Custodial accounts for minors, set up under the Uniform Gifts to Minors Act or the Uniform Transfers to Minors Act, let an adult manage cash and investments that legally belong to a child until the child reaches an age set by state law, usually 18 to 21. Every dollar you put in is an irrevocable gift to the child. You keep control of the investments as custodian, but you cannot take the money back, change the beneficiary, or attach conditions to how it’s eventually spent.
Who Owns the Money and Who Controls It
A custodial account splits ownership from control. The child owns the assets from the moment they hit the account. The custodian, an adult named when the account is opened, makes the investment decisions and approves any withdrawals until the child reaches the termination age set by state law.
The custodian owes a fiduciary duty to the child. That means every decision has to be made solely in the child’s interest. Using the funds for personal benefit or making reckless investments exposes the custodian to legal liability once the child is old enough to sue.
The irrevocable piece is what catches people off guard. Once you deposit money or transfer securities into the account, it’s the child’s, permanently. You can’t reclaim it if your finances change, and you can’t move it to a different child if the original beneficiary turns out not to need it. This is different from a 529 plan, where the account owner keeps control and can switch beneficiaries within the family. Custodial account transfers are one-way, and courts have consistently upheld that.
UGMA vs. UTMA
The difference between the two account types is what you can put inside them.
UGMA accounts hold financial assets only: cash, publicly traded stocks, bonds, mutual funds, and insurance policies. If you’re transferring a standard investment portfolio, a UGMA works fine.
UTMA accounts hold everything a UGMA can, plus real estate, fine art, patents, royalties, partnership interests, and other tangible or intangible property. That flexibility matters if you’re transferring a rental property, an interest in a family business, or intellectual property rights.
Nearly every state has adopted the UTMA, so it’s the default in most of the country. A small number of states still operate exclusively under the UGMA, which means residents there can’t use a custodial account for anything beyond financial assets. In those states, transferring real estate or similar property to a minor requires a formal trust instead.
When the Child Gains Full Access
Termination age varies by state. UGMA’s original default is 18. UTMA states generally default to 21, and many let the custodian pick a later termination age, up to 25 in most states that offer the option, when the account is first established. The age is locked in at account creation and typically can’t be changed later.
When the child reaches that age, they get unrestricted access. No conditions, no spending requirements, no oversight. The former minor can use the funds for tuition, a down payment, or anything else they want. The custodian has no authority to delay the transfer or attach strings to how the money is used. If handing an 18- or 21-year-old a large sum with no restrictions concerns you, a formal trust with spending provisions is the alternative.
Name a successor custodian when you open the account. If the original custodian dies or becomes incapacitated before the child reaches the termination age, the successor steps in without court involvement. Skip that step and a court may need to appoint someone, which means delay and legal fees.
Kiddie Tax Rules for 2026
The IRS taxes investment income inside a custodial account under the kiddie tax, which for 2026 works in three tiers:
- The first $1,350 of unearned income is covered by the child’s standard deduction and isn’t taxed.
- The next $1,350 is taxed at the child’s own rate, usually 10%.
- Anything above $2,700 is taxed at the parent’s marginal rate.
The kiddie tax reaches children under 18, 18-year-olds who don’t earn more than half their own support, and full-time students ages 19 through 23 who don’t earn more than half their own support.1Internal Revenue Service. Topic No. 553, Tax on a Child’s Investment and Other Unearned Income (Kiddie Tax) So the tax can follow custodial earnings well into the college years.
When unearned income exceeds $2,700, the child files their own return with Form 8615 attached.2Internal Revenue Service. Instructions for Form 8615 If the child’s only income is interest and dividends totaling less than $13,500 for the year, the parent can instead elect to report it on their own return using Form 8814.3Internal Revenue Service. Instructions for Form 8814 The election simplifies filing but can produce a slightly higher total tax bill, so it’s worth running both ways.
The $1,350 tier figures come from the IRS’s 2026 inflation adjustments.4Internal Revenue Service. Rev. Proc. 2025-32 Every dividend, capital gain distribution, and interest payment inside the account counts as the child’s unearned income, even if the custodian reinvests all of it and the child never touches a cent.
Contribution Rules and Gift Tax
There’s no statutory cap on contributions to a custodial account. You can deposit any amount into a UGMA or UTMA. The constraint is on gift tax reporting.
