Retirement Accounts: Why You Almost Never Put Them Into a Trust
One of the most common mistakes families make when creating a trust is assuming that every asset should go into it. For most assets — real estate, bank accounts, brokerage accounts, business interests — that instinct is correct. For retirement accounts, it is almost always wrong. IRAs, 401(k)s, and other tax-advantaged retirement plans operate under a separate federal legal framework that makes trust ownership either impossible, tax-destructive, or both. This guide explains why retirement accounts stay outside your trust, how they coordinate with your overall estate plan, when naming a trust as beneficiary makes sense (and when it doesn’t), and what the SECURE Act changed about inherited retirement account planning.
Retirement accounts — IRAs, 401(k)s, 403(b)s, SEP IRAs, SIMPLE IRAs — are not transferred into a revocable living trust during your lifetime. Unlike a bank account or brokerage account, which can be retitled to the trust as owner, a retirement account’s tax-advantaged status is tied to the individual account holder. Attempting to change ownership of a retirement account to a trust is treated by the IRS as a taxable distribution: the entire account balance becomes immediately taxable income in the year of the transfer. For a $500,000 IRA, that can mean $150,000–$200,000 in federal and state income tax — gone instantly, plus potential early withdrawal penalties if the account holder is under 59½.
The correct approach is coordination, not transfer. Retirement accounts stay in the individual’s name and pass at death through beneficiary designations — not through the trust document, not through the will. The estate plan’s job is to ensure those beneficiary designations are correct, current, and integrated with the overall plan.
How Retirement Accounts Actually Work in an Estate Plan
Retirement accounts are non-probate assets — they pass directly to named beneficiaries outside the will, outside the trust, and outside the probate process entirely. This is both their greatest strength and the source of most planning mistakes. The beneficiary designation form — filed with the account custodian — is the operative legal document for a retirement account. Not the will. Not the trust. The beneficiary form.
This has two important implications. First, a retirement account with a properly named beneficiary avoids probate efficiently — no court involvement, direct transfer. Second, a retirement account with a missing, incorrect, or outdated beneficiary designation can create exactly the mess that the trust was designed to prevent: court involvement, delayed distribution, loss of tax advantages, and assets going to unintended recipients.
If your will says “everything to my spouse” but your IRA beneficiary form still names your former spouse from a prior marriage, your former spouse receives the IRA. The will does not override the beneficiary designation. The designation is the contract between you and the custodian, and it controls regardless of what your other estate planning documents say.
This is the single most common and most costly retirement account planning mistake. Beneficiary designations must be reviewed and updated after every major life event — marriage, divorce, death of a named beneficiary, birth of a child, and any significant change in the estate plan itself.
The SECURE Act: What Changed and Why It Matters for Your Beneficiaries
The Setting Every Community Up for Retirement Enhancement (SECURE) Act, enacted in December 2019 and significantly expanded by SECURE 2.0 in December 2022, fundamentally changed the rules for how inherited retirement accounts must be distributed. Understanding these rules is essential to making good beneficiary designation decisions.
Most non-spouse beneficiaries who inherit a retirement account on or after January 1, 2020 must withdraw the entire account balance within 10 years of the original owner’s death. There are no required annual distributions during the 10-year period (except for beneficiaries subject to RMD rules in the final years), but the account must be fully distributed by December 31 of the 10th year following the year of death.
The practical implication: a $600,000 IRA inherited by an adult child must be fully distributed within 10 years — generating substantial ordinary income for the beneficiary during that period, potentially pushing them into higher tax brackets, and eliminating the multi-decade tax-deferred growth that the “stretch IRA” used to permit. Strategic planning (spreading distributions over 10 years rather than taking them all at once, Roth conversion planning, charitable giving coordination) can mitigate the tax impact but cannot eliminate it.
Eligible Designated Beneficiaries (EDBs): Who Gets to Stretch
The SECURE Act created a category of “Eligible Designated Beneficiaries” who are exempt from the 10-year rule and may still use the prior “stretch” rules — taking distributions over their own life expectancy:
May roll the inherited IRA into their own IRA (treating it as their own account) or take distributions over their own life expectancy. The spousal rollover is almost always the most tax-advantaged option — it preserves the original account’s character and restarts the RMD clock based on the surviving spouse’s age.
May stretch distributions over their life expectancy until reaching the age of majority (21 under federal tax law for this purpose), at which point the 10-year rule kicks in for the remaining balance. Note: this exception applies to the account owner’s own minor children — not grandchildren or other minors.
A beneficiary who meets the IRS definition of disabled at the time of inheritance may take distributions over their own life expectancy. This is one of the key reasons a Special Needs Trust named as beneficiary can be advantageous — but the trust must be specifically drafted to preserve this treatment.
