in-age relatives

EDB status is determined at the date of death and locked in. A disabled beneficiary who later recovers still keeps EDB treatment. If multiple beneficiaries are named and any are non-EDBs, the trust or splitting rules can become complex — separate accounts must usually be established by September 30 of the year after death to preserve EDB treatment for those who qualify.

Common Mistakes That Cost Beneficiaries Real Money

Inherited IRA mistakes are usually quiet — they do not show up until tax time, sometimes years later. Watch for these.

Mistake 1: Rolling the Inherited IRA Into Your Own

Only a spouse can do this. A non-spouse beneficiary who deposits inherited funds into their own IRA accidentally triggers a full taxable distribution of the entire balance in that year. There is no fix. The custodian's mistake is your tax problem.

The inherited account must keep the deceased owner's name in the title (e.g., "John Smith, deceased, IRA FBO Jane Smith, beneficiary"). It cannot be combined with any of your other retirement accounts.

Mistake 2: Waiting Until Year 10

Deferring most withdrawals until the final year is the most expensive mistake we see. A $500,000 balance taken in a single year, layered on top of normal salary, can push a beneficiary into the 32, 35, or 37 percent federal bracket — plus state tax, plus phaseouts of credits and deductions, plus potentially the 3.8 percent Net Investment Income Tax surcharge on other income.

Spreading the same $500,000 evenly over 10 years at, say, $50,000 per year keeps most beneficiaries in the 22 to 24 percent range. That difference can easily be $50,000 to $100,000 in lifetime tax savings on a single account.

Mistake 3: Ignoring Roth Conversion Opportunities

If the original owner had a traditional IRA and you have low-income years coming (sabbatical, business loss, between jobs, retirement gap before Social Security), those years are the cheapest time to take large inherited IRA distributions. You cannot convert an inherited traditional IRA to a Roth — only the original owner could have done that — but you can use those low-income years to pull more out at low brackets.

Mistake 4: Forgetting Inherited Roth IRAs Still Have a Deadline

Inherited Roth IRAs are not subject to RMDs during years 1 through 9 (the original owner is treated as having died before their RBD for Roth purposes), but the full balance must still be distributed by year 10. Distributions remain tax-free, but the tax-free compounding clock stops at year 10.

For most high earners, the optimal play with an inherited Roth is to let it compound for the full 10 years and take it all in a lump sum at the end. There is no tax penalty for doing so.

Mistake 5: Not Coordinating With Other Retirement Income

Inherited IRA distributions are ordinary income. They affect:

• Your marginal tax bracket
• Medicare premiums (IRMAA surcharges have multi-year lag effects)
• Social Security taxability
• Capital gains rates if you cross thresholds
• ACA premium tax credits if you buy marketplace insurance
• The 3.8 percent Net Investment Income Tax on your investment income

A larger distribution in one year can produce ripple costs that exceed the income tax itself.

A Practical Framework for the 10-Year Window

There is no one-size answer because tax brackets are personal. But the following framework works for most non-spouse beneficiaries inheriting a traditional IRA from a parent who had reached RMD age.

Step 1: Calculate Your Required Annual RMD

If the original owner was past RBD, your minimum is set by your single life expectancy at the end of the year after death, then reduced by one each year. A 50-year-old beneficiary with a 35.1-year factor must take roughly 1/35.1 of the prior year-end balance the first year, then 1/34.1 the next year, and so on.

This minimum is the floor, not the target.

Step 2: Project Your Marginal Bracket Through Year 10

Sketch your expected income — salary, business income, other retirement income — for each of the next 10 years. Identify the years you are likely to be in the lowest brackets. Plan to take more in those years.

Step 3: Use the 10-Year Anniversary as a Hard Deadline

Mark the December 31 of year 10 on your calendar. If your projection has any meaningful balance left in year 9, you have a problem. Pull it forward.

Step 4: Track Distributions in Your Own Records

Custodian statements show what you took. They do not show what was required. Calculate the RMD yourself each year, document the distribution, and keep the worksheet. If the IRS questions a distribution years later, your contemporaneous records protect you.

Step 5: Re-Project Annually

Your bracket changes when life changes. A new job, a layoff, a business sale, a divorce — all of these reset the optimal distribution. Revisit the plan every January.

Special Situations to Watch

Trusts as IRA beneficiaries. A see-through trust can preserve EDB treatment for a qualifying beneficiary, but the rules are technical. A non-conforming trust collapses the whole account to a 5-year payout instead of 10. If a trust is named, get the trust documents reviewed by a qualified attorney before the first distribution.

Multiple beneficiaries. If the deceased named several non-spouse beneficiaries on a single IRA, the account must generally be split into separate inherited IRAs by September 30 of the year after death. Failure to split can force the entire group onto the oldest beneficiary's distribution schedule, and can disqualify EDBs from preserving stretch treatment.

Roth IRA inherited from a non-spouse. The 10-year deadline applies, but no annual RMDs are required during years 1 through 9 regardless of the deceased's age. Tax-free growth is the strategy.

Successor beneficiaries. If you inherited an IRA from someone who themselves inherited it, you generally must complete distributions over the original beneficiary's remaining schedule — there is no fresh 10-year clock.

State income tax on distributions. Some states (Pennsylvania, for example) do not tax inherited IRA distributions for residents over a certain age. Others do. State residency at the time of distribution can matter as much as federal bracket planning.

Keep Your Inherited Account on a Separate Set of Books

One reason inherited IRA mistakes go undetected for years is that beneficiaries blend the inherited account into their general financial mental model. Distributions get spent. RMDs get missed. Year 10 arrives without a plan.

Keeping inherited retirement accounts cleanly tracked — separate from your own retirement, your taxable brokerage, and your everyday finances — makes the 10-year window manageable. You see balances, projected RMDs, and the total drawdown schedule in one place, every year.

Plain-Text Accounting for the 10-Year Window

The 10-year clock is unforgiving, and the planning lives or dies by visibility. If you cannot see the inherited balance, the year-by-year RMD schedule, and your projected bracket impact in one place, the year 10 surprise is almost guaranteed.

Beancount.io gives you plain-text accounting with full version control and complete transparency into every account, every distribution, and every tax-relevant flow. There are no black boxes, no proprietary file formats, and no vendor lock-in — just a clear, auditable ledger you can keep for the full 10-year window and beyond. Get started for free and bring the same clarity to your inherited account that the IRS expects from your tax return.