UTMA vs UGMA: The Complete Guide to Custodial Accounts for Kids

Updated 30 March 2026

UTMA (Uniform Transfers to Minors Act) and UGMA (Uniform Gifts to Minors Act) are the two legal frameworks that govern custodial accounts for minors in the United States. Both allow an adult to open and manage a financial account on behalf of a child. The money deposited into these accounts is an irrevocable gift to the child, meaning the donor cannot take the money back once it is contributed. The custodian (usually a parent or grandparent) manages the account until the child reaches the age of majority, at which point the child gains full, unrestricted access to the funds.

The practical difference between UTMA and UGMA is what the account can hold. UGMA accounts are limited to financial assets: cash, stocks, bonds, mutual funds, insurance policies, and certificates of deposit. UTMA accounts can hold all of those plus real property, patents, fine art, and other non-financial assets. For most families, this distinction is academic since the vast majority of custodial accounts hold cash or publicly traded securities. Nearly all states have adopted UTMA, making it the more common framework.

Irrevocable Gift: What That Actually Means

When you contribute money to a UTMA or UGMA account, you are making a legal gift to the child. This gift cannot be undone. You cannot withdraw the money for your own use. You cannot redirect it to a sibling. You cannot close the account and reclaim the funds. The custodian has a fiduciary duty to manage the account solely for the benefit of the named minor.

Permissible uses of custodial account funds include: education expenses beyond what the parent is legally obligated to provide, extracurricular activities, summer camps, a first car, a computer for school, or saving for the child's future. The custodian cannot use custodial funds for basic necessities (food, housing, clothing) that are part of the parent's existing legal obligation to support the child. Misuse of custodial account funds can result in legal liability for the custodian.

This irrevocability is the most important distinction between a custodial account and a joint savings account. With a joint account, the parent can withdraw funds at any time for any reason. With a custodial account, the money belongs to the child from the moment of deposit, and the parent is merely a steward until the child comes of age.

Age of Majority by State

The age at which the child gains full control of the custodial account varies by state. Most states set the age of majority at 18, but several states use 21, and some states allow the custodian to specify an age up to 21 or even 25 at the time the account is opened. Here is a summary of the key variations:

In states that allow the custodian to choose an age between 18 and 21 (or 25), this election is typically made at the time the account is opened and cannot be changed later. If you are opening a custodial account and your state offers the option, choosing age 21 gives the child three additional years of maturity before receiving a potentially large sum of money. Some parents prefer this if they are concerned about an 18-year-old managing a significant balance responsibly.

Tax Implications: The Kiddie Tax

Custodial accounts are subject to the kiddie tax, which applies to a child's unearned income (interest, dividends, capital gains). For 2026, the thresholds are: the first $1,250 of unearned income is tax-free (covered by the dependent's standard deduction), the next $1,250 is taxed at the child's rate (usually 10%), and any unearned income above $2,500 is taxed at the parent's marginal tax rate.

For a custodial savings account earning 3.10% APY, the $1,250 tax-free threshold is not reached until the account balance exceeds approximately $40,000. For a custodial brokerage account with dividends and capital gains, the threshold can be reached at lower balances depending on investment returns. The kiddie tax applies to children under 19, or under 24 if they are full-time students who do not provide more than half their own support.

If the child's unearned income exceeds $1,250, you have two reporting options. You can file a separate tax return for the child using Form 8615 to calculate the tax. Or you can elect to include the child's income on the parent's return using Form 8814, which is simpler but may result in a slightly higher tax bill. For most custodial savings accounts, neither form is needed because the interest stays well below the threshold.

Impact on Financial Aid

Custodial accounts are reported as the student's asset on the FAFSA. Student assets are assessed at 20% per year, meaning the FAFSA formula assumes 20% of the account balance is available to pay for college each year. A custodial account with $25,000 reduces the student's financial aid package by approximately $5,000 per year, or $20,000 over four years.

By comparison, parent-owned accounts (joint savings, 529 plans) are assessed at only 5.64%. The same $25,000 in a parent-owned 529 reduces aid by $1,410 per year, or $5,640 over four years. The difference is $14,360 in financial aid eligibility. For families who expect to qualify for need-based financial aid, this is the single strongest argument for using a 529 plan or joint savings account instead of (or in addition to) a custodial account.

Investment Options in Custodial Accounts

Unlike a joint savings account (which only holds cash), custodial brokerage accounts can hold a diversified portfolio. Common investment options include total stock market index funds (like VTSAX or VTI), target-date funds, individual stocks, bonds, certificates of deposit, and money market funds. For a child with a 15 to 18 year time horizon, a diversified stock index fund has historically produced average annual returns of 8 to 10%, far exceeding the 3 to 5% APY of a savings account.

The trade-off is volatility. A savings account balance never goes down. An investment portfolio can lose 20 to 40% in a single year during a market downturn. For money that will be needed at a specific point (like when the child turns 18), a gradually shifting allocation from stocks to bonds and cash over the final 3 to 5 years is a common strategy, similar to the glide path used in target-date retirement funds.

When to Avoid a Custodial Account

Do not use a custodial account if: you want the flexibility to redirect the money to a different child or purpose; your family expects to apply for need-based financial aid; you are not comfortable with your child having unrestricted access to the full balance at 18 or 21; or the money is intended specifically for college (use a 529 instead). Custodial accounts are best suited for genuine gifts where the donor intends the child to have full ownership and the financial aid impact is acceptable.