Can I have both a 529 plan and a custodial account for the same child?

Yes, and many families do. There is no rule against holding both, and no combined contribution limit across account types. A common split is funding the 529 up to your state's tax deduction cap first, then adding a smaller UTMA for goals that are not education and for hands-on teaching.

At what age does my child take control of a custodial account?

It depends on your state's Uniform Transfers to Minors Act rules, most commonly 18 or 21. California and a few other states allow the account to be written to terminate as late as 25, but only if it is set up that way when opened. Confirm your state's age with the brokerage before funding the account, since extending it later is usually not possible.

Does a 529 plan or a custodial account hurt financial aid more?

A custodial account hurts more. Under the FAFSA formula, student-owned assets like a UTMA are assessed at 20%, while parent-owned assets including a parent-owned 529 are assessed at a maximum of 5.64%. On a $20,000 balance that is roughly a $4,000 versus $1,128 hit to aid eligibility per year.

What happens to 529 money if my child does not go to college?

You have four options and none of them forfeit the money. Change the beneficiary to another qualifying family member, use it for trade school or an apprenticeship registered with the Department of Labor, put up to $10,000 lifetime toward student loans, or roll up to $35,000 lifetime into the beneficiary's Roth IRA under the SECURE 2.0 Act if the account is at least 15 years old. A straight non-qualified withdrawal costs income tax plus a 10% penalty on the earnings only.

Do custodial accounts get taxed every year?

Only on investment income, and often at zero. Under the IRS kiddie tax rules for 2025, the first $1,350 of a child's unearned income is untaxed and the next $1,350 is taxed at the child's own rate. Income above roughly $2,700 is taxed at the parents' marginal rate and reported on Form 8615.

By the Penny Time editorial team July 30, 2026

Reviewed by the Penny Time editorial team

Part of our Investing hub.

529 Plan vs Custodial Account (UTMA/UGMA): Which One Fits Your Goal

Both accounts hold money for your kid. That is where the similarity stops. A 529 plan is built for education and pays you back in tax-free growth if you use it that way. A custodial account (UTMA or UGMA) is built for anything, and the price of that freedom is that the money is legally your child's from day one, and they take control of it somewhere between 18 and 25 depending on your state.

Most comparison pages you will find are published by banks and brokerages, and they tend to bury the two facts that actually change a parent's mind: the handoff at the age of majority, and how each account is treated when you file for financial aid. Here is the version with those facts up front.

The short answer, keyed to what you want

What you actually want	Pick this	Why
Pay for college, grad school, or trade school	529 plan	Growth and withdrawals are federal-income-tax-free for qualified education costs. Many states add a deduction or credit on contributions.
A first car, a wedding, a business, a gap year, an apartment deposit	Custodial UTMA	No restriction on what the money is spent on once your child controls it.
Maximize need-based financial aid	529 plan	A parent-owned 529 counts as a parental asset, assessed at up to 5.64% on the FAFSA. A custodial account is the student's asset and is assessed at 20%.
Teach investing with real money your kid can see and touch	Custodial UTMA	You can hold individual stocks and ETFs your child picks, and they legally own the results.
Keep control of the money past age 18	529 plan	You stay the account owner. You can change the beneficiary to another family member.
You want both	529 first, then UTMA	Fund education tax-free, then layer a smaller custodial account for the teaching and the non-college goals.

The age-of-majority handoff nobody puts in the headline

A custodial account is an irrevocable gift. The moment you deposit money, it belongs to your child. You are the custodian, not the owner, and your job legally ends on a specific birthday set by state law. In most states that is 18 or 21. A handful, including California, let the account be written to terminate as late as 25 if you set it up that way at the start. Check your own state before you open the account, because you generally cannot extend the date later.

On that birthday, the brokerage retitles the account into your child's name. Nothing stops them from cashing it out. That is not a hypothetical risk, it is the design of the account. If handing an 18-year-old a five-figure brokerage balance sounds like a bad plan for your kid specifically, a 529 keeps you in the owner's seat indefinitely.

The flip side: if you want your kid to actually practice deciding, a custodial account with a few thousand dollars in it and a running conversation about it beats a locked account they never see. Start the conversation early with something small, like our birthday money calculator, so a large handoff at 18 is not the first financial decision they have ever made.

Financial aid: the 5.64% vs 20% gap

Under the FAFSA formula, parental assets are assessed at a maximum of 5.64% when calculating what your family is expected to contribute. Student-owned assets are assessed at 20%. A custodial account is a student asset. A parent-owned 529 is a parental asset, even though the child is the beneficiary.

