A child cannot open a high-yield savings account alone, but a parent or guardian can open one in the child's name

High-yield savings accounts pay significantly more interest than standard savings accounts — often 4% to 5% annually, compared to 0.01% at many traditional banks. A child cannot sign the paperwork or meet the account requirements independently, but parents and guardians can open these accounts as custodial accounts, meaning the child owns the money while the adult manages it until the child reaches the age of majority (usually 18 or 21, depending on state and the financial institution).

The account belongs to the child legally and for tax purposes, but the parent controls deposits, withdrawals, and investment decisions. This structure lets you build savings for your child while taking advantage of higher interest rates that would otherwise be locked away in a regular savings account earning almost nothing.

Key Takeaways

  • A parent or guardian opens a custodial high-yield savings account in the child's name, with the adult as the account manager until the child reaches adulthood.
  • You will need the child's Social Security number, proof of identity for yourself, and proof of address to open the account.
  • Most online banks offer custodial high-yield savings accounts, though some traditional banks do not, so you may need to shop across institutions.
  • Money in a custodial account belongs to the child for tax purposes, which can affect financial aid calculations for college.
  • The child typically gains full control of the account at age 18 or 21, depending on your state and the bank's rules.

What you need to open a custodial high-yield account

The financial institution will ask for your child's Social Security number, date of birth, and full legal name. You will also need to provide your own identity documents — usually a driver's license or passport — and proof of your current address, such as a utility bill or bank statement dated within the last 60 days.

Some banks require you to verify your identity online through a video call or by uploading documents. Others accept applications entirely through their website. The process typically takes 5 to 10 minutes, and the account opens within one to three business days. You can then deposit money when ready, either by transferring from another account or by mailing a check.

Which banks offer custodial high-yield savings accounts

Online banks are more likely to offer custodial accounts than traditional brick-and-mortar banks. Marcus by Goldman Sachs, Ally Bank, American Express Personal Savings, and Discover Bank all offer custodial high-yield savings accounts. Rates and minimum deposit requirements vary — some have no minimum, while others require $25 or $100 to open.

Call or check the website of your current bank before assuming they do not offer custodial accounts; some do, but do not advertise them prominently. If your bank does not offer them, opening an account at an online bank takes the same time as opening any other account and does not require a branch visit.

How the account works once it is open

You control all transactions: you decide when to deposit money, when to withdraw it, and how much stays in the account. The interest accrues monthly or daily, depending on the bank, and is added to the balance automatically. You can set up automatic transfers from your checking account if you want to build the savings without thinking about it each month.

The account has no age restrictions on deposits — you can add money at any time. Some banks allow you to set spending limits or require your approval before the child can withdraw money once they reach a certain age, though this varies by institution. Check the bank's rules about what happens when your child turns 18 or 21; some accounts convert automatically to a standard account in the child's name, while others require you to close the custodial account and open a new one.

Tax implications and financial aid impact

The money in the account belongs to your child for tax purposes. If the account earns more than $1,300 in interest in a single year (this threshold changes annually), your child may owe federal income tax on the earnings. You will receive a 1099-INT form from the bank showing the interest earned, and you will report it on your child's tax return or your own, depending on your child's age and total income.

Custodial accounts also affect financial aid calculations for college. The Free process for Federal Student Aid (FAFSA) counts money in a student's name as an asset, which can reduce the amount of need-based aid they receive. Money in a parent's name is treated differently and has less impact on aid may be able to access. If you are saving for college, discuss this with a financial advisor before opening a large custodial account.

When the child takes control of the account

At the age of majority in your state — usually 18, but sometimes 21 — the custodial account either converts to a standard account in the child's name or the funds transfer to a new account they control. The exact process depends on the bank. Some banks notify you in advance and ask you to confirm the transition; others do it automatically.

Once the child has control, they can withdraw money, close the account, or move it to another bank. You will no longer have access to the account or the ability to make decisions about it. If you want to continue saving for your child after they reach adulthood, you would need to gift them money, which they would then manage themselves.

Frequently Asked Questions

Can a teenager open their own high-yield savings account?

Most banks require the account holder to be at least 18 years old to open an account independently. Teenagers under 18 need a parent or guardian to open a custodial account. Some banks allow teenagers 13 and older to open accounts with parental permission, but these are usually standard savings accounts, not high-yield accounts.

What happens to the money if my child does not want it when they turn 18?

Once your child reaches the age of majority, the money is theirs to keep, spend, or move. You cannot force them to keep it in the account or use it for any particular purpose. If you want to may support the money is used for education or another goal, discuss your intentions with your child before they gain control.

Can I open multiple custodial high-yield accounts for the same child?

Yes, you can open accounts at different banks if you want to diversify or take advantage of different rates. However, each account will generate its own interest earnings and tax forms. Keep track of all accounts so you report the total interest correctly on your child's tax return.

Does the child need to be present to open the account?

No, the child does not need to be present. You can open the account entirely online using the child's Social Security number and your own identity documents. The child never needs to visit a bank or sign anything.

What is the difference between a custodial account and a 529 college savings plan?

A custodial high-yield savings account is flexible — you can withdraw money for any reason without penalty. A 529 plan offers tax advantages for education expenses but charges a penalty if you withdraw money for non-education purposes. Choose a custodial account if you want flexibility; choose a 529 if you are certain the money will be used for college.