A high schooler flipping burgers, lifeguarding, or babysitting this summer is sitting on something most adults would trade a lot to get back: five decades of tax-free compounding runway. If your teen has a real paycheck, they qualify to open a Roth IRA, and the numbers that follow are the reason financial planners keep pushing this idea on parents who will listen.
The mechanics are straightforward. The IRS only requires earned income, meaning W-2 wages, self-employment, or gig work, not allowance, gifts, or investment income. There is no minimum age to open or contribute to a Roth IRA. Because your child is a minor, the account is typically a custodial Roth IRA opened and managed by a parent or guardian until the child reaches the age of majority, generally 18 or 21 depending on the state. Charles Schwab (NYSE:SCHW | SCHW Price Prediction), Fidelity, Vanguard, and Empower all offer them.
The 2026 Rules In One Paragraph
For 2026, the Roth IRA contribution limit is $7,500 per year for anyone under 50, or 100% of the person’s earned income for the year, whichever is lower. In plain English: if your 16-year-old earned $3,000 at a coffee shop last summer, the max she can put in is $3,000. If she earned $9,000, the max is $7,500. And here is the piece most parents miss: anyone can fund the contribution. A parent or grandparent can hand over the cash while the teen keeps her paycheck, as long as the deposit does not exceed her actual earned income for the year.
Why Time Is Doing The Heavy Lifting
A dollar contributed at age 15 has roughly 50 years to grow before a normal retirement age. That is the entire trick. Using a 7% average annual return assumption, which is a standard moderate estimate and not a guarantee, every contribution grows to its value at 65 by multiplying it by 1.07 raised to the number of years remaining. Actual market returns vary year to year and can be negative in any single year.
The aggressive case shows the upper bound. If a parent funds the full limit for five years, ages 15 through 19, that is $7,500 per year for five years, or $37,500 total out of pocket. Each contribution then sits untouched. At a 7% average annual return, that $37,500 grows to approximately $969,000 by age 65, essentially a million-dollar retirement account funded entirely during high school and the freshman year of college, with zero further contributions after age 19.
Most families cannot or will not max the limit. A teen earning steady part-time money contributes $3,000 per year for four years, ages 15 through 18, for $12,000 total. At a 7% average annual return compounding untouched to age 65, that grows to approximately $320,000. Even a single, one-time deposit compounds meaningfully: a single $7,500 contribution at age 15, never touched again, grows to roughly $221,000 by age 65 at 7%.
For scale, the S&P 500 tracker SPDR S&P 500 ETF Trust (NYSEARCA:SPY) has returned roughly 241% over the past ten years, while the 10-year Treasury currently yields about 4.7%. That gap is precisely why a long time horizon in equities is so powerful, and why parking teen money in a savings account is the expensive default.
The Assumption You Need To Take Seriously
None of the figures above are promises. They rest on that 7% average annual return assumption, and any given decade can undershoot or overshoot. Present these as illustrations of how the account type and time horizon interact, not as guarantees. The math is directional.
Why The Roth Wrapper Matters More Than The Ticker
A regular brokerage account would tax dividends and capital gains along the way and again at sale. A Roth IRA does neither. Contributions grow tax-free, and qualified withdrawals in retirement, after age 59 1/2 and with the account open five or more years, are entirely tax-free, both the original contributions and all the investment growth. At a projected $969,000, that difference is not a footnote.
How To Actually Do This
Opening the account takes about 15 minutes online at Fidelity, Schwab, or Vanguard. You will need the teen’s Social Security number, proof of earned income (a pay stub, W-2, or a simple log for self-employed babysitting or lawn work), and your own identification as custodian. Fund it before the tax-filing deadline for the year the income was earned. The most common mistake is waiting until the child is 25 to have this conversation, which quietly erases the most valuable decade of compounding. Consider talking with a financial advisor or tax professional about how this fits your family’s broader plan.
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