Naming a trust as the beneficiary of an IRA gives the account owner control over how heirs receive the money, but the tax consequences of using a trust as an IRA beneficiary can be severe: a trust hits the top 37% federal income tax rate at just $16,000 of taxable income in 2026, while a single individual doesn’t reach that bracket until $640,600.1Internal Revenue Service. 2026 Estimated Income Tax for Estates and Trusts2Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026 On top of that rate compression, how the trust is drafted determines whether the IRA must be emptied in five years, ten years, or over a beneficiary’s lifetime. A poorly structured trust can turn decades of tax-deferred growth into a single crushing tax bill.
Look-Through vs. Non-Look-Through Classification
Everything about the tax outcome flows from a single classification the IRS applies to the trust. A look-through trust (sometimes called a see-through trust) is one where the IRS ignores the trust entity and treats the individual people behind it as the real beneficiaries. That lets the distribution timeline follow those individuals’ ages and status. A non-look-through trust is any trust that fails to satisfy the look-through requirements, and the IRS treats it the same way it treats a charity or an estate: as a beneficiary with no life expectancy, which forces the shortest possible payout window.
The trustee doesn’t get to elect this. Classification is set by how the trust document was drafted and whether the trustee delivers the right paperwork to the IRA custodian after the owner’s death. Miss either piece and the worst-case distribution schedule locks in with no fix.
What the Trust Must Do to Qualify as Look-Through
The Treasury Regulations require four conditions, all mandatory.3eCFR. 26 CFR 1.401(a)(9)-4 – Determination of the Designated Beneficiary
- The trust must be valid under the state law where it was created.
- The trust must be irrevocable, or must become irrevocable by its terms when the IRA owner dies.
- Every potential beneficiary must be identifiable from the trust document. Naming a charity or the owner’s estate as even a contingent beneficiary kills look-through status.
- The trustee must deliver a copy of the trust document, or a certified list of all trust beneficiaries, to the IRA custodian by October 31 of the year after the IRA owner dies.
The October 31 deadline is the one most commonly missed. A perfectly drafted trust still defaults to non-look-through status if the paperwork doesn’t reach the custodian on time.
How Fast the IRA Must Be Distributed
The payout schedule is the first tax consequence, because it controls how many years of continued deferral the beneficiaries get and how much income will be pushed into any given tax year.
Non-Look-Through Trusts
When a trust fails the look-through requirements, the IRS treats it as having no designated beneficiary, and the SECURE Act did not change the rules for that group.4Internal Revenue Service. Retirement Plan and IRA Required Minimum Distributions FAQs
- If the owner died before the required beginning date (RBD), the entire IRA must be emptied by the end of the fifth year after death. The RBD is April 1 of the year after the owner turns 73, moving to age 75 for owners born in 1960 or later starting in 2033.5Congressional Research Service. Required Minimum Distribution (RMD) Rules for Original Owners
- If the owner died on or after the RBD, distributions come out over the deceased owner’s remaining statistical life expectancy, calculated as of the year of death.
Either way, the ages of the actual human beneficiaries are irrelevant. The IRS never looks past the trust.
Look-Through Trusts
When the trust qualifies, distributions follow the individual beneficiaries’ status under the SECURE Act. Only five categories qualify as eligible designated beneficiaries (EDBs): the surviving spouse, a minor child of the deceased owner, a disabled individual, a chronically ill individual, and someone no more than 10 years younger than the owner.6Internal Revenue Service. Retirement Topics – Beneficiary For a trust with EDB beneficiaries, distributions can be stretched over the oldest EDB’s life expectancy.
For everyone else, mostly adult children and other heirs, the 10-year rule applies. The entire IRA must be distributed by the end of the tenth calendar year after the owner’s death. The SECURE Act eliminated the lifetime stretch for this group.
Annual RMDs Within the 10-Year Window
The 10-year rule does not always mean “wait nine years and take a lump sum at the end.” Whether annual required minimum distributions apply during those ten years turns on whether the IRA owner died before or after the RBD.7Internal Revenue Service. Notice 2024-35 – Certain Required Minimum Distributions
- Owner died before the RBD: no annual RMDs during years one through nine. The trustee has full flexibility to time withdrawals for the best tax outcome, as long as the account is empty by year ten.
- Owner died on or after the RBD: annual RMDs are required in each of the first nine years, based on the beneficiary’s life expectancy, with the balance out by year ten.
This distinction matters. Trustees who assume no annual withdrawals are required during the 10-year period, when the owner actually died after the RBD, are the ones most likely to trigger penalties.
