Custodial Bank Accounts: How to Set One Up for Your Child

A custodial bank account is a savings or checking account an adult opens and manages for a minor, where the money legally belongs to the child from the first deposit. You can open one at most banks in about 15 minutes with your ID, the child's Social Security number, and an opening deposit, and you'll manage it until your child reaches the age of majority in your state.

The part most parents miss is what happens at the end. Every dollar you put in is an irrevocable gift, and when your child hits 18 or 21 depending on your state, they get full control and can spend it on anything they want.

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Key Takeaways

• The money is your child's from day one. Contributions are irrevocable gifts, so you can't take them back or redirect them later.

• Control transfers automatically at the age of majority. Depending on your state, that's usually 18 or 21, and your child can then use the money however they choose.

• You'll need the child's Social Security number to open one. Most banks also require your ID, an opening deposit, and about 15 minutes.

• Earnings are taxed under the kiddie tax rules. In 2026, the first $1,350 of unearned income is tax-free, the next $1,350 is taxed at your child's rate, and anything above $2,700 is taxed at yours.

• It can reduce college financial aid. Custodial assets count as your child's, which FAFSA assesses at up to 20%, versus about 5.64% for parent-owned assets.

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What Is a Custodial Bank Account?

A custodial bank account is a savings or checking account that an adult, called the custodian, opens and manages on behalf of a minor who legally owns the money. It's created under state law through either the Uniform Transfers to Minors Act (UTMA) or the older Uniform Gifts to Minors Act (UGMA), and the custodian controls it until the child comes of age.

The distinction between the two acts matters less than it sounds. UGMA covers financial assets like cash and securities, while UTMA adds real estate, art, and other property. Most states use UTMA, and your bank will simply open whichever applies where you live.

How Does a Custodial Account Differ From Other Accounts for Kids?

A custodial account differs from other kids' accounts mainly in who owns the money and who controls it. A joint account keeps you as a co-owner with access to the funds, while a custodial account transfers ownership to your child permanently, with control passing to them at a set age.

How Do You Open a Custodial Bank Account for Your Child?

You open a custodial bank account by choosing a bank, providing your identification and your child's Social Security number, and funding it with an opening deposit. Most banks and credit unions offer them, the process takes about 15 minutes online or in a branch, and many accounts carry no minimum balance requirement.

Here's what the process looks like.

• Choose a bank or credit union. Compare interest rates, monthly fees, and minimum balance requirements, since a fee-heavy account can quietly erode small balances.

• Gather your documents. You'll need your government-issued ID, your Social Security number, and your child's Social Security number and birth date.

• Select the account type. Confirm whether your state uses UTMA or UGMA, though the bank will typically handle this for you.

• Name the custodian. This is usually a parent, but a grandparent or another adult can serve. Name a successor custodian if the bank allows it.

• Fund the account. Make your opening deposit, then set up recurring transfers if you want to contribute steadily.

• Set up online access. Enroll in online banking so you can track the balance and, when the time comes, walk your child through it.

What Do You Need to Open a Custodial Account?

You need surprisingly little to open a custodial account. Banks typically ask for your government-issued photo ID, your Social Security number, your child's Social Security number and date of birth, your address, and an opening deposit, which at many institutions is as low as $25 or nothing at all.

The child's Social Security number is the one item people get stuck on. Since the account is legally your child's, the interest is reported under their number, so you'll need it before you can open the account.

How Is a Custodial Account Taxed?

A custodial account is taxed under the kiddie tax rules, because the money is your child's. For 2026, the first $1,350 of unearned income like interest is tax-free, the next $1,350 is taxed at your child's rate, and any unearned income above $2,700 is taxed at your marginal rate.

For a typical custodial savings account, this rarely bites. At today's rates, a balance would need to be substantial to throw off $1,350 in annual interest, so most families never approach the threshold. Larger balances and investment accounts generating dividends and capital gains are where it becomes a real consideration.

The tax filing works one of two ways once you cross the threshold.

• Your child files their own return using Form 1040 with Form 8615 attached to calculate the kiddie tax.

• You report their income on your return using Form 8814, though this can push your own taxable income higher.

There's also a gift tax angle. Every contribution counts as a completed gift, and in 2026 you can give up to $19,000 per child, or $38,000 as a married couple, without filing a gift tax return. Exceeding that means filing Form 709, though you'd rarely owe actual tax.

What Happens When Your Child Reaches the Age of Majority?

When your child reaches the age of majority, the account legally becomes theirs outright and your role as custodian ends. They gain full control and can withdraw the money for anything at all, whether that's the college fund you envisioned or something else entirely.

