Custodial Brokerage Accounts (UTMA/UGMA): The Flexible Way to Invest for Your Child

If you've already looked into 529 plans for your kid's college fund, you've probably noticed the catch: the money has to go toward qualified education expenses or you could face taxes and penalties. That's great if your child heads straight to a four-year university. But what if they don't?

A custodial brokerage account, usually set up under either the Uniform Transfers to Minors Act (UTMA) or Uniform Gifts to Minors Act (UGMA), gives you a different kind of flexibility. There are no restrictions on how the money is eventually used. Your child could use it for college, a trade program, a gap year, seed money for a business, or a first apartment.

This page is a starting point: a plain-language overview to help you decide whether a custodial account makes sense for your family and where the trade-offs are.

How a Custodial Brokerage Account Works

The concept is straightforward. You, or anyone else like grandparents, aunts, uncles, or friends, open an investment account in your child's name. An adult acts as the custodian, managing the investments until the child reaches the age set by state law. At that point, the child takes full control.

Because the account is a regular taxable brokerage account, not a tax-sheltered retirement or education account, you can invest in just about anything: stocks, bonds, mutual funds, ETFs, CDs, and more. Many parents keep it simple with low-cost index funds and let time do the compounding.

UTMA vs. UGMA: What's the Difference?

The distinction is fairly narrow. UGMA accounts can generally hold financial assets like cash, stocks, bonds, mutual funds, and insurance policies. UTMA accounts can hold all of that plus other property types like real estate and patents.

Most states have adopted UTMA, and it's the more common option today. South Carolina and Vermont are the two exceptions called out in the reference material, still using UGMA for new accounts. In practice, a major brokerage will usually set up whichever type your state requires.

Custodial Account vs. 529 Plan

These are not strictly competing accounts. Many families use both. But it helps to see them side by side so you know what each one is actually doing for you.

Neither account is objectively better. A 529 gives you stronger tax advantages and more long-term control. A custodial account gives the child more flexibility in how the money is eventually used. Many families end up using both.

What to Know About Taxes

Because a custodial account is a taxable investment account, earnings like interest, dividends, and capital gains can be taxable each year. The IRS has special rules, often called the "kiddie tax," that determine how a child's investment income gets taxed.

Here's the general framework for 2026:

For many families making modest recurring contributions to index funds, the tax impact in the early years can be small. But it becomes more important as the account grows or if large gifts and gains start accumulating.

When Your Child Takes Control

This is the part that makes some parents pause. Once your child reaches the termination age under your state's law, the account is theirs. Fully. They can spend it however they want, whether that's tuition, a used car, or something you would not have chosen.

In many states that age is 21. Some set it at 18. Others allow a later age within a range when the account is opened.

If handing over a meaningful balance to an 18- or 21-year-old makes you uneasy, you are not alone. Some families keep custodial accounts at more moderate balances, use 529 plans for the bulk of education savings, or start earlier conversations with their kids about money and responsibility.

A Note on Financial Aid

If your child may apply for need-based aid later, this matters. On the FAFSA, custodial account assets are generally considered the student's assets, which can reduce aid eligibility more than parent-owned assets like a 529.

One strategy some families consider is moving custodial funds into a custodial 529 for the same child. That can reduce aid impact in some cases because a custodial 529 is generally treated more like a parent asset on FAFSA, but selling investments to do that can trigger taxes, and once the money is in the 529 it becomes restricted to education uses.

This is one of those areas where talking to a financial advisor who understands your full picture can be worth it.

Where to Open a Custodial Brokerage Account

Most major brokerages make this easy, and you can usually open an account online in about 15 minutes. Here are three well-known options many parents start with.

American Kids is not affiliated with any of these brokerages and does not receive compensation if you open an account. They're here simply as a practical starting point.

Getting Started: What You'll Need

Opening the account itself is quick. Here's what to have ready:

• ☐Your child's Social Security number since the account is held under their SSN
• ☐Your own ID and information as the custodian
• ☐A funding source like a linked bank account or securities you want to move in
• ☐An investment plan, even a simple one like a total stock market index fund

Common Questions

What to Read Next

This guide is part of a growing library of parent-friendly financial resources. Here's where to go from here:

• ☐The New Baby Paperwork & Financial Checklist for every major form, deadline, and benefit in one place
• ☐How to Apply for Your Child's Social Security Number (SS-5) coming soon
• ☐Claiming Your Child as a Dependent coming soon
• ☐529 Plans Explained for the education-first side of the decision