The 5-Year Rule for Trusts and Inherited IRAs After SECURE 2.0

What the 5-Year Rule for Trusts Actually Means After SECURE Act 2.0

The 5-year rule for trusts is one of several distribution timelines governing inherited retirement accounts, and it matters far more now than it did five years ago. SECURE Act 2.0, effective January 1, 2023, eliminated the stretch IRA for most non-spouse beneficiaries, compressing what was once a lifetime of tax-deferred distributions into a hard deadline. If a trust is named as beneficiary of a retirement account, the stakes of getting this wrong are measured in hundreds of thousands of dollars.

This is not retail advice. Your estate attorney has probably flagged the SECURE Act changes. This article goes deeper: conduit versus accumulation trust mechanics, the NIIT trap that hits trusts at $15,200, state tax arbitrage worth $600,000+ on a $5M account, and the charitable remainder trust workaround that effectively recreates the old stretch strategy.

What Is the 5-Year Rule for Inherited IRA Trusts After the SECURE Act?

The original 5-year rule, codified under IRC Section 401(a)(9), required non-spouse beneficiaries who inherited a retirement account from an owner who died before their required beginning date to fully distribute the account by December 31 of the fifth year following the year of death. No annual distributions were required during years one through four. The entire balance simply had to be gone by year five.

SECURE Act 2.0 did not eliminate this rule. It added a parallel 10-year rule that now applies to most non-spouse beneficiaries, regardless of whether the original owner had begun taking RMDs. The 5-year rule remains relevant in specific circumstances, including certain trust structures and accounts where the owner died before 2020.

The practical distinction: under the 5-year rule, a trustee managing a $5M inherited IRA has five years to distribute everything. Under the 10-year rule, the window doubles, but the tax math is similar in severity. IRS Notice 2023-75 clarified that beneficiaries subject to the 10-year rule are not required to take annual distributions in years one through nine, but must fully empty the account by the end of year ten.

For trusts specifically, the applicable rule depends on whether the trust qualifies as a "see-through" or "look-through" trust under Treasury Regulation 1.401(a)(9)-4. A trust that fails this test is treated as a non-person beneficiary, triggering the 5-year rule regardless of beneficiary ages or circumstances.

Does the 5-Year Rule Apply to All Trust Beneficiaries of Retirement Accounts?

No. Whether a trust falls under the 5-year rule, the 10-year rule, or life-expectancy distributions depends on two things: the trust's structure and the classification of its underlying beneficiaries.

Treasury Regulation 1.401(a)(9)-4 sets four requirements for a trust to qualify as a designated beneficiary. The trust must be valid under state law, irrevocable at the account owner's death, have identifiable individual beneficiaries, and provide documentation to the plan administrator by October 31 of the year following the owner's death. A trust that fails any of these requirements is treated as having no designated beneficiary, triggering the 5-year rule automatically.

Assuming the trust qualifies, the distribution timeline then depends on who the underlying beneficiaries are. According to IRS Publication 590-B, eligible designated beneficiaries (EDBs) retain access to life-expectancy distributions. EDBs include:

• Surviving spouses
• Minor children of the original account owner (until age of majority)
• Disabled or chronically ill individuals
• Individuals not more than 10 years younger than the decedent

All other non-spouse beneficiaries, including adult children and most trusts with mixed beneficiary pools, are subject to the 10-year rule under SECURE Act 2.0. If the trust has any non-EDB beneficiary, the most restrictive rule applies to the entire trust.

The takeaway for estate planners: a trust with even one non-EDB beneficiary collapses the distribution window to 10 years. A trust that fails the look-through test entirely gets five years. Beneficiary designation review is not a one-time exercise.

What Is the Difference Between a Conduit Trust and an Accumulation Trust for Inherited IRAs?

This is where the planning gets consequential. The conduit versus accumulation trust decision is one of the highest-leverage choices in post-SECURE Act estate planning, and the right answer is not obvious.

