For decades, an IRA millionaire could leave a large traditional IRA to adult children and reasonably expect that inheritance to provide income across the rest of those children’s lives. The vehicle that made this possible was the lifetime stretch IRA, and it was one of the most powerful intergenerational tax tools written into the code. The SECURE Act of 2019 ended it for most non-spouse heirs. The replacement is a 10-year distribution rule that crushes inherited IRA balances into the heir’s peak earning years, often producing a tax bill several hundred thousand dollars higher than the same inheritance would have generated under the old rules.
For families with substantial pre-tax balances and genuine charitable intent, one of the few remaining ways to recreate the lifetime stretch is to name a testamentary charitable remainder trust as IRA beneficiary. This is a sophisticated planning strategy with real constraints, but for the right family it can preserve hundreds of thousands of dollars across three generations. Below is how it works, when it makes sense, and how it coordinates with the broader Roth conversion plan that should usually run alongside it.
What the Stretch IRA Used to Do
Before 2020, a non-spouse beneficiary who inherited a traditional IRA could take required minimum distributions based on their own life expectancy. A 35-year-old child inheriting a $2 million IRA from a parent had a single life expectancy factor of roughly 48 years, meaning the inheritance was distributed slowly across nearly five decades. Annual distributions started small (perhaps $40,000 to $50,000 in the first year on a $2 million balance), grew gradually, and stayed manageable inside the heir’s marginal tax bracket.
The structure produced two compounding benefits. The inherited IRA itself continued to grow tax-deferred for decades, often outpacing the distributions. And because the annual distributions were small, they rarely pushed the heir into materially higher brackets, triggered IRMAA Medicare surcharges, or interacted with other thresholds in destructive ways.
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The stretch was the difference between an inheritance that worked quietly across an heir’s lifetime and a tax event concentrated into a few years of their career.
What SECURE Took Away
The SECURE Act of 2019 replaced the lifetime stretch with a flat 10-year distribution requirement for most non-spouse beneficiaries. The entire inherited IRA must be emptied by December 31 of the tenth year following the original owner’s death. Final IRS regulations issued in 2024 added the further requirement that, when the original owner died after their required beginning date, annual distributions are mandatory in years 1 through 9, with the account fully drained in year 10.
The compression problem this creates for IRA millionaires’ adult children is severe. Consider a $2 million traditional IRA inherited at age 45 by a beneficiary already earning $250,000 per year. Under the old stretch, the first-year distribution might have been $40,000, layered on top of existing income with minimal bracket impact. Under the 10-year rule, the same beneficiary needs to absorb roughly $200,000 to $250,000 per year in additional taxable IRA income across a decade in which they are already in or near peak earnings.
Stacking that distribution income on top of W-2 wages routinely pushes heirs into the 32% or 35% federal bracket, plus state income tax, plus IRMAA exposure when they reach Medicare age, plus the additional Medicare tax of 0.9% above $250,000 of earned income. The combined marginal rate on those distributions can land anywhere from 35% to 45% depending on state of residence. For a $2 million pre-tax inheritance, that’s $700,000 to $900,000 in total income tax over 10 years, compared to substantially less under the lifetime stretch where distributions were spread thinly.
For larger IRAs ($5 million, $7 million, $10 million-plus), the compression cost can run into seven figures. This is the planning problem that the testamentary charitable remainder trust was designed to solve.
How a Testamentary CRT Recreates the Stretch
A charitable remainder trust is an irrevocable, tax-exempt trust authorized under IRC §664. It receives assets, distributes income to one or more non-charitable beneficiaries for a defined period, and pays the remaining balance to a charitable beneficiary at the end of that period. When the trust is created at the donor’s death and funded by an IRA distribution, it’s called a testamentary charitable remainder unitrust, or T-CRUT.
The mechanics are clean:
Step 1: You name a testamentary CRT as the beneficiary of your IRA. The trust language sits inside your estate documents. The IRA beneficiary form on file with the custodian names the trust (or the trustee in their fiduciary capacity).
Step 2: At your death, the entire IRA balance flows to the CRT with no immediate income tax. Because CRTs are tax-exempt under §664, the IRA distribution to the trust is not a taxable event. There is no 10-year deadline imposed on the trust itself. The full balance is preserved.
Step 3: The CRT distributes income to your beneficiaries over their lifetime or a fixed term. Most testamentary CRTs use either the joint lifetime of one or more beneficiaries or a fixed term not to exceed 20 years. The annual payout must be at least 5% and not more than 50% of the trust’s value, recalculated annually for a unitrust. Beneficiaries pay income tax only on what they actually receive each year, spread across the trust’s term.
Step 4: The remainder eventually passes to charity. When the trust term ends or all non-charitable beneficiaries die, whatever remains in the trust passes to the charitable beneficiary the donor named. Often this is a donor-advised fund, family foundation, or community foundation, allowing the family to retain influence over how the eventual charitable gift is directed.
