Understanding Trust Funds for the Middle Class

“Trust fund” sounds like something for old money. But the families who most need a trust often look nothing like that: two working parents, a couple of young kids, a mortgage, two 401(k)s, and a term life insurance policy bought when the first baby arrived. If both parents died, that policy alone could leave the kids hundreds of thousands of dollars, and the law doesn’t let a child manage money. Without a plan, a court decides who does, and your child takes control of whatever is left at 18.

A trust is how you make those decisions yourself. This guide explains what a trust is in plain English, when a custodial account is all you need, and how a revocable living trust with a trust for your children inside it, often called a sub-trust, lets you choose who manages the money and when your kids receive it. It also covers what a trust won’t do and what it costs, so you can decide whether you need one or whether a will can do the job. It’s part of our section on account types, and Comparing Investment Accounts for Kids: 529 vs. UTMA vs. Roth IRA vs. 530A covers the accounts you’d use to save for your children in the meantime.

What a “trust fund” really is

A trust is a legal arrangement, governed by state law, in which one person holds and manages property for someone else’s benefit, as the Social Security Administration defines it. “Trust fund” is just everyday shorthand for money held that way. Every trust has three roles:

• The grantor, also called the settlor, creates the trust and writes its rules. For a family trust, that’s you.
• The trustee manages the property and follows those rules. With a living trust, that’s usually you too, for as long as you’re able.
• The beneficiaries are the people the trust is for. With your own living trust, that’s you during your lifetime and your children after you’re gone.

Two distinctions matter most for parents. A revocable trust can be changed or canceled whenever you like, and most living trusts are written that way; an irrevocable trust generally can’t be, and it’s used almost entirely for tax or asset-protection goals, according to the American Bar Association. And a living trust takes effect once you sign it and move property into it, while a testamentary trust is written into your will and doesn’t take effect until after you die, Nolo explains.

The part parents care about is the trust for their children. It’s often called a child’s trust, or a sub-trust when it sits inside a larger living trust: a set of instructions that springs to life only if a child inherits before reaching the ages you pick. If your children are already older than that when you die, it never comes into being, and they inherit directly, according to Nolo’s guide to leaving an inheritance to children. So a middle-class “trust fund” usually isn’t a pile of money set aside today. It’s a plan for who manages your money, and when your kids get it, if you’re not there to decide.

Why middle-class parents need a plan

Most parents haven’t made one. In Caring.com’s 2025 survey of more than 2,500 adults, only 24% said they had a will and 13% said they had a living trust, and most respondents with children under 18 had no estate planning documents at all. Among those without a will or trust, the biggest reasons were that it was low on their to-do list and that they didn’t feel they had enough to leave, according to Caring.com.

That second reason deserves a closer look. Thanks to life insurance, many parents would leave far more at death than they could hand over today, and home equity and retirement accounts add to it. A family with an ordinary income can leave young children a six-figure sum. It’s unlikely to happen to any one family, but it isn’t rare: about 1 in 11 U.S. children will experience the death of a parent or sibling by age 18, according to the 2026 Childhood Bereavement Estimation Model from Judi’s House/JAG Institute.

What happens without a plan

Children can’t legally manage an inheritance. If you leave money to a child under 18 without naming someone to manage it, a probate court appoints a property guardian, often but not always the child’s other parent, Nolo explains. A court-appointed guardian usually has to report to the court often and has limited say over how the money is managed. In California, for example, a guardian of a child’s estate must inventory and appraise the property, keep accurate financial records, and file regular accountings with the court, and the guardianship preserves the property until the child turns 18, the state’s Judicial Council explains.

Life insurance adds a wrinkle. Insurance companies won’t pay a death benefit to anyone under legal age, so money left to a child could go into a state-held trust until the child is an adult or a custodian is named, a process that takes time, North Carolina’s Office of State Human Resources warns. That’s true whether the child is the primary or the backup beneficiary, and most insurers won’t pay a child’s share even to a surviving parent until they receive court papers naming that parent as guardian, according to USAA.

