For decades, IRAs were one of the most efficient ways to pass wealth to the next generation. A child or grandchild who inherited a traditional IRA could “stretch” distributions across their own lifetime, letting the account grow tax-deferred for thirty or forty more years. That changed in 2020. The SECURE Act collapsed the stretch into a ten-year window for most non-spouse heirs, and the IRS finalized the supporting regulations in 2024. The result: a tax bill your heirs once could spread thinly across decades now lands inside a single decade, often during their highest-earning years.
The inherited IRA 10 year rule is the most consequential retirement-planning change in a generation. And once you understand how it actually works, the case for Roth conversions during your lifetime becomes much harder to argue against.
What the 10-Year Rule Actually Requires in 2026
The rule sounds simple at first. Most non-spouse beneficiaries who inherit an IRA must empty the account by December 31 of the tenth year following the original owner’s death. Anything left in the account after that triggers a 25% excise tax penalty (reducible to 10% with a timely correction).
The complication is what happens during those ten years. Final IRS regulations clarified the framework heading into 2025 and 2026, and the answer depends on when the original owner died:
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- If the original owner died before their required beginning date (RBD) for required minimum distributions, the heir can wait and take the entire balance any time within the ten years. There are no annual minimum distributions.
- If the original owner died after their RBD, the heir must take annual RMDs in years 1 through 9, then fully drain the account by the end of year 10. Missing one of those annual distributions can trigger the penalty.
A separate set of rules applies to eligible designated beneficiaries, surviving spouses, minor children of the owner, disabled or chronically ill individuals, and beneficiaries less than ten years younger than the original owner. These groups generally retain stretch-style options. Everyone else, adult children, adult grandchildren, friends, most trusts, falls under the ten-year regime.
The penalty waivers the IRS granted from 2021 through 2024 are gone. Beneficiaries who inherited in 2020, 2021, 2022, or 2023 are now mid-window, and the clock is running on real distribution requirements with real penalties attached.
The Tax Trap Hiding Inside Inherited Traditional IRAs
A traditional IRA is a tax-deferred account. Every dollar inside it has never been taxed, and every dollar that comes out gets taxed as ordinary income. Under the old stretch rules, that didn’t matter much. A 45-year-old who inherited $1.5 million from a parent could pull out roughly $30,000 a year for forty years, layering small amounts on top of their existing salary and barely moving their tax bracket.
Compress that same $1.5 million into ten years and the math changes completely. Now the heir is adding $150,000 (or more, with growth) to their income every year, exactly during the years when their own career is peaking, their kids may be in college, and their spouse may also be earning. The marginal rate on those distributions can easily land in the 32% or 35% federal bracket, plus state income tax, plus potential surcharges that ripple through other parts of their financial life.
There’s a second layer most families don’t catch until it’s too late. Inherited IRA distributions count as ordinary income, which means they push up Modified Adjusted Gross Income. For an heir who is 63 or older when distributions begin, that bump can trigger IRMAA surcharges on Medicare Part B premiums two years later. A child who inherits in their late fifties may not have that problem yet, but the next inheritance, from a surviving spouse, perhaps, could land squarely in the IRMAA zone.
The pre-2020 stretch IRA absorbed all of this quietly. The ten-year rule does not.
Why a Roth Inheritance Sidesteps the Trap
Inherited Roth IRAs are subject to the same ten-year distribution requirement. The difference is that qualified distributions come out tax-free.
That single fact reshapes the planning conversation. With an inherited traditional IRA, every dollar withdrawn is a taxable event. With an inherited Roth IRA, the heir generally can let the account compound tax-free for nine years and then take the full balance in year ten, no income tax, no IRMAA risk, no bracket creep, no interaction with their own earned income. The original five-year holding period must be satisfied for the distribution to be qualified, but for accounts established years before death, this is rarely an obstacle.