Similar to the disabled exception — a chronically ill beneficiary (meeting specific IRS criteria) may take distributions over their life expectancy rather than the 10-year window.
A non-spouse beneficiary who is no more than 10 years younger than the account owner (a sibling, close friend, or partner of similar age) may stretch distributions over their own life expectancy rather than being subject to the 10-year rule.
All other non-spouse beneficiaries — adult children, grandchildren, non-qualifying trusts, most other individuals — are subject to the 10-year rule. For many families, this means the retirement account will generate significant taxable income for the beneficiary during the 10-year window.
When a Trust Should Be Named as Beneficiary
Despite the general rule that trusts don’t own retirement accounts, there are specific situations where naming a trust as the beneficiary of a retirement account makes sound planning sense. Each situation requires trust language carefully drafted to address IRS requirements — a standard revocable living trust is not sufficient on its own.
- Minor children as ultimate beneficiaries — if the intended beneficiary is a minor child, a trust as beneficiary avoids the court conservatorship problem (the same issue that arises when minor children are named directly on any asset). The trust receives the retirement account, a trustee manages distributions, and the funds are distributed on your schedule rather than at age 18. The trust must qualify as a see-through trust (see below) and should be structured as a conduit or accumulation trust depending on the tax objectives.
- Special needs beneficiaries — for a beneficiary who is disabled or chronically ill and receiving government benefits, a properly drafted Special Needs Trust named as beneficiary can preserve both the inherited retirement account distributions and the beneficiary’s eligibility for Medicaid and SSI. This requires specialized drafting — the trust must qualify for the EDB exception applicable to disabled or chronically ill beneficiaries.
- Spendthrift and creditor protection — for a beneficiary with creditor exposure, substance abuse issues, or financial management concerns, a trust as beneficiary provides trustee control over distributions. However, this comes at a tax cost: the accumulated earnings in the trust are taxed at trust income tax rates — far lower than the threshold for individual taxpayers.
- Blended family planning — where the account owner wants to provide income to a surviving spouse while preserving the principal for children from a prior relationship, a properly drafted QTIP trust or similar structure can be used. This requires sophisticated planning to qualify under both trust law and IRS beneficiary distribution rules.
- Control over distribution timing and purpose — similar to a children’s trust, a trust as beneficiary allows the account owner to specify how and when distributions are made to the ultimate beneficiary, rather than leaving the beneficiary free to withdraw the entire balance at will within the 10-year window.
The See-Through Trust Requirement
If a trust is named as beneficiary of a retirement account, it must qualify as a “see-through trust” (also called a “look-through trust”) under IRS regulations to preserve the beneficiaries’ distribution options. A trust that doesn’t qualify is treated as a non-individual beneficiary — meaning the account must be fully distributed within 5 years of the owner’s death (if the owner died before their required beginning date) or over the owner’s remaining life expectancy (if after). In most cases, failure to qualify as a see-through trust accelerates distributions significantly.
The four requirements for see-through trust status:
- Valid trust under state law — the trust must be a valid legal trust under the law of the state where it was created.
- Irrevocable at the owner’s death — the trust must become irrevocable at the account owner’s death (a revocable living trust satisfies this because it becomes irrevocable when the grantor dies).
- Identifiable beneficiaries — the trust beneficiaries must be identifiable human beings (or qualifying EDB trusts for disabled/chronically ill beneficiaries). A trust with a charity as a potential beneficiary may fail this requirement.
- Documentation — the trust document (or a certified list of beneficiaries) must be provided to the retirement account custodian by October 31 of the year following the account owner’s death.
Within see-through trusts, there are two subtypes with meaningfully different tax treatment:
| Feature | Conduit Trust | Accumulation Trust |
|---|---|---|
| How distributions work | Required distributions pass through the trust directly to the individual beneficiary each year | Trustee can accumulate distributions inside the trust rather than passing them out immediately |
| Tax treatment | Beneficiary pays tax at individual rates — generally more favorable | Accumulated income taxed at compressed trust rates |
| Asset protection | Weaker — assets pass to beneficiary and become exposed to their creditors | Stronger — assets held in trust maintain spendthrift protection |
| Best for | Beneficiaries who are financially responsible; maximizing tax efficiency | Spendthrift concerns, creditor protection needs, or controlling distributions |
| SECURE Act interaction | 10-year rule applies based on oldest beneficiary; annual distributions required during window | 10-year rule applies; accumulated earnings face trust tax rates throughout |
Roth IRAs: Different Beneficiary Planning Considerations
Roth IRAs operate under the same SECURE Act distribution rules as traditional IRAs for inherited account purposes — non-spouse beneficiaries are generally subject to the 10-year rule. However, the tax impact is dramatically different:
The beneficiary must still distribute the entire account within 10 years — but those distributions are generally income tax-free (assuming the Roth has been held for at least 5 years). This means the primary planning objective with an inherited Roth is not tax minimization but investment growth maximization: leaving the account to grow tax-free for as long as possible within the 10-year window, then taking a lump sum in year 10 with no income tax consequence.