The age varies by state, typically 18 or 21, and some states let you extend it to 25 if you specify that when you open the account. It's worth checking your state's rule before you start, because that single detail determines how much financial maturity your child will have when the money lands in their hands.

What Are the Pros and Cons of a Custodial Account?

A custodial account offers flexibility and simplicity that education-specific accounts don't, but it trades away control permanently. The money can be used for anything that benefits your child rather than tuition alone, though you give up any say over how it's spent once they come of age.

The upside

• No contribution limits and no restrictions on how the money is used

• Simple to open, with no complex trust paperwork or legal fees

• Anyone can contribute, including grandparents and relatives

• Some tax advantage over holding the money in your own account

The trade-offs

• Contributions are irrevocable, so you can't reclaim the money

• Your child gains full control at the age of majority, no matter their plans

• Custodial assets can reduce college financial aid more than parent-owned assets

• Earnings are taxable each year, unlike a 529 plan

How Does a Custodial Account Affect Financial Aid?

A custodial account can reduce your child's financial aid, because FAFSA counts it as a student asset rather than a parent asset. Student assets are assessed at up to 20% in the aid formula, while parent-owned assets like a 529 plan are assessed at roughly 5.64%, so the same dollars cost more aid in a custodial account.

The gap matters at scale. A $50,000 custodial balance could reduce aid eligibility by around $10,000, where the same amount in a parent-owned 529 would reduce it by less than $3,000. If college is the specific goal, a 529 is usually the better structure.

Should You Open a Custodial Account or a 529 Plan?

Whether you open a custodial account or a 529 comes down to what the money is for. A 529 wins when you're saving specifically for education, thanks to tax-free growth on qualified expenses and lighter financial aid treatment. A custodial account wins when you want flexibility beyond tuition.

• Choose a custodial account if the money is a general gift, might fund a car, a first apartment, or a business, or if you want no restrictions on its use.

• Choose a 529 plan if the money is earmarked for education, you want tax-free growth, or you want to keep control indefinitely.

Some families use both, funding a 529 for tuition and a smaller custodial account for everything else.

Key Terms to Know

• Custodial account. A financial account an adult manages for a minor who legally owns the assets, created under UTMA or UGMA.

• Custodian. The adult who manages the account until the child reaches the age of majority, usually a parent or grandparent.

• UTMA (Uniform Transfers to Minors Act). The state law most states use for custodial accounts, allowing cash, securities, real estate, and other property.

• UGMA (Uniform Gifts to Minors Act). The older, narrower version limited to financial assets like cash and securities.

• Age of majority. The age at which your child takes full legal control of the account, usually 18 or 21 depending on your state.

• Irrevocable gift. A transfer you can't undo. Every custodial contribution is one, so the money legally belongs to your child immediately.

• Kiddie tax. The rule taxing a child's unearned income above $2,700 in 2026 at the parent's marginal rate.

• Unearned income. Money from investments rather than work, such as interest, dividends, and capital gains.

• Annual gift tax exclusion. The amount you can give per person each year without filing a gift tax return, which is $19,000 in 2026.

Frequently Asked Questions

Can I take money out of my child's custodial account?

You can withdraw from a custodial account, but only for expenses that benefit your child. The money legally belongs to them, so using it for your own expenses isn't permitted, and contributions can't be reclaimed.

At what age does my child get the money?

Your child gets full control at the age of majority, which is typically 18 or 21 depending on your state. Some states allow you to extend it to 25 if you specify that when opening the account.

Do I need my child's Social Security number to open a custodial account?

You do need your child's Social Security number, since the account is legally theirs and interest is reported under their number. You'll also need your own ID and Social Security number as the custodian.

Is a custodial account better than a savings account in my name?

A custodial account offers modest tax advantages and makes the gift permanent, while an account in your name keeps you in control indefinitely. If flexibility to change your mind matters, your own account may suit you better.

Can grandparents open a custodial account for my child?

Grandparents can open and fund a custodial account as the custodian. Each grandparent gets their own $19,000 annual gift tax exclusion per grandchild in 2026, which makes it a common way to pass down money.

What happens to the account if the custodian dies?

If the custodian dies, a successor custodian takes over, which is why naming one when you open the account matters. Without a named successor, a court may need to appoint one, which adds delay and expense.

Sources

• Internal Revenue Service: Topic no. 553, Tax on a child's investment and other unearned income (kiddie tax)

• Internal Revenue Service: Instructions for Form 8615

• Internal Revenue Service: Frequently asked questions on gift taxes

• Federal Student Aid: StudentAid.gov

• Consumer Financial Protection Bureau: Money as You Grow