The structural advantage over the SECURE 10-year payout is straightforward. The trust is tax-exempt at the entity level, which means the underlying IRA assets continue to compound without annual income tax drag for the entire payout term. Distributions to the heir are spread across decades rather than concentrated into one. And the heir’s annual taxable income from the trust is far smaller than the bunched distributions the SECURE Act would otherwise force.
A Worked Example: $2M IRA Inherited at Age 35
Consider an IRA owner who dies in 2026, leaving a $2 million traditional IRA. The beneficiary is a 35-year-old child. Assume an investment return of 6% annually inside the inherited account or trust. Here is how the two scenarios compare in approximate, illustrative terms:
| Outcome | SECURE 10-Year Payout (Direct to Heir) | Testamentary CRUT (5% Payout, 20-Year Term) |
| IRA balance at death | $2,000,000 | $2,000,000 |
| Income tax at IRA receipt | None (deferred) | None (CRT is tax-exempt) |
| Distribution period | 10 years | 20 years |
| Approximate cumulative distributions to heir | $2,650,000 | $2,400,000 |
| Effective marginal rate during distribution years | 35% to 40% (compression effect) | 22% to 32% (spread across more years) |
| Approximate total income tax to heir | $1,000,000 | $720,000 to $850,000 |
| Approximate net to heir, post-tax | $1,650,000 | $1,550,000 to $1,680,000 |
| Eventual charitable remainder | $0 | Variable (often 30% to 50% of original) |
The straight after-tax dollars-to-heir comparison is closer than people often expect, and in many scenarios the SECURE direct payout actually nets the heir a comparable amount. The CRT’s structural value emerges in three places the table doesn’t fully capture.
The CRT distributions happen across 20 years rather than being compressed into peak earning years. The heir’s effective tax rate on each distribution is meaningfully lower because the income lands in different parts of their career, including their post-retirement years when their other income is lower. The trust assets compound tax-free for the full term, which means the $2 million growing inside the CRT consistently outperforms $2 million distributed and then re-invested in the heir’s taxable account, where ongoing dividends and gains are taxed annually.
And the eventual charitable remainder, often 30% to 50% of the original IRA value, is a deliberate gift to the institutions the family cares about. Many families use a portion of the income stream from the CRT to fund a life insurance policy on the heir, with proceeds payable to the next generation, which can replace some or all of the eventual charitable remainder for the family on a tax-advantaged basis.
For larger IRAs ($5 million-plus) and longer beneficiary life expectancies, the math tilts more decisively toward the CRT.
The 10% Remainder Test and Why It Constrains Young Beneficiaries
The most important practical constraint on testamentary CRTs is the 10% remainder test under IRC §664. The present value of the charity’s remainder interest must be at least 10% of the initial contribution to the trust. The calculation uses IRS actuarial tables and the §7520 interest rate in effect at the time the trust is funded.
For testamentary CRTs naming young beneficiaries, this test is often the binding constraint. A 5% payout to a 30-year-old beneficiary may fail the 10% test because actuarially, the beneficiary’s expected lifetime is so long that very little is projected to remain for charity. Common solutions:
Use a 20-year term instead of a lifetime term. A fixed 20-year payout often passes the 10% test even when a lifetime payout for the same young beneficiary would not. This is the most common workaround for younger heirs.
Lower the payout rate. A 5% payout creates more room for the charitable remainder than a 7% payout. The trade-off is less income to the beneficiary each year.
Take advantage of higher interest rate environments. The §7520 rate directly affects the math. Higher interest rates produce a smaller present value for the income stream, which leaves a larger present value for the charitable remainder. Funding (or designing) the trust during periods of higher rates makes the test easier to satisfy.
Use multiple beneficiaries with shorter combined life expectancies. A CRT for the joint lives of older beneficiaries, or a CRT that includes parents alongside children, can sometimes pass the test where a single young beneficiary alone would not.
Drafting these trusts requires an experienced estate planning attorney with CRT modeling software. Getting the test wrong voids the trust’s qualification under §664 and removes all the tax benefits.
When This Strategy Makes Sense
The testamentary CRT-as-IRA-beneficiary strategy is not universally applicable. Several conditions need to align:
A substantial traditional IRA balance. Generally $1 million minimum, often $2 million or more. Below that threshold, the legal and administrative costs of drafting and administering the trust consume too much of the benefit.
Non-spouse beneficiaries in their peak earning years. The strategy provides the most value when heirs would otherwise face the highest marginal rates under the SECURE 10-year payout. Adult children in their 40s and 50s with established careers fit this profile.
Genuine charitable intent. This is essential. The remainder going to charity is real. Even with life insurance overlay strategies to replace it for the family, the CRT structure transfers meaningful value to charity. Don’t pursue this strategy if you don’t actually want to give to charity.
A long enough beneficiary life expectancy or term to capture the stretch benefit. Younger and middle-aged beneficiaries capture more value than beneficiaries already in their late 60s or 70s.
Comfort with irrevocability. Once the testamentary CRT is named as IRA beneficiary and you die, the structure is locked. The trust cannot be modified from beyond.
When It Doesn’t Work
The strategy doesn’t fit every situation. Specifically:
Spousal beneficiaries are almost always better served by a spousal IRA rollover, which preserves the surviving spouse’s lifetime stretch independently. SECURE didn’t change spousal rollover rules.
