Best Custodial Accounts for Kids in 2026: An Honest Comparison

The best-known places to open a kid's investment account in 2026 are Fidelity, Charles Schwab and Vanguard, which offer custodial accounts and custodial Roth IRAs with no minimums, plus app-based options like Greenlight and Acorns Early. At the major brokerages the core features are nearly identical, so the account type you pick matters more than the brand.

Most "best custodial account" lists come from sites paid a referral fee when you click. MemoryBank connects to whichever account you open and earns nothing from the choice, so this comparison can stay plain. What your child sees of the account afterwards is a separate decision, and you can see how that side works once you've chosen.

First: "best" depends on the account type, not the logo

Pick the kind of account before the provider. A UTMA custodial brokerage account is the flexible default: there's no earned-income requirement, and the money is legally your kid's. A custodial Roth IRA adds decades of tax-free growth once your kid has earned income. A 529 is built for education. The head-to-heads are in 529 vs. UTMA and 529 vs. Roth IRA. Some children also qualify for free government or charity money; see kids investing programs.

The major brokerages, compared

At the large brokerages, custodial accounts have no minimum to open and no monthly fee. The table shows the details that differ, as each firm described them in October 2026.

The pattern is the point. No minimums and no maintenance fees are now standard. The tiebreakers are fractional shares, so small contributions buy something real, fund costs, app quality, and whether you already have accounts somewhere. Keeping the family's statements in one place is a fair reason to stay with your current brokerage.

Teen-owned accounts: a different thing

Fidelity Youth and the Schwab Teen Investor account are for ages 13 to 17, and the teen places their own trades. They aren't custodial accounts. Fidelity's is owned by the teen with a parent overseeing it, and Schwab's is a joint account with a parent. They suit a teen who wants to practice investing. Money meant to grow untouched until adulthood usually sits in a custodial account instead.

Kids' investing apps: know what you're paying for

App-first products charge a monthly subscription. Greenlight is a debit card app with chores and spending controls, and investing comes with its Max plan and above, which Greenlight lists at $10.98 a month per family. Acorns Early Invest is a UTMA/UGMA account that comes with Acorns' Gold subscription and invests in a set portfolio.

These apps are useful for money-management practice. For long-term investing, a fee takes a bigger bite out of a small balance than a free brokerage account does, and they generally don't offer custodial Roth IRAs. Stockpile, a kids' stock-gifting app, closed in April 2026 and moved its accounts to other firms. For the full breakdown, see the best investing apps for kids, and for side-by-side looks, MemoryBank vs. Greenlight and MemoryBank vs. Acorns Early.

Robo-advisors: one now offers custodial accounts

Wealthfront launched a custodial account in June 2026, invested automatically in index funds for its usual advisory fee. Betterment says it doesn't offer custodial accounts for minors. At a regular brokerage, a target-date or index fund inside a custodial account is another hands-off route.

How to judge whether a kids' investing app is safe

A safe app is one where you can confirm who keeps the money and what your child can do with it. Before signing up, check four things:

• Which brokerage or bank keeps the money, and whether it's a SIPC member or FDIC-insured.
• Whose name the account is in: the child's, the teen's or yours.
• What the child can do alone, such as trade, spend or withdraw.
• How the app handles a child's data.

The full checklist is in the safest investing apps for kids.

What matters over 18 years

• No account fees. These are standard at the major brokerages now.
• Low fund costs. A small difference in a fund's expense ratio compounds over decades.
• Fractional shares. A $25 birthday deposit can then buy part of a fund instead of sitting as cash.
• Visibility for the kid. The account only teaches if your child can watch it. MemoryBank connects to accounts at any of these firms and shows your kid what they own in a dashboard built for them. If the family's money is spread across a few places, see how to see all your kid's investment accounts in one place.

MemoryBank is an education and display tool, not a broker or financial advisor, and has no referral or compensation arrangement with any provider named here. MemoryBank is not a brokerage. It cannot receive, keep or transfer securities. Provider features and fees are as described in October 2026 and change; verify current terms before opening an account.

For a teen who wants to trade, the best investing apps for teens compares the teen-owned accounts.

Frequently asked questions

What is the most popular investing account for kids?

Custodial accounts (UTMA/UGMA) at large brokerages such as Fidelity, Charles Schwab and Vanguard are the best-known option, and all three also offer custodial Roth IRAs. App-based options like Greenlight and Acorns Early are popular too, but they charge a monthly subscription.

What is the best custodial account for a kid?

At the major brokerages the core features are nearly identical: no minimums, no monthly fees, and custodial Roth IRAs. The differences are fractional shares, fund costs, app quality, and whether your own accounts are already there. The account type, UTMA, 529 or custodial Roth, matters more than the brand.

What are the best stock market apps for kids under 18?

It depends on who does the investing. In a custodial account the parent invests for the child. Teen-owned accounts such as Fidelity Youth and the Schwab Teen Investor account let 13- to 17-year-olds place their own trades with a parent involved. Debit card apps like Greenlight add investing on higher-priced plans.

Are kids' investing apps like Greenlight custodial accounts?

Some are. Acorns Early Invest is a UTMA/UGMA custodial account. Greenlight is a debit card app with investing on its higher plans. Both charge a monthly subscription, which matters more on a small balance than a free brokerage account would.

Do you have to pay to open a custodial account?

No. The major brokerages offer custodial accounts with no opening cost and no minimum. Vanguard charges a $25 yearly fee unless you choose electronic documents. The costs worth watching are fund expense ratios and, with apps, monthly subscriptions.

Can you switch brokerages later?

Yes. A custodial account can be transferred to another brokerage, keeping the same custodial registration. Because the money is legally the child's, it has to move into another custodial account for the same child, not into a parent's account.

The bottom line

Choose the account type for the goal first. After that, any major brokerage with no fees and fractional shares does the job, and low-cost funds inside it matter more than the logo. The last piece is making sure your kid can watch the account grow.