What Age Can You Start Buying Stocks? Teen Investment Age Requirements Guide

Starting your investment journey early can be a game-changer for your financial future. The math is simple: the more time your money has to grow through compounding, the greater your potential returns. But before diving in, you need to understand the age requirements and account options available. Let’s break down exactly what age you need to be to buy stocks and explore how younger investors can get started today.

Understanding the Minimum Age to Buy Stocks

The core answer is straightforward: you must be at least 18 years old to open and manage a brokerage account completely on your own. However, this doesn’t mean younger investors are locked out of the stock market entirely.

Minors can begin investing before turning 18 through accounts opened with a parent, guardian, or trusted adult. The key difference lies in who controls the account and makes investment decisions. Some accounts allow minors to actively participate in investment choices, while others keep decision-making authority with the supervising adult.

The flexibility of these arrangements means that even teenagers as young as 13 can start building their investment portfolio, learning valuable lessons about money management and market dynamics that will serve them throughout adulthood.

Key Account Types and Their Age Requirements

The age requirement for investing varies depending on which type of account you choose. Here’s a quick overview of the main options available to younger investors:

Account Type 1: Joint Brokerage Accounts

Age requirement: No minimum age specified, though brokers may set their own limits

With a joint brokerage account, both the minor and adult co-owner share ownership of the investments and have equal say in investment decisions. This structure offers the most flexibility and control for young investors who want to actively learn about stock selection.

The adult remains responsible for tax obligations, but this account type provides access to the widest range of investment options. Many investment apps and platforms now offer joint accounts specifically designed for teens aged 13 and up.

Popular option: Fidelity Youth™ Account

• Opens for teens ages 13-17 with parent/guardian supervision
• Zero trading commissions on U.S. stocks and ETFs
• Minimum investment of just $1 for most securities
• Includes a free debit card with no monthly fees or ATM charges
• Built-in financial education features with reward incentives

Account Type 2: Custodial Brokerage Accounts

Age requirement: No strict minimum, though providers typically set age limits

In a custodial account, the minor owns the investments, but the adult custodian makes all investment decisions. The custodian cannot spend from the account except for the minor’s benefit. Upon reaching the age of majority—typically 18 or 21, depending on the state—the minor gains full control of the account.

These accounts offer tax advantages by sheltering certain amounts of unearned income from taxation annually. This structure is ideal for parents who want to invest on behalf of their children while maintaining control over investment choices.

Two types of custodial accounts exist:

• UGMA (Uniform Gifts to Minors Act): Restricted to financial assets like stocks, bonds, ETFs, and mutual funds. Adopted in all 50 states.
• UTMA (Uniform Transfers to Minors Act): Can hold both financial assets and physical property like real estate or vehicles. Available in 48 states (South Carolina and Vermont are exceptions).

Popular option: Acorns Early

• Available through Acorns Premium subscription ($9/month)
• Enables parents to create custodial investment accounts for minors
• Uses a “Round-Up” system to automatically invest spare change from daily purchases
• Average users invest around $30 monthly with this approach
• Focuses on long-term wealth building through consistent contributions

Account Type 3: Custodial Retirement Accounts

Age requirement: No minimum, provided the minor has earned income

If you’ve earned money through a job, babysitting, tutoring, or other work, you qualify to open a custodial retirement account. In 2023, you can contribute up to $6,500 annually (or your total earned income if less) into an IRA.

Two IRA options for minors:

• Traditional IRA: Contributions use pre-tax dollars, with taxes due upon withdrawal in retirement
• Roth IRA: Contributions use after-tax dollars, but growth is tax-free and withdrawals in retirement are penalty-free

For young earners in low tax brackets, a Roth IRA typically makes more sense since you lock in minimal tax rates now and enjoy decades of tax-free growth.

Popular option: E*Trade IRA for Minors

• Available for minors under 18 with earned income
• Choose between Traditional or Roth IRA structures
• Zero-commission trading on stocks, ETFs, and mutual funds
• Build portfolios from thousands of individual securities or use robo-advisor portfolios
• Extensive educational resources available

Which Investments Work Best for Young Investors?

With your account open, selecting the right investments is crucial. Young investors benefit from growth-oriented investments due to their long time horizons—you don’t need to play it safe with conservative options yet.

Individual Stocks

Buying individual stocks means owning a fractional share of a company’s ownership. When the company performs well, your stock value grows. This option offers educational value: you can research companies, follow their news, and discuss stocks with peers. The tradeoff is concentrated risk—poor company performance directly impacts your investment.

Mutual Funds

A mutual fund pools money to purchase dozens, hundreds, or even thousands of different investments simultaneously. This diversification protects you: if one holding declines, its impact is diluted across your entire portfolio. The downside is annual management fees that reduce your returns. Compare funds carefully to ensure you’re getting value for the cost.