The Year-of-Death RMD
If the IRA owner died on or after the RBD and had not yet taken that year’s full RMD, the trust must complete it. This obligation applies regardless of the trust’s classification or the beneficiaries’ status, and it must be satisfied by December 31 of the year of death.8Internal Revenue Service. Required Minimum Distributions for IRA Beneficiaries It’s separate from the beneficiary’s own distribution schedule and often gets overlooked while the trustee is focused on setting up the inherited IRA.
How the Distributions Are Taxed
Once money leaves the IRA, the income tax result depends on what the trustee does with it. Trusts are independent taxpayers, and the 2026 brackets compress rates aggressively:1Internal Revenue Service. 2026 Estimated Income Tax for Estates and Trusts
- 10% on taxable income up to $3,300
- 24% from $3,301 to $11,700
- 35% from $11,701 to $16,000
- 37% over $16,000
A $100,000 traditional IRA distribution retained inside a trust pays the top federal rate on roughly $84,000 of that income. The same distribution paid out to an individual beneficiary in the 24% bracket saves thousands. That gap is the central tension in every trust-as-IRA-beneficiary arrangement.
One narrow piece of relief: traditional IRA distributions are excluded from the 3.8% net investment income tax, whether received by an individual or a trust.9Office of the Law Revision Counsel. 26 U.S. Code 1411 – Imposition of Tax
Conduit Trusts
A conduit trust requires the trustee to pass every IRA distribution through to the individual beneficiaries in the year received. The trust deducts what it distributes, effectively zeroing out its own taxable income, and the beneficiaries report the income on their personal returns at their individual rates.10Internal Revenue Service. Instructions for Form 1041 and Schedules A, B, G, J, and K-1 (2025) The income keeps its character as ordinary income as it passes through on Schedule K-1.
Under the 10-year rule, though, a conduit trust holding an IRA for a non-EDB must push everything out to the beneficiary within ten years. Once the money leaves the trust, it loses the creditor protection and spendthrift safeguards the trust was set up to provide.
Accumulation Trusts
An accumulation trust lets the trustee hold distributions inside the trust. Retained income is taxed at the compressed trust rates. On $50,000 kept inside the trust, the federal tax bill runs roughly $16,500. The same amount distributed to an individual beneficiary with $60,000 of other income would face a much lower effective rate.
The extra tax is deliberate. Families use accumulation trusts to protect assets from a beneficiary’s creditors, divorce proceedings, or spending habits. The trustee weighs the higher rate against those non-tax benefits each distribution year. For beneficiaries with substance-abuse issues, unstable marriages, or creditor exposure, the higher trust rate can be a rational price to pay.
Roth IRAs Held in Trust
Roth IRAs follow the same distribution timing rules, but the income tax picture is different. Contributions come out tax-free, and earnings come out tax-free once the Roth has been open at least five years.6Internal Revenue Service. Retirement Topics – Beneficiary For a look-through trust with non-EDB beneficiaries, the 10-year rule still applies, but the compressed brackets are irrelevant because the withdrawals themselves aren’t taxed. Growth earned after the money hits the trust, however, is taxed at trust rates if retained.
Because Roth owners have no lifetime required beginning date, a non-look-through trust inheriting a Roth follows the five-year rule rather than the owner’s remaining life expectancy. Look-through qualification is especially valuable for a Roth, since it buys five additional years of tax-free growth.
The IRD Deduction for Estates That Paid Estate Tax
Inherited IRAs do not receive a step-up in basis. Every dollar coming out of an inherited traditional IRA is taxed as ordinary income to the recipient, even though the same dollars may have already been included in the deceased owner’s taxable estate. When the estate was large enough to owe federal estate tax, that overlap is real double taxation.
Section 691(c) provides a partial offset. A trust or beneficiary that includes inherited IRA distributions in gross income can deduct the portion of federal estate tax attributable to the IRA’s inclusion in the estate.11Office of the Law Revision Counsel. 26 U.S. Code 691 – Recipients of Income in Respect of Decedents The deduction is taken in the same year the income is reported, and it applies whether the trust passes the income to beneficiaries or retains it. Most trusts holding modest IRAs never see this deduction because no estate tax was owed. For estates that did owe the tax, skipping it means paying more than the law requires.
Penalties for Missed Distributions
Failing to take a required distribution carries a 25% excise tax on the shortfall, dropping to 10% if the trust corrects the mistake within two years.4Internal Revenue Service. Retirement Plan and IRA Required Minimum Distributions FAQs The shortfall is reported on Form 5329 with the trust’s return. The penalty applies to every missed or short distribution, whether the trust is on a life expectancy schedule or inside the 10-year window with annual RMDs still required.