Custodial Roth IRA vs 529: which one first for your kid?

Every custodial Roth IRA vs 529 chart we found lines them up like 2 flavors of the same account.

They are not. 1 is a college account. The other is a retirement account with a gate on the front door, and the gate is a paycheck.

What is the difference between a custodial Roth IRA and a 529?

A 529 is built for education. A custodial Roth IRA is a Roth IRA in the kid's name, run by an adult until the kid reaches the age of majority, which FINRA says varies by state.

Here is what each one does, rule by rule.

The state deduction line comes from our state 529 article, where we counted the states and priced the break.

Can I open a custodial Roth IRA for my baby?

Not with money in it, unless the baby has earned pay. IRS Publication 590-A says you can contribute to a Roth IRA "if you have taxable compensation," and it sets no minimum age.

The IRS limits page puts the 2026 cap at $7,500 or, "if less, your taxable compensation for the year." A newborn's compensation is $0, so the cap is $0.

That is the whole reason the 529 goes first for a baby with no paycheck. It is not a verdict on which account is better. The Roth is closed until there is a paycheck, and a 4-month-old's resume is thin.

The 529 has no income gate at all. IRS Publication 970 says "There are no income restrictions on the individual contributors," and the kid needs no earnings to be the beneficiary.

What counts as earned income for a custodial Roth IRA?

Pay for work. IRS Publication 590-A says "compensation is what you earn from working," and it counts wages, salaries, tips, commissions and net self-employment income.

It does not count "interest income, and dividend income." So the growth in a kid's UTMA or savings account does not open a Roth.

The UTMA is its own comparison, and a different one. This page is about which account can take money first. UTMA vs 529 is about who ends up with the money and what it costs to get it out, priced across the tax drag, the exit and 4 years of FAFSA.

Family business pay has 1 more tax rule. The IRS says pay to a child under 18 from a parent's sole proprietorship, or a partnership where each partner is a parent, is not subject to Social Security and Medicare taxes. Income tax withholding still applies.

Paying a 6-year-old $7,500 to "consult" is the exact thing the reasonable-pay test exists for. The IRS wants pay for services performed, and a kindergartner's consulting practice is a hard sell.

Go over the cap and IRS Publication 590-A charges a 6% excise tax on the excess for each year it stays in, unless the excess and its earnings come out by the tax return due date, including extensions.

Can a custodial Roth IRA be used for college?

Yes, and how much it costs depends on which dollars come out. A Roth IRA splits into 2 piles: what went in, and what it earned.

What went in comes out first. IRS Publication 590-B lists the order as regular contributions, then conversion and rollover contributions, then earnings. It also says "You don't include in your gross income ... distributions that are a return of your regular contributions."

The earnings are where the rules live. A qualified distribution, fully tax-free, has to come after the 5-year period that starts with the first year a contribution was made, and be made at 59½ or later, on disability, after death, or for a first home up to $10,000 for life.

Before that, earnings pulled out are taxed and owe a 10% additional tax, unless an exception applies. 2 exceptions matter most for a young adult.

• Qualified higher education expenses. IRS Publication 970 says you "may owe income tax on at least part of the amount distributed, but you may not have to pay the 10% additional tax." So college waives the 10% only.
• First home, up to $10,000. Before the 5-year period is met, it waives the 10% only. After the 5-year period, it is 1 of the qualified distributions, so the earnings come out tax-free too.

We ran what that does to a teen with a summer job. $150 a month for the 36 months from 15 to 18, $5,400 in total, which needs at least $1,800 of taxable compensation in each of those 3 years.

For college, the 529 wins by $71. For anything else at 18, they tie at $5,860. The Roth's real edge is the bottom 2 rows.

The contributions can come back out with no tax and no 10%, while the earnings stay put. A 529 cannot do that, because each withdrawal is divided between earnings and basis on Form 1099-Q (IRS Publication 970).

