The Trust You Named as Your IRA Beneficiary Hits the 37% Bracket at $16,000
A married couple filing jointly reaches the top 37% federal bracket in 2026 at $768,700 of taxable income. A trust reaches it at $16,000.
That gap of roughly $752,000 is the whole reason this decision deserves more than a signature. And it is usually decided in about four seconds, on a custodian's beneficiary designation form, in a blank line that says Primary Beneficiary.
Nobody at the other end of that form is coordinating it with anything. The estate attorney drafted the trust. The custodian processes the designation. The tax preparer sees the result years later, on a Form 1041 nobody expected to file. The intersection of those three is where the money is either preserved or lost, and at most firms it is nobody's job.
What the 2026 numbers actually look like
Trusts and estates are separate taxpayers with their own rate schedule, and that schedule is compressed into a range most households clear in a single month. For 2026:
| Retained taxable income | Federal rate |
|---|---|
| Not over $3,300 | 10% |
| Over $3,300 to $11,700 | 24% |
| Over $11,700 to $16,000 | 35% |
| Over $16,000 | 37% |
A 3.8% net investment income tax applies on top of that, calculated on the lesser of the trust's undistributed net investment income or the amount by which its income exceeds that same $16,000 threshold. The top federal rate on retained investment income reaches 40.8%. California taxes retained trust income as well, at rates topping out at 13.3%.
Add those together and retained trust income in California can face a combined marginal rate above 50%. The same income, distributed to an adult child in the 24% bracket, faces 24%.
Naming your estate is the outcome to avoid
An estate is not a person, which means under the SECURE Act it is not a designated beneficiary at all. That classification eliminates every favorable payout option before the conversation starts.
- If the owner died before the required beginning date, the account must be emptied within five years.
- If the owner died on or after the required beginning date, distributions follow the decedent's remaining single life expectancy, reduced by one each year. Practitioners call this the ghost rule.
- The IRA becomes a probate asset, which makes it public, slower, and exposed to creditors of the estate.
- A surviving spouse loses the automatic right to roll the account into her own IRA. Restoring it generally requires a private letter ruling from the IRS, at real cost and real delay.
Estates rarely end up on beneficiary forms on purpose. They end up there through a blank line, a form that was never updated after a death or a divorce, or a default provision in the custodian's paperwork that nobody read. The fix costs nothing while you are alive and cannot be fixed at all afterward.
A see-through trust preserves options, and then forces a choice
A trust that satisfies the IRS see-through requirements lets the rules look past the trust to the individuals behind it, so their ages and status determine the payout. That is the good outcome, and it is the one every well-drafted trust is aiming for.
What most people do not realize is that qualifying as a see-through trust only earns you the right to make a harder decision. See-through trusts come in two forms, and they solve opposite problems.
Conduit trusts
A conduit trust requires the trustee to pass every distribution it receives straight through to the beneficiary. Nothing is retained, so nothing is taxed at trust rates. The income lands on the beneficiary's personal return at the beneficiary's bracket.
The cost is control. Money that passes through immediately is money the trust is no longer protecting. Under the 10-year rule, the entire inherited IRA passes through the trust and into the beneficiary's hands by December 31 of the tenth year after death. If the reason for the trust was to protect a beneficiary from creditors, a divorce, or their own judgment, a conduit trust delivers that protection for ten years and then hands over the balance.
Accumulation trusts
An accumulation trust lets the trustee retain distributions inside the trust. Control is preserved indefinitely. Retained income is taxed on the compressed schedule above.
Here is the part that gets missed: the trustee of an accumulation trust generally can distribute income out to beneficiaries and claim a deduction for it, which moves the tax to the beneficiary's lower rate. But distributing the income is exactly what the accumulation trust was created not to do. If the grantor's purpose was to keep the money away from the beneficiary, then serving that purpose is what triggers the 37% bracket. The tax cost is not a drafting error. It is the price of the protection.
Accumulation trusts carry a second trap that catches even well-drafted documents. Because distributions can be retained, the IRS looks past the current beneficiaries to every potential beneficiary, including contingent and remainder beneficiaries. A charity named to receive whatever is left after the children die is not an individual, and its presence can disqualify the trust from see-through treatment entirely. SECURE 2.0 created an exception allowing a charitable remainder beneficiary in an applicable multi-beneficiary trust for a disabled or chronically ill beneficiary. That exception does not extend to ordinary accumulation trusts. A charitable bequest that reads as generous in the trust document can quietly cost the family the 10-year rule and drop the account into the five-year rule instead.
Conduit trusts protect money for a decade and then release it. Accumulation trusts protect it indefinitely and pay for the privilege. There is no third option that does both.
The 2024 final regulations changed the math
The IRS issued final RMD regulations in July 2024, and full enforcement of the annual distribution requirement began with the 2025 distribution year. Two points matter for anyone whose beneficiary form names a trust.
