When your child reaches the age of termination set by your state, commonly 18 or 21 and as high as 25 in some states, a Vanguard UGMA or UTMA custodial account legally belongs to them and must be retitled into their own name. The custodian's control ends, and the gift can never revert to you.
Key takeaways
- The main event in any custodial account is the handoff at the age of termination. The assets already belong to the child, and Vanguard retitles the account into their name once they reach that age.
- The age of termination varies by state. It is often 18 for UGMA accounts and 21 for UTMA accounts, and several states let the donor extend it to 25 or beyond.
- Money placed in a custodial account is an irrevocable gift to the minor. You cannot take it back or move it to another child.
- Moving an existing custodial account into Vanguard from another firm uses the ACATS system, which keeps the same custodian and beneficiary and transfers investments in kind without selling them.
- The retitling at majority is not a taxable event, but the account's earnings are subject to the kiddie tax every year it is open.
The transfer that matters most: reaching the age of termination
A custodial account under the Uniform Gifts to Minors Act (UGMA) or Uniform Transfers to Minors Act (UTMA) is not really yours. From the moment you fund it, the assets belong to the child. You act as custodian, managing the investments on their behalf, until they reach the age their state sets for the account to end.
That age is called the age of termination. When the child reaches it, the custodian is legally required to hand over the account. At Vanguard, the UGMA or UTMA converts into a standard individual brokerage account owned entirely by the now-adult child. The holdings stay invested as they are, and the original cost basis carries over, so the retitling itself does not trigger a sale or a tax bill. From that point on, the young adult controls the account and is responsible for its taxes.
There is no discretion here. You cannot delay the handoff because you think the child is not ready, and you cannot redirect the money to a sibling or back to yourself. This is the single most important thing to understand before you open one of these accounts.
Age of termination by state
The age of termination is set by the state whose UGMA or UTMA law governs the account, and it is not always the same as that state's age of majority. Many states also let the person making the gift choose a later age when the account is opened. These are examples, not a substitute for checking your own state's statute or asking Vanguard which age applies to your account.
| State | Typical age of termination | Notes |
|---|---|---|
| California | 18 | Can be extended to 21 for a lifetime gift, or 25 for a transfer by will or trust |
| New York | 21 (UTMA) | UGMA accounts generally end at 18 |
| Florida | 21 | Custodianship can be extended to 25 |
| Virginia | 18 or 21 | Since July 1, 2019, can be extended to 25 |
| Alaska | 21 to 25 | Donor may specify any age in that range |
| Wyoming | Up to 30 | Custodian must notify the minor within six months of them turning 21 |
Most states repealed their older UGMA statutes when they adopted UTMA, so accounts opened long ago may be grandfathered under the original UGMA age. If you are unsure which age governs your account, confirm it with Vanguard before you plan around a specific date.
Moving a custodial account to or from Vanguard
Retitling at majority is one kind of transfer. Changing which firm holds the account is another, and the two should not be confused. If you want to bring a UGMA or UTMA held at another brokerage over to Vanguard, or send a Vanguard custodial account elsewhere, you are moving the account between institutions while the custodian and the minor beneficiary stay the same.
The cleanest path is an in-kind transfer through the Automated Customer Account Transfer Service (ACATS). Vanguard accepts custodial accounts through its account transfer process, and an in-kind ACATS move keeps your investments intact rather than selling them, which avoids creating a taxable event. Not every holding is eligible, so some proprietary funds may need to be liquidated first. Always confirm with both firms what can move in kind.
| Scenario | What happens | Tax and cost notes |
|---|---|---|
| Child reaches age of termination | Vanguard retitles the UGMA/UTMA into a standard brokerage account in the child's name | Not a taxable event; cost basis carries over; child now owes the taxes |
| Custodial account moved into Vanguard via ACATS | Same custodian and same minor beneficiary, investments transferred in kind | Not a taxable event when done in kind; ineligible holdings may need to be sold first |
| Custodial account moved out of Vanguard | ACATS transfer to the receiving firm | Vanguard may charge a $100 processing fee for account closures or transfers for clients holding under $5 million |
| Reverting the account to the parent | Not permitted | The gift is irrevocable; the money stays the child's |
Redeeming a custodial account at one firm and contributing the cash to a new Vanguard UGMA, UTMA, or 529 is also possible, but selling to raise that cash can be a taxable event. An in-kind ACATS transfer usually avoids that problem.
