Investing for Kids: The Complete Guide for Parents (2026)
Which account fits which goal, how to start, how much to put in, and how to bring your kid along, all in one place.
Key takeaways
- A child can't open a brokerage account alone, so an adult opens a UTMA, 529, custodial Roth IRA or Trump Account and manages it until the child takes over.
- The goal picks the account: a 529 for education, a custodial Roth IRA for retirement if the child has earned income, and a UTMA or Trump Account for a general head start.
- Starting early matters more than the amount: at a hypothetical 6% return, $50 a month from birth grows to about $19,368 by 18 on $10,800 of deposits.
Investing for kids means putting money for a child into an account where it can grow for years, usually in funds that own pieces of many companies. A child can't open a brokerage account alone before 18, so an adult opens one of a few special account types and manages it until the child takes over. This guide covers which account fits which goal, how to start, and how to bring your kid along. If you've never invested for yourself, investing for beginners covers the basics first.
The accounts, side by side
Most families pick from four account types. Each has a different job, and many end up with more than one.
| Account | Best for | Who controls it | The catch |
|---|---|---|---|
| UTMA / UGMA | Any goal that benefits the child | You, until your state's transfer age (usually 18 or 21) | It becomes your child's money outright at that age, and it counts heavily on the FAFSA |
| 529 plan | College, trade school and some K-12 costs | You, the account owner, for as long as you like | Earnings spent on non-education costs are taxed plus a 10% penalty |
| Custodial Roth IRA | Retirement, with tax-free growth | You, until the transfer age | Your child needs earned income from real work to contribute |
| Trump Account | A long-term head start, with a $1,000 federal seed for eligible kids born 2025 through 2028 | A parent or guardian until 18 | Generally no withdrawals before 18, and a $5,000 yearly cap across all contributors |
If you're torn between two of these, the head-to-head guides go deeper: 529 vs. UTMA, 529 vs. Roth IRA, and Trump Account vs. 529 vs. Roth. For money your child will use within a few years, a kids' savings account or savings bonds may fit better.
How to start
- Name the goal. College points to a 529. Retirement points to a custodial Roth IRA if your child has a job. A general head start points to a UTMA or a Trump Account.
- Open the account. You'll need your child's Social Security number and about 15 minutes. The custodial account walkthrough shows each screen.
- Set up an automatic contribution. A small monthly amount that never needs remembering beats a bigger one you mean to send.
- Choose a simple investment. Many families start with a broad index fund or ETF. The first-portfolio guide walks through the decisions without naming picks.
For the full step-by-step version, see how to start investing for your child.
How much to put in
Less than most parents assume. At a hypothetical 6% return, $50 a month from birth is $10,800 of deposits and about $19,368 by 18. Starting early matters more than the amount. Try your own numbers in the kids investment calculator.
Free money can help too. Eligible newborns get a $1,000 federal seed in a Trump Account, and several states seed a 529 for babies born there. See kids investing programs for what your child may already qualify for.
Bringing your kid along
The account grows on its own. What your child learns from it depends on whether they ever see it. A five-year-old can understand that they own a tiny piece of a company they know. A teenager can follow why the balance dipped and recovered. The by-age guide has what to say at each stage, and how to show your child their account covers the first conversation. If an app is part of the plan, check what makes a kids' investing app safe.
Five mistakes worth avoiding
- Forgetting the handoff. A UTMA becomes your child's at your state's transfer age, no strings attached. Check yours in the 50-state table.
- Ignoring financial aid. The FAFSA counts a UTMA as the student's asset, which reduces aid more than a parent-owned 529. See how custodial accounts affect aid.
- Over-funding a Roth. Contributions can't exceed what your child earned that year.
- Missing a tax filing. Investment income above a yearly threshold can trigger the kiddie tax.
- Skipping the successor form. Name a successor custodian or successor owner so someone can manage the account if you can't.
Where MemoryBank fits
Once accounts are open, they tend to live in different places: a 529 at the state plan, a UTMA at a brokerage, a Trump Account somewhere else. MemoryBank connects the accounts you already have and gives your child one kid-friendly view of what they own, with explanations at their level.
MemoryBank is not a brokerage. It cannot receive, keep or transfer securities. It's an education and display tool, not a financial or tax advisor. For decisions about which account or investment fits your family, talk with a financial professional or tax preparer.
Frequently asked questions
What is the best way to invest for a child?
It depends on the goal. A 529 plan suits education savings, a custodial Roth IRA suits retirement if the child has earned income, and a UTMA custodial account or a Trump Account suits a general head start. Many families use more than one.
Can a child invest in stocks?
Yes, through an account an adult opens for them. A minor can't open a brokerage account alone, so a parent or other adult opens a custodial account, 529 or custodial Roth IRA and manages it until the child reaches the transfer age.
How much money do you need to start investing for a kid?
Very little. Many brokerages have no minimum to open a custodial account, and many 529 plans accept small automatic contributions. At a hypothetical 6% return, $50 a month from birth grows to about $19,368 by 18 on $10,800 of deposits.
What should I invest in for my child?
That's a personal decision, and it depends on the goal and timeline. Many families start with a broad index fund or ETF because it spreads money across many companies at low cost. A financial professional can help match investments to your situation.
At what age should I start investing for my child?
As early as you can. Money invested at birth has 18 years to compound before college and decades more before retirement. Eligible children born from 2025 through 2028 can also get a $1,000 federal seed in a Trump Account.
Can my child see their investments in MemoryBank?
Yes. MemoryBank connects the custodial, 529, Roth and Trump Accounts you've already opened and shows your child a kid-friendly view of their balance and holdings. It doesn't hold or move money.
What to do this week
- Write down the goal for the money: college, retirement, or a general head start.
- Check whether your child qualifies for a free seed program.
- Open the account that fits the goal and set a monthly contribution you can keep up.
Written by Josh Ackerman
Founder of MemoryBank. A computer scientist and M.B.A. with 20+ years of investing and technology experience, Josh built the first MemoryBank in his basement so his three kids could watch their own accounts grow. More about Josh →
See it in one place
MemoryBank shows your kid's UTMA, 529, Roth IRA, brokerage, and savings in one place — across every institution — and explains their accounts and how investing works in age-appropriate terms they actually understand. It runs in any browser and as an app on iPhone and Android.
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Related guides
How to Start Investing for Your Child: A Step-by-Step Guide
The five-step sequence — pick the account, open it, fund it, invest simply, let it ride — and why starting is everything.
Trump Accounts vs. 529 vs. Roth IRA: Which One for Your Kid?
Three powerful accounts, side by side — on taxes, flexibility, control, and what each is actually best at.
Kids Investment Calculator: What Could Your Child's Account Grow To?
Enter a starting amount, a monthly contribution and your child's age to see what the account could grow to, and what waiting costs.
MemoryBank is a display and education tool, not a financial advisor. Nothing here is investment, tax, or legal advice. Verify program details with the IRS, your tax advisor, or a licensed financial professional before making decisions.