Annual RMDs are now required inside the 10-year window. If the original owner died on or after the required beginning date, a designated beneficiary who is not an eligible designated beneficiary must take annual RMDs in years one through nine and empty the account by the end of year ten. Waiting until year ten is no longer permitted, and for a conduit trust that means a decade of forced distributions rather than a single planned one.
Trust documentation rules were narrowed. The final regulations removed the requirement that a trustee supply trust documentation to an IRA custodian in order to satisfy the see-through rules. For employer-sponsored plans, the documentation deadline of October 31 of the year following the year of death still applies. If a client's retirement assets are still sitting in a 401(k) rather than an IRA, that deadline is live.
What this looks like on a real balance sheet
Consider a hypothetical: an IRA owner dies at 78 with a $2 million traditional IRA, having named a revocable living trust as beneficiary. The trust is an accumulation trust for two adult children, neither of whom is disabled, chronically ill, or within ten years of the decedent's age.
The children are designated beneficiaries subject to the 10-year rule, and because the owner died after his required beginning date, annual RMDs apply in years one through nine. For an accumulation trust, those RMDs are calculated on the oldest trust beneficiary's single life expectancy. If the older child is 52, the IRS Single Life Table factor is 34.3, so the year-one distribution is roughly $58,300. The factor drops by one each year after that.
Here is where trustees get into trouble. Taking only the minimum looks disciplined. Across nine years it moves something like $600,000 out of a $2 million account, and a portfolio that keeps growing replaces much of what leaves. The account arrives at year ten still holding the large majority of its value, and in year ten the entire remaining balance must be distributed.
That is one tax year absorbing well over a million dollars. Retained in the trust, effectively all of it lands in the 37% bracket, with the net investment income tax and California stacked on top. The same balance released across ten deliberate years, or paid to two children on their own returns, would have been taxed at a fraction of that.
Sometimes that cost is worth paying. A beneficiary in an unstable marriage, a child with a substance problem, or an heir who cannot manage money is a legitimate reason to accept it knowingly. The failure is not choosing the trust. The failure is arriving at the cost by accident, in year ten, with nothing left to do about it.
The minimum distribution is a floor set by statute. It was never a distribution plan, and treating it as one is how a decade of flexibility collapses into a single April.
When a trust is still the right answer
Trusts belong on IRA beneficiary forms in a narrow and identifiable set of circumstances:
- Minor children. A minor named directly cannot make distribution elections, and a court may require a guardian be appointed to act on their behalf.
- Beneficiaries who need protection from themselves. Creditors, a pending divorce, addiction, or an inability to manage a lump sum.
- Special needs beneficiaries. An applicable multi-beneficiary trust preserves life expectancy payouts for a disabled or chronically ill primary beneficiary and protects means-tested benefits.
- Blended families. A spouse named outright controls the account absolutely, including who inherits it next. If children from a prior marriage are meant to receive the remainder, only a trust guarantees it.
- Second-generation control. When the account owner wants a say in where the money goes after the primary beneficiary dies.
Notice what is not on that list: tax savings. There is no income tax advantage available through a trust that is not available without one. Every tax effect of naming a trust runs in the wrong direction.
Four things to check on your own form this week
- Pull the actual designation from the custodian, not the copy in your file. Custodian records govern, and they are wrong more often than clients expect after account transfers, rollovers, and platform migrations.
- Confirm no blank lines and no estate. If no living beneficiary is named when you die, the account passes under the default provision buried in the custodian's account agreement. Those defaults vary. Some route to a spouse, then children, then the estate. Others go straight to the estate. Read yours rather than assuming which kind you have.
- If a trust is named, find out which kind it is. Conduit and accumulation language lives in the trust document, not the beneficiary form. Most people who have named a trust cannot say which one they have.
- Check whether the trust was drafted before 2020. Conduit trusts written under the old stretch rules were designed to release small annual distributions across a beneficiary's lifetime. Under the 10-year rule, the same language now releases the entire account in a decade. The document does what it always said. The statute changed underneath it.
Where this belongs in a plan
The beneficiary designation is the single most consequential document in a retirement plan and the least supervised. Retail Wall Street treats it as paperwork, because at a brokerage it is paperwork. The form gets processed, the account gets flagged complete, and the coordination between the trust language, the distribution rules, and the family's tax picture never happens because no one there is responsible for it.
At California Retirement Advisors, that coordination is the work. The Family Estate Organizer® exists to put the trust documents, the beneficiary designations, and the account titling in one place where they can be read against each other. The Tax Management Journey® exists to model what those decisions cost across the next decade instead of discovering it on a Form 1041.
Christian R. Cordoba is a member of Ed Slott's Master Elite IRA Advisor Group, a designation held by a limited number of advisors nationally and built specifically around the distribution and beneficiary rules described above.
The 20-Minute Due-Diligence Q&A Call
If you hold a seven-figure IRA and a trust is named on it, twenty minutes is enough to establish whether the two documents agree with each other. Schedule a 20-Minute Due-Diligence Q&A Call with a licensed CRA advisor.