A custodial brokerage account lets a parent, grandparent, or other adult invest money on behalf of a minor, with the adult managing the account until the child reaches the age of majority

The adult who opens the account—called the custodian—buys and sells stocks, bonds, mutual funds, and other investments in the child's name. The child owns the assets legally, but cannot access or control them until they turn 18 or 21, depending on your state and the account type. The custodian has a legal duty to manage the money for the child's benefit, not their own.

Custodial accounts are common for saving toward education, a first car, or long-term wealth building. They are straightforward to open—most brokerages offer them online—and they come with tax consequences you should understand before funding one.

Key Takeaways

  • The custodian controls the account and makes all investment decisions until the child reaches the age of majority, which is 18 in most states but 21 in a few.
  • Money in a custodial account belongs to the child and counts as their asset for financial aid purposes, which can reduce the amount of aid they receive.
  • The first $1,250 of the child's investment income per year is typically tax-free, the next $1,250 is taxed at the child's rate, and anything above that may be taxed at the parent's rate.
  • Once the child reaches the age of majority, they gain full control of the account and can withdraw or spend the money however they choose.
  • There are two types: UGMA (Uniform Gifts to Minors Act) and UTMA (Uniform Transfers to Minors Act), with UTMA allowing a broader range of assets and a later transfer age in some states.

How the custodian's role works

As custodian, you have the power to buy, sell, and manage investments without asking the child's permission. You decide which stocks or funds to purchase, when to rebalance the portfolio, and when to take profits. You also handle all paperwork, tax reporting, and account maintenance.

Your legal obligation is to act in the child's interest, not your own. You cannot use the money to pay for things you would normally pay for anyway—like groceries or the child's regular school tuition—because that money is the child's property. You can use it for expenses that benefit the child directly and are not your legal responsibility, such as music lessons, summer camp, or a car for their use.

You cannot transfer the account to yourself, borrow from it, or invest it in ways that are risky or self-serving. If you violate this duty, the child or their legal representative can sue you after they reach the age of majority.

Tax treatment and the "kiddie tax" rule

Investment income in a custodial account is taxed to the child, not the custodian. For 2024, the first $1,250 of unearned income (dividends, interest, capital gains) is tax-free. The next $1,250 is taxed at the child's rate, which is usually lower than yours. Income above $2,500 is taxed at the parent's rate, a rule known as the kiddie tax.

This structure can make custodial accounts tax-efficient if you invest in low-income assets like growth stocks that do not pay dividends. It becomes less efficient if you hold bonds or dividend-heavy funds that generate high annual income.

You will receive a 1099 form each year reporting the child's investment income. The child (or you on their behalf) must file a tax return if income exceeds the threshold, even if no tax is owed. Talk to a tax professional about whether a custodial account makes sense for your situation.

Impact on financial aid and college costs

Money in a custodial account is counted as the child's asset when determining financial aid. Schools use the Free process for Federal Student Aid (FAFSA) to assess how much a family can contribute. Assets in the child's name reduce aid may be able to access more sharply than assets in the parent's name.

A rough rule: 20 percent of the child's assets count toward the expected family contribution, while only 5.64 percent of parent assets do. A $50,000 custodial account could reduce financial aid by roughly $10,000 per year, while the same amount in a parent's name would reduce it by about $2,800.

If college funding is your goal, you may want to explore 529 plans instead. These are education savings accounts with more favorable financial aid treatment and higher contribution limits. They also offer tax-free growth if used for may have access to education expenses.

UGMA versus UTMA accounts

Most states offer both UGMA (Uniform Gifts to Minors Act) and UTMA (Uniform Transfers to Minors Act) accounts. UTMA is the newer standard and is available in all 50 states; UGMA is older and available in most states.

The main differences are the types of assets allowed and the age at which the child takes control. UGMA accounts hold only cash, securities, and insurance contracts. UTMA accounts can hold real estate, artwork, patents, and other property. In most states, UGMA transfers to the child at 18 and UTMA at 21, though some states let you choose the age when you open the account.

For most people investing in stocks and funds, the difference is small. Choose UTMA if your state offers it and you want the extra flexibility and the later transfer age.

What happens when the child reaches the age of majority

On the date specified in your account documents—usually the child's 18th or 21st birthday—the account transfers to the child's full control. They can withdraw all the money, change the investments, or close the account entirely. You have no say in what happens next.

This is a hard important date. You cannot extend it or keep control of the money. If you want to continue managing money for the child after they turn 18, you would need to set up a separate arrangement, such as a trust, which requires legal documents and ongoing administration.

Some parents discuss their intentions with their children before the transfer date, explaining the purpose of the account and hoping the child will use it wisely. Others set up the account with the expectation that the child will make their own decisions once they have legal control.

How to open a custodial account

Most major brokerages—Fidelity, Charles Schwab, Vanguard, E*TRADE, and others—offer custodial accounts online. The process takes 15 to 30 minutes and requires the child's Social Security number, your identification, and basic information about both of you.

You will choose the account type (UGMA or UTMA), the state of residence, and the age at which the child takes control. You will also name yourself as custodian. Some brokerages allow you to name a successor custodian in case you die or become unable to manage the account; this is optional but worth considering.

Once the account is open, you can fund it by transferring money from your bank account or depositing a check. There are no annual contribution limits for custodial accounts, though gifts over $18,000 per year (for 2024) may trigger gift tax reporting. Consult a tax professional if you plan to fund the account with large gifts.

Frequently Asked Questions

Can I change my mind and take the money back after I fund a custodial account?

No. Once you transfer money into a custodial account, it belongs to the child legally. You cannot withdraw it for yourself or use it for your own expenses. If you need the money back, you have no legal right to it. This is why you should only fund a custodial account with money you are truly willing to give to the child.

What happens if the custodian dies before the child reaches the age of majority?

If you named a successor custodian when you opened the account, that person takes over. If you did not, the account may go through probate or be managed by a court-appointed guardian. To avoid complications, name a successor custodian when you open the account and tell that person they have been named.

Can the child's other parent or a grandparent also contribute to the account?

Yes, but only one person can be the custodian at a time. Other family members can give money to the account, and it will be added to the child's balance. The custodian continues to manage all the money. If you want multiple people to have equal control, you would need a trust instead of a custodial account.

Is a custodial account the same as a 529 college savings plan?

No. A custodial account is a general investment account with no restrictions on how the money is used. A 529 plan is designed specifically for education expenses and offers tax advantages if the money is used for tuition, fees, or room and board. A 529 also has better financial aid treatment than a custodial account.

Can I use custodial account money to pay for the child's regular expenses like food or school tuition?

Not if those are expenses you are legally required to provide. You can use it for extras like summer camp, music lessons, or a car, but not for basic living costs or mandatory education. The line can be blurry, so ask a tax professional if you are unsure about a specific expense.