Run the numbers on $20,000: in a parent-owned 529 it raises your expected contribution by roughly $1,128. In a UTMA it raises it by about $4,000. Same money, nearly $2,900 a year of difference in aid eligibility. Grandparent-owned 529s used to trigger a separate penalty when withdrawn, but the FAFSA Simplification Act removed cash support and other-people's-money questions, so grandparent 529 distributions no longer count as student income.

Taxes: tax-free vs the kiddie tax

Neither account gives you a federal deduction on contributions. What differs is what happens to the growth.

529: Earnings grow tax-deferred and come out completely tax-free for qualified expenses (tuition, fees, books, required equipment, room and board if enrolled at least half time, up to $10,000 per year for K-12 tuition, and up to $10,000 lifetime toward student loans). Over 30 states offer a state income tax deduction or credit for contributions.
Custodial (UTMA/UGMA): The child pays tax on the investment income under the kiddie tax rules. For 2025, the first $1,350 of unearned income is untaxed, the next $1,350 is taxed at the child's rate, and anything above roughly $2,700 is taxed at the parents' marginal rate (IRS Form 8615). Modest accounts often owe nothing.

The 529 penalty for non-qualified use is real but narrower than people assume: you owe ordinary income tax plus a 10% penalty on the earnings portion only, never on your contributions. And since 2024, the SECURE 2.0 Act lets you roll unused 529 money into the beneficiary's Roth IRA, up to a $35,000 lifetime cap, if the account has been open 15 years. That change removed the biggest historical argument against 529s, which was the fear of over-funding a kid who never goes to college.

What each one costs to open

Both are free to open at most providers. 529 plans charge an annual expense ratio on the underlying funds, typically 0.10% to 0.60% for direct-sold plans, and advisor-sold plans cost meaningfully more for no extra tax benefit. Compare your own state's direct-sold plan first, since the state tax deduction usually only applies to your home-state plan. Custodial accounts at the major brokerages have no account fee and no minimum, and you pay whatever the funds you buy charge.

How to decide in five minutes

Write down the goal in one sentence. If the sentence contains the word college, tuition, or degree, open a 529.
Look up your state's age of majority for UTMA accounts. If 18 makes you uneasy, that is a real signal, not squeamishness.
Check whether your state gives an income tax deduction for 529 contributions. If yes, that is free money on contributions you were making anyway.
Decide whether you need your child to be able to see and manage the account. Teaching value is the strongest case for a custodial account.
If you are still torn, fund the 529 to your state deduction cap, then put the rest in a custodial account.

Neither one replaces the habit

An account is a container. What determines whether your kid handles money well at 22 is the ten years of small decisions before it, not the balance. A child who has split their own allowance into spend, save, and give buckets since age seven arrives at a custodial handoff with practice. A child who has only watched a number grow arrives with a windfall. Build the habit alongside the account with an age-appropriate chore chart, a working allowance amount, and regular wants vs needs conversations. For older kids running their own numbers, the budget planner gives them something concrete to argue with you about.

If you already read our comparison of Trump accounts vs 529s vs Roth IRAs for kids, this is the narrower version of the same question: the 529 and the custodial account are the two that most families actually end up choosing between, and the choice comes down to whether the money has one job or many.

Frequently Asked Questions

: Yes, and many families do. There is no rule against holding both, and no combined contribution limit across account types. A common split is funding the 529 up to your state's tax deduction cap first, then adding a smaller UTMA for goals that are not education and for hands-on teaching.
: It depends on your state's Uniform Transfers to Minors Act rules, most commonly 18 or 21. California and a few other states allow the account to be written to terminate as late as 25, but only if it is set up that way when opened. Confirm your state's age with the brokerage before funding the account, since extending it later is usually not possible.
: A custodial account hurts more. Under the FAFSA formula, student-owned assets like a UTMA are assessed at 20%, while parent-owned assets including a parent-owned 529 are assessed at a maximum of 5.64%. On a $20,000 balance that is roughly a $4,000 versus $1,128 hit to aid eligibility per year.
: You have four options and none of them forfeit the money. Change the beneficiary to another qualifying family member, use it for trade school or an apprenticeship registered with the Department of Labor, put up to $10,000 lifetime toward student loans, or roll up to $35,000 lifetime into the beneficiary's Roth IRA under the SECURE 2.0 Act if the account is at least 15 years old. A straight non-qualified withdrawal costs income tax plus a 10% penalty on the earnings only.
: Only on investment income, and often at zero. Under the IRS kiddie tax rules for 2025, the first $1,350 of a child's unearned income is untaxed and the next $1,350 is taxed at the child's own rate. Income above roughly $2,700 is taxed at the parents' marginal rate and reported on Form 8615.

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