You need to be 18 to open a high yield savings account in your own name

Most banks and online financial institutions require you to be 18 years old to open any account by yourself, including a high yield savings account. This is a legal requirement tied to contract law — you have to be an adult to sign the account agreement that binds you to the bank's terms.

If you are under 18, you have two paths: open a custodial account with a parent or guardian, or wait until you turn 18. The choice depends on whether you need access to higher interest rates now, or whether a standard savings account will work for the next few months or years.

Key Takeaways

  • You must be 18 to open a high yield savings account in your own name at any bank or online institution.
  • If you are under 18, a parent or guardian can open a custodial high yield savings account where you are the beneficiary and they are the account owner.
  • Some banks allow you to become the sole owner at 18 without closing the account, while others require you to open a new adult account.
  • High yield savings accounts typically earn 4 to 5 percent annual interest, compared to 0.01 percent or less at traditional banks, so the difference compounds even over a short time.

How custodial high yield savings accounts work

A custodial account is opened by your parent or guardian in their name, but the money inside belongs to you. The adult is the legal account owner and can make deposits and withdrawals, but the account is held for your benefit. When you turn 18, the account typically converts to your name, though the process varies by bank.

Not every bank offers custodial high yield savings accounts. Larger online banks like Marcus by Goldman Sachs, Ally Bank, and American Express Personal Savings do not offer them. Regional banks and credit unions are more likely to have them. You will need to call or visit the bank's website to ask whether they offer custodial high yield accounts and what the minimum deposit is.

The interest rate on a custodial account is usually the same as the rate on a regular high yield account. Your parent or guardian does not need to do anything special — the money earns the same percentage whether the account is custodial or not.

What happens when you turn 18

The transition depends on the bank. Some institutions automatically convert the custodial account to an adult account in your name on your 18th birthday or shortly after. Others require you to visit a branch or call to request the conversion. A few require you to close the custodial account and open a new adult account, which means you lose the account history but keep the money.

Before opening a custodial account, ask the bank what happens at 18. This matters because some banks charge a fee to close an account, and you want to know whether you will keep the same account number and interest rate. If the bank requires you to open a new account, confirm that you can do it online or by mail, since you may not be able to visit a branch in person.

Interest rates and how they compare

High yield savings accounts currently earn between 4 and 5 percent annual percentage yield (APY), depending on the bank and the current interest rate environment. A traditional savings account at a large bank typically earns 0.01 percent or less. Over one year, the difference is significant: $1,000 in a high yield account earning 4.5 percent grows to $1,045, while the same $1,000 in a traditional account earning 0.01 percent grows to $1,000.10.

The gap widens over time. If you are saving for college or a car and have two or three years before you need the money, a high yield account — whether custodial or opened at 18 — will earn you hundreds of dollars more than a traditional account. The interest rate changes with the broader economy, so the exact rate you see today will not be the rate you earn next year, but high yield accounts have consistently outpaced traditional banks for the past several years.

Minimum deposits and account features

Most high yield savings accounts have no minimum deposit or a very low one — often $0 to $25. Some require $500 or $1,000 to open, but these are less common among online banks. Check the specific bank's website or call to confirm the minimum before you ask your parent or guardian to open an account.

High yield accounts are designed for saving, not spending. You cannot get a debit card, and most banks limit you to six withdrawals per month (though this rule is less strictly enforced than it once was). If you need to access your money frequently or make purchases, a high yield account is not the right tool — a regular checking account or a teen checking account is better for that. A high yield account works best when you have money you do not plan to touch for several months.

Comparing banks for custodial accounts

Your options for custodial high yield accounts are narrower than for adult accounts. Start by asking your parent or guardian whether they already bank somewhere — many regional banks and credit unions offer custodial accounts to existing customers. If not, call three or four banks and ask: Do you offer custodial high yield savings accounts? What is the current APY? What is the minimum deposit? What happens when the account holder turns 18?

Write down the answers. The difference between 4.25 percent and 4.75 percent does not sound large, but over three years on $5,000, it adds up to about $75. The conversion process at 18 matters too — if one bank converts automatically and another requires you to open a new account, the automatic conversion is simpler.

Frequently Asked Questions

Can I open a high yield savings account at 17 if I turn 18 soon?

No. Banks verify your age at the moment you open the account, not at the moment you turn 18. You have to be 18 on the day you open it. If you are 17, you will need a custodial account with a parent or guardian.

Does my parent or guardian have access to the money in a custodial account?

Yes. The parent or guardian is the legal account owner, so they can withdraw money at any time. The account is held for your benefit, but legally they have full control. This is why it matters that you trust the adult opening the account.

What if the bank closes or goes out of business?

Deposits up to $250,000 per account holder are protected by the Federal Deposit Insurance Corporation (FDIC). A custodial account is insured separately from your parent's or guardian's personal accounts, so your money is covered even if the bank fails.

Can I move money from a custodial account to a regular checking account?

Yes. Your parent or guardian can transfer money from the custodial savings account to any other account — theirs or yours — at any time. There is no restriction on moving the money once it is in the account.

Do I need a Social Security number to open a custodial account?

Yes. The bank will ask for your Social Security number when opening the account. If you do not have one, you can explore for one through the Social Security Administration before opening the account.