Inherited IRA rules look simple until you try to apply them. Many beneficiaries hear “10-year rule” and assume they can wait until the tenth year, empty the account, and move on. In 2026, that assumption can be expensive. Depending on who inherited the account and whether the original owner had already reached their required beginning date or had already started RMDs, annual withdrawals may still be required during the 10-year window.
The planning problem is not just compliance. It is taxes. A $300,000 inherited traditional IRA distributed evenly over 10 years creates about $30,000 of ordinary income per year before growth. Wait until year 10 and the same account could force a six-figure taxable distribution into one year, potentially pushing a beneficiary into a higher federal bracket, increasing state taxes, raising Medicare IRMAA surcharges two years later, and making more Social Security taxable.
Key Takeaway
The inherited IRA 10-year rule is a deadline, not always a free pass to skip annual withdrawals. Before choosing a distribution schedule, identify the beneficiary type, the account type, whether the original owner had started RMDs, and the beneficiary's own tax bracket.
Start With the Beneficiary Type
Who qualifies for special treatment?
Inherited IRA rules depend first on who received the account. A surviving spouse usually has the most flexibility. They may be able to treat the IRA as their own, roll it into their own IRA, or remain a beneficiary depending on age and cash-flow needs. Eligible designated beneficiaries, such as certain minor children of the owner, disabled or chronically ill beneficiaries, and beneficiaries not more than 10 years younger than the owner, can have different payout options.
Most adult children and many other named beneficiaries are non-eligible designated beneficiaries. They are generally subject to the 10-year rule for inherited traditional IRAs and inherited Roth IRAs. Surviving spouses and eligible designated beneficiaries may qualify for different schedules, so do not apply the adult-child rule to every beneficiary. For non-eligible beneficiaries, the inherited account must generally be fully distributed by the end of the tenth year after the original owner's death. The hard part is deciding whether withdrawals also need to occur before year 10.
The Annual RMD Question
What changes if the owner had already begun RMDs?
For many non-spouse beneficiaries of traditional IRAs, the annual RMD question turns on whether the original owner died before or after their required beginning date. If the owner died before RMDs began, the beneficiary may generally have more flexibility inside the 10-year window. If the owner died after RMDs had begun, non-eligible designated beneficiaries generally must continue annual distributions while still emptying the account by year 10. Trusts, spouse beneficiaries, eligible designated beneficiaries, and account-specific facts can change the result, so verify the rule before skipping a year.
This is why “my parent left me an IRA” is not enough information. A beneficiary who inherited from a 68-year-old may face a different timing problem than one who inherited from an 82-year-old. A beneficiary who inherited a Roth IRA faces a different tax result from one who inherited a traditional IRA. And a trust named as beneficiary can create another layer of complexity that should be reviewed by a qualified tax or estate professional.
Warning
Do not assume the custodian will prevent mistakes. IRA custodians may report balances and provide forms, but beneficiaries are responsible for understanding which distribution rule applies and for correcting missed withdrawals.
A Simple 2026 Example
Why 2026 deserves attention
The 2026 planning year matters because many families are now several years into the post-SECURE Act beneficiary regime, and inherited accounts from recent deaths are reaching the point where waiting for “later” can turn into compressed taxable income. IRS publications and RMD FAQs remain the baseline source, but beneficiaries still need a year-by-year plan before the tenth-year deadline gets close.
Assume Maria inherits a $400,000 traditional IRA from her father in 2026. Her father was 78 and had already begun taking RMDs. Maria is 52, earns $115,000, and files single. If she waits until year 10 and the inherited IRA grows to $520,000, a full distribution could push her into a much higher tax bracket in that year.
If instead she withdraws roughly $40,000 to $55,000 per year, she may keep more of the income inside predictable tax brackets. The best schedule is not automatically “even over 10 years.” If Maria plans to retire in five years, she might take smaller withdrawals while working and larger withdrawals after her wages stop. If she expects a sabbatical, relocation, business sale, or Roth conversion year, the inherited IRA schedule should be coordinated with those events.
Traditional IRA vs. Inherited Roth IRA
How inherited Roth IRAs differ
An inherited traditional IRA is usually taxable as ordinary income when distributed. That income can affect federal tax brackets, state taxes, Social Security taxation, ACA subsidies before Medicare, and IRMAA after Medicare begins. An inherited Roth IRA is usually income-tax-free if the five-year Roth rule has been satisfied, but the 10-year cleanout deadline can still apply.
Because the tax treatment differs, the planning priority differs. With an inherited traditional IRA, the goal is often to smooth taxable income. With an inherited Roth IRA, the goal may be to preserve tax-free growth as long as allowed, while still meeting the 10-year deadline. Beneficiaries who inherit both types should avoid treating them as interchangeable.
How Inherited IRA Income Can Trigger IRMAA
Medicare IRMAA uses modified adjusted gross income from two years earlier. A beneficiary who is 63 in 2026 and takes a large inherited IRA withdrawal may see the Medicare premium effect at age 65 or 66. That two-year lookback makes inherited IRA planning especially important for people close to Medicare age.
For example, a married couple with $190,000 of MAGI might think they are safely below an IRMAA threshold. Add a $75,000 inherited IRA withdrawal and they may cross a premium cliff. That surcharge can apply to both Part B and Part D premiums. If this is your situation, review what income counts for IRMAA and the broader Medicare IRMAA surcharge rules before choosing a withdrawal amount.
Important Consideration
The best inherited IRA withdrawal year is often not the year with the lowest account balance. It is the year when the beneficiary's total taxable income, Medicare status, Social Security taxation, and state tax situation make the withdrawal least damaging.
Inherited IRA Checklist for 2026
- Confirm the beneficiary category. Spouse, eligible designated beneficiary, non-eligible designated beneficiary, trust, charity, and estate beneficiaries can have different rules.
- Identify the original owner's RMD status. Ask whether they had reached their required beginning date before death.
- Separate traditional and Roth accounts. Do not combine tax-free and taxable inherited IRA logic.
- Map all 10 years. List expected wages, retirement date, Social Security claiming age, pensions, capital gains, Roth conversions, and Medicare start year.
- Coordinate with your own RMDs. If you are near your 70s, inherited IRA withdrawals may collide with your own required distributions.
- Get tax help for trusts or missed distributions. The cost of advice is small compared with a preventable penalty or bracket mistake.
Using Bullseye to Stress-Test the Tax Impact
Bullseye does not automatically calculate inherited IRA beneficiary rules, determine whether annual beneficiary RMDs are required, or provide legal tax advice. Use IRS guidance and a qualified professional to identify the required withdrawal amounts first. Then use Bullseye to model the retirement cash-flow and tax impact of the withdrawal schedule you manually enter.
Add inherited IRA distributions as manually entered taxable income or expense-offsetting cash-flow scenarios, then compare how different schedules affect taxes, Social Security taxation, Medicare costs, and portfolio withdrawals. Bullseye's retirement tax planner and AI retirement planner are useful for seeing the year-by-year ripple effects through age 95. For owner RMD basics, pair this with Understanding Required Minimum Distributions.
Bottom Line
The inherited IRA 10-year rule is not just a calendar deadline. It is a tax-planning problem spread across 10 years. Beneficiaries should confirm their rule, avoid assuming annual withdrawals are optional, and build a distribution schedule around total income rather than around convenience. If the inherited account is large, the owner died after RMDs began, or a trust is involved, get professional tax guidance before year-end.