The two caveats that trip people up
The gift is irrevocable. This bears repeating because it is the most common misunderstanding. Once you fund a custodial account, the money is the child's. You manage it, but you cannot claw it back, move it to another beneficiary, or use it for your own expenses. If keeping control past age 21 matters to you, a 529 plan or a trust gives you that control in ways a UGMA or UTMA never will.
The kiddie tax applies every year. Custodial accounts are not tax shelters. A child's investment earnings are taxed under the kiddie tax rules. The kiddie tax threshold is $2,700 for 2026: the first $1,350 of a child's unearned income is tax-free and the next $1,350 is taxed at the child's rate. Unearned income above $2,700 is taxed at the parent's marginal rate, which erases much of the tax advantage families expect from these accounts. Contributions are gifts, so they also count against the annual gift tax exclusion, which is $19,000 per recipient for 2026, unchanged from 2025.
One planning note for higher earners: because these funds are legally the child's, custodial accounts weigh heavily against need-based financial aid, counted as the student's asset. That is a meaningful trade-off if college aid is part of your plan.
Where a Vanguard custodial account fits
For families who want to gift assets to a child, accept that the money is truly theirs, and value Vanguard's low-cost funds, a custodial account is a straightforward tool. The two things to plan around are fixed: the account will hand over to the child at your state's age of termination, and the earnings face the kiddie tax along the way.
If your goal is instead to keep control or to move money between your own accounts, the mechanics are different. For account-to-account moves between brokers, see how a Vanguard-to-Fidelity transfer works, and if you are funding a child's retirement rather than a taxable account, our guide on proving a child's income for a Roth IRA covers the documentation you will need. For the full picture on custodial accounts at Vanguard, start with our Vanguard hub.
Frequently asked questions
What happens to a Vanguard custodial account when the child grows up?
When the child reaches the age of termination set by their state, Vanguard retitles the UGMA or UTMA into a standard individual brokerage account owned entirely by the now-adult child. The holdings stay invested and the original cost basis carries over, so the retitling does not trigger a sale or tax bill. From that point the young adult controls the account.
Can a parent take back money from a Vanguard custodial account?
No, money placed in a custodial account is an irrevocable gift to the minor. From the moment you fund it, the assets belong to the child. You cannot claw it back, move it to another child or beneficiary, or use it for your own expenses. This is the most common misunderstanding about these accounts.
At what age does a custodial account end?
The age of termination varies by state and is often 18 for UGMA accounts and 21 for UTMA accounts. Several states let the donor extend it, such as California to 21 or 25, Florida and Virginia to 25, and Wyoming up to 30. Confirm which age governs your account with Vanguard before planning around a specific date.
How do I move a custodial account into Vanguard without selling investments?
Use an in-kind transfer through the Automated Customer Account Transfer Service (ACATS), which keeps your investments intact rather than selling them and avoids creating a taxable event. The custodian and minor beneficiary stay the same. Not every holding is eligible, so some proprietary funds may need to be liquidated first; confirm with both firms what can move in kind.
Do custodial accounts avoid taxes on investment earnings?
No, custodial accounts are not tax shelters. A child's investment earnings face the kiddie tax, with a $2,700 threshold for 2026. The first $1,350 is tax-free, the next $1,350 is taxed at the child's rate, and unearned income above $2,700 is taxed at the parent's marginal rate, erasing much of the tax advantage families expect.