Then comes the handoff. When the guardianship ends at 18, whatever is left is your child’s to control, and children who are 18 or older when they inherit get complete control unless your will or trust says otherwise, Nolo notes. For a sum large enough to change a young life, that’s the outcome most parents want to avoid.

Four ways to leave money to a child

Parents have four basic options for money their children might inherit. They differ in who manages the money, how involved a court is, and when your child takes over.

Swipe sideways to see all four options.

Based on Nolo, the American Bar Association, FINRA, and NerdWallet. Details vary by state.

The first column is what happens by default. The other three are choices you make now, and the rest of this guide explains when each one fits.

When a custodial account is enough

A custodial account under your state’s Uniform Transfers to Minors Act (UTMA) is the simplest way to hold money for a child. These accounts let adults transfer money and investments to minors without a formal trust, and every deposit is an irrevocable gift, FINRA reminds brokerage firms. A custodian you choose manages the account under rules set by state law, with no court overseeing day-to-day decisions, until your child reaches the age your state sets. UTMA vs. UGMA: What’s the Difference? explains how these accounts work, and The Ultimate Guide to Legalities for Custodial Accounts covers a custodian’s duties.

For money you and your relatives give your child while you’re alive, a custodial account or a 529 plan is usually all you need. A custodial account already belongs to your child, so your will doesn’t control it; if you die, a successor custodian takes over managing it. Naming Successor Custodians explains how to choose one.

A custodian can also handle a modest inheritance. You can name one in your will, in a living trust, or on a life insurance beneficiary form, with a single line along the lines of “to [custodian’s name], as custodian for [child’s name] under the [your state] Uniform Transfers to Minors Act,” Nolo explains. If relatively small amounts are involved, many states even let an executor set up a custodianship when you didn’t. And if the money would likely be spent by the time your child finishes college, a long-term plan may not be necessary, Nolo adds.

Where custodial accounts fall short

A custodial account has limits that matter more as the dollars grow:

• The age is set by law. A UTMA custodianship ends at 21 in most states and at 18 in a few, and a handful let you extend it to 25, Nolo notes. Then everything left is your child’s in one lump sum. What Happens at the Age of Majority? covers that handoff.
• Each account belongs to one child. You can’t pool siblings’ money and spend more on whichever child needs it most.
• You can’t add conditions. There’s no way to pay out in stages, tie money to school, or hold it back from a child who is struggling.
• It can cost a child with a disability their benefits. Supplemental Security Income (SSI) allows countable resources of no more than $2,000 for an individual, according to the Social Security Administration, and money a child owns, including a custodial account, generally counts. A supplemental needs trust funded by parents or relatives generally isn’t counted, as long as the child can’t end the trust or direct how the money is spent, the Special Needs Alliance explains.

This table matches common situations to the tool that usually fits.

Based on Nolo, AARP, the Social Security Administration, and the Special Needs Alliance. An estate planning attorney can tailor these to your state.

How a living trust with a child’s trust works

A revocable living trust is a document you sign now, naming yourself trustee of your own property. It works in two phases, and the child’s trust inside it matters only in the second.

While you’re alive

You move your major assets into the trust, which means changing titles and deeds into the trust’s name, and you keep managing them as before, since you’re the trustee, NerdWallet explains. You can change or cancel the trust at any time. You also name a successor trustee, who takes over if you become incapacitated or die. A power of attorney can cover incapacity too, though the handoff might go a little more smoothly with a trust, AARP notes.

After you’re gone

When you die, your successor trustee follows the trust’s instructions: pay final bills, then distribute or hold what’s left. Property in the trust passes without probate, the ABA notes, and probate is the court process that confirms a will, pays creditors, and distributes what’s left, as AARP describes it. For children who are still young, your trust can direct the trustee to keep each child’s inheritance in trust rather than hand it over. That’s the sub-trust, and you set its terms.

One pot or separate shares

With more than one child, you can give each child a separate trust from the start, or use a pot trust: a single pool for all of them, from which the trustee spends on whatever each child needs rather than equal amounts, much as parents do. A pot trust ends when the youngest child reaches an age you set, usually 18, and its main drawback is that older children must wait for their shares until then, Nolo explains. Some parents have each child’s share continue in its own trust after the split, so the older children’s money isn’t handed over all at once.

