Naming a trust as IRA beneficiary after the 2024 regs

If you have a client whose retirement account names a revocable trust as the beneficiary, the 2024 final regulations on inherited retirement accounts changed the answer to a question they probably never thought to ask you. The trust-beneficiary structure that worked under pre-2020 assumptions may not work the same way today. The technical resolution that the industry waited five years for landed at Treasury Decision 10001, finalized July 18, 2024 and published at 89 FR 58886. The penalty waivers that softened the transition ended with the 2024 tax year. The 2025 enforcement window is live. This post is the operational read on what changed, the four-cell outcome matrix that determines the tax answer, and the household profiles that should trigger a beneficiary review.

What Treasury Decision 10001 actually decided

Treasury Decision 10001 is the IRS final regulation package interpreting the SECURE Act changes to inherited retirement account rules. The regulations cover required minimum distributions, eligible designated beneficiaries, the ten-year rule, see-through trust mechanics, and the interaction between annual RMDs and the new ten-year window. The most-watched question across five years of proposed and supplemental regulations was whether non-eligible designated beneficiaries who inherit from a decedent who had already begun taking RMDs would have to take annual distributions in years one through nine, or could simply empty the account by year ten. Industry comments asked the IRS to back off. The 2024 finals confirmed the at-least-as-rapidly position the IRS had taken in the 2022 proposed regs.

The result for advisors: a non-eligible designated beneficiary who inherits an IRA from someone who died on or after their required beginning date now has two simultaneous obligations. They must take an annual RMD calculated on their own life expectancy in years one through nine after death, and they must empty the account by the end of year ten. The penalty for missing the annual RMDs in years 2021 through 2024 was waived in IRS Notice 2024-35 to ease the transition. Starting with the 2025 tax year, the IRS enforces the missed-RMD excise tax under IRC § 4974, reduced by the SECURE 2.0 Act from 50 percent to 25 percent of the missed RMD amount, and to 10 percent if the missed RMD is corrected within the statutory correction window.

The grace period is over.

Why a trust ends up as IRA beneficiary in the first place

Naming a revocable trust as the beneficiary of an IRA is one of the older estate planning techniques in the playbook. Three live reasons advisors and counsel still recommend it, and a fourth that has gradually faded since the SECURE Act.

The first reason is control. A direct beneficiary designation hands the IRA to the named individual at the age of majority. A trust beneficiary designation lets the grantor specify how the inherited account is administered: when distributions reach the beneficiary, how proceeds are protected from a beneficiary’s creditors or divorce, what happens if the beneficiary predeceases the grantor.

The second is staged distribution for minor or young-adult beneficiaries. A nineteen-year-old who inherits a seven-figure IRA outright is rarely the outcome the grantor intended. A trust holds the funds and pays out on a schedule the grantor chose.

The third is special-needs planning. A direct inheritance can disqualify a special-needs beneficiary from means-tested public benefits. A properly drafted special-needs trust as beneficiary preserves access without disqualification.

The fourth, now mostly historical, was tax efficiency. Pre-2020, a properly drafted see-through trust could let the trust beneficiaries stretch RMDs over a young beneficiary’s life expectancy and defer income tax across decades. The SECURE Act ended that for most households. The 2024 finals locked the door.

The four-corner see-through trust requirement

A trust is treated as a designated beneficiary for IRA purposes only if it qualifies as a see-through trust. The four-corner test, codified in Treas. Reg. § 1.401(a)(9)-4(c) and confirmed in T.D. 10001, requires four conditions. The trust must be valid under state law. The trust must be irrevocable, or become irrevocable on the grantor’s death. The beneficiaries of the trust must be identifiable from the trust instrument. The trustee must provide a copy of the trust instrument or a list of trust beneficiaries to the plan administrator by October 31 of the year following the year of death.

A trust that fails any of the four corners is not a see-through trust. The IRA defaults to the no-designated-beneficiary rules. That means a five-year rule if death occurred before the required beginning date, and an at-least-as-rapidly distribution under the decedent’s remaining life expectancy if death occurred on or after the RBD. Either outcome compresses the tax timeline more than the ten-year rule does. The four-corner test is the threshold that determines whether the trust gets onto the field at all.

The 2024 finals also clarified two long-running questions on identifiability. First, contingent beneficiaries who would only take if a primary beneficiary predeceased the IRA owner are generally not counted in the see-through analysis. Second, beneficiaries who would take only on the occurrence of a remote contingency that has not yet occurred are also generally not counted. Both clarifications make it easier for a properly drafted see-through trust to keep its status, but the drafting still has to be precise.

Conduit vs accumulation: what the 2024 finals confirmed

Once a trust is a see-through, the next variable is whether the trust is a conduit trust or an accumulation trust. The distinction matters more after the SECURE Act and after the 2024 finals than it did before.

A conduit trust requires the trustee to distribute every dollar of inherited IRA RMDs out to the trust beneficiary in the year received. The conduit beneficiary is treated as a designated beneficiary for IRA purposes. The trust serves as a pass-through for tax purposes and as a control structure for administrative purposes.

An accumulation trust permits the trustee to retain inherited IRA distributions inside the trust. The retained amounts are taxed at trust income tax rates. The trust beneficiaries are still analyzed for see-through purposes, but the question of which beneficiary controls distribution timing depends on the trust drafting and the post-2024 regulatory framework.

Pre-2020, a conduit trust pointed at a young beneficiary could stretch RMDs across a thirty-year payout. The SECURE Act collapsed that to ten years for most non-eligible designated beneficiaries. After 2024, conduit trusts pointed at non-eligible designated beneficiaries empty entirely within ten years and pass the full amount through to the beneficiary. The trust’s control function on the timing of distribution to the beneficiary is gone, because the conduit terms force the distribution out within the same calendar year the trust receives it.

