Can Teenagers Invest in Stocks? The Complete Guide

Yes, teenagers can invest in stocks. Since you are under 18, you cannot open a standard brokerage account on your own. But with a parent or guardian's help, you can own stocks, ETFs, and index funds in a custodial account starting at any age.

The S&P 500 has delivered an average annual return of approximately 10.2% since 1926, according to NYU Stern professor Aswath Damodaran's historical returns data. Over the past 10 years, that average has been even higher at 14.8%. A teenager who starts investing at 15 has 50 years of compounding before retirement. That time advantage is nearly impossible to replicate later.

This guide covers how the legal side works, what accounts to use, what to actually invest in, and what to avoid.

The Legal Reality: Why You Need a Parent

In the United States, you must be 18 years old (21 in some states) to enter into a legal financial contract. Opening a brokerage account is a financial contract, which is why brokerages will not let minors open accounts independently.

The solution is a custodial account. A parent or legal guardian opens the account as the custodian, but the account is legally in your name and the money belongs to you. They manage it on your behalf until you reach the age of majority in your state, at which point ownership transfers to you automatically.

Two main custodial account types exist:

If you have any income from a job, the custodial Roth IRA is almost always the smarter choice because your investments grow completely tax-free for decades. The 2026 contribution limit is $7,500, up from $7,000 in 2025, according to the IRS.

If you do not have earned income yet, a custodial brokerage account (UGMA or UTMA) lets you invest with no income requirement. For a deeper comparison, see our guide on custodial accounts for teens.

Which Brokerages Let Teens Invest?

Several major brokerages offer custodial accounts with no minimums:

For most teenagers, Fidelity is the best starting point. Their Youth Account (ages 13 to 17) is specifically designed for teens and comes with a debit card, no fees, fractional shares, and direct access to invest with parental oversight built in.

What Should Teenagers Actually Buy?

This is where most beginners get tripped up. The most exciting-sounding investment options (individual stocks, trending stocks, crypto) are also the ones most likely to lose you money.

Index Funds and ETFs: The Smart Starting Point

An index fund or ETF holds a tiny slice of hundreds or thousands of companies at once. When you buy one share of VTI (Vanguard Total Stock Market ETF), you effectively own a piece of over 3,700 U.S. companies.

Why this matters for teenagers:

• You are not betting on any single company succeeding or failing
• Historical returns for broad market index funds average around 10% per year over long periods
• Fees are extremely low (often 0.03% or less per year)
• You do not need to research or monitor individual companies

Recommended starting investments for teen investors:

Any one of these is a solid, sensible starting investment. You do not need all of them. Pick one and contribute to it consistently.

Individual Stocks: Proceed With Caution

Buying individual stocks is possible in a custodial account and can be a great learning experience in small amounts. But there are real risks to understand:

• If a company's stock drops 50%, you lose 50% of what you put in that stock
• Even professional fund managers fail to beat broad index funds the majority of the time over 10+ year periods
• Individual stocks require research, attention, and emotional discipline most beginners underestimate

If you want to buy individual stocks, use a small portion of your portfolio (10 to 20%) as a "learning account" and put the majority in index funds.

What to Avoid

Penny stocks. Stocks trading under $5, often marketed as "hidden gems," are statistically one of the worst investments available. They are low-priced because the companies are struggling or fraudulent. Avoid entirely.

Day trading. Studies consistently show that over 80 to 90% of day traders lose money over time, and the ones who make money are usually institutional traders with technology and information you do not have.

Cryptocurrency. Not necessarily a bad investment for adults with high risk tolerance, but as a starting investment for teenagers, it is far too volatile to build foundational wealth on. Bitcoin has dropped 50 to 80% from its highs multiple times. Stick to index funds until you have a solid foundation. For a deeper look, see our analysis of what research says about crypto as an investment.

"Hot stock tips" from social media. TikTok, Reddit, YouTube: these platforms are full of people promoting stocks they already own. The information is rarely accurate and the intent is often to create demand that benefits the promoter.

How Fractional Shares Changed Everything for Teen Investors

Ten years ago, if you wanted to invest in Amazon at its peak price, you needed thousands of dollars just to buy one share. Today, fractional shares let you invest any dollar amount in any stock or ETF.

Want to invest $25 in VTI? You can. Want to put $10 into Apple? Done. Most major brokerages now support fractional shares, which means the minimum to start investing is effectively $1.

This is a big deal for teenagers. You do not need to save up $500 before you start. You can start with your next paycheck, no matter how small. Setting up automatic monthly purchases is the single best way to build the habit.

Understanding the Numbers: What Your Investment Could Become

Let's say you invest $50/month in VTI starting at 17, and do it consistently:

$50/month. That is one less takeout dinner per week. And it becomes $236,000 by retirement, all from starting at 17. The Compound Interest Calculator lets you plug in your own numbers to see how different amounts and starting ages change the outcome.

Real-World Examples

Example: Zoe, 15, receives birthday money each year

Situation: Zoe does not have a job yet, so she cannot open a Roth IRA. But she receives $500 to $800 in birthday money annually and her parents agreed to put it in a custodial UGMA account at Fidelity.

What she did: She buys VTI with every deposit. At 15, she already has $1,400 invested.

Result: If Zoe never adds another dollar after age 18 (when she will have roughly $2,500 invested), that money at 8% annual growth reaches approximately $88,000 by age 65.

Example: Andre, 16, works summers and part-time during school

Situation: Andre earns about $3,500/year. His dad helped open a custodial Roth IRA at Charles Schwab. Andre invests $200/month in a mix of SCHB (80%) and a small amount in Apple stock he picked himself (20%).

What he did: He treats the index fund as his serious investment and the individual stock as his "learning" investment.

Result: After one year, Andre's index fund has grown predictably while his Apple position has fluctuated, giving him hands-on experience with both stability and volatility without risking his entire portfolio.

Common Questions About Teen Investing

Can I open an account without my parents? No, not until you are 18. A parent or legal guardian must co-sign.

What happens to the account when I turn 18? The custodian's control ends and you become the sole account owner. For Roth IRAs, the account simply continues as your own Roth IRA. For UGMA/UTMA accounts, full control transfers to you.

Can my parents take the money back? In a UGMA/UTMA account, once money is contributed, it belongs irrevocably to the minor. Parents cannot take it back. This is both a protection and something to be aware of.

Do I pay taxes on gains? In a custodial brokerage account, yes. Investment gains are taxable, at favorable rates for most low-income teenagers. In a custodial Roth IRA, no. Growth is completely tax-free.

What if I need the money before retirement? In a Roth IRA, you can always withdraw your contributions (not earnings) at any time without penalty. In a custodial brokerage account, you can sell and withdraw at any time.

Your Starting Checklist

1. Talk to your parent or guardian about opening a custodial account
2. If you have any earned income, prioritize a custodial Roth IRA (Fidelity or Schwab)
3. If no earned income, open a custodial UGMA brokerage account
4. Start with one index fund: VTI, FXAIX, or SCHB
5. Set up automatic monthly purchases, even $25 counts
6. Do not check the account value every day. Invest consistently and let time do the work

The teenagers who build wealth are the ones who started early, stayed consistent, and did not panic when markets moved. Share this with someone who needs to read it.

This post is for informational purposes only and does not constitute financial advice. Investment values fluctuate and past returns do not guarantee future results.