A custodian account is a bank or investment account held in a child's name but controlled by an adult until the child reaches a certain age

The adult — usually a parent, grandparent, or other relative — manages the money, makes deposits and withdrawals, and decides how it is invested. The child owns the money legally, but cannot access it or make decisions about it until they reach the age set by state law, typically 18 or 21. This structure lets you save for a child's future while keeping the money protected and separate from your own accounts.

Custodian accounts are common for gifts, inheritance, or regular savings you want to set aside for a child's education, first car, or other future needs. They are simpler and less formal than trusts, and most banks and investment firms offer them.

Key Takeaways

  • A custodian account is owned by the child but controlled by the adult you name as custodian until the child reaches the age of majority in your state.
  • The custodian can deposit money, withdraw it for the child's benefit, and decide how to invest it, but cannot use the money for their own purposes.
  • When the child reaches the age set by state law — usually 18 or 21 — they gain full control of the account and the custodian's role ends.
  • Custodian accounts are offered by most banks and investment firms and require only basic paperwork to open.
  • Money in a custodian account may affect how much financial aid a child receives for college, since it is counted as the child's asset.

How a custodian account differs from a regular savings account

In a regular savings account held by a parent, the parent owns the money outright. In a custodian account, the child is the legal owner from the start, even though they cannot touch it yet. This matters for taxes, financial aid, and what happens if the custodian dies or becomes unable to manage the account.

A custodian account also has built-in protection: the money cannot be seized to pay the custodian's debts, and if the custodian dies, the account automatically passes to the child — it does not go through the custodian's will or estate. With a regular parental account, the money is at risk if the parent faces legal or financial trouble.

The two main types of custodian accounts

The Uniform Gifts to Minors Act (UGMA) account is the older standard. It allows you to hold cash, stocks, bonds, and mutual funds in a child's name. When the child reaches the age of majority in your state — usually 18 or 21 — they take full control.

The Uniform Transfers to Minors Act (UTMA) account is newer and broader. It covers everything UGMA does, plus real estate, artwork, and other property. UTMA is available in most states and has largely replaced UGMA, though both still exist. The rules are similar: the child takes control at the age of majority, which varies by state.

Ask your bank or investment firm which one they offer. Most will set up whichever you request, and the process is straightforward — you provide the child's Social Security number, your own information, and sign the paperwork.

What the custodian can and cannot do

As custodian, you can deposit money into the account, withdraw funds for the child's benefit, and decide how the money is invested. "For the child's benefit" means expenses directly tied to the child — school tuition, medical bills, sports equipment, a car for college. You cannot withdraw money to pay your own rent, credit card bills, or other personal expenses, even if you plan to repay it later.

The line between allowed and forbidden is not always sharp, and different custodians interpret it differently. If you are unsure whether a planned withdrawal is appropriate, contact the bank or investment firm holding the account — they can tell you what their policy is. Some custodians are stricter than others.

You also cannot change who the money goes to. Once you name the child as the account owner, that designation is permanent. If you want the money to go to a different child or person if something happens to you, you need a separate legal document like a will or trust.

What happens when the child turns 18 or 21

On the date set by your state's law, the child's right to the account becomes absolute. The custodian's control ends, and the child can withdraw all the money, close the account, or leave it open and manage it themselves. You cannot prevent this transfer, and you cannot extend your control past the legal age.

This is one reason some parents hesitate to open custodian accounts — they worry the child will spend the money unwisely. If you want more control over when and how the money is used, a trust (set up with a lawyer) gives you more options. A custodian account is simpler and cheaper, but it comes with less control.

Before the child reaches the age of majority, the bank will usually send you a notice reminding you of the upcoming transfer. Some banks require you to help the child set up a new account or move the money. The process is usually straightforward, but it is worth asking the bank in advance what they will need from you and the child.

Tax and financial aid considerations

Money in a custodian account is taxed as the child's income, not yours. This can be an advantage if the child has little or no other income — the first portion of earnings is usually tax-free, and the rest is taxed at the child's (lower) rate rather than yours. However, if the account earns significant investment income, the child may owe taxes, and you will need to file a tax return for them.

For college financial aid, custodian accounts are treated as the child's assets. This means they count more heavily against aid than parental assets do. If you are saving for college and think your child will need financial aid, a custodian account may reduce the amount they receive. Some families use other savings vehicles — like 529 plans held in the parent's name — to avoid this penalty. Talk to a financial advisor or the college's financial aid office if this is a concern.

How to open a custodian account

Contact a bank, credit union, or investment firm and ask to open a custodian account under UGMA or UTMA. You will need the child's full name, date of birth, and Social Security number. You will also need to provide your own identification and information, since you are the custodian.

The bank will have you sign a custodian agreement — a short document that confirms you understand the rules and that the money belongs to the child. There is usually no fee to open the account, though some investment firms charge annual fees if the balance is small. Ask about fees before you open it.

Once the account is open, you can deposit money by check, transfer, or direct deposit, just like a regular account. You will receive statements in your name as custodian, and you can manage the account online or by phone.

Frequently Asked Questions

Can I name someone else as custodian if something happens to me?

No. The custodian account does not have a backup custodian built in. If you die or become unable to manage the account, the account itself does not disappear — the money still belongs to the child — but there may be confusion about who can access it. To avoid this, name a custodian in your will or talk to the bank about their succession policy. Some banks allow you to name a successor custodian when you open the account.

Can I change my mind and take the money back?

No. Once you put money into a custodian account in the child's name, it is a gift. You cannot reclaim it. If you are not ready to give the money away permanently, do not open a custodian account — use a regular savings account in your name instead.

What if the child is not my biological child?

You can open a custodian account for any child — a stepchild, grandchild, niece, nephew, or unrelated child. You will need their Social Security number and permission from their parent or legal guardian. The rules are the same regardless of the relationship.

Can I have more than one custodian account for the same child?

Yes. You can open multiple custodian accounts at different banks or investment firms, and different people can each open one for the same child. Each account is separate, and when the child reaches the age of majority, they will have control of all of them.

Does the child know the account exists?

Not necessarily. Many parents open custodian accounts without telling the child, especially if the child is very young. Others tell the child as they get older, to teach them about saving. There is no legal requirement either way — it is your choice.