Rules for spending

Your trust tells the trustee what the money is for. Many trusts use a standard known as HEMS, short for health, education, maintenance, and support. Under it, a trustee can generally pay for things like health insurance premiums and orthodontics, tuition and tutoring, and a child’s rent or mortgage, but the standard isn’t limitless, law firm Ballard Spahr explains. You can add your own guidance too, such as help toward a first home, or a letter describing what you hope the money will do.

Many trusts also include a spendthrift clause, which limits the ability of a beneficiary, or a beneficiary’s creditors, to reach money while it’s still in the trust. Not every state recognizes these clauses, and states that do allow different exceptions, according to Cornell Law School’s Legal Information Institute.

Choosing when your child gets the money

This is where a trust earns its keep. Instead of a single handoff at 18 or 21, you choose the ages, and you can release the money in stages. One popular pattern pays a child in three installments: one at college graduation or age 22, one a few years later, and the last around 30, with the trustee free to pay for education and health care in the meantime, Nolo explains. Staging gives a young adult practice with a smaller sum before the rest arrives, so a mistake with the first installment isn’t a mistake with everything.

The chart compares that kind of schedule with the default outcomes. The example trust pays a third at 22, half of what’s left at 26, and the rest at 30, which splits the money into roughly equal installments.

• Managed by an adult for your child
• Your child’s to control

Show the numbers

Who controls an inheritance under each plan

Plan	An adult manages	Your child controls
No plan	All of it until 18	All of it from 18
UTMA custodian	All of it until 21 in most states	All of it from 21 (18 to 25, by state)
Example child’s trust	All until 22, two-thirds until 26, a third until 30	A third from 22, two-thirds from 26, all from 30

Shows who controls the money, not how much there is. The trust example assumes the balance holds steady; in practice the trustee spends on your child’s needs along the way while the rest stays invested. State ages for custodial accounts vary.

A few guidelines help when choosing the ages:

• Match the ages to the amount. A trust that lasts until 30 makes more sense for a large inheritance than for one that college will use up, as Nolo suggests.
• Think about your child’s maturity. Some young adults handle a large sum well and many don’t, and a lack of investing know-how can let money slip away too, Nolo points out.
• Don’t hold on too long. Keeping control until a child is 40 might breed resentment, and paying a trustee for many years can be expensive, Nolo cautions.
• Prepare your children either way. The “Wealth Transfer” Conversation has a script for talking with a teen about money they’ll receive, The Age-By-Age Playbook to Financial Literacy covers what to teach along the way, and The Hand-Off: Safely Withdrawing and Transitioning Wealth covers passing money to a young adult.

Choosing a trustee

Your trustee will invest the money, decide which expenses to pay, keep records, and file an income tax return for the trust each year, which makes the job more demanding than a custodian’s, Nolo notes. Look for someone organized, honest, and sensible about money who is likely to be around for as long as the trust lasts, and name at least one backup. Ask before you name them.

The trustee doesn’t have to be the person who raises your children. You name guardians for your children in a will, and a living trust can’t do that, Nolo explains, so parents with a living trust still need a will. Some parents deliberately split the roles, pairing a loving guardian with a financially steady trustee. The split matters most for divorced or separated parents. If you die leaving money to a child without a plan, the court often appoints the child’s other parent to manage it, but a trust lets you choose someone else. Protecting Assets in the Event of Divorce covers related steps.

A relative may serve for little or nothing. A bank or trust company charges fees but brings experience and staying power, and some families name a relative and a professional as co-trustees.

Funding the trust

A living trust controls only what you put into it or point toward it. If the transfers go wrong, the trust accomplishes nothing, Texas Tech law professor Gerry Beyer told AARP. Here’s how the assets most families own reach the trust.

Accounts with a named beneficiary pass by their forms, not your will, so check each one. Based on AARP, NerdWallet, Saving for College, FINRA, and federal law.