Exchange-Traded Funds (ETFs) and Index Funds

ETFs function similarly to mutual funds but trade throughout the day like stocks, rather than settling once daily. Most ETFs are passively managed index funds that track predetermined collections of stocks or bonds. Index funds typically cost less than actively managed funds and often outperform human managers. For young investors wanting broad diversification, index funds or ETFs represent an excellent starting point.

Why Starting Young Creates Long-Term Advantages

The younger you begin investing, the more powerful your results become over time.

The Compounding Effect

Compounding means your earnings generate their own earnings, creating exponential growth. Here’s a concrete example: Invest $1,000 at 4.0% annual percentage yield. After year one, you’ve earned $40, bringing your balance to $1,040. In year two, you earn 4.0% on $1,040 (not just the original $1,000), yielding $41.60 and bringing your total to $1,081.60. This accelerating growth continues for decades.

Starting at 13 instead of 23 or 33 means compound returns working in your favor for 10 or 20 additional years. That time differential transforms modest contributions into substantial wealth.

Developing Lifelong Money Management Habits

Consistent investing teaches discipline and goal-setting. Whether you’re saving for a car, college, home, or retirement, investing forces you to regularly set aside money. Once you reach adulthood, this investing habit integrates seamlessly into your budget alongside rent, utilities, and other essentials.

Weathering Market Cycles

Stock markets don’t move in straight lines—they cycle through rises and falls. Your personal financial situation also fluctuates. Starting young gives you more time to wait out market downturns and adjust your savings plans as needed. This buffer allows you to make smarter decisions rather than panic-selling during downturns.

Investment Accounts Parents Can Open on a Child’s Behalf

Beyond the accounts discussed above, parents have additional options for investing on behalf of younger children, even before the child expresses interest in stocks.

529 Education Savings Plans

Age requirement: None specified

A 529 plan is a tax-advantaged account for saving toward education expenses. “Qualified expenses” include tuition, fees, room and board, books, technology needs, student loan repayment, K-12 tuition, and trade school costs. Contributions use after-tax dollars, but the funds grow tax-free until withdrawal for educational purposes.

The adult owns and controls the account. If your child decides not to attend college, you can transfer the funds to another qualifying family member or use them for your own education without penalty. Non-qualified withdrawals trigger taxes plus a 10% penalty, though military academy attendance, disability, death, or receipt of a tax-free scholarship waive the penalty.

Education Savings Accounts (Coverdell ESAs)

Age requirement: None specified

Also called Coverdell accounts or education IRAs, ESAs are custodial trusts for elementary, secondary, and college expenses. Contributions use after-tax dollars, with account funds growing tax-free. Withdrawals must be used for qualified educational expenses before the beneficiary turns age 30.

Income limits apply: single filers with modified adjusted gross income under $95,000 can contribute fully, with a phase-out between $95,000-$110,000. Married filing jointly filers can contribute fully below $190,000, with a phase-out between $190,000-$220,000. The maximum annual contribution is $2,000 per student per year until age 18.

Parent’s Standard Brokerage Account

Age requirement: Not applicable

Parents can simply invest using their own brokerage account without creating a separate vehicle for the child. This offers complete flexibility—no contribution limits, no usage restrictions, and no minimum balances required at most online brokers. The tradeoff: you forfeit tax advantages that 529 plans and ESAs provide.

Starting Your Investment Journey: Action Steps

Ready to get started? Here’s what you need to do:

Step 1: Determine Your Age and Account Eligibility

If you’re under 18, identify which account types you qualify for based on your age and whether you have earned income. Coordinate with a parent or guardian to explore your options.

Step 2: Select Your Account Type

Choose between joint accounts (if you want to participate in decisions), custodial accounts (if an adult will make decisions), or custodial IRAs (if you have work income). Each offers different benefits and restrictions.

Step 3: Open Your Account

Visit the provider’s website, complete the application, and fund your account. Many platforms now support mobile-first onboarding for teens.

Step 4: Choose Your Investments

Select growth-oriented investments appropriate for your timeline. Start with diversified ETFs or index funds if you’re unsure about individual stock selection.

Step 5: Commit to Consistency

Regular contributions—even small amounts—build wealth faster than irregular large deposits. Set up automatic transfers if possible.

Key Takeaway: The Minimum Age to Invest

To summarize: the minimum age to independently manage stocks and investments is 18 years old. However, minors can begin investing younger through joint accounts with an adult, custodial accounts managed by a guardian, or custodial IRAs if they have earned income.

The earlier you start, regardless of which account structure you use, the more time your money has to grow through compounding and the stronger your financial foundation becomes. Don’t wait until you’re an adult to discover investing—many investment platforms now make it easier than ever for teenagers to begin their wealth-building journey while still in school.