How Taxes Work on Investments (Teen's Guide)

· Core Concepts

Nobody likes taxes, but ignoring them is a mistake. When you make money from investing, Uncle Sam wants his cut. The good news? As a teen, your tax situation is usually pretty simple. Here's what you need to know.

Capital Gains Tax

When you sell an investment for more than you paid, the profit is called a capital gain, and it's taxable.

  • Short-term capital gains (held less than 1 year): Taxed at your regular income tax rate (10-37%).
  • Long-term capital gains (held more than 1 year): Taxed at lower rates (0%, 15%, or 20%).

As a teen with little income, you might pay 0% on long-term gains if your total income is under ~$44,000. That's a huge advantage!

The lesson: hold your investments for at least 1 year before selling. The tax savings alone make it worth it.

Dividend Taxes

Dividends are taxed too:

  • Qualified dividends (from most US stocks held 60+ days): Taxed at the lower long-term capital gains rate.
  • Non-qualified dividends: Taxed at your regular income rate.

Again, as a teen with low income, you'll likely pay very little or nothing on dividends. But it's good to know this exists for when you're earning more.

The Kiddie Tax

Here's a curveball: the kiddie tax rule says that if a child's unearned income (investment income) exceeds ~$2,500, it gets taxed at the parent's tax rate.

For most teen investors starting with small amounts, this won't apply. But if your custodial account starts generating serious investment income, be aware of it.

The fix? A Roth IRA (if you have earned income from a job) grows completely tax-free. Ask your parents about setting one up once you have a job.

Tax Tips for Teen Investors

  1. Hold for 1+ years: Long-term capital gains rates are way lower.
  2. Use tax-advantaged accounts: Roth IRAs (if you have job income) grow tax-free forever.
  3. Don't sell unless you need to: Unrealized gains (stocks you haven't sold) aren't taxed. Buy and hold.
  4. Reinvest dividends: Dividends in custodial accounts are taxable even if reinvested.
  5. Keep records: Track what you bought and when. Your future self will thank you at tax time.

Don't let taxes scare you away from investing. The returns far outweigh the taxes, especially when you start young and hold long-term.