And the Roth has a 65th birthday option the 529 does not. Left alone, that $5,990 becomes $159,246 at 65 on our 7%, with no tax on the way out. The long-hold math is in start age beats amount.

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How is a 529 taxed if the kid does not go to college?

Start with the good exit. Investor.gov says earnings spent on qualified higher education expenses "are not subject to federal income tax and, in many cases, state income tax."

Qualified is broader than tuition now. Investor.gov lists up to $20,000 a year per beneficiary for K-12 tuition and certain expenses, registered apprenticeship costs, and up to $10,000 total in student loan repayments.

The other exit costs more. IRS Publication 970 says a taxable distribution also owes "a 10% additional tax on the amount included in income," and only the earnings part is included.

On $150 a month from birth, that is $64,608 at 18, of which $32,208 is earnings. Cash it all out for something other than school and it nets $57,522 at a 12% federal rate, or $54,301 at 22%.

California also taxes the earnings part as income and adds 2.5% on top, per the state's Form FTB 3805P instructions. The 2.5% alone takes the 12% line down to $56,717, before California income tax on those earnings.

Before anybody pays that, there are softer exits.

• A scholarship. Publication 970 waives the 10% on money included in income because the kid got a tax-free scholarship, up to the scholarship amount. Income tax on the earnings still applies.
• A sibling. Publication 970 says changing the beneficiary to a member of the beneficiary's family has no income tax consequences.
• The kid's Roth IRA. The rollover below, with its own limits.

The state deduction is the 529's other lever. Whether yours is worth a higher fee is its own fight, and we ran it in best state 529 plan.

Who controls the money at 18 or 21?

This is where the 2 accounts split hardest.

In a 529, nothing hands over. NY 529's FAQ says money you contribute is generally a completed gift to the beneficiary, "but as the account owner, you'll still have control over it."

In a custodial Roth IRA, the kid owns the account from the start. FINRA says the designated adult "controls the account until the child reaches the age of majority, which varies by state."

After that, the kid decides. The contributions are theirs to pull out at any age, and nobody needs a dad's signature to do it. The 47-year hold only happens if the kid leaves it alone.

Does a custodial Roth IRA affect FAFSA?

The balance does not count. The 2026-27 FSA Handbook says the value of retirement plans, including "noneducation IRAs," "is not counted as an asset, but distributions do count as income."

That second half matters for a Roth used for college. The FAFSA asks for untaxed portions of IRA distributions, taken from Form 1040 line 4a minus 4b, and the Form 1040 instructions put Roth IRA withdrawals on line 4a. So a tax-free Roth withdrawal still shows up as income.

Timing matters too. The Handbook says the 2026-27 award year uses 2024 tax year information, so a withdrawal lands on a FAFSA 2 years later.

A 529 is reported, but where depends on who owns it. The Handbook says that for a dependent student, a 529 designated for that student "is reported as a parental investment." If the student is the beneficiary but not the owner, "the value is not reported as a student asset."

We did not put a dollar figure on aid. The formula depends on the whole family's income and assets, and a made-up aid number looks exactly like a real one.

How does the 529 to Roth IRA rollover work?

It is the bridge between the 2 accounts. The statute, 26 U.S.C. 529(c)(3)(E), lets a 529 move money into the beneficiary's Roth IRA with no tax, if every one of these holds.

• The 529 has been maintained for the 15-year period ending on the date of the rollover.
• It goes by direct trustee-to-trustee transfer to a Roth IRA for the same beneficiary.
• Contributions made in the last 5 years, and their earnings, do not qualify.
• Each year is capped at the Roth IRA limit, minus anything else the kid put in an IRA that year.
• The lifetime total stops at $35,000.

That yearly cap points back to the Roth contribution limit in 26 U.S.C. 408A(c)(2), which runs through section 219: the smaller of the dollar limit or the kid's compensation. So the paycheck gate from the top of this page shows up again here.