This is one reason Roth conversions during the account owner’s lifetime — paying the conversion tax now, while in a potentially lower bracket — can significantly benefit beneficiaries under the 10-year rule.
The Five Most Costly Retirement Account Mistakes
If no beneficiary is named on a retirement account at the owner’s death, the account passes to the estate by default — triggering probate, potentially eliminating favorable distribution options, and adding cost and delay. Many custodians require full distribution within 5 years when the estate is the beneficiary. For a $400,000 IRA, the entire amount could become taxable income within 5 years rather than being stretched over a beneficiary’s life or the 10-year window.
Fix: Name both a primary and a contingent beneficiary on every retirement account. Review designations annually and after any major life event. Never leave a beneficiary line blank.
Intentionally naming the estate as beneficiary — to coordinate with the will — eliminates the non-probate advantage entirely and typically forces accelerated distribution. The estate is treated as a non-individual beneficiary, triggering the 5-year rule (if owner died before RMD age) or the ghost life expectancy rule (if after). Either way, the result is faster, larger taxable distributions than naming an individual or qualifying trust would require.
Fix: Name individuals or a qualifying see-through trust as beneficiary — never the estate, and never the trust itself unless it has been specifically drafted to qualify.
A retirement account beneficiary designation is a contract and survives divorce in most cases (unlike life insurance in Missouri, which is governed by different automatic-revocation rules). If a Missouri resident divorces and does not update their IRA beneficiary designation, the former spouse typically remains the named beneficiary and will inherit the account on the owner’s death — regardless of the divorce decree, the will, or the trust. Federal law (ERISA) preempts state automatic-revocation statutes for most qualified plans; IRA treatment varies by state and custodian agreement.
Fix: Update all beneficiary designations immediately upon divorce — before the divorce is finalized if possible. Do not assume a divorce decree or new estate plan documents automatically change retirement account designations. They don’t.
Naming a minor child directly as retirement account beneficiary creates the same court conservatorship problem as naming a minor child directly on a life insurance policy. A court-appointed conservator manages the inherited account on behalf of the minor and distributes the full balance at age 18 — potentially triggering the entire 10-year distribution window to end in a lump sum at or shortly after adulthood. A properly drafted children’s trust as beneficiary avoids this outcome.
Fix: Name a qualifying see-through children’s trust as beneficiary for any minor child beneficiary — not the child directly. Ensure the trust is specifically drafted to handle inherited retirement account distributions.
Naming a standard revocable living trust as beneficiary — without specifically drafting the trust to address IRS see-through trust requirements and retirement account distribution mechanics — can result in the trust failing to qualify, triggering accelerated distributions, or generating income taxed at compressed trust rates rather than the beneficiary’s individual rates. A standard revocable trust designed to hold real estate and bank accounts is not designed for inherited retirement account administration.
Fix: If a trust will be named as retirement account beneficiary, it must be specifically drafted (or amended with a retirement account sub-trust provision) to address see-through trust qualification, conduit vs. accumulation election, and SECURE Act 10-year rule mechanics.
Beneficiary Designation Review Checklist
Use this checklist to audit your retirement account beneficiary designations against your estate plan:
Frequently Asked Questions
Is Your Retirement Account Coordinated With Your Estate Plan?
Beneficiary designations on retirement accounts are as important as the trust document itself — and they are updated and maintained separately. TrustFully.law reviews retirement account beneficiary designations as part of every estate plan, ensures trust-as-beneficiary structures are properly drafted for SECURE Act compliance, and coordinates IRA and 401(k) planning with the overall estate strategy. Serving the Greater St. Louis Area and all of Missouri.
Schedule Your Free Retirement Account Review →This article is provided for informational purposes only and does not constitute legal or tax advice. Retirement account rules are governed by the Internal Revenue Code, ERISA, and related regulations; the SECURE Act (Pub. L. 116-94) and SECURE 2.0 (Pub. L. 117-328) amended distribution rules significantly. Rules change frequently; consult a qualified estate planning attorney and financial advisor regarding your specific accounts and situation. The choice of a lawyer is an important decision and should not be solely based upon advertising.
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