Conduit trusts pass all distributions from the inherited IRA directly through to individual beneficiaries. The trust acts as a pipeline: money comes out of the IRA and flows immediately to the named individuals. The advantage is that income is taxed at the individual beneficiary's rate, not the trust's compressed tax schedule.

Accumulation trusts allow the trustee to retain distributions within the trust rather than passing them through immediately. This preserves trustee discretion over timing and amounts, which is valuable for asset protection and spendthrift purposes. The cost is that retained income is taxed at trust rates.

The NIIT problem with accumulation trusts is severe. Under IRC Section 1411, the 3.8% net investment income tax applies to trust income above $15,200 in 2024. For individual filers, the NIIT threshold is $200,000 (single) or $250,000 (married filing jointly). An accumulation trust retaining inherited IRA distributions hits the 3.8% surtax almost immediately, while an individual beneficiary earning $150,000 from other sources would not owe NIIT on the same distribution.

The ABA's Section of Real Property, Trust and Estate Law has documented that the SECURE Act fundamentally altered this calculus. Conduit trusts previously allowed life-expectancy distributions to flow through at individual rates over decades. Now, with a 10-year hard stop, the conduit trust's tax advantage is compressed but not eliminated, particularly for beneficiaries whose personal income is well below the NIIT threshold.

For a complex estate planning strategies review, the conduit versus accumulation decision should be revisited for every trust that was drafted before 2020.

The Tax Cost of Accelerated Distributions: What the Numbers Actually Show

The standard advice to "spread distributions over the 10-year window" understates the problem. For a $5M inherited IRA distributed to a trust beneficiary in the top bracket, the combined tax burden is severe regardless of timing.

Research published in the Journal of Financial Planning found that for beneficiaries in the 37% federal bracket, accelerated distributions from large inherited IRAs under the 10-year rule can produce effective combined marginal rates exceeding 50% in high-tax states. The math in California is particularly brutal: 37% federal income tax, plus 3.8% NIIT, plus 13.3% California state income tax equals approximately 54.1% on each dollar distributed in years when income bunching is most severe.

On a $5M inherited IRA distributed evenly over 10 years, that is $500,000 per year in distributions. At a 54% effective rate, the tax bill on each annual distribution approaches $270,000. The government captures more than half of each dollar in the final years when the account balance and associated income are largest.

State siting matters enormously. A trust in Florida, Texas, or Nevada owes no state income tax on the same distributions. Compared to a California-sited trust distributing a $5M inherited IRA over 10 years, the state tax differential alone can exceed $600,000. Trust siting and beneficiary domicile are material planning variables, not administrative details.

Income bunching strategies can reduce the damage. Distributing more in lower-income years, coordinating with business losses, or timing large distributions against charitable deductions can shift effective rates meaningfully. But the structural problem remains: the SECURE Act eliminated the primary tool for managing this, which was the stretch IRA.

For context on the irrevocable trust 5-year rule complexities that interact with these distribution timelines, the planning considerations extend well beyond the retirement account rules alone.

Can a Spousal Rollover Avoid the 5-Year Distribution Rule?

Yes, and it is the single most powerful tool available for preserving inherited retirement account value. A surviving spouse who inherits a retirement account directly can execute a spousal rollover, transferring the inherited account into their own IRA. This restarts the RMD clock based on the surviving spouse's own age and eliminates the 10-year rule entirely.

For a 50-year-old surviving spouse inheriting a $5M IRA, the spousal rollover defers mandatory distributions by more than 22 years, until age 73 under SECURE Act 2.0. The tax-deferred compounding over that period is substantial. Compare that to a non-spouse beneficiary who must empty the same account within 10 years.

The critical planning failure: a trust named as beneficiary cannot execute a spousal rollover. Only an individual spouse named directly on the beneficiary designation can do so. If a married couple has named a revocable living trust as the primary IRA beneficiary for probate avoidance purposes, the surviving spouse loses rollover eligibility entirely.