Accumulation trusts can retain. The retention is the feature. The retention is also the tax problem, because trust brackets compress sharply. A trust hits the top federal income tax bracket above roughly fifteen thousand dollars of taxable income, where an individual hits the same bracket above six hundred thousand. A retained ten-year distribution can sit inside an accumulation trust at the top marginal federal rate while the same dollars distributed to an individual beneficiary might be taxed at a substantially lower rate.

The IRA-trust outcome quadrant

The interaction between the eligible-designated-beneficiary status and the conduit-or-accumulation structure produces four possible outcomes. The 2024 finals matter most when the household sits in the bottom-right cell.

The bottom-right cell is the after-2024 tax cliff. A non-eligible designated beneficiary inheriting through an accumulation trust, where the trustee holds distributions inside the trust, faces a payout schedule the SECURE Act compressed to ten years and trust-bracket taxation on retained amounts. The same household, structured with a direct beneficiary designation to the same individual or with a conduit trust paying through to the same individual, often pays substantially less federal tax over the same ten-year window.

A household ends up in the bottom-right cell rarely by intention. The trust language was drafted before 2020 with a stretch-IRA assumption baked in. The accumulation provisions were added to give the trustee flexibility for a young or vulnerable beneficiary. The household never updated the trust language because the SECURE Act seemed like a tax change, not a beneficiary change. The 2024 finals locked in the consequences. The 2025 enforcement starts the meter running on missed annual RMDs.

The five household profiles that should trigger a beneficiary review

Run a beneficiary review on any household that fits one of the profiles below. Each one has a high probability of sitting in the wrong cell of the quadrant above with stale post-SECURE Act language.

• A trust drafted before December 2019 that names the trust as IRA beneficiary, with no review since the SECURE Act.
• A revocable living trust with accumulation provisions naming non-spouse beneficiaries (most adult children).
• A household where one spouse died after January 2020, leaving the other spouse with an inherited IRA structured under pre-SECURE assumptions.
• A trust beneficiary designation drafted to handle a minor child as beneficiary, where the child is now an adult past the eligible-designated-beneficiary window for minors.
• Any IRA where the named beneficiary is a "see-through trust" but the trust drafting predates the 2024 finals and has never been audited against the four-corner test as recently confirmed.

The review is short. The trust beneficiary form is in the IRA custodian’s records. The trust language is in the household file. The decision is whether the current drafting still produces the outcome the grantor intended under the 2024 final rules. If it does, document the review. If it does not, the household either updates the trust language through an amendment or restatement, or updates the IRA beneficiary form to a direct designation, or routes the file to counsel for a more bespoke fix on a fact pattern that the templates cannot resolve.

The tax compression problem in plain numbers

The accumulation-trust tax cliff is easier to feel than to read about. Consider a household where the IRA holds $500,000 at the grantor’s death and the named beneficiary is an accumulation trust pointing at one adult child. Under the 2024 final rules, the trust must empty the account by the end of year ten. If the trustee distributes ratably across ten years, that is roughly $50,000 of taxable distribution per year, before account growth.

If the trustee passes that $50,000 straight through to the adult-child beneficiary as a conduit-style distribution and the child is in a 24 percent federal bracket, the federal tax on that year’s distribution is around $12,000.

If the same trust language requires the trustee to retain the distribution inside the trust, $50,000 of trust taxable income blows past the $15,000 top-bracket threshold. The retained amount gets taxed at trust rates that hit 37 percent federal at the top, plus the 3.8 percent net investment income tax on much of that amount. The federal tax on the same $50,000 is closer to $19,000.

These figures illustrate the structure rather than predict any specific household’s tax. Actual outcomes depend on state tax, account growth, distribution timing, and the trust beneficiary’s other income. The structural point holds: the same dollars taxed inside a trust versus passed through to an individual produce materially different tax outcomes after 2024. Multiplied across ten years and across multiple beneficiaries, the difference is real money.

How Bancroft handles the IRA-trust review workflow

The IRA-trust review workflow inside Bancroft uses three pieces of platform infrastructure that already exist. The Asset Inventory captures every household IRA, the named beneficiary on each, and whether the asset is intended to fund the trust under the BENEFICIARY_DESIGNATION strategy or some other path. The funding letter system includes a RETIREMENT_BENEFICIARY template that generates the change-of-form letter when an advisor updates the strategy on a retirement asset and approves the batch on the Trust Funding tab. The daily reminder cron drives client follow-through until the new beneficiary form lands with the custodian and the proof gets uploaded to the encrypted Digital Safe vault.

What the platform does not do automatically: the platform does not analyze trust language to determine see-through status, conduit-versus-accumulation classification, or 2024-finals compliance. That analysis is the practice of law. Your role on this workflow is to surface the question with the household, walk through the Asset Inventory record on each IRA and the existing beneficiary form on file, and route the file appropriately. Where the household, after reviewing the platform’s plain-English description of the new rules, elects to change a beneficiary designation or to amend or restate the trust, the platform generates the elected output through the questionnaire-driven workflow at no extra fee. Where the fact pattern exceeds what the templates can resolve (existing pre-2020 see-through language, contested EDB status, bespoke conduit-versus-accumulation drafting questions), the file routes for $299 attorney review before any document is finalized. Households that need bespoke see-through trust drafting analysis should expect the file to go to counsel.

The mechanics of the funding letter system are covered in our essay on what banks actually want. The broader framework for the beneficiary review work is the subject of the beneficiary designation drift essay. The fee structure on attorney review is covered in the attorney-reviewed vs attorney-prepared piece. Amendments and restatements run free; details on the amendment path are on the funding letters page.