A few details are worth knowing:

• Your mortgage stays put. Federal law generally bars a lender from calling your home loan due because you move the house into a living trust that you remain a beneficiary of, under 12 U.S.C. § 1701j-3.
• Retirement accounts stay in your name. You usually don’t retitle a 401(k) or IRA into a trust, AARP notes, so it reaches your children through its beneficiary form. A minor child who inherits a parent’s account gets special treatment until 21, then must empty the account by the end of the 10th year after turning 21, under final IRS rules summarized by Voya. If you name a trust as a retirement account beneficiary, have it drafted with those rules in mind.
• A 529 plan needs a successor owner. Naming one lets the account pass without probate, and that person takes over all of your rights, including taking refunds and changing the beneficiary, Saving for College explains, so choose someone you trust. The Complete Guide to 529 College Savings Plans covers the rest.
• Custodial accounts stay out. The money is already your child’s, so it can’t move into your trust. Name a successor custodian instead.

What a trust won’t do

Living trusts are sometimes oversold, so it’s worth being clear about their limits:

• It won’t cut estate taxes. Because you can revoke a living trust, its assets still count as part of your estate, the ABA notes. For most families that’s moot: the federal estate tax basic exclusion is $15 million per person in 2026, according to the IRS.
• It won’t shield your assets from your own creditors. Generally, a trust must be irrevocable to protect assets from creditors, AARP clarifies.
• It won’t lower income taxes. After your death, a child’s trust files its own tax return, and income it keeps is taxed on a compressed schedule. In 2026, a trust reaches the top 37% rate on taxable income above $16,000, under IRS Revenue Procedure 2025-32, while a single person doesn’t reach that rate until $640,600. A good trustee plans investments and payouts with that in mind.
• It won’t override beneficiary forms. Life insurance, retirement accounts, and payable-on-death accounts go to the people named on their forms without probate, AARP notes, so your trust gets that money only if the forms name it.
• It won’t work unfunded. Anything left in your own name without a named beneficiary passes under your will, which is why you still need a simple backup will even with a trust, Nolo notes.

What it costs, and whether a will can do the job

A lawyer-drafted living trust typically costs more than $1,000, though a self-help tool can bring the cost down dramatically, according to Nolo, which sells one. Lawyers usually charge $1,000 to $2,500, Nolo attorney and editor Betsy Simmons Hannibal told NerdWallet. Compared with a will, a living trust also takes more time to set up and maintain, and it’s more trouble to change, Nolo adds.

Whether that’s worth it depends partly on what probate costs where you live, and that varies widely. In California, the law sets the fee for the estate’s lawyer by formula: 4% of the first $100,000, 3% of the next $100,000, and 2% of the next $800,000, figured on the estate’s gross value without subtracting a mortgage, under Probate Code section 10810. The executor can claim the same amount under section 10800. For a $400,000 estate, that’s $11,000 each, or $22,000 in all, and a typical California probate takes nine to 12 months, NerdWallet reports. Probate tends to be less burdensome in most other states, NerdWallet adds.

There’s also an honest case against a living trust. Nolo argues that living trusts often don’t make sense for middle-income people in decent health who are under 55 or 60, since a simpler will does the job in the unlikely event of an early death. Some attorneys believe the value of living trusts has been overstated, the ABA acknowledges. And if most of what you own is life insurance, retirement accounts, and other assets with named beneficiaries, which skip probate anyway, a will works fine, AARP says.

What parents of young children can’t skip is the child’s trust itself, and that doesn’t require a living trust. The same instructions can go in your will as a testamentary trust, which costs less up front. The trade-off is that a will-based trust must go through probate before it’s created, Nolo explains, so money meant for it can wait months, and your will becomes part of the public court record.

A living trust tends to earn its cost when probate is expensive where you live, when you own property in more than one state, or when you own assets that need ongoing management, such as a business, AARP suggests. If none of that applies, a will with a child’s trust, plus beneficiary forms that point to the right places, may be all you need for now. An estate planning attorney in your state can tell you which fits.