The Roth income limits do not shrink it. Section 408A(c)(3)(E) adds the rollover back on top of any income-based reduction.

At the 2026 limit of $7,500, the full $35,000 takes 5 separate years. California does not follow along. Its FTB 3805P instructions say these rollovers are included in California income "and subject to an additional tax of 2½%."

Here is what the bridge does on our numbers. $150 a month into a 529 from birth, then rollovers of $7,500 at 18, 19, 20 and 21, and $5,000 at 22.

At 22 the 529 still holds $44,587 if none of it went to school. The $821,083 is 65 years of nominal dollars, so inflation takes a large bite out of what it buys. It also assumes the kid earned at least $7,500 in each of the 4 full-rollover years and at least $5,000 at 22, and the limit never moved.

The 5-year rule does not bite in this setup. Contributions made before age 13 total $23,400, and they plus their earnings are the money a rollover at 18 draws on.

Trump Accounts follow different rules again, and we ran those against the 529 in Trump Account or 529.

Should I open a custodial Roth IRA or a 529 first?

We do not know your kid, your state or your tax bracket. What we can do is sort the rules by situation, because the paycheck decides the order more than any preference does.

Read the top row again. For a baby, "which first" answers itself, because only 1 of the 2 accounts will take the money.

For a teen with a paycheck, it stops being either-or. The accounts do different jobs, and the rollover connects them later.

Frequently asked questions

Can I open a custodial Roth IRA for my baby?

Only if the baby has taxable compensation. The 2026 cap is the smaller of $7,500 or the kid's compensation, so a baby with no pay has a cap of $0. Interest and dividends do not count as compensation.

Is a custodial Roth IRA better than a 529 for college?

For money spent on college, the 529 nets more in our model: $5,990 against $5,919 on 36 months of $150 at 7% and a 12% rate. College waives the Roth's 10% additional tax, but income tax on earnings still applies.

Can a custodial Roth IRA be used for college?

Yes. Contributions come out first with no tax, per IRS Publication 590-B. Earnings taken out for qualified higher education skip the 10% additional tax but are still taxed as income unless the 5-year period is met and the owner is 59½ or older, or another qualifying event applies.

Does a custodial Roth IRA affect FAFSA?

The balance does not. The 2026-27 FSA Handbook does not count noneducation IRAs as an asset, but distributions count as income. The FAFSA uses tax information from 2 years before the award year.

What counts as earned income for a custodial Roth IRA?

Wages, salaries, tips, commissions and net self-employment income, per IRS Publication 590-A. Pay from a parent's business counts when it is for real work, and IRS Publication 334 says deductible pay must be reasonable and for services performed.

How does a 529 to Roth IRA rollover work?

A 529 open 15 years can move money to the beneficiary's Roth IRA by direct transfer. Money added in the last 5 years does not qualify, each year is capped at the Roth limit ($7,500 in 2026) or the kid's compensation, and the lifetime cap is $35,000.

Who controls a custodial Roth IRA at 18?

The kid owns it from the start. FINRA says the designated adult controls the account until the child reaches the age of majority, which varies by state. A 529 stays under the account owner's control.

What happens to a 529 if my kid does not go to college?

The beneficiary can change to a family member with no income tax, per IRS Publication 970. Cashed out instead, the earnings are taxed plus a 10% additional tax, so $150 a month from birth nets $57,522 at a 12% rate.

Checked Sep 16, 2026: 2026 IRA limit $7,500, capped at the kid's taxable compensation, Roth contributions out first with no tax, qualified Roth distributions after the 5-year period and 59½ or a qualifying event, first home exception up to $10,000, 529 non-qualified earnings taxed plus 10% and California's extra 2.5%, 529 to Roth IRA rollover after 15 years with a $35,000 lifetime cap and a 5-year lookback, and the 2026-27 FSA Handbook treatment of IRAs and 529s. Rates and limits move, so check the date on this line before you lean on it.