The fix is straightforward but requires proactive action. Name the surviving spouse directly as primary beneficiary on all retirement accounts. Use the trust as contingent beneficiary, or use a specially drafted conduit trust that passes distributions through to the spouse immediately. Review beneficiary designations every two to three years, and after any major life event.

For couples currently working through revocable trusts for asset protection planning, the interaction between trust beneficiary designations and spousal rollover eligibility deserves explicit attention in every estate plan review.

How Qualified Charitable Distributions and CRTs Interact with Inherited IRA Trust Rules

For FATFIRE individuals with philanthropic intent and large IRAs, two strategies deserve serious analysis: qualified charitable distributions (QCDs) and charitable remainder trusts (CRTs).

QCDs allow IRA owners aged 70½ or older to transfer up to $105,000 annually (2024 limit, indexed for inflation) directly from an IRA to a qualified charity, excluding the amount from taxable income. QCDs satisfy RMD requirements without generating taxable income, which is particularly valuable for individuals whose RMDs would otherwise trigger IRMAA surcharges or push income above NIIT thresholds. However, QCDs are available only to the original account owner, not to inherited IRA beneficiaries. Once the account passes to a trust, the QCD option disappears.

The CRT strategy is more sophisticated and worth modeling for accounts above $2M. Under IRC Section 664, a charitable remainder trust named as the beneficiary of a retirement account can receive the full lump-sum distribution income-tax-free, since the CRT is a tax-exempt entity. The CRT then pays out an annuity stream, typically 5% annually, to individual beneficiaries over their lifetimes. This effectively recreates the economic benefit of the old stretch IRA while generating a partial charitable deduction.

For a $3M inherited IRA, this structure can preserve an estimated $500,000 to $800,000 in tax value compared to direct distribution to a taxable trust beneficiary in the top bracket. The tradeoff is irrevocability and the charitable remainder requirement: a meaningful portion of the trust assets ultimately passes to charity, not to heirs.

For families already committed to philanthropy, the CRT is not a sacrifice. It is a structural arbitrage between the tax code's treatment of charitable entities and the compressed timelines imposed by SECURE Act 2.0. Pair this with generation-skipping transfer tax strategies for the non-charitable portion of the estate, and the overall wealth transfer efficiency improves substantially.

The Crummey Trust and ILIT 5-Year Rules: A Separate Framework

The 5-year rule discussion above applies to inherited retirement accounts. There is a distinct set of 5-year rules governing irrevocable life insurance trusts (ILITs) and Crummey trusts that operates under an entirely different statutory framework.

Crummey trusts use annual gift tax exclusions to fund life insurance premiums. Beneficiaries receive temporary withdrawal rights (Crummey powers) over each contribution, converting what would otherwise be a future-interest gift into a present-interest gift eligible for the annual exclusion ($18,000 per beneficiary in 2024). The 5-year rule in this context refers to the IRS's ability to look back five years at gifts made to an ILIT when assessing estate inclusion, particularly if the grantor dies within five years of transferring a policy into the trust.

This is a separate concern from the inherited IRA distribution rules and should not be conflated. The irrevocable life insurance trusts tax treatment has its own compliance requirements, including annual Crummey notices and careful documentation of beneficiary withdrawal rights.

For families using ILITs as part of a broader wealth transfer strategy, the family trust insurance protection considerations interact with both the gift tax annual exclusion rules and the estate inclusion lookback period.

Strategic Planning for High-Net-Worth Individuals: Putting It Together

The SECURE Act did not create an unsolvable problem. It created a planning problem that rewards sophistication. The families who preserve the most wealth from large inherited IRAs will be those who addressed the structure before the account owner died, not after.

