What a grandparent can and cannot do alone

A grandparent cannot open a checking account in a grandchild's name without the child's parent or legal guardian present and signing off. Banks require a parent or guardian to authorize any account for a minor, and most require them to be physically present at the bank or to sign documents electronically. A grandparent can be listed as a joint owner or authorized user after the account is opened, but the parent must initiate the account first.

If you want to set up an account that the grandchild can use, you have two realistic paths: open a joint account with the parent present, or open an account in your own name and give the grandchild access to it. The second option sidesteps the paperwork but creates tax and liability questions you should understand before moving forward.

Key Takeaways

  • A parent or legal guardian must be present or sign documents to open any account for a minor; a grandparent alone cannot do this.
  • You can open a joint account with the grandchild if the parent attends the bank appointment or signs the paperwork remotely.
  • Some banks allow a grandparent to add a minor grandchild as an authorized user on the grandparent's own account after it is opened.
  • Opening an account in your name only and letting the grandchild use it avoids paperwork but may create tax complications if the account earns interest.
  • The grandchild's Social Security number is required for any account in their name, but not if the account is only in yours.

Opening a joint account with the parent present

This is the straightforward route. You and the parent go to the bank together, bring the grandchild's Social Security number, and open an account with both the parent and grandchild listed as owners. The parent signs the signature card and any required documents. You can be listed as a third owner if the bank allows it, though most banks cap joint accounts at two owners.

The parent remains the account owner with full control, even if you make deposits or manage it day-to-day. The grandchild can use the debit card and make withdrawals once they are old enough to understand how, but the parent can close the account or change the rules at any time. This setup works well if you want to help fund the account but the parent wants to maintain oversight.

Bring a photo ID, proof of address (a utility bill or bank statement), and the grandchild's birth certificate or Social Security card. Some banks ask for proof of guardianship if the parent is not the biological parent. Call ahead to confirm what your bank requires.

Adding the grandchild as an authorized user on your account

Many banks allow you to add a minor as an authorized user on your existing checking account without the parent's signature. The grandchild gets a debit card and can make purchases or withdrawals, but you remain the account owner and are responsible for all activity. The parent does not have to be involved.

This is faster than opening a new account, but it blurs the line between your money and the grandchild's. Any interest the account earns is taxed to you, not the grandchild, even if you think of it as their money. If you die, the account becomes part of your estate and may be frozen during probate, leaving the grandchild without access. Check with your bank about their specific rules for authorized users under 18.

Opening an account in your name only

You can open a checking account in your own name and tell the grandchild they can use it. This requires no paperwork involving the parent or the grandchild's Social Security number. You control the account completely, and the grandchild can deposit money or spend from it if you give them a debit card.

The downside is tax and legal complexity. If the account earns interest, you owe tax on it, even if you intended the money for the grandchild. If you pass away, the account is part of your estate and may be frozen, leaving the grandchild unable to access money you meant for them. Some grandparents use this method as a temporary solution while the grandchild is very young, then transfer the account to the child's name once they are old enough to open their own account.

If you want the grandchild to inherit the account without it going through probate, you can name them as a "payable on death" (POD) beneficiary when you open the account. This means the money passes directly to them when you die, outside of your will. Ask your bank whether they offer POD accounts.

What documents you need

For a joint account with the parent and grandchild, bring:

  • Your photo ID and proof of address
  • The parent's photo ID and proof of address
  • The grandchild's birth certificate or Social Security card
  • Proof of guardianship if the parent is not the biological parent (adoption papers or court order)

For adding a grandchild as an authorized user on your account, you typically need only your ID and the grandchild's date of birth. Some banks ask for the grandchild's Social Security number; others do not. Call your bank first.

For an account in your name only, you need your photo ID and proof of address. No documents involving the grandchild are required.

Age limits and account restrictions

Most banks allow minors to be joint owners or authorized users starting at age 13, though some allow it as early as age 10. A few banks require the minor to be at least 16. There is no federal rule; each bank sets its own age minimum.

Some banks restrict what a minor can do on the account—for example, a grandchild might be able to make deposits and withdrawals but not close the account or change the account holder. Others give full access once the debit card is issued. Ask your bank what restrictions apply to minors on the account type you are opening.

Once the grandchild turns 18, they become a full account owner with the same rights as any adult. If the account was joint with the parent, both the parent and the grandchild can close it or withdraw all the money without the other's permission.

Tax considerations for accounts you fund

If you deposit money into an account for the grandchild, you may owe federal gift tax if the amount exceeds the annual gift tax exclusion. In 2024, you can give up to $18,000 per person per year without filing a gift tax return. If you give more than that in a single year, you must file Form 709 with the IRS, though you may not owe tax if you have not exceeded your lifetime exemption.

The grandchild does not owe income tax on money you give them, but they do owe tax on any interest the account earns. If the account is in the grandchild's name and earns more than $1,300 in interest in a year (the 2024 threshold), the grandchild must file a tax return. If the account is in your name only, you owe the tax on the interest, not the grandchild.

Talk to a tax professional if you plan to deposit large amounts or if the account will earn significant interest. The rules are different depending on whether the account is in the grandchild's name, joint, or in your name only.

Frequently Asked Questions

Can I open an account for my grandchild if the parent refuses?

No, not in the grandchild's name. You can open an account in your own name and let the grandchild use it, but you cannot create an account that legally belongs to the grandchild without the parent's consent and signature. If there is a custody dispute or guardianship question, a court order may be required.

What if the parent lives far away and cannot come to the bank?

Many banks allow the parent to sign documents electronically or by mail. Call your bank and ask whether they offer remote account opening for minors. Some banks require all parties to be present; others do not. If your bank does not offer remote signing, you may need to use a bank that does, or open the account in your name only.

Can I remove the parent from the account later?

No. Once the parent is listed as a joint owner, they have equal rights to the account. You cannot remove them without their permission. If you want the grandchild to have an account the parent cannot access, you will need to open a separate account in your name or wait until the grandchild turns 18 and can open their own account.

What happens to the account if I die?

If the account is joint with the parent and grandchild, it passes to the surviving owners outside of probate. If the account is in your name only, it becomes part of your estate. Unless you named the grandchild as a POD beneficiary, the money may be frozen until your will is probated. Name a beneficiary when you open the account if you want to avoid this.

Can my grandchild have their own debit card?

Yes, most banks issue debit cards to minors on joint accounts or as authorized users, though some require the minor to be at least 13. The card works like any other debit card, but the parent or account owner can set spending limits or freeze it if needed. Ask your bank what age they require and what controls are available.