Minors cannot open a savings account alone in the United States

A minor—anyone under 18—cannot sign a binding contract, and a savings account is a contract between you and the bank. Every bank in the US requires at least one parent or legal guardian to open an account for someone under 18. The adult's name goes on the account, they sign the paperwork, and they have full legal control until the minor reaches the age of majority (18 in most states, 19 in Alabama and Nebraska, 21 in Mississippi).

This is not a bank policy choice. It is a legal requirement. A minor cannot be held to the terms of an account they opened alone, which means the bank has no way to enforce those terms. Banks will not take that risk.

What a minor can do is have a parent or guardian open a custodial account—an account in the minor's name but controlled by the adult until the minor comes of age. The minor can deposit money, make withdrawals (within limits the parent sets), and build savings and credit history. The parent or guardian handles the paperwork and retains legal authority over the account.

Key Takeaways

  • A parent or legal guardian must be present and sign all paperwork to open any savings account for a minor under 18.
  • Custodial accounts are held in the minor's name but controlled by the adult until the minor reaches 18 (or 19 or 21, depending on state).
  • The minor can use the account to deposit and withdraw money, but the parent retains legal authority and can set withdrawal limits.
  • Once the minor reaches the age of majority, the account converts to a standard account in their name alone, and the parent's control ends.

What happens when you turn 18

When a minor reaches the age of majority in their state, the custodial account automatically converts to a standard account in their name. The parent's name comes off, and the young adult now has full legal control. The bank will send paperwork explaining the change, though the process is usually automatic and requires no action from either party.

Some banks require the young adult to visit in person or sign new documents to acknowledge the change. Others handle it entirely on their own. Call your bank before the birthday to ask what to expect and whether you need to do anything.

The account balance, transaction history, and account number typically stay the same. Any debit card or checks issued under the custodial account may stop working briefly while the bank reissues them in the new account holder's name alone.

Types of accounts parents can open for minors

Most banks offer a custodial savings account, which is the simplest option. Money sits in the account and earns interest (usually very little at major banks). The parent can set rules about when the minor can withdraw, though they cannot prevent the minor from accessing their own money once they reach 18.

Some banks and credit unions offer teen checking accounts, which come with a debit card and online access. These are designed for minors who need to spend money regularly rather than just save it. The parent can monitor transactions and set spending limits through the bank's app.

A few institutions offer custodial investment accounts (sometimes called Uniform Transfers to Minors Act accounts, or UTMA accounts), which allow the parent to invest the minor's money in stocks, bonds, or mutual funds. These are less common at retail banks and more common at investment firms. They carry more risk than savings accounts but can grow faster over time.

What documents the parent needs to bring

The parent or guardian will need to bring a government-issued photo ID (driver's license, passport, or state ID) and proof of address (a recent utility bill, lease, or bank statement). Some banks also ask for the minor's Social Security number, which the parent should have on file.

If the account is being opened by a legal guardian who is not the parent, the bank may ask for proof of guardianship—usually a court order or custody document. Call ahead to ask what your specific bank requires, because requirements vary.

The parent will sign all paperwork on behalf of the minor. The minor does not need to sign anything, though some banks ask the minor to be present so they understand the account is being opened in their name.

How minors can use the account

Once the account is open, the minor can deposit money by handing cash or checks to the parent, who deposits them, or by using an ATM if the bank issues a debit card. Many teen checking accounts come with a debit card automatically; savings accounts usually do not unless the parent requests one.

Withdrawals work the same way. The minor can use a debit card at an ATM or point of sale, or ask the parent to withdraw cash. The parent can set daily or monthly spending limits through the bank's app, which will prevent the debit card from working once the limit is reached.

The minor can see the account balance and transaction history online or through the bank's mobile app if the parent sets up access. This teaches the minor to track spending and understand how money moves. The parent can see everything the minor does and can freeze the card or account if needed.

Age limits and when the account must change

The custodial account exists only while the minor is under the age of majority in their state. In most states, that is 18. In Alabama and Nebraska, it is 19. In Mississippi, it is 21. On that birthday, the account automatically converts.

Some banks allow the parent to keep a joint account with the young adult after they reach 18, if both parties agree. This is different from a custodial account—both names remain on the account, and both have equal legal authority. But a custodial account itself cannot continue past the age of majority.

If the minor moves to a different state before reaching the age of majority, the account remains valid under the rules of the state where it was opened. The conversion still happens on the birthday set by that state's law, not the new state's law.

What happens if a parent dies or loses custody

If the parent who opened the custodial account dies, the account does not automatically close. The minor's other parent, a legal guardian, or the executor of the parent's estate can take control of the account. Contact the bank when ready with a death certificate and proof of the new guardian's authority.

If custody changes—for example, if a grandparent becomes the legal guardian—the original parent's name can usually be removed from the account and the new guardian's name added. The bank will ask for court documents proving the custody change. Until that paperwork is filed, the original parent retains legal authority.

If both parents die and no guardian is named, the account may be frozen until a court appoints a guardian. This is rare, but it is why naming a guardian in a will matters for families with minors.

Frequently Asked Questions

Can a minor open a savings account with just a grandparent or other relative?

Yes, if that person is the legal guardian. If they are not, they cannot open an account on the minor's behalf. A legal guardian is someone a court has appointed, not just someone who helps raise the child. If you are unsure whether someone is a legal guardian, ask the bank what proof they need.

What if the parent refuses to open an account for the minor?

A minor cannot open one alone. If the parent will not cooperate, the minor can ask another legal guardian, a grandparent with custody, or a court-appointed guardian to open the account instead. If no adult will help, the minor will have to wait until they turn 18.

Can a minor have their own account without the parent's name on it?

No. The parent's or guardian's name must be on the account because they are signing the contract. Once the minor reaches 18, the parent's name comes off and the account becomes the minor's alone. Until then, the adult is legally responsible for the account.

Do both parents have to sign if the minor has two parents?

No. Usually one parent can open the account alone. If both parents have custody, either one can typically open it without the other's permission. If custody is split or contested, the bank may ask for court documents showing who has the authority to make financial decisions for the minor.

Can a minor open an account online without going to the bank?

Some banks allow the parent to open a custodial account online, but most still require at least one in-person visit to verify the parent's identity and the minor's presence. Call your bank to ask whether they offer fully online account opening for minors, as this varies widely.