Pre-death planning priorities:

• Review all retirement account beneficiary designations. Confirm whether trusts named as beneficiaries qualify as look-through trusts under Treasury Regulation 1.401(a)(9)-4.
• For married couples, name the surviving spouse directly as primary beneficiary on all retirement accounts to preserve spousal rollover eligibility.
• Model the conduit versus accumulation trust decision using current account balances, projected growth, and beneficiaries' anticipated income in the distribution years.
• For accounts above $2M with charitable intent, model the CRT strategy against direct distribution.
• Evaluate trust siting relative to beneficiary domicile. The state tax differential on a $5M account can exceed $600,000.

Post-death planning priorities:

• Confirm whether the trust meets look-through requirements before the October 31 documentation deadline.
• Model annual distribution amounts across the 10-year window to minimize income bunching. Coordinate with beneficiaries' other income sources, business events, and planned deductions.
• Evaluate whether a disclaimer strategy allows a surviving spouse to receive assets directly, enabling a spousal rollover even when the trust was originally named as beneficiary.
• Consider tax-loss harvesting in taxable accounts during high-distribution years to offset IRA income.

The benefits of an irrevocable trust extend beyond retirement account planning, but the retirement account interaction is where the largest dollar amounts are typically at stake for FATFIRE-level estates.

For families setting up a trust fund from scratch, building the retirement account beneficiary structure correctly from the outset is substantially cheaper than restructuring after the fact.

RMD Aggregation, Multiple Accounts, and State Law Variations

Multi-account and multi-state situations add complexity that generic guidance ignores.

RMD aggregation rules allow IRA owners to aggregate RMDs across multiple traditional IRAs and satisfy the total from any single account. This flexibility disappears for inherited IRAs. Each inherited IRA must be tracked separately, and distributions from one cannot satisfy RMD requirements for another. A trust inheriting multiple IRAs from the same decedent faces separate 10-year clocks on each account.

Multiple inherited accounts from different decedents are treated entirely independently. A trust that inherits a $2M IRA from one parent and a $3M IRA from another parent has two separate 10-year windows, potentially with different start dates, and no ability to aggregate.

State law variations are material. States like California, New York, and New Jersey impose their own income taxes on inherited IRA distributions with no favorable capital gains rates. Florida, Texas, Nevada, and several other states impose no state income tax. The trust's situs, the trustee's location, and the beneficiary's domicile can all affect which state claims taxing authority, and the rules vary by state. Multi-jurisdictional estates require explicit state tax analysis, not just federal planning.

Some states also have their own trust distribution rules that differ from federal requirements. A trust valid under federal law may face additional compliance requirements in states with their own trust codes. This is particularly relevant for trusts for grandchildren to minimize taxes that span multiple generations and potentially multiple states.

For a thorough review of how these rules interact with your overall estate structure, a comprehensive estate planning guide covering both federal and state dimensions is the appropriate starting point.

References

• Internal Revenue Service -- "Publication 590-B: Distributions from Individual Retirement Arrangements (IRAs)" (2024)
• U.S. Congress -- "Setting Every Community Up for Retirement Enhancement (SECURE) Act 2.0, Division T of the Consolidated Appropriations Act of 2023 (P.L.

117-328)" (2022)

• Internal Revenue Service -- "IRC Section 401(a)(9): Required Minimum Distributions"
• Internal Revenue Service -- "Treasury Regulation 1.401(a)(9)-4: Determination of the Designated Beneficiary"
• Internal Revenue Service -- "Notice 2023-75: Guidance on SECURE 2.0 Act Provisions" (2023)
• American Bar Association -- "Section of Real Property, Trust and Estate Law: SECURE Act Impact on Trust Planning" (2020)
• Journal of Financial Planning -- "Inherited IRA Planning After the SECURE Act: Strategies for High-Net-Worth Families" (2021)
• Internal Revenue Service -- "IRC Section 1411: Imposition of Tax on Net Investment Income"
• Fidelity Investments -- "Inherited IRA RMD Rules and Strategies" (2024)
• Internal Revenue Service -- "IRC Section 664: Charitable Remainder Trusts"