Yes, grandparents can open savings accounts for grandchildren, but the account structure depends on the child's age and your relationship to the bank

Grandparents can open a savings account in a grandchild's name at most banks and credit unions. The account belongs to the child, not to you, even though you set it up and manage it while they are young. The bank will ask for the child's Social Security number, proof of the child's identity (usually a birth certificate), and proof of your identity (a driver's license or passport). You will be listed as the custodian or authorized representative, which means you can deposit money and handle day-to-day transactions, but the money is legally the grandchild's.

If the grandchild is under 18, you cannot open the account without a parent or legal guardian's permission. Most banks require at least one parent to be present or to sign a consent form. Some banks will let you open the account with just the parent's written approval, while others insist on in-person signatures. Call the bank ahead of time to ask what they need — this varies by institution.

Key Takeaways

  • You will need the grandchild's Social Security number, birth certificate, and at least one parent's permission to open an account in the child's name.
  • A custodial savings account belongs to the grandchild, not to you, even though you manage it while they are a minor.
  • Once the grandchild turns 18, they gain full control of the account and you lose access unless they add you as an authorized user.
  • Money you deposit into a custodial account may affect the grandchild's financial aid may be able to access for college, depending on how much is saved.
  • If you want the money to go to the grandchild only if you pass away, you need a separate legal document like a will or trust, not just a savings account.

What documents you need to bring to the bank

Bring your own ID (driver's license, passport, or state ID card) and the grandchild's birth certificate. You will also need the child's Social Security number. If you do not have it, ask the parent — they received it when the child was born, or they can request a replacement from the Social Security Administration.

The bank will also ask for proof that a parent consents. Some banks accept a signed letter from a parent; others require the parent to come in person. A few banks have a specific consent form they use. Before you go to the bank, call and ask exactly what the parent needs to provide and whether they must be present.

The difference between a custodial account and a joint account

A custodial account is opened in the grandchild's name with you listed as the custodian. The money belongs to the child from day one. You manage it while they are young, but when they turn 18 (or 21 in some states), the account automatically transfers to their full control. At that point, you can no longer access it or make decisions about it unless the grandchild adds you as an authorized user.

A joint account is opened in both your name and the grandchild's name. Both of you own the money equally. This sounds simpler, but it creates problems: if you face a lawsuit or file for bankruptcy, creditors can go after the money in the joint account. If you die, the money passes to the grandchild automatically, which may not be what you want if you have other heirs. Most banks recommend custodial accounts for grandparents for these reasons.

Some grandparents use a joint account by mistake because they think it is easier. It is not. Stick with a custodial account unless the bank specifically tells you that is not an option.

What happens when the grandchild turns 18

On the grandchild's 18th birthday (or 21st in some states), the custodial account becomes their account. You lose access. You cannot see the balance, make deposits, or withdraw money without their permission. The bank will send them paperwork explaining that they now own the account outright.

If you want to keep contributing money after they turn 18, you can ask them to add you as an authorized user, but they do not have to say yes. Some grandchildren do; others prefer to manage the account alone. Plan for this transition ahead of time by talking to the grandchild about the account as they get older, so there are no surprises.

How savings in a custodial account affect college financial aid

Money in a custodial account in the grandchild's name counts as the child's asset when they explore for college financial aid. Schools use the Free process for Federal Student Aid (FAFSA) to calculate how much aid a student receives. Assets in the student's name reduce their aid may be able to access more than assets in a parent's name do.

This does not mean you should not save. It means you should know the trade-off: a $10,000 custodial account might reduce financial aid by $1,200 to $1,500 per year, depending on the school and the student's other circumstances. If you are saving for college, talk to a financial advisor or the college's financial aid office about whether a custodial account is the best choice for your situation. Some families use a custodial account anyway because the tax benefits outweigh the aid reduction; others use a different structure.

If you want the money to pass to the grandchild after you die

A custodial savings account does not automatically pass to the grandchild if you die. The account belongs to the grandchild already, so your will has no say in it. The money stays in the account in the grandchild's name, and they keep it when they turn 18.

If you want to leave money to the grandchild in your will or trust, you can do that separately. You can name the grandchild as a beneficiary in your will, or you can set up a trust that holds money for them. A custodial savings account is not a substitute for these documents — it is just a place to save money while the grandchild is young. Talk to an estate planning attorney if you want to make sure your money goes where you intend after you pass away.

Where to open a custodial account

Most banks and credit unions offer custodial savings accounts. Call ahead or visit the bank's website to confirm they have them, because a few smaller institutions do not. Ask about the minimum deposit (some require $25, others require $100 or more), the interest rate the account pays, and any monthly fees.

Online banks often have higher interest rates than brick-and-mortar banks, but they do not have branches where you can deposit cash. If you plan to make regular cash deposits, a local bank or credit union may be more convenient. If you are comfortable depositing by mail or transfer, an online bank might save you money in the long run through higher interest.

Frequently Asked Questions

Do I need the grandchild's parent to be at the bank with me?

It depends on the bank. Some require a parent to be present in person; others accept a signed consent letter. Call the bank before you go and ask what they need. If a parent must be present, coordinate a time that works for everyone.

What if the grandchild's parents are divorced or one parent objects?

Most banks require consent from at least one parent with legal custody. If both parents have joint custody, some banks want both signatures; others accept one. If there is a custody order that names only one parent, bring a copy. If you are unsure, ask the bank and the parent what documentation they need.

Can I withdraw money from the account if I need it?

Technically yes, because you are the custodian, but the money belongs to the grandchild. Withdrawing it for your own use is legally taking the child's money. If the grandchild or their parent finds out, they can take legal action. Open the account only if you intend to leave the money for the grandchild.

Will the grandchild know about the account?

Not automatically. The bank sends statements to the address on file, which is usually yours. You can choose to tell the grandchild about it or keep it private until they are older. Many grandparents tell the child when they turn 13 or 14, so they understand the gift and start thinking about money.

What if I want to change who the money goes to after I die?

You cannot change that through the savings account itself — the money is already the grandchild's. If you want to leave money to a different grandchild or person, you need to set up a separate account or use a will or trust. Talk to an estate planning attorney about your options.