Final IRS regulations also confirmed a quiet but important point: a Roth IRA owner is treated as having died before their required beginning date regardless of their actual age, because Roth IRA owners have no lifetime RMDs to begin with. That means non-eligible designated beneficiaries of a Roth IRA never have to take annual distributions during the ten-year window. They can let the account grow undisturbed and take everything in year ten.
We’ve written more about how inherited Roth IRAs under the ten-year rule work in practice, including the spousal rollover option, which remains the most flexible inheritance treatment in the entire tax code.
The Math: Conversion Tax Now vs. Beneficiary Tax Later
A Roth conversion isn’t free. You pay ordinary income tax on the converted amount in the year of the conversion. The question every IRA owner has to answer is whether the tax you pay now is smaller than the tax your heir would pay later.
Here’s a simplified comparison of how that math plays out for a $1 million IRA inherited by an adult child, assuming the account grows at 6% annually during the ten-year window:
| Scenario | Owner’s Bracket on Conversion | Heir’s Bracket on Distribution | Approximate Total Federal Tax |
| No conversion, heir inherits traditional IRA | N/A | 24% | ~$430,000 (spread across 10 years of distributions on a growing balance) |
| No conversion, heir inherits traditional IRA | N/A | 32% | ~$573,000 |
| No conversion, heir inherits traditional IRA | N/A | 35% | ~$626,000 |
| Full conversion now, heir inherits Roth | 24% | 0% | $240,000 |
| Full conversion now, heir inherits Roth | 32% | 0% | $320,000 |
| Multi-year conversion staying in 22–24% | Blended 23% | 0% | ~$230,000 |
These figures are illustrative, actual results depend on state tax, specific brackets, growth assumptions, and the timing of distributions. But the structural insight holds: when the owner can convert at a lower bracket than the heir will face at distribution, the family wins. And under the ten-year rule, heirs in their peak earning years are far more likely to land in higher brackets than they would have under the old stretch.
There’s a subtler point baked into these numbers. The conversion tax is paid on today’s balance. The inherited-IRA tax is paid on tomorrow’s balance, after another decade of growth. By converting now, you’re effectively prepaying tax on a smaller number, and the growth that follows happens inside a Roth, where it compounds tax-free instead of tax-deferred.
For households with significant pre-tax balances, we’ve seen strategic conversion plans save more than $1,000,000 in cumulative family taxes across two generations.
Five Reasons the 10-Year Rule Strengthens the Conversion Case
- Bracket arbitrage is now a generational opportunity. Most retirees in their sixties and early seventies sit in lower brackets than their working-age children. Converting in the owner’s bracket and inheriting tax-free in the heir’s bracket captures that gap permanently.
- The TCJA bracket window is closing. Current federal brackets, set by the Tax Cuts and Jobs Act of 2017, remain in effect, but the political and fiscal pressure on rates is significant. Conversions completed under today’s rate schedule lock in the cost.
- RMD interaction becomes simpler. Once an owner reaches RMD age, every dollar still in a traditional IRA generates a forced taxable distribution. Roth IRAs have no lifetime RMDs for the owner, so converting reduces the owner’s own RMD exposure while also reducing what eventually passes under the ten-year rule. We’ve covered the interaction between RMDs and Roth conversions in more detail.
- IRMAA risk shifts to the year of conversion, where you control it. A conversion is planned. A bracket-crushing inherited distribution is reactive. Owners can sequence conversions to manage IRMAA across years; heirs often cannot.
- The surviving spouse keeps options. A spouse can roll an inherited IRA into their own and continue stretching distributions across their lifetime. But when that spouse eventually passes, the children will face the ten-year rule on whatever balance remains. Conversions completed during the first spouse’s lifetime, and during the surviving spouse’s lifetime, both shrink the eventual exposure.
What Could Weaken the Case
Roth conversions are not universally correct. A few situations genuinely argue against converting, or against converting aggressively:
- The owner is in an unusually high bracket today. A retiree still working part-time at a high income, or one with a large pension and Social Security pushing them into the 32%+ bracket, may not have meaningful arbitrage available. Converting at 35% to save an heir 24% is a losing trade.