How a trust fits with your child’s accounts

A trust doesn’t replace the accounts you use to save for your children; it backs them up. A 529 plan is usually the most tax-efficient home for college savings, a custodial account holds gifts that are legally your child’s, and a custodial Roth IRA can work once your teen earns a paycheck. Comparing Investment Accounts for Kids lays out those options side by side.

The trust matters most for money in your own name. If you invest for your child in a brokerage account in your name, as Custodial Brokerage Accounts vs. Parent-Owned Taxable Accounts discusses, that money is legally yours, and your estate plan decides what happens to it. Naming your trust as the account’s transfer-on-death beneficiary, or retitling the account into the trust, keeps it earmarked for your kids and in a trustee’s hands until the ages you choose.

Grandparents can use the same tools. Rather than naming a grandchild directly in a will or on a beneficiary form, they can leave money to a trust for the grandchild, or to a custodian, for the same reasons. Discussing Wealth with Grandparents covers how to raise the subject.

Where family gifts fit in

Gifts from family raise the same question on a smaller scale: whose money is it, and who manages it if something happens to you? A few habits help:

• Keep a simple record of where gifts go, whether a 529 plan, a custodial account, or an account in your name set aside for your child, so your executor and trustee can follow the trail. Your GoodNest page can hold much of that record: each gift sent from it is written down, and you can record what you moved and where it went.
• Connect every account to your plan. Name successor owners and custodians, and point accounts in your own name to your trust.
• Tell relatives how to leave larger sums. A grandparent who wants to leave your child money in a will should name your child’s trust or a custodian, not your child.

GoodNest helps with the giving part: loved ones can give toward your child’s future from your child’s GoodNest page, often alongside a small keepsake like a book. GoodNest doesn’t hold or invest the money. Family send gifts straight to you by Zelle, Venmo, or PayPal, and you decide whether they go into a custodial account, a 529, or an account in your name; from there, that account’s rules and your estate plan take over. The GoodNest Guide to Asking for Investments Instead of Toys has scripts for the conversation, and Milestone Contributions maps which occasions suit which account.

One more thing to name while you’re at it. If family has sealed letters, voice notes, or videos in your child’s GoodNest time capsule, you can name a custodian for it on your child’s page: the person GoodNest can turn to if you can’t be reached. They can see that messages are being kept and when they open, never what they say. It can be the same person you trust as guardian or trustee.

The bottom line

A middle-class trust fund isn’t about wealth. It’s about control: who manages your children’s inheritance if you die while they’re young, and when they receive it. For gifts and modest sums, a custodial account, or a custodian named in your will, may be enough. Once life insurance, a home, and retirement accounts could leave your kids a six-figure sum, a child’s trust lets you choose the trustee and the ages, keep siblings’ money together, and pay it out in stages. Putting that trust inside a revocable living trust adds probate avoidance and a ready successor trustee; putting it in your will costs less but goes through probate first.

Whichever route you choose, start here:

1. Write a will that names a guardian for your children, and a backup.
2. Check every beneficiary form, including workplace life insurance and 401(k)s, and don’t name a minor child directly.
3. Choose a trustee, a backup trustee, and the ages at which your children should receive money.
4. Decide between a will-based trust and a living trust, and if you choose a living trust, fund it.
5. Review the plan after births, moves, divorces, and big purchases.

For the savings accounts that sit alongside your estate plan, head back to Comparing Investment Accounts for Kids.

Frequently asked questions

Do I need a trust if I’m not wealthy?

You might, if you have young children. A trust is less about wealth than about who manages your children’s inheritance and when they get it. Without a plan, a court appoints a guardian for money a minor inherits, and your child takes full control at 18. For small amounts, naming a custodian under your state’s Uniform Transfers to Minors Act may be enough. If life insurance, a home, or retirement accounts could leave your children a large sum, a child’s trust in your will or in a living trust lets you choose the trustee and the ages.

What is a sub-trust for minors?

It’s a trust for your children written inside a living trust or a will. It comes into existence only if a child inherits before reaching the ages you choose. Until then, a trustee you name manages the child’s share, can pay for things like education and health care, and hands the money over at the ages you set. If your children are already past those ages when you die, they inherit directly.

How much does it cost to set up a trust for my children?