For 2026, each donor can give up to $19,000 per recipient per year without any gift tax filing.5Internal Revenue Service. What’s New — Estate and Gift Tax Married couples can effectively give $38,000 per child by splitting the gift. Contributions above $19,000 to a single child in a calendar year (or $38,000 for a couple electing to split) require filing Form 709 by April 15 of the following year.6Internal Revenue Service. Gifts and Inheritances Filing doesn’t necessarily mean owing tax. The excess starts counting against your lifetime gift and estate tax exemption, which is over $13 million for 2026.
The annual exclusion works per donor, per recipient. Grandparents, aunts, uncles, and family friends can each contribute up to $19,000 to the same child’s account without any of them triggering Form 709.7Office of the Law Revision Counsel. 26 USC 2503 – Taxable Gifts Each contributor tracks their own gifts.
What Custodial Funds Can Be Spent On
While the account is active, the custodian can withdraw funds, but only for expenses that directly benefit the child. This is where fiduciary duty has real teeth. Courts have held that custodial funds can’t cover expenses that are actually the parent’s legal obligation. Paying for basic food, clothing, and shelter that a parent already has to provide doesn’t count as a benefit to the child; it relieves the parent’s burden.
In practice, enrichment activities, private school tuition above what a parent would otherwise provide, summer programs, a first car, or a computer for the child’s use all generally qualify. Paying the grocery bill or the family mortgage does not, even though the child lives in the house and eats the food. Courts have rejected the idea that household expenses trickle down to benefit the child. The benefit has to be direct.
There’s a narrow exception when a parent genuinely lacks the resources to meet a child’s needs. Custodial funds can fill that gap. But a custodian who routinely uses the account for ordinary household expenses risks a breach-of-fiduciary-duty claim from the child once they reach adulthood.
Effect on College Financial Aid
Custodial accounts hit the FAFSA harder than most families expect. Because the account legally belongs to the child, it’s reported as a student asset. The FAFSA formula assesses student assets at 20%, so every $10,000 in a custodial account raises the expected family contribution by $2,000. Parent-owned assets like 529 plans are assessed at a maximum of 5.64%, so the same $10,000 would reduce aid eligibility by only $564 at most.
That gap makes custodial accounts one of the least aid-friendly ways to save for college. Some families address it by liquidating the custodial account and moving the proceeds into a custodial 529. This reclassifies the assets from student-owned to parent-owned for FAFSA purposes. Because it’s a custodial 529, the child stays the beneficiary and the funds can’t be redirected to a sibling, preserving the irrevocable nature of the original gift.
Liquidating triggers a taxable event. Unrealized capital gains become taxable in the year of the sale, and the kiddie tax applies. Selling a large portfolio in one year could push significant income into the parent’s bracket. Timing matters too. The FAFSA looks at income from two years prior, so capital gains realized during the child’s sophomore year of high school or later can increase the expected family contribution on the income side as well.
Estate Tax Trap When the Donor Is Also the Custodian
If you fund the account and also serve as custodian, the entire balance can be pulled back into your taxable estate if you die before the child reaches the termination age. Under federal tax law, a custodian’s power to manage, distribute, and control the assets is treated as a retained power to alter or revoke the transfer.8Office of the Law Revision Counsel. 26 USC 2038 – Revocable Transfers
For most families this doesn’t matter in practice, because the federal estate tax exemption exceeds $13 million in 2026. For high-net-worth families making substantial transfers, the fix is straightforward: name someone other than the donor as custodian. A spouse, grandparent, or trusted family member can serve without triggering estate inclusion. If you’ve already set up an account where you’re both the donor and custodian, you can typically resign and appoint a successor, though the IRS has argued in some cases that giving up the power within three years of death still triggers inclusion.
How to Open a Custodial Account
Most brokerages and banks offer custodial accounts through an online application that takes about 15 minutes. You’ll need:
- The minor’s full legal name and Social Security number. The account is registered under the child’s SSN, so double-check it. An incorrect number creates tax reporting problems that are tedious to fix.
- Your identification as custodian: Social Security number, government photo ID, and a verifiable home address.
- The state governing the account, which determines whether UGMA or UTMA applies and sets the termination age. This locks in when the child gains full access, so pick deliberately.
- A successor custodian’s name and contact information. Not every institution requires this at opening, but filling it in upfront avoids complications later.
The institution verifies the information and the account is typically active within a few business days. Fund it by electronic transfer, check, or by transferring existing securities. From there, the custodian handles investment selection, rebalancing, and withdrawals, all for the child’s benefit, until the termination date arrives and the account passes fully into the former minor’s hands.