- The named beneficiary is a charity. Charities pay no income tax on inherited IRA distributions. If a traditional IRA is going to charity anyway, converting it first only adds tax friction.
- The owner has a short remaining life expectancy and limited assets to pay conversion tax. Conversions work best when paid for from non-retirement funds. If paying the tax requires drawing down the IRA itself, the math erodes quickly.
- The owner expects to spend most of the IRA during retirement. If the account is going to fund living expenses anyway, the inheritance question is smaller than it appears.
The right answer is rarely “convert everything” or “convert nothing.” It’s usually a multi-year, bracket-aware sequence that fits the family’s specific timing.
Coordinating Conversions With Estate Planning
The 10-year rule doesn’t only change conversion math. It changes beneficiary designations, trust language, and the order in which accounts should be drawn down. A few coordination points worth flagging:
- Beneficiary designations override wills. An IRA passes by designation, not by will. Designations set up before the SECURE Act may no longer reflect what the owner actually wants given the new distribution rules.
- Conduit trusts can become tax disasters. Many trusts named as IRA beneficiaries before 2020 were drafted assuming lifetime stretch distributions. Under the ten-year rule, those trusts may force compressed distributions taxed at compressed trust rates, among the harshest in the federal code.
- Account titling matters. Splitting beneficiaries across traditional and Roth assets, or designating different heirs for different accounts, can dramatically improve the after-tax outcome for the family as a whole.
- The order of drawdowns shifts. When Roth assets are present, the conventional wisdom of “spend taxable first, tax-deferred second, Roth last” still holds for the owner, but the inheritance picture changes when the goal is to leave Roth, not traditional, to non-spouse heirs.
For a deeper look at how these pieces fit together, see our post on estate planning with Roth conversions.
About Q3 Advisors
Q3 Advisors is a fiduciary financial planning firm specializing in Roth conversion strategy and retirement tax planning. We work exclusively for our clients, no commissions, no product sales, no asset management fees. With decades of combined experience helping IRA owners coordinate conversions, RMDs, estate planning, and beneficiary designations, our team has refined a process built around one goal: keeping more of your retirement assets in your family and out of the IRS’s hands.
Frequently Asked Questions
Does the 10-year rule apply to spouses?
No. A surviving spouse can roll an inherited IRA into their own account and continue under standard owner rules, including their own RMD schedule. The ten-year rule applies primarily to non-spouse, non-eligible designated beneficiaries.
Are inherited Roth IRAs tax-free for heirs?
Qualified distributions from an inherited Roth IRA are generally tax-free, provided the original Roth IRA was open for at least five years before the owner’s death. The ten-year liquidation requirement still applies, but no income tax is owed on the distributions.
If I do a Roth conversion now, does my heir still face the 10-year rule?
Yes. The ten-year distribution requirement applies to inherited Roth IRAs as well. The difference is that distributions come out tax-free rather than as taxable ordinary income.
What happens if my heir misses an annual RMD during the 10-year window?
The IRS may assess a 25% excise tax on the missed distribution amount. That penalty can be reduced to 10% if the missed distribution is corrected promptly through the proper IRS process.
Should I convert my entire IRA in one year?
Rarely. A single-year full conversion often pushes the owner into the highest tax brackets, defeating the purpose. Most planning involves a multi-year sequence that fills lower brackets each year while leaving room for other taxable income.
What if my children are also high earners?
That’s exactly when the ten-year rule does the most damage to a traditional IRA inheritance, and exactly when conversions tend to produce the largest family tax savings. The wider the gap between the owner’s bracket today and the heir’s projected bracket during the distribution window, the stronger the case.
Plan Your Conversion Strategy Today
Understanding the ten-year rule is one thing. Modeling how it interacts with your specific bracket, RMD schedule, beneficiary mix, and estate plan is another. If you’d like to see how Roth conversions could reshape your family’s tax picture, you can learn more about our Legacy Roth conversion planning and core Roth conversion services, or schedule a consultation to walk through your situation.