Eligible Designated Beneficiaries under SECURE, including minor children of the IRA owner, disabled or chronically ill beneficiaries, and beneficiaries less than 10 years younger than the owner, retain the lifetime stretch directly. The CRT strategy is unnecessary for them.
Charitably-disinclined families lose meaningful value to charity that they may not want to give up, even with life insurance overlay strategies.
Modest IRA balances (under $1 million in most cases) generally don’t support the legal and administrative overhead.
Very high marginal-rate trust beneficiaries in jurisdictions with hostile state-level CRT taxation (a small number of states do not respect the federal tax-exempt status of CRTs at the state level) may see the math erode meaningfully.
How This Coordinates With Roth Conversions
For most IRA millionaires, the testamentary CRT shouldn’t be considered in isolation. It works best as the final layer in a coordinated multi-decade strategy that begins with aggressive lifetime Roth conversions during the pre-RMD years.
The full sequencing for a typical IRA-millionaire planning arc looks like this:
In the pre-RMD years, generally between retirement and age 73 or 75 (depending on year of birth under SECURE 2.0), the family converts traditional IRA balances to Roth at favorable bracket levels. Our multi-year Roth conversion framework covers the bracket-filling approach that drives this stage.
In active retirement, conversions continue where the math still works, complemented by qualified charitable distributions once the owner reaches 70½. The interaction with required distributions becomes important here, and we’ve covered the interaction between conversions and RMDs in more depth.
At death, the residual traditional IRA balance flows to the testamentary CRT for stretch replacement, while the Roth IRA balance passes directly to heirs subject to the ten-year rule for inherited Roth IRAs but tax-free. The family captures both the Roth tax-free advantage and the CRT lifetime-spread advantage.
This sequence often produces the strongest combined intergenerational outcome. We’ve covered related considerations in our work on charitable giving and Roth conversions and broader estate planning with Roth conversions.
About Q3 Advisors
Q3 Advisors is a fiduciary financial planning firm with decades of combined experience in Roth conversion strategy, retirement tax planning, and legacy coordination for IRA millionaires. We work exclusively for our clients with no commissions, no product sales, and no asset management fees. Our planning process models the multi-decade tax picture across three generations, including how testamentary CRTs interact with lifetime conversions and the broader estate plan.
Frequently Asked Questions
Does naming a CRT as IRA beneficiary really avoid income tax on the IRA distribution?
Yes, at the trust level. Charitable remainder trusts are tax-exempt under IRC §664, so the IRA distribution to the trust at the owner’s death does not trigger immediate income tax. The income tax is paid by the beneficiary as distributions are received from the trust over the term, typically at lower effective rates than the SECURE 10-year payout would produce.
Can my children just receive the IRA directly and use the 10-year rule?
They can, and for some families that’s the right answer. The CRT strategy is most valuable when the heirs would face high marginal rates during the 10-year window, when the IRA balance is large enough to justify the legal and administrative overhead, and when the family has genuine charitable intent. For smaller IRAs or families without charitable intent, direct payout is usually preferable.
What is the 10% remainder test and why does it matter?
A CRT must satisfy a §664 actuarial test showing that the present value of the charitable remainder is at least 10% of the initial contribution. For trusts with young beneficiaries or low §7520 interest rates, this test can be hard to satisfy with a lifetime payout. Common workarounds include using a 20-year fixed term, lowering the payout rate, or naming older or joint beneficiaries.
How much of the IRA actually ends up going to charity?
It varies based on the payout rate, beneficiary age, term length, investment returns, and §7520 rate at funding. In practice, the eventual charitable remainder often falls between 30% and 50% of the original IRA value. Families who want to replace this for the next generation often layer in a life insurance policy funded from the trust’s income stream.
Can I change my mind about the CRT after I’ve set it up?
The beneficiary designation on the IRA can be changed during your lifetime, including removing the testamentary CRT entirely if your circumstances change. Once you die, the trust structure becomes irrevocable and the IRA flows to the trust as designated.
Does this strategy work for inherited Roth IRAs?
The CRT-as-IRA-beneficiary strategy is most often used for traditional IRAs, where the SECURE 10-year compression creates a severe tax problem. Inherited Roth IRAs are subject to the same 10-year distribution rule but produce tax-free distributions, so the CRT generally doesn’t add enough value to justify the complexity for Roth balances. Most planning leaves the Roth to heirs directly and uses the CRT only for the residual traditional balance.
Putting This Into a Larger Plan
A testamentary CRT is one of the few remaining tools that can recreate the lifetime stretch under current law, but it works best when it sits alongside a coordinated Roth conversion strategy that’s been running for years before death. The combination of lifetime conversions reducing the traditional balance, plus a testamentary CRT capturing whatever remains, plus the Roth IRA passing directly to heirs, produces the strongest multi-generational outcome we typically see for IRA millionaires with charitable intent. If you’d like to look at how this fits your situation, you can read more about our Legacy Roth conversion planning or speak with our team.