A lawyer-drafted revocable living trust typically costs more than $1,000, and lawyers usually charge $1,000 to $2,500, though prices vary with where you live and how complicated your situation is. Self-help tools cost much less. A trust for your children written into a will usually costs less up front than a living trust, but it has to go through probate before it takes effect.

Can I name my children as beneficiaries on my life insurance?

You can, but it’s usually a mistake while they’re minors. Insurers won’t pay a death benefit directly to a child, so a court may need to appoint a guardian first, even if the child’s other parent is alive, and the child takes control at 18. Instead, name a trust for your children, or a custodian under your state’s Uniform Transfers to Minors Act, as the beneficiary or backup beneficiary.

At what age should my child get money from a trust?

There’s no single right answer, but many parents pay out in stages. One popular pattern makes three payments: one at college graduation or age 22, one a few years later, and the last around 30, while the trustee pays for education and health care in the meantime. Match the ages to the amount and to your child’s maturity, and avoid holding money back so long that it breeds resentment or runs up years of trustee fees.

Sources

• Social Security Administration, “Spotlight on Trusts” (2024 edition).
• American Bar Association, Real Property, Trust and Estate Law Section, “What is a Revocable Living Trust?”.
• Nolo, “Testamentary Trusts”.
• Nolo, “Leaving an Inheritance for Children”.
• Victoria Lurie, Caring.com, “2025 Wills and Estate Planning Study” (updated September 17, 2025).
• Judi’s House/JAG Institute with the New York Life Foundation, “Childhood Bereavement Estimation Model (CBEM)”, 2026 national results.
• Judicial Council of California, Form GC-206-INFO, “Information on Probate Guardianship of the Estate” (January 1, 2023).
• North Carolina Office of State Human Resources, “Minor Beneficiaries: What You Should Know”.
• Mikel Van Cleve, USAA, “Can minors be beneficiaries on life insurance?” (updated February 23, 2026).
• FINRA, Regulatory Notice 20-07, “FINRA Reminds Member Firms of Their Responsibilities for Supervising UTMA and UGMA Accounts” (February 27, 2020).
• Social Security Administration, “Understanding Supplemental Security Income SSI Resources” (2026 edition).
• Special Needs Alliance, “The Social Security Administration’s Special Needs Trusts Review Process”.
• Liz Weston, NerdWallet, “Probate Workarounds Can Save Your Heirs Time and Money” (July 16, 2020), originally published by the Associated Press.
• Jane Bryant Quinn, AARP, “The Pros and Cons of Living Trusts” (October 22, 2019, with a later clarification on creditors).
• Ballard Spahr, “Understanding the HEMS Standard in Trusts” (February 2025).
• Legal Information Institute, Cornell Law School, Wex, “spendthrift clause”.
• Nolo, “What is the difference between a revocable living trust and a will? And which should you make?”.
• Legal Information Institute, Cornell Law School, 12 U.S. Code § 1701j-3, Preemption of due-on-sale prohibitions.
• Voya, “IRS issues final regs on RMDs and proposed regs on SECURE 2.0 RMD provisions”.
• Saving for College, “Choosing a successor account owner for a 529 plan”.
• Internal Revenue Service, “IRS releases tax inflation adjustments for tax year 2026, including amendments from the One, Big, Beautiful Bill”, IR-2025-103 (October 9, 2025).
• Internal Revenue Service, Revenue Procedure 2025-32, 2026 inflation adjustments, including the income tax rate schedule for estates and trusts.
• Nolo, “Why You May Not Need a Living Trust”.
• FindLaw, California Probate Code § 10810, compensation of the attorney for the personal representative.
• FindLaw, California Probate Code § 10800, compensation of the personal representative.

This article is for general educational purposes only and is not legal, tax, or financial advice. Trust, custodial account, guardianship, and probate laws vary by state, and the right plan depends on your family, your assets, and where you live. Figures reflect federal rules for 2026 as of the date above. GoodNest does not provide legal, tax, or investment advice and does not hold or invest funds. For your family’s situation, consider consulting an estate planning attorney licensed in your state.