Kids & TeensIntermediate5 min read

Teaching kids to invest

Custodial accounts, age-appropriate investing, and the best first investments for young people.

Most adults are afraid of investing because nobody taught them when the stakes were low. A 12-year-old with $200 in a custodial account who watches their money go up 15% and then drop 10% learns more about market behavior in six months than most adults learn in a decade of reading articles. The goal isn't to make your kid rich — it's to make investing feel normal before they have real money to manage.

Custodial accounts: UTMA vs. UGMA

  • UGMA (Uniform Gifts to Minors Act) — allows adults to open a brokerage account on behalf of a minor. Can hold stocks, bonds, mutual funds, and cash.
  • UTMA (Uniform Transfers to Minors Act) — same thing but broader. Can also hold real estate, patents, and other assets. Available in most states.
  • Both transfer full ownership to the child at the age of majority (18 or 21 depending on the state). You cannot take the money back.
  • The first $1,300 of investment income is tax-free. The next $1,300 is taxed at the child's rate. Above that, it's taxed at the parent's rate (the 'kiddie tax').
  • UGMA/UTMA assets count heavily against financial aid eligibility. If college aid is a concern, consider a 529 plan instead for education-earmarked money.

Age-appropriate investing lessons

  • Ages 6–10: Let them pick a company they know (Apple, Disney, Nike). Buy one share. Check the price together monthly. The goal is ownership and curiosity, not returns.
  • Ages 11–14: Introduce the concept of index funds. Compare their single stock pick to a total market fund over the same period. Talk about diversification in concrete terms.
  • Ages 15–17: Open a custodial Roth IRA if they have earned income. Discuss the difference between speculation and investing. Let them experience a market downturn without selling.

The best first investments

  1. A total stock market index fund (VTI, SWTSX, FSKAX) — broad diversification, rock-bottom fees, no decisions to make.
  2. An S&P 500 index fund (VOO, SWPPX, FXAIX) — slightly more concentrated in large companies but equally simple.
  3. A single share of a company they use daily — not because it's optimal, but because ownership of something tangible creates engagement.
Avoid teaching investing through stock-picking contests or day-trading simulators. They teach speculation and gambling instincts, not investing. The most important lesson is that wealth builds slowly through consistent ownership of diversified assets — and the hardest part is doing nothing during a downturn.

What small money becomes: the motivation chart

Value at age 40 of $50/month invested at a 8% average return, by starting age (estimates)
Start at 8~$62,000
Start at 14~$38,000
Start at 18~$28,000
Start at 25~$17,000

Show a kid this chart with their own age on it. Fifty dollars a month — allowance-and-birthday-money scale — becomes real wealth given a multi-decade runway, and every year of delay costs thousands off the far end. The point of showing it isn't to pressure a 10-year-old into maximizing returns; it's to make time itself visible. Kids intuitively believe money grows by adding more. The chart shows the truer thing: money grows by starting sooner, and they are currently holding the one advantage no adult can buy back.

Setting up the account: a 20-minute project

  1. 1
    Pick the account type

    Custodial brokerage (UTMA/UGMA) for general money; custodial Roth IRA if the kid has earned income; 529 if the money is really for college. For a teaching account, UTMA with a small balance is the usual choice.

  2. 2
    Open it at a major low-cost brokerage

    Fidelity, Schwab, and Vanguard all offer custodial accounts with no minimums and no fees. The parent controls it; the kid watches it.

  3. 3
    Fund it with an amount you can ignore

    $100-500 is plenty. This is tuition for a behavior class, not a college fund — keep the serious money in accounts built for serious money.

  4. 4
    Buy together, out loud

    Let the kid place the order with you: pick the fund or share, preview the cost, press buy. Ownership begins at the moment of purchase, not at the first gain.

  5. 5
    Schedule the check-in

    Once a month, five minutes, same day. Frequent enough to stay real, rare enough to teach that investors don't stare at prices.

The conversations each market moment unlocks

  • The first gain: 'You didn't do anything and you made $6. That's the whole idea — your money worked while you were at school.' Plant the ownership frame early.
  • The first drop: the most valuable moment in the entire project. 'It's down $11. We're not selling — we own the same amount of the company as yesterday. Drops are the price of the long-term returns.'
  • The dividend: 'The company shared its profit with its owners, and you're one of them.' Turn on reinvestment together and explain that the dividend just bought more shares that will pay more dividends.
  • The hot tip from a friend: don't forbid it — run the numbers together and, if the sandbox money allows, let them try a small position. A $30 loss on a hyped stock at 13 is a bargain vaccine.
  • The boring year: when nothing happens for months, say so. 'This is what investing looks like almost all the time.' Normalizing the boredom is half the training.
One share of the mouse vs. the market
The Riveras buy their 9-year-old, Lucia, one share of Disney (~$100) and $100 of a total-market index fund on the same day. Over two years, the Disney share swings dramatically — down 20% one stretch, up 15% another — while the index fund plods upward with a fraction of the drama. At the monthly check-ins, Lucia narrates both. By 11 she's articulated the core insight herself: 'The one company jumps around because it's just one company. The fund is everything, so it's calmer.' No textbook definition of diversification will ever beat having felt the difference for two years with her own $200.
Keep the trading apps away from the lesson
Slick zero-commission trading apps are engineered for engagement — confetti, streaks, price alerts, options a tap away. That design teaches checking and churning, which is the exact opposite of the habit you're building. Keep the kid's account at a boring brokerage with a boring interface, and when they eventually ask about the apps their friends use, treat it as a media-literacy conversation: who profits when you trade more often? (Hint: not you.)

Expect, and welcome, the uncomfortable questions — they're evidence the lessons are landing. 'Why don't we just buy whatever goes up the most?' opens the door to survivorship bias and why last year's winner is not a strategy. 'Is this gambling?' deserves a precise answer: gambling is a negative-sum bet on randomness; owning the market is buying a slice of every company's future profits, which have grown for a century because humans keep making things people want. And the hardest one — 'why is my friend's dad rich from crypto?' — earns the truest answer in finance: some people win lotteries too, and you never hear from the ones who didn't. A parent who answers plainly instead of dodging builds something rarer than investment knowledge: a kid who keeps asking them about money at 17, 22, and 30.

The finish line for this whole project isn't a portfolio balance — it's a teenager who has personally owned assets through a gain, a drop, a dividend, and a long stretch of nothing, and who found all four unremarkable. That kid arrives at their first real paycheck already knowing what to do with it, immune to both the fear that keeps their peers out of the market and the gambling instinct that wrecks the ones who do get in. Two hundred dollars and five minutes a month is a cheap price for that.

Check your understanding

1 of 3
The article calls one moment 'the most valuable moment in the entire project.' Which is it?

Not quite — try again.

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