A custodial account is a bank account opened and managed by an adult on behalf of a minor, with the adult holding legal control until the child reaches the age of majority.
The adult who opens the account—called the custodian—can deposit money, make withdrawals, and manage the account however they see fit. The minor's name appears on the account, but they have no legal authority over it while they are under 18 (or 21 in some states). The custodian acts as a fiduciary, meaning they are legally required to use the money for the child's benefit, though the law does not dictate exactly how that money must be spent.
Custodial accounts are commonly used for gifts from grandparents, inheritance, child support payments, or savings parents want to set aside for their children. When the child reaches the age of majority, the account transfers to them automatically, and they gain full control.
Key Takeaways
- A custodian (usually a parent or grandparent) opens and controls the account on behalf of a minor, and the money legally belongs to the child even though the adult manages it.
- The custodian can withdraw money and spend it on the child's needs, but must act in the child's best interest and cannot use the funds for personal expenses.
- When the child turns 18 or 21 (depending on state law and account type), the account automatically transfers to them with no further action required.
- Custodial accounts are simpler to set up than trusts and do not require a lawyer, but they offer less control over how the money is used after the child takes over.
How a custodian gets control and what they can do with the money
When you open a custodial account at a bank, credit union, or brokerage, you name yourself as the custodian and the minor as the account owner. The bank issues a debit card or checks in the custodian's name, and all transactions go through the custodian. You can deposit money whenever you want, withdraw it, and spend it on anything related to the child's care—food, school supplies, medical bills, sports equipment, or even a car.
The legal requirement is that you spend the money for the child's benefit. This is broad enough to cover most reasonable expenses, but it does not mean you can use the account as your own savings. If you withdraw $500 and spend it on your own groceries, you have violated your fiduciary duty. In practice, banks do not police this, but if the child later discovers misuse, they can pursue legal action after they turn 18.
Some custodians use these accounts to teach children about money by letting them see the balance grow, or by involving them in spending decisions once they are old enough to understand. Others keep the account entirely separate from the child's day-to-day awareness until the transfer happens.
The difference between custodial accounts and UTMA/UGMA accounts
Most custodial bank accounts are opened under either the Uniform Transfers to Minors Act (UTMA) or the Uniform Gifts to Minors Act (UGMA). These are state laws that define how custodial accounts work. UTMA is newer and more common; it allows you to hold a wider range of assets (real estate, intellectual property, life insurance) in the account. UGMA is older and limited mostly to cash, securities, and insurance.
When you open a custodial account at a bank, you will usually see a checkbox asking whether you want UTMA or UGMA. For a simple savings account, either works, but UTMA gives you more flexibility if you ever want to add other types of property later. The choice also affects the age at which the account transfers to the child—UTMA typically transfers at 21, while UGMA transfers at 18, though this varies by state.
What happens when the child turns 18 or 21
On the date the child reaches the age of majority (usually 18, sometimes 21), the custodial account automatically converts to a regular account in the child's name alone. The custodian's authority ends, and the child now owns and controls all the money. The bank will send notice of this transfer, and the child can then withdraw, spend, or invest the money however they choose.
This is a hard cutoff—there is no gradual handoff or option to extend the custodian's control. If you want the child to have guidance or restrictions on how they use the money after 18, a custodial account is not the right tool. A trust, set up with a lawyer, allows you to name a trustee who can manage the money longer and impose conditions (such as releasing funds only for college tuition). A custodial account is simpler and cheaper, but it gives the child full access at 18.
Tax treatment of custodial accounts
Money in a custodial account belongs to the child for tax purposes, even though the custodian controls it. This means any interest, dividends, or investment gains are taxed at the child's tax rate, which is usually lower than the parent's rate. For 2024, a child can earn up to a certain amount of unearned income (interest, dividends) before owing federal income tax; amounts above that are taxed, but often at a lower rate than a parent would pay.
The custodian does not report the account on their own tax return. Instead, the child (or the custodian on the child's behalf) files a tax return reporting the income. This is one reason custodial accounts are popular for saving money for children—the tax burden is lighter than if a parent held the money in their own name.
If the account holds investments that generate capital gains, those gains are also taxed to the child. Some custodians use this to their advantage, holding growth stocks in the account so gains compound at the child's lower tax rate.
Custodial accounts versus trusts and other savings tools
A custodial account is one of several ways to set money aside for a child. A 529 college savings plan is restricted to education expenses and offers tax breaks for that purpose. A trust gives you more control over when and how the money is released—you can require the child to reach age 25, or to use the money only for college, or to receive it in installments. A regular savings account in the parent's name is simpler but offers no tax advantage and is considered a parental asset if the child applies for financial aid.
Custodial accounts sit in the middle: they are easy to open (no lawyer needed), they offer a tax advantage, and they are flexible in how the money can be spent. The trade-off is that you lose control at 18, and the money counts as the child's asset for financial aid purposes. If you want more control or more restrictions, a trust is the better choice, though it costs more to set up.
Frequently Asked Questions
Can I close a custodial account before the child turns 18?
You can withdraw money from the account at any time, but you cannot close it or transfer it out of custodial status before the child reaches the age of majority. The account must remain in custodial form until the legal transfer date. If you need to move the money to a different bank, you can open a new custodial account and transfer the balance.
What happens if the custodian dies before the child turns 18?
The account does not automatically close. A successor custodian (usually named when the account was opened, or appointed by the court) takes over management until the child reaches 18. If no successor is named, the account may be frozen until a court appoints one. It is important to name a backup custodian when you open the account to avoid this delay.
Does a custodial account affect the child's financial aid for college?
Yes. Custodial accounts are considered the child's asset, and colleges count them when calculating financial aid. A child's assets reduce aid may be able to access more sharply than parental assets do. If financial aid is a concern, a 529 plan or a trust in the parent's name may be a better choice, as they are treated differently in aid calculations.
Can the child access the account before turning 18?
No. The child cannot withdraw money or make decisions about the account. Only the custodian can access it. Some custodians give older children a debit card linked to the account to teach spending habits, but this is the custodian's choice, not a legal right of the child.
Is there a limit to how much money I can put in a custodial account?
Banks do not limit the total balance in a custodial account. However, very large gifts may trigger gift tax reporting requirements. For 2024, you can give up to a certain amount per person per year without filing a gift tax return; amounts above that require a form to be filed (though no tax is usually owed). A tax professional can advise on your specific situation.