Yes, a grandparent can open a savings account for a grandchild, but the account structure depends on the child's age

A grandparent can open a savings account in a grandchild's name at most banks and credit unions. The process and account type differ based on whether the child is a minor or an adult. For children under 18, you will open a custodial account (also called a minor account or UGMA/UTMA account, depending on your state). For an adult grandchild, you can open a joint account or straightforward give them money to open their own account.

The key difference is legal control: with a custodial account, you manage the money until the grandchild reaches the age of majority (usually 18 or 21, depending on your state and the account type). The account belongs to the child, but you make the deposits and withdrawals. Once they turn 18 or 21, the account transfers to their full control, and you lose access.

If you want to set aside money for a grandchild without giving up control permanently, a custodial account is the standard choice. If you want a joint account where both of you can access the money at any time, that is also possible but less common for this purpose.

Key Takeaways

  • A custodial account is the most common way a grandparent opens a savings account for a minor grandchild, and you control it until they reach age 18 or 21.
  • You will need the grandchild's Social Security number, birth certificate, and proof of your identity and address to open the account.
  • Different banks and states have different rules about when the account transfers to the child's control, so check with your bank before opening.
  • Once the grandchild reaches the age of majority, the account becomes theirs to control, and you cannot withdraw money without their permission.
  • A custodial account is a gift to the grandchild and may affect their financial aid may be able to access for college.

What documents you need to open a custodial account

To open a custodial savings account, bring your government-issued ID (driver's license or passport) and proof of your current address (a utility bill, lease, or recent bank statement). You will also need the grandchild's Social Security number and birth certificate. Some banks ask for both parents' names and contact information as well, even if only one parent is present.

If you do not have the grandchild's Social Security number, you can request one from the Social Security Administration before opening the account. Bring the child's birth certificate and your ID to your local Social Security office, or request one by mail. This usually takes one to two weeks.

Different banks have slightly different document requirements, so call ahead or check the bank's website. Some banks let you open a custodial account online if you already have an account with them; others require an in-person visit.

How custodial accounts work and when control transfers

When you open a custodial account, the bank will ask you to choose between two types: a UGMA (Uniform Gifts to Minors Act) account or a UTMA (Uniform Transfers to Minors Act) account. The difference is what you can put in the account. UGMA accounts hold cash and securities (stocks and bonds). UTMA accounts can also hold real estate, artwork, and other property. For a straightforward savings account, either type works, but UTMA is slightly more flexible.

You deposit money into the account and manage it while the grandchild is a minor. You can withdraw money to pay for the child's expenses — school, medical bills, sports, music lessons — or let it grow. The money is legally the grandchild's, not yours, so it does not count as your asset if you ever need to explore for government programs.

When the grandchild reaches the age of majority (18 in most states, 21 in a few), the account automatically transfers to their control. You lose access. They can withdraw all the money, close the account, or leave it open. You cannot stop them. This is a permanent transfer, not a choice you make later.

Tax implications of a custodial account

Money in a custodial account earns interest or investment returns, and that income is taxed. The first $1,300 of unearned income (interest, dividends) per year is usually not taxed for the grandchild (this amount changes yearly, so check the IRS website for the current year). Income above that is taxed at the child's rate, which is typically lower than yours. Above $2,600, some of the income may be taxed at your rate instead.

You do not report the account on your taxes — the grandchild (or their parent, if they are very young) reports it. The bank will send a 1099 form each year if the account earns more than $10 in interest. If you are unsure how to report it, ask a tax professional or contact the IRS directly.

The account may also affect the grandchild's financial aid if they go to college. Schools count student-owned assets more heavily than parent-owned assets when calculating aid, so a large custodial account could reduce the amount of aid they receive. This is worth considering if college is likely.

Alternatives to a custodial account

If you want more control over the money or do not want it to transfer to the grandchild at age 18, a custodial account is not your only option. You can open a savings account in your own name and straightforward tell your family that the money is for the grandchild. You keep full control, and the money goes to your estate when you die. Your will can direct it to the grandchild, or you can name them as a beneficiary on the account.

You can also open a joint account with the grandchild (if they are old enough to sign documents) or with their parent. A joint account means both people can deposit and withdraw money at any time. This is less common for saving money for a child, because the child can withdraw everything without your permission.

A third option is a 529 college savings plan, which is specifically designed for education expenses. It has tax advantages and more control over how the money is used. If the grandchild does not go to college, you can transfer the money to another family member's 529 plan or withdraw it (though you will pay taxes and a penalty on the earnings).

How to open the account at your bank

Call your bank or credit union and ask if they offer custodial savings accounts. Not all banks do, though most large ones do. Ask whether they offer UGMA or UTMA accounts, what the minimum deposit is, what interest rate the account earns, and whether there are monthly fees.

If you already have an account at the bank, you may be able to open a custodial account online or by phone. If not, you will need to visit a branch in person. Bring all the documents listed above. The process usually takes 15 to 30 minutes. The bank will give you a debit card (if you request one) and online access so you can manage the account.

Once the account is open, you can deposit money by check, transfer, or cash. Set up automatic transfers from your own account if you want to deposit a fixed amount each month. The money will earn interest at whatever rate the bank offers for that account type.

What happens when the grandchild turns 18 or 21

On the date the grandchild reaches the age of majority, the account legally becomes theirs. The bank will send you a notice, usually a few weeks before. You will no longer be able to withdraw money or make decisions about the account. The grandchild can access it, withdraw it, or close it.

Some banks require the grandchild to visit a branch or sign new paperwork to take control. Others transfer it automatically. Call your bank a few months before the transfer date to find out what will happen and what the grandchild needs to do.

If you want to give the grandchild guidance on how to use the money, that is the time to have that conversation. But you cannot force them to keep the account open or use the money in any particular way.

Frequently Asked Questions

Can I open a custodial account if I am not the parent?

Yes. Any adult can open a custodial account for a minor, including grandparents, aunts, uncles, or family friends. You do not need the parent's permission, though it is a good idea to tell them what you are doing. The account is still legally the child's, not yours.

What if the grandchild's parents do not want me to open an account?

You can still open one — the account is a gift to the child, and parents cannot prevent it. However, if you want to avoid conflict, talk to the parents first. If they object, consider whether the relationship is worth the tension, or whether a different approach (like a 529 plan or money in your own name) would work better.

Can I withdraw money from the account to pay for the grandchild's expenses?

Yes. You can withdraw money to pay for reasonable expenses related to the child's care, education, or welfare. This includes school tuition, medical bills, sports, music lessons, and similar costs. You cannot withdraw money for your own use or for unrelated expenses.

What if I die before the grandchild turns 18?

The account belongs to the grandchild, not to you, so it does not go through your estate. It stays in the grandchild's name and continues to grow. If the grandchild is very young, the court may appoint a guardian to manage it, or a parent may take over as custodian. Check with your bank about their specific rules.

Does a custodial account affect the grandchild's Social Security benefits?

If the grandchild receives SSI (Supplemental Security Income) or other means-tested benefits, a custodial account may reduce or eliminate those benefits. The account counts as a resource. If this applies to your grandchild, talk to a